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hf_public_repos/text-generation-inference/launcher | hf_public_repos/text-generation-inference/launcher/src/env_runtime.rs | use std::fmt;
use std::process::Command;
pub(crate) struct Env {
cargo_target: &'static str,
cargo_version: &'static str,
git_sha: &'static str,
docker_label: &'static str,
nvidia_env: String,
}
impl Env {
pub fn new() -> Self {
let nvidia_env = nvidia_smi();
Self {
nvidia_env: nvidia_env.unwrap_or("N/A".to_string()),
cargo_target: env!("VERGEN_CARGO_TARGET_TRIPLE"),
cargo_version: env!("VERGEN_RUSTC_SEMVER"),
git_sha: option_env!("VERGEN_GIT_SHA").unwrap_or("N/A"),
docker_label: option_env!("DOCKER_LABEL").unwrap_or("N/A"),
}
}
}
impl fmt::Display for Env {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
writeln!(f, "Runtime environment:")?;
writeln!(f, "Target: {}", self.cargo_target)?;
writeln!(f, "Cargo version: {}", self.cargo_version)?;
writeln!(f, "Commit sha: {}", self.git_sha)?;
writeln!(f, "Docker label: {}", self.docker_label)?;
write!(f, "nvidia-smi:\n{}", self.nvidia_env)?;
Ok(())
}
}
fn nvidia_smi() -> Option<String> {
let output = Command::new("nvidia-smi").output().ok()?;
let nvidia_smi = String::from_utf8(output.stdout).ok()?;
let output = nvidia_smi.replace('\n', "\n ");
Some(output.trim().to_string())
}
| 0 |
hf_public_repos/text-generation-inference/launcher | hf_public_repos/text-generation-inference/launcher/src/main.rs | use clap::{Parser, ValueEnum};
use nix::sys::signal::{self, Signal};
use nix::unistd::Pid;
use serde::Deserialize;
use std::env;
use std::ffi::OsString;
use std::io::{BufRead, BufReader, Lines, Read};
use std::os::unix::process::{CommandExt, ExitStatusExt};
use std::path::Path;
use std::process::{Child, Command, ExitStatus, Stdio};
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::mpsc::TryRecvError;
use std::sync::{mpsc, Arc};
use std::thread;
use std::thread::sleep;
use std::time::{Duration, Instant};
use std::{fs, io};
use tracing_subscriber::EnvFilter;
mod env_runtime;
#[derive(Clone, Copy, Debug, ValueEnum)]
enum Quantization {
Bitsandbytes,
BitsandbytesNF4,
BitsandbytesFP4,
Gptq,
}
impl std::fmt::Display for Quantization {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
// To keep in track with `server`.
match self {
Quantization::Bitsandbytes => {
write!(f, "bitsandbytes")
}
Quantization::BitsandbytesNF4 => {
write!(f, "bitsandbytes-nf4")
}
Quantization::BitsandbytesFP4 => {
write!(f, "bitsandbytes-fp4")
}
Quantization::Gptq => {
write!(f, "gptq")
}
}
}
}
#[derive(Clone, Copy, Debug, ValueEnum)]
enum Dtype {
Float16,
#[clap(name = "bfloat16")]
BFloat16,
}
impl std::fmt::Display for Dtype {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
// To keep in track with `server`.
match self {
Dtype::Float16 => {
write!(f, "float16")
}
Dtype::BFloat16 => {
write!(f, "bfloat16")
}
}
}
}
#[derive(Clone, Copy, Debug, ValueEnum)]
enum RopeScaling {
Linear,
Dynamic,
}
impl std::fmt::Display for RopeScaling {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
// To keep in track with `server`.
match self {
RopeScaling::Linear => {
write!(f, "linear")
}
RopeScaling::Dynamic => {
write!(f, "dynamic")
}
}
}
}
/// App Configuration
#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
struct Args {
/// The name of the model to load.
/// Can be a MODEL_ID as listed on <https://hf.co/models> like
/// `gpt2` or `OpenAssistant/oasst-sft-1-pythia-12b`.
/// Or it can be a local directory containing the necessary files
/// as saved by `save_pretrained(...)` methods of transformers
#[clap(default_value = "bigscience/bloom-560m", long, env)]
model_id: String,
/// The actual revision of the model if you're referring to a model
/// on the hub. You can use a specific commit id or a branch like `refs/pr/2`.
#[clap(long, env)]
revision: Option<String>,
/// The number of tokenizer workers used for payload validation and truncation inside the
/// router.
#[clap(default_value = "2", long, env)]
validation_workers: usize,
/// Whether to shard the model across multiple GPUs
/// By default text-generation-inference will use all available GPUs to run
/// the model. Setting it to `false` deactivates `num_shard`.
#[clap(long, env)]
sharded: Option<bool>,
/// The number of shards to use if you don't want to use all GPUs on a given machine.
/// You can use `CUDA_VISIBLE_DEVICES=0,1 text-generation-launcher... --num_shard 2`
/// and `CUDA_VISIBLE_DEVICES=2,3 text-generation-launcher... --num_shard 2` to
/// launch 2 copies with 2 shard each on a given machine with 4 GPUs for instance.
#[clap(long, env)]
num_shard: Option<usize>,
/// Whether you want the model to be quantized. This will use `bitsandbytes` for
/// quantization on the fly, or `gptq`. 4bit quantization is available through
/// `bitsandbytes` by providing the `bitsandbytes-fp4` or `bitsandbytes-nf4` options.
#[clap(long, env, value_enum)]
quantize: Option<Quantization>,
/// The dtype to be forced upon the model. This option cannot be used with `--quantize`.
#[clap(long, env, value_enum)]
dtype: Option<Dtype>,
/// Whether you want to execute hub modelling code. Explicitly passing a `revision` is
/// encouraged when loading a model with custom code to ensure no malicious code has been
/// contributed in a newer revision.
#[clap(long, env, value_enum)]
trust_remote_code: bool,
/// The maximum amount of concurrent requests for this particular deployment.
/// Having a low limit will refuse clients requests instead of having them
/// wait for too long and is usually good to handle backpressure correctly.
#[clap(default_value = "128", long, env)]
max_concurrent_requests: usize,
/// This is the maximum allowed value for clients to set `best_of`.
/// Best of makes `n` generations at the same time, and return the best
/// in terms of overall log probability over the entire generated sequence
#[clap(default_value = "2", long, env)]
max_best_of: usize,
/// This is the maximum allowed value for clients to set `stop_sequences`.
/// Stop sequences are used to allow the model to stop on more than just
/// the EOS token, and enable more complex "prompting" where users can preprompt
/// the model in a specific way and define their "own" stop token aligned with
/// their prompt.
#[clap(default_value = "4", long, env)]
max_stop_sequences: usize,
/// This is the maximum allowed input length (expressed in number of tokens)
/// for users. The larger this value, the longer prompt users can send which
/// can impact the overall memory required to handle the load.
/// Please note that some models have a finite range of sequence they can handle.
#[clap(default_value = "1024", long, env)]
max_input_length: usize,
/// This is the most important value to set as it defines the "memory budget"
/// of running clients requests.
/// Clients will send input sequences and ask to generate `max_new_tokens`
/// on top. with a value of `1512` users can send either a prompt of
/// `1000` and ask for `512` new tokens, or send a prompt of `1` and ask for
/// `1511` max_new_tokens.
/// The larger this value, the larger amount each request will be in your RAM
/// and the less effective batching can be.
#[clap(default_value = "2048", long, env)]
max_total_tokens: usize,
/// This represents the ratio of waiting queries vs running queries where
/// you want to start considering pausing the running queries to include the waiting
/// ones into the same batch.
/// `waiting_served_ratio=1.2` Means when 12 queries are waiting and there's
/// only 10 queries left in the current batch we check if we can fit those 12
/// waiting queries into the batching strategy, and if yes, then batching happens
/// delaying the 10 running queries by a `prefill` run.
///
/// This setting is only applied if there is room in the batch
/// as defined by `max_batch_total_tokens`.
#[clap(default_value = "1.2", long, env)]
waiting_served_ratio: f32,
/// Limits the number of tokens for the prefill operation.
/// Since this operation take the most memory and is compute bound, it is interesting
/// to limit the number of requests that can be sent.
#[clap(default_value = "4096", long, env)]
max_batch_prefill_tokens: u32,
/// **IMPORTANT** This is one critical control to allow maximum usage
/// of the available hardware.
///
/// This represents the total amount of potential tokens within a batch.
/// When using padding (not recommended) this would be equivalent of
/// `batch_size` * `max_total_tokens`.
///
/// However in the non-padded (flash attention) version this can be much finer.
///
/// For `max_batch_total_tokens=1000`, you could fit `10` queries of `total_tokens=100`
/// or a single query of `1000` tokens.
///
/// Overall this number should be the largest possible amount that fits the
/// remaining memory (after the model is loaded). Since the actual memory overhead
/// depends on other parameters like if you're using quantization, flash attention
/// or the model implementation, text-generation-inference cannot infer this number
/// automatically.
#[clap(long, env)]
max_batch_total_tokens: Option<u32>,
/// This setting defines how many tokens can be passed before forcing the waiting
/// queries to be put on the batch (if the size of the batch allows for it).
/// New queries require 1 `prefill` forward, which is different from `decode`
/// and therefore you need to pause the running batch in order to run `prefill`
/// to create the correct values for the waiting queries to be able to join the batch.
///
/// With a value too small, queries will always "steal" the compute to run `prefill`
/// and running queries will be delayed by a lot.
///
/// With a value too big, waiting queries could wait for a very long time
/// before being allowed a slot in the running batch. If your server is busy
/// that means that requests that could run in ~2s on an empty server could
/// end up running in ~20s because the query had to wait for 18s.
///
/// This number is expressed in number of tokens to make it a bit more
/// "model" agnostic, but what should really matter is the overall latency
/// for end users.
#[clap(default_value = "20", long, env)]
max_waiting_tokens: usize,
/// The IP address to listen on
#[clap(default_value = "0.0.0.0", long, env)]
hostname: String,
/// The port to listen on.
#[clap(default_value = "3000", long, short, env)]
port: u16,
/// The name of the socket for gRPC communication between the webserver
/// and the shards.
#[clap(default_value = "/tmp/text-generation-server", long, env)]
shard_uds_path: String,
/// The address the master shard will listen on. (setting used by torch distributed)
#[clap(default_value = "localhost", long, env)]
master_addr: String,
/// The address the master port will listen on. (setting used by torch distributed)
#[clap(default_value = "29500", long, env)]
master_port: usize,
/// The location of the huggingface hub cache.
/// Used to override the location if you want to provide a mounted disk for instance
#[clap(long, env)]
huggingface_hub_cache: Option<String>,
/// The location of the huggingface hub cache.
/// Used to override the location if you want to provide a mounted disk for instance
#[clap(long, env)]
weights_cache_override: Option<String>,
/// For some models (like bloom), text-generation-inference implemented custom
/// cuda kernels to speed up inference. Those kernels were only tested on A100.
/// Use this flag to disable them if you're running on different hardware and
/// encounter issues.
#[clap(long, env)]
disable_custom_kernels: bool,
/// Limit the CUDA available memory.
/// The allowed value equals the total visible memory multiplied by cuda-memory-fraction.
#[clap(default_value = "1.0", long, env)]
cuda_memory_fraction: f32,
/// Rope scaling will only be used for RoPE models
/// and allow rescaling the position rotary to accomodate for
/// larger prompts.
///
/// Goes together with `rope_factor`.
///
/// `--rope-factor 2.0` gives linear scaling with a factor of 2.0
/// `--rope-scaling dynamic` gives dynamic scaling with a factor of 1.0
/// `--rope-scaling linear` gives linear scaling with a factor of 1.0 (Nothing will be changed
/// basically)
///
/// `--rope-scaling linear --rope-factor` fully describes the scaling you want
#[clap(long, env)]
rope_scaling: Option<RopeScaling>,
/// Rope scaling will only be used for RoPE models
/// See `rope_scaling`
#[clap(long, env)]
rope_factor: Option<f32>,
/// Outputs the logs in JSON format (useful for telemetry)
#[clap(long, env)]
json_output: bool,
#[clap(long, env)]
otlp_endpoint: Option<String>,
#[clap(long, env)]
cors_allow_origin: Vec<String>,
#[clap(long, env)]
watermark_gamma: Option<f32>,
#[clap(long, env)]
watermark_delta: Option<f32>,
/// Enable ngrok tunneling
#[clap(long, env)]
ngrok: bool,
/// ngrok authentication token
#[clap(long, env)]
ngrok_authtoken: Option<String>,
/// ngrok edge
#[clap(long, env)]
ngrok_edge: Option<String>,
/// Display a lot of information about your runtime environment
#[clap(long, short, action)]
env: bool,
}
#[derive(Debug)]
enum ShardStatus {
Ready,
Failed(usize),
}
#[allow(clippy::too_many_arguments)]
fn shard_manager(
model_id: String,
revision: Option<String>,
quantize: Option<Quantization>,
dtype: Option<Dtype>,
trust_remote_code: bool,
uds_path: String,
rank: usize,
world_size: usize,
master_addr: String,
master_port: usize,
huggingface_hub_cache: Option<String>,
weights_cache_override: Option<String>,
disable_custom_kernels: bool,
watermark_gamma: Option<f32>,
watermark_delta: Option<f32>,
cuda_memory_fraction: f32,
rope_scaling: Option<RopeScaling>,
rope_factor: Option<f32>,
otlp_endpoint: Option<String>,
status_sender: mpsc::Sender<ShardStatus>,
shutdown: Arc<AtomicBool>,
_shutdown_sender: mpsc::Sender<()>,
) {
// Enter shard-manager tracing span
let _span = tracing::span!(tracing::Level::INFO, "shard-manager", rank = rank).entered();
// Get UDS path
let uds_string = format!("{uds_path}-{rank}");
let uds = Path::new(&uds_string);
// Clean previous runs
if uds.exists() {
fs::remove_file(uds).unwrap();
}
// Process args
let mut shard_args = vec![
"serve".to_string(),
model_id,
"--uds-path".to_string(),
uds_path,
"--logger-level".to_string(),
"INFO".to_string(),
"--json-output".to_string(),
];
// Activate trust remote code
if trust_remote_code {
shard_args.push("--trust-remote-code".to_string());
}
// Activate tensor parallelism
if world_size > 1 {
shard_args.push("--sharded".to_string());
}
if let Some(quantize) = quantize {
shard_args.push("--quantize".to_string());
shard_args.push(quantize.to_string())
}
if let Some(dtype) = dtype {
shard_args.push("--dtype".to_string());
shard_args.push(dtype.to_string())
}
// Model optional revision
if let Some(revision) = revision {
shard_args.push("--revision".to_string());
shard_args.push(revision)
}
let rope = match (rope_scaling, rope_factor) {
(None, None) => None,
(Some(scaling), None) => Some((scaling, 1.0)),
(Some(scaling), Some(factor)) => Some((scaling, factor)),
(None, Some(factor)) => Some((RopeScaling::Linear, factor)),
};
// OpenTelemetry
if let Some(otlp_endpoint) = otlp_endpoint {
shard_args.push("--otlp-endpoint".to_string());
shard_args.push(otlp_endpoint);
}
// Copy current process env
let mut envs: Vec<(OsString, OsString)> = env::vars_os().collect();
// Torch Distributed Env vars
envs.push(("RANK".into(), rank.to_string().into()));
envs.push(("WORLD_SIZE".into(), world_size.to_string().into()));
envs.push(("MASTER_ADDR".into(), master_addr.into()));
envs.push(("MASTER_PORT".into(), master_port.to_string().into()));
envs.push(("NCCL_ASYNC_ERROR_HANDLING".into(), "1".into()));
// CUDA memory fraction
envs.push((
"CUDA_MEMORY_FRACTION".into(),
cuda_memory_fraction.to_string().into(),
));
// Safetensors load fast
envs.push(("SAFETENSORS_FAST_GPU".into(), "1".into()));
// Enable hf transfer for insane download speeds
let enable_hf_transfer = env::var("HF_HUB_ENABLE_HF_TRANSFER").unwrap_or("1".to_string());
envs.push((
"HF_HUB_ENABLE_HF_TRANSFER".into(),
enable_hf_transfer.into(),
));
// Parse Inference API token
if let Ok(api_token) = env::var("HF_API_TOKEN") {
envs.push(("HUGGING_FACE_HUB_TOKEN".into(), api_token.into()))
};
// Detect rope scaling
// Sending as env instead of CLI args to not bloat everything
// those only can be used by RoPE models, so passing information around
// for all models will complexify code unnecessarily
if let Some((scaling, factor)) = rope {
envs.push(("ROPE_SCALING".into(), scaling.to_string().into()));
envs.push(("ROPE_FACTOR".into(), factor.to_string().into()));
}
// If huggingface_hub_cache is some, pass it to the shard
// Useful when running inside a docker container
if let Some(huggingface_hub_cache) = huggingface_hub_cache {
envs.push(("HUGGINGFACE_HUB_CACHE".into(), huggingface_hub_cache.into()));
};
// If weights_cache_override is some, pass it to the shard
// Useful when running inside a HuggingFace Inference Endpoint
if let Some(weights_cache_override) = weights_cache_override {
envs.push((
"WEIGHTS_CACHE_OVERRIDE".into(),
weights_cache_override.into(),
));
};
// If disable_custom_kernels is true, pass it to the shard as an env var
if disable_custom_kernels {
envs.push(("DISABLE_CUSTOM_KERNELS".into(), "True".into()))
}
// Watermark Gamma
if let Some(watermark_gamma) = watermark_gamma {
envs.push(("WATERMARK_GAMMA".into(), watermark_gamma.to_string().into()))
}
// Watermark Delta
if let Some(watermark_delta) = watermark_delta {
envs.push(("WATERMARK_DELTA".into(), watermark_delta.to_string().into()))
}
// Start process
tracing::info!("Starting shard");
let mut p = match Command::new("text-generation-server")
.args(shard_args)
.envs(envs)
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.process_group(0)
.spawn()
{
Ok(p) => p,
Err(err) => {
if err.kind() == io::ErrorKind::NotFound {
tracing::error!("text-generation-server not found in PATH");
tracing::error!("Please install it with `make install-server`")
}
{
tracing::error!("{}", err);
}
status_sender.send(ShardStatus::Failed(rank)).unwrap();
return;
}
};
// Redirect STDOUT to the console
let shard_stdout_reader = BufReader::new(p.stdout.take().unwrap());
let shard_stderr_reader = BufReader::new(p.stderr.take().unwrap());
//stdout tracing thread
thread::spawn(move || {
log_lines(shard_stdout_reader.lines());
});
let mut ready = false;
let start_time = Instant::now();
let mut wait_time = Instant::now();
loop {
// Process exited
if let Some(exit_status) = p.try_wait().unwrap() {
// We read stderr in another thread as it seems that lines() can block in some cases
let (err_sender, err_receiver) = mpsc::channel();
thread::spawn(move || {
for line in shard_stderr_reader.lines().flatten() {
err_sender.send(line).unwrap_or(());
}
});
let mut err = String::new();
while let Ok(line) = err_receiver.recv_timeout(Duration::from_millis(10)) {
err = err + "\n" + &line;
}
tracing::error!("Shard complete standard error output:\n{err}");
if let Some(signal) = exit_status.signal() {
tracing::error!("Shard process was signaled to shutdown with signal {signal}");
}
status_sender.send(ShardStatus::Failed(rank)).unwrap();
return;
}
// We received a shutdown signal
if shutdown.load(Ordering::SeqCst) {
p.kill().unwrap();
let _ = p.wait();
tracing::info!("Shard terminated");
return;
}
// Shard is ready
if uds.exists() && !ready {
tracing::info!("Shard ready in {:?}", start_time.elapsed());
status_sender.send(ShardStatus::Ready).unwrap();
ready = true;
} else if !ready && wait_time.elapsed() > Duration::from_secs(10) {
tracing::info!("Waiting for shard to be ready...");
wait_time = Instant::now();
}
sleep(Duration::from_millis(100));
}
}
fn shutdown_shards(shutdown: Arc<AtomicBool>, shutdown_receiver: &mpsc::Receiver<()>) {
tracing::info!("Shutting down shards");
// Update shutdown value to true
// This will be picked up by the shard manager
shutdown.store(true, Ordering::SeqCst);
// Wait for shards to shutdown
// This will block till all shutdown_sender are dropped
let _ = shutdown_receiver.recv();
}
fn num_cuda_devices() -> Option<usize> {
let devices = match env::var("CUDA_VISIBLE_DEVICES") {
Ok(devices) => devices,
Err(_) => env::var("NVIDIA_VISIBLE_DEVICES").ok()?,
};
let n_devices = devices.split(',').count();
Some(n_devices)
}
#[derive(Deserialize)]
#[serde(rename_all = "UPPERCASE")]
enum PythonLogLevelEnum {
Trace,
Debug,
Info,
Success,
Warning,
Error,
Critical,
}
#[derive(Deserialize)]
struct PythonLogLevel {
name: PythonLogLevelEnum,
}
#[derive(Deserialize)]
struct PythonLogRecord {
level: PythonLogLevel,
}
#[derive(Deserialize)]
struct PythonLogMessage {
text: String,
record: PythonLogRecord,
}
impl PythonLogMessage {
fn trace(&self) {
match self.record.level.name {
PythonLogLevelEnum::Trace => tracing::trace!("{}", self.text),
PythonLogLevelEnum::Debug => tracing::debug!("{}", self.text),
PythonLogLevelEnum::Info => tracing::info!("{}", self.text),
PythonLogLevelEnum::Success => tracing::info!("{}", self.text),
PythonLogLevelEnum::Warning => tracing::warn!("{}", self.text),
PythonLogLevelEnum::Error => tracing::error!("{}", self.text),
PythonLogLevelEnum::Critical => tracing::error!("{}", self.text),
}
}
}
impl TryFrom<&String> for PythonLogMessage {
type Error = serde_json::Error;
fn try_from(value: &String) -> Result<Self, Self::Error> {
serde_json::from_str::<Self>(value)
}
}
fn log_lines<S: Sized + BufRead>(lines: Lines<S>) {
for line in lines.flatten() {
match PythonLogMessage::try_from(&line) {
Ok(log) => log.trace(),
Err(_) => tracing::debug!("{line}"),
}
}
}
fn find_num_shards(
sharded: Option<bool>,
num_shard: Option<usize>,
) -> Result<usize, LauncherError> {
// get the number of shards given `sharded` and `num_shard`
let num_shard = match (sharded, num_shard) {
(Some(true), None) => {
// try to default to the number of available GPUs
tracing::info!("Parsing num_shard from CUDA_VISIBLE_DEVICES/NVIDIA_VISIBLE_DEVICES");
let n_devices = num_cuda_devices()
.expect("--num-shard and CUDA_VISIBLE_DEVICES/NVIDIA_VISIBLE_DEVICES are not set");
if n_devices <= 1 {
return Err(LauncherError::NotEnoughCUDADevices(format!(
"`sharded` is true but only found {n_devices} CUDA devices"
)));
}
n_devices
}
(Some(true), Some(num_shard)) => {
// we can't have only one shard while sharded
if num_shard <= 1 {
return Err(LauncherError::ArgumentValidation(
"`sharded` is true but `num_shard` <= 1".to_string(),
));
}
num_shard
}
(Some(false), Some(num_shard)) => num_shard,
(Some(false), None) => 1,
(None, None) => num_cuda_devices().unwrap_or(1),
(None, Some(num_shard)) => num_shard,
};
if num_shard < 1 {
return Err(LauncherError::ArgumentValidation(
"`num_shard` cannot be < 1".to_string(),
));
}
Ok(num_shard)
}
#[derive(Debug)]
enum LauncherError {
ArgumentValidation(String),
NotEnoughCUDADevices(String),
DownloadError,
ShardCannotStart,
ShardDisconnected,
ShardFailed,
WebserverFailed,
WebserverCannotStart,
}
fn download_convert_model(args: &Args, running: Arc<AtomicBool>) -> Result<(), LauncherError> {
// Enter download tracing span
let _span = tracing::span!(tracing::Level::INFO, "download").entered();
let mut download_args = vec![
"download-weights".to_string(),
args.model_id.to_string(),
"--extension".to_string(),
".safetensors".to_string(),
"--logger-level".to_string(),
"INFO".to_string(),
"--json-output".to_string(),
];
// Model optional revision
if let Some(revision) = &args.revision {
download_args.push("--revision".to_string());
download_args.push(revision.to_string())
}
// Trust remote code for automatic peft fusion
if args.trust_remote_code {
download_args.push("--trust-remote-code".to_string());
}
// Copy current process env
let mut envs: Vec<(OsString, OsString)> = env::vars_os().collect();
// If huggingface_hub_cache is set, pass it to the download process
// Useful when running inside a docker container
if let Some(ref huggingface_hub_cache) = args.huggingface_hub_cache {
envs.push(("HUGGINGFACE_HUB_CACHE".into(), huggingface_hub_cache.into()));
};
// Enable hf transfer for insane download speeds
let enable_hf_transfer = env::var("HF_HUB_ENABLE_HF_TRANSFER").unwrap_or("1".to_string());
envs.push((
"HF_HUB_ENABLE_HF_TRANSFER".into(),
enable_hf_transfer.into(),
));
// Parse Inference API token
if let Ok(api_token) = env::var("HF_API_TOKEN") {
envs.push(("HUGGING_FACE_HUB_TOKEN".into(), api_token.into()))
};
// If args.weights_cache_override is some, pass it to the download process
// Useful when running inside a HuggingFace Inference Endpoint
if let Some(weights_cache_override) = &args.weights_cache_override {
envs.push((
"WEIGHTS_CACHE_OVERRIDE".into(),
weights_cache_override.into(),
));
};
// Start process
tracing::info!("Starting download process.");
let mut download_process = match Command::new("text-generation-server")
.args(download_args)
.envs(envs)
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.process_group(0)
.spawn()
{
Ok(p) => p,
Err(err) => {
if err.kind() == io::ErrorKind::NotFound {
tracing::error!("text-generation-server not found in PATH");
tracing::error!("Please install it with `make install-server`")
} else {
tracing::error!("{}", err);
}
return Err(LauncherError::DownloadError);
}
};
// Redirect STDOUT to the console
let download_stdout = download_process.stdout.take().unwrap();
let stdout = BufReader::new(download_stdout);
thread::spawn(move || {
log_lines(stdout.lines());
});
loop {
if let Some(status) = download_process.try_wait().unwrap() {
if status.success() {
tracing::info!("Successfully downloaded weights.");
break;
}
let mut err = String::new();
download_process
.stderr
.take()
.unwrap()
.read_to_string(&mut err)
.unwrap();
if let Some(signal) = status.signal() {
tracing::error!(
"Download process was signaled to shutdown with signal {signal}: {err}"
);
} else {
tracing::error!("Download encountered an error: {err}");
}
return Err(LauncherError::DownloadError);
}
if !running.load(Ordering::SeqCst) {
terminate("download", download_process, Duration::from_secs(10)).unwrap();
return Ok(());
}
sleep(Duration::from_millis(100));
}
Ok(())
}
#[allow(clippy::too_many_arguments)]
fn spawn_shards(
num_shard: usize,
args: &Args,
shutdown: Arc<AtomicBool>,
shutdown_receiver: &mpsc::Receiver<()>,
shutdown_sender: mpsc::Sender<()>,
status_receiver: &mpsc::Receiver<ShardStatus>,
status_sender: mpsc::Sender<ShardStatus>,
running: Arc<AtomicBool>,
) -> Result<(), LauncherError> {
// Start shard processes
for rank in 0..num_shard {
let model_id = args.model_id.clone();
let revision = args.revision.clone();
let uds_path = args.shard_uds_path.clone();
let master_addr = args.master_addr.clone();
let huggingface_hub_cache = args.huggingface_hub_cache.clone();
let weights_cache_override = args.weights_cache_override.clone();
let status_sender = status_sender.clone();
let shutdown = shutdown.clone();
let shutdown_sender = shutdown_sender.clone();
let otlp_endpoint = args.otlp_endpoint.clone();
let quantize = args.quantize;
let dtype = args.dtype;
let trust_remote_code = args.trust_remote_code;
let master_port = args.master_port;
let disable_custom_kernels = args.disable_custom_kernels;
let watermark_gamma = args.watermark_gamma;
let watermark_delta = args.watermark_delta;
let cuda_memory_fraction = args.cuda_memory_fraction;
let rope_scaling = args.rope_scaling;
let rope_factor = args.rope_factor;
thread::spawn(move || {
shard_manager(
model_id,
revision,
quantize,
dtype,
trust_remote_code,
uds_path,
rank,
num_shard,
master_addr,
master_port,
huggingface_hub_cache,
weights_cache_override,
disable_custom_kernels,
watermark_gamma,
watermark_delta,
cuda_memory_fraction,
rope_scaling,
rope_factor,
otlp_endpoint,
status_sender,
shutdown,
shutdown_sender,
)
});
}
drop(shutdown_sender);
// Wait for shard to start
let mut shard_ready = 0;
while running.load(Ordering::SeqCst) {
match status_receiver.try_recv() {
Ok(ShardStatus::Ready) => {
shard_ready += 1;
if shard_ready == num_shard {
break;
}
}
Err(TryRecvError::Empty) => {
sleep(Duration::from_millis(100));
}
Ok(ShardStatus::Failed(rank)) => {
tracing::error!("Shard {rank} failed to start");
shutdown_shards(shutdown, shutdown_receiver);
return Err(LauncherError::ShardCannotStart);
}
Err(TryRecvError::Disconnected) => {
tracing::error!("Shard status channel disconnected");
shutdown_shards(shutdown, shutdown_receiver);
return Err(LauncherError::ShardDisconnected);
}
}
}
Ok(())
}
fn spawn_webserver(
args: Args,
shutdown: Arc<AtomicBool>,
shutdown_receiver: &mpsc::Receiver<()>,
) -> Result<Child, LauncherError> {
// All shard started
// Start webserver
tracing::info!("Starting Webserver");
let mut router_args = vec![
"--max-concurrent-requests".to_string(),
args.max_concurrent_requests.to_string(),
"--max-best-of".to_string(),
args.max_best_of.to_string(),
"--max-stop-sequences".to_string(),
args.max_stop_sequences.to_string(),
"--max-input-length".to_string(),
args.max_input_length.to_string(),
"--max-total-tokens".to_string(),
args.max_total_tokens.to_string(),
"--max-batch-prefill-tokens".to_string(),
args.max_batch_prefill_tokens.to_string(),
"--waiting-served-ratio".to_string(),
args.waiting_served_ratio.to_string(),
"--max-waiting-tokens".to_string(),
args.max_waiting_tokens.to_string(),
"--validation-workers".to_string(),
args.validation_workers.to_string(),
"--hostname".to_string(),
args.hostname.to_string(),
"--port".to_string(),
args.port.to_string(),
"--master-shard-uds-path".to_string(),
format!("{}-0", args.shard_uds_path),
"--tokenizer-name".to_string(),
args.model_id,
];
// Model optional max batch total tokens
if let Some(max_batch_total_tokens) = args.max_batch_total_tokens {
router_args.push("--max-batch-total-tokens".to_string());
router_args.push(max_batch_total_tokens.to_string());
}
// Model optional revision
if let Some(ref revision) = args.revision {
router_args.push("--revision".to_string());
router_args.push(revision.to_string())
}
if args.json_output {
router_args.push("--json-output".to_string());
}
// OpenTelemetry
if let Some(otlp_endpoint) = args.otlp_endpoint {
router_args.push("--otlp-endpoint".to_string());
router_args.push(otlp_endpoint);
}
// CORS origins
for origin in args.cors_allow_origin.into_iter() {
router_args.push("--cors-allow-origin".to_string());
router_args.push(origin);
}
// Ngrok
if args.ngrok {
router_args.push("--ngrok".to_string());
router_args.push("--ngrok-authtoken".to_string());
router_args.push(args.ngrok_authtoken.unwrap());
router_args.push("--ngrok-edge".to_string());
router_args.push(args.ngrok_edge.unwrap());
}
// Copy current process env
let mut envs: Vec<(OsString, OsString)> = env::vars_os().collect();
// Parse Inference API token
if let Ok(api_token) = env::var("HF_API_TOKEN") {
envs.push(("HUGGING_FACE_HUB_TOKEN".into(), api_token.into()))
};
let mut webserver = match Command::new("text-generation-router")
.args(router_args)
.envs(envs)
.stdout(Stdio::piped())
.stderr(Stdio::piped())
.process_group(0)
.spawn()
{
Ok(p) => p,
Err(err) => {
tracing::error!("Failed to start webserver: {}", err);
if err.kind() == io::ErrorKind::NotFound {
tracing::error!("text-generation-router not found in PATH");
tracing::error!("Please install it with `make install-router`")
} else {
tracing::error!("{}", err);
}
shutdown_shards(shutdown, shutdown_receiver);
return Err(LauncherError::WebserverCannotStart);
}
};
// Redirect STDOUT and STDERR to the console
let webserver_stdout = webserver.stdout.take().unwrap();
let webserver_stderr = webserver.stderr.take().unwrap();
thread::spawn(move || {
let stdout = BufReader::new(webserver_stdout);
let stderr = BufReader::new(webserver_stderr);
for line in stdout.lines() {
println!("{}", line.unwrap());
}
for line in stderr.lines() {
println!("{}", line.unwrap());
}
});
Ok(webserver)
}
fn terminate(process_name: &str, mut process: Child, timeout: Duration) -> io::Result<ExitStatus> {
tracing::info!("Terminating {process_name}");
let terminate_time = Instant::now();
signal::kill(Pid::from_raw(process.id() as i32), Signal::SIGTERM).unwrap();
tracing::info!("Waiting for {process_name} to gracefully shutdown");
while terminate_time.elapsed() < timeout {
if let Some(status) = process.try_wait()? {
tracing::info!("{process_name} terminated");
return Ok(status);
}
sleep(Duration::from_millis(100));
}
tracing::info!("Killing {process_name}");
process.kill()?;
let exit_status = process.wait()?;
tracing::info!("{process_name} killed");
Ok(exit_status)
}
fn main() -> Result<(), LauncherError> {
// Pattern match configuration
let args: Args = Args::parse();
// Filter events with LOG_LEVEL
let env_filter =
EnvFilter::try_from_env("LOG_LEVEL").unwrap_or_else(|_| EnvFilter::new("info"));
if args.json_output {
tracing_subscriber::fmt()
.with_env_filter(env_filter)
.json()
.init();
} else {
tracing_subscriber::fmt()
.with_env_filter(env_filter)
.compact()
.init();
}
if args.env {
let env_runtime = env_runtime::Env::new();
tracing::info!("{}", env_runtime);
}
tracing::info!("{:?}", args);
// Validate args
if args.max_input_length >= args.max_total_tokens {
return Err(LauncherError::ArgumentValidation(
"`max_input_length` must be < `max_total_tokens`".to_string(),
));
}
if args.max_input_length as u32 > args.max_batch_prefill_tokens {
return Err(LauncherError::ArgumentValidation(format!(
"`max_batch_prefill_tokens` must be >= `max_input_length`. Given: {} and {}",
args.max_batch_prefill_tokens, args.max_input_length
)));
}
if args.validation_workers == 0 {
return Err(LauncherError::ArgumentValidation(
"`validation_workers` must be > 0".to_string(),
));
}
if args.trust_remote_code {
tracing::warn!(
"`trust_remote_code` is set. Trusting that model `{}` do not contain malicious code.",
args.model_id
);
}
let num_shard = find_num_shards(args.sharded, args.num_shard)?;
if num_shard > 1 {
tracing::info!("Sharding model on {num_shard} processes");
}
if let Some(ref max_batch_total_tokens) = args.max_batch_total_tokens {
if args.max_batch_prefill_tokens > *max_batch_total_tokens {
return Err(LauncherError::ArgumentValidation(format!(
"`max_batch_prefill_tokens` must be <= `max_batch_total_tokens`. Given: {} and {}",
args.max_batch_prefill_tokens, max_batch_total_tokens
)));
}
if args.max_total_tokens as u32 > *max_batch_total_tokens {
return Err(LauncherError::ArgumentValidation(format!(
"`max_total_tokens` must be <= `max_batch_total_tokens`. Given: {} and {}",
args.max_total_tokens, max_batch_total_tokens
)));
}
}
if args.ngrok {
if args.ngrok_authtoken.is_none() {
return Err(LauncherError::ArgumentValidation(
"`ngrok-authtoken` must be set when using ngrok tunneling".to_string(),
));
}
if args.ngrok_edge.is_none() {
return Err(LauncherError::ArgumentValidation(
"`ngrok-edge` must be set when using ngrok tunneling".to_string(),
));
}
}
// Signal handler
let running = Arc::new(AtomicBool::new(true));
let r = running.clone();
ctrlc::set_handler(move || {
r.store(false, Ordering::SeqCst);
})
.expect("Error setting Ctrl-C handler");
// Download and convert model weights
download_convert_model(&args, running.clone())?;
if !running.load(Ordering::SeqCst) {
// Launcher was asked to stop
return Ok(());
}
// Shared shutdown bool
let shutdown = Arc::new(AtomicBool::new(false));
// Shared shutdown channel
// When shutting down, the main thread will wait for all senders to be dropped
let (shutdown_sender, shutdown_receiver) = mpsc::channel();
// Shared channel to track shard status
let (status_sender, status_receiver) = mpsc::channel();
spawn_shards(
num_shard,
&args,
shutdown.clone(),
&shutdown_receiver,
shutdown_sender,
&status_receiver,
status_sender,
running.clone(),
)?;
// We might have received a termination signal
if !running.load(Ordering::SeqCst) {
shutdown_shards(shutdown, &shutdown_receiver);
return Ok(());
}
let mut webserver =
spawn_webserver(args, shutdown.clone(), &shutdown_receiver).map_err(|err| {
shutdown_shards(shutdown.clone(), &shutdown_receiver);
err
})?;
// Default exit code
let mut exit_code = Ok(());
while running.load(Ordering::SeqCst) {
if let Ok(ShardStatus::Failed(rank)) = status_receiver.try_recv() {
tracing::error!("Shard {rank} crashed");
exit_code = Err(LauncherError::ShardFailed);
break;
};
match webserver.try_wait().unwrap() {
Some(_) => {
tracing::error!("Webserver Crashed");
shutdown_shards(shutdown, &shutdown_receiver);
return Err(LauncherError::WebserverFailed);
}
None => {
sleep(Duration::from_millis(100));
}
};
}
// Graceful termination
terminate("webserver", webserver, Duration::from_secs(90)).unwrap();
shutdown_shards(shutdown, &shutdown_receiver);
exit_code
}
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/load_tests/starcoder_load.js | import {check} from 'k6';
import http from 'k6/http';
import {Trend} from 'k6/metrics';
const host = __ENV.HOST || '127.0.0.1:3000';
const totalTime = new Trend('total_time', true);
const validationTime = new Trend('validation_time', true);
const queueTime = new Trend('queue_time', true);
const inferenceTime = new Trend('inference_time', true);
const timePerToken = new Trend('time_per_token', true);
const example = {
payload: JSON.stringify({
inputs: '# This is a fibonacci function written in the Python programming language.' +
'def fibonacci',
parameters: {
details: true,
max_new_tokens: 60,
temperature: 0.2,
top_p: 0.95,
seed: 0,
},
}),
generated_tokens: 60
};
export const options = {
thresholds: {
http_req_failed: ['rate==0'],
time_per_token: ['p(95)<90'],
queue_time: ['p(95)<1500'],
},
scenarios: {
load_test: {
executor: 'constant-arrival-rate',
duration: '60s',
preAllocatedVUs: 100,
rate: 10,
timeUnit: '1s',
},
},
};
export default function () {
const headers = {'Content-Type': 'application/json'};
const res = http.post(`http://${host}/generate`, example.payload, {
headers,
});
check(res, {
'Post status is 200': (r) => res.status === 200,
'Post response generated tokens': (r) => res.status === 200 && res.json().details.generated_tokens === example.generated_tokens,
});
if (res.status === 200) {
totalTime.add(res.headers["X-Total-Time"]);
validationTime.add(res.headers["X-Validation-Time"]);
queueTime.add(res.headers["X-Queue-Time"]);
inferenceTime.add(res.headers["X-Inference-Time"]);
timePerToken.add(res.headers["X-Time-Per-Token"]);
}
} | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/proto/generate.proto | syntax = "proto3";
package generate.v1;
service TextGenerationService {
/// Model Info
rpc Info (InfoRequest) returns (InfoResponse) {}
/// Service discovery
rpc ServiceDiscovery (ServiceDiscoveryRequest) returns (ServiceDiscoveryResponse) {}
/// Empties batch cache
rpc ClearCache (ClearCacheRequest) returns (ClearCacheResponse);
/// Remove requests from a cached batch
rpc FilterBatch (FilterBatchRequest) returns (FilterBatchResponse);
/// Warmup the model and compute max cache size
rpc Warmup (WarmupRequest) returns (WarmupResponse);
/// Prefill batch and decode first token
rpc Prefill (PrefillRequest) returns (PrefillResponse);
/// Decode token for a list of prefilled batches
rpc Decode (DecodeRequest) returns (DecodeResponse);
/// Health check
rpc Health (HealthRequest) returns (HealthResponse);
}
message HealthRequest {}
message HealthResponse {}
/// Empty request
message InfoRequest {}
message InfoResponse {
bool requires_padding = 1;
string dtype = 2;
string device_type = 3;
}
/// Empty request
message ServiceDiscoveryRequest {}
message ServiceDiscoveryResponse {
/// Other shards urls
repeated string urls = 1;
}
message ClearCacheRequest {
/// Optional batch id
optional uint64 id = 1;
}
/// Empty response
message ClearCacheResponse {}
message NextTokenChooserParameters {
/// exponential scaling output probability distribution
float temperature = 1;
/// restricting to the k highest probability elements
uint32 top_k = 2;
/// restricting to top tokens summing to prob_cut_off <= prob_cut_off
float top_p = 3;
/// restricting to top tokens summing to prob_cut_off <= prob_cut_off
float typical_p = 4;
/// apply sampling on the logits
bool do_sample = 5;
/// random seed for sampling
uint64 seed = 6;
/// repetition penalty
float repetition_penalty = 7;
/// token watermarking using "A Watermark for Large Language Models"
bool watermark = 8;
}
message StoppingCriteriaParameters {
/// Maximum number of generated tokens
uint32 max_new_tokens = 1;
/// Optional stopping sequences
repeated string stop_sequences = 2;
/// Ignore end of sequence token
/// used for benchmarking
bool ignore_eos_token = 3;
}
message Request {
/// Request ID
uint64 id = 1;
/// The generation context
string inputs = 2;
/// Context truncation
uint32 truncate = 3;
/// Next Token Chooser Parameters
NextTokenChooserParameters parameters = 4;
/// Stopping Criteria Parameters
StoppingCriteriaParameters stopping_parameters = 5;
/// Return prefill logprobs
bool prefill_logprobs = 6;
}
message Batch {
/// Batch ID
uint64 id = 1;
/// Individual requests
repeated Request requests = 2;
/// Batch size (==len(requests))
uint32 size = 3;
/// Maximum number of tokens this batch will grow to
uint32 max_tokens = 4;
}
message CachedBatch {
/// Batch ID
uint64 id = 1;
/// Individual requests ids
repeated uint64 request_ids = 2;
/// Batch size (==len(requests))
uint32 size = 3;
/// Maximum number of tokens this batch will grow to
uint32 max_tokens = 4;
}
enum FinishReason {
FINISH_REASON_LENGTH = 0;
FINISH_REASON_EOS_TOKEN = 1;
FINISH_REASON_STOP_SEQUENCE = 2;
}
message GeneratedText {
/// Output
string text = 1;
/// Number of generated tokens
uint32 generated_tokens = 2;
/// Finish reason
FinishReason finish_reason = 3;
/// Seed
optional uint64 seed = 4;
}
message PrefillTokens {
/// Prefill Token IDs
repeated uint32 ids = 1;
/// Prefill Logprobs
repeated float logprobs = 2;
/// Prefill tokens
repeated string texts = 3;
}
message Generation {
/// Request ID
uint64 request_id = 1;
/// Prefill tokens (optional)
PrefillTokens prefill_tokens = 2;
/// Token ID
uint32 token_id = 3;
/// Logprob
float token_logprob = 4;
/// Text
string token_text = 5;
/// Is it a special token
bool token_is_special = 6;
/// Complete generated text
optional GeneratedText generated_text = 7;
}
message FilterBatchRequest {
/// Batch ID
uint64 batch_id = 1;
/// Requests to keep
repeated uint64 request_ids = 2;
}
message FilterBatchResponse {
/// Filtered Batch (cached)
CachedBatch batch = 1;
}
message PrefillRequest {
/// Batch
Batch batch = 1;
}
message PrefillResponse {
/// Generation
repeated Generation generations = 1;
/// Next batch (cached)
optional CachedBatch batch = 2;
}
message DecodeRequest {
/// Cached batches
repeated CachedBatch batches = 1;
}
message DecodeResponse {
/// Decodes
repeated Generation generations = 1;
/// Next batch (cached)
optional CachedBatch batch = 2;
}
message WarmupRequest {
/// Batch to warmup on
Batch batch = 1;
}
/// Empty response
message WarmupResponse {
/// Maximum number of tokens supported by the model
optional uint32 max_supported_total_tokens = 1;
}
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/router/Cargo.toml | [package]
name = "text-generation-router"
description = "Text Generation Webserver"
build = "build.rs"
version.workspace = true
edition.workspace = true
authors.workspace = true
homepage.workspace = true
[lib]
path = "src/lib.rs"
[[bin]]
name = "text-generation-router"
path = "src/main.rs"
[dependencies]
async-stream = "0.3.3"
axum = { version = "0.6.4", features = ["json"] }
axum-tracing-opentelemetry = "0.10.0"
text-generation-client = { path = "client" }
clap = { version = "4.1.4", features = ["derive", "env"] }
flume = "0.10.14"
futures = "0.3.26"
metrics = "0.21.0"
metrics-exporter-prometheus = { version = "0.12.1", features = [] }
nohash-hasher = "0.2.0"
opentelemetry = { version = "0.19.0", features = ["rt-tokio"] }
opentelemetry-otlp = "0.12.0"
rand = "0.8.5"
reqwest = { version = "0.11.14", features = [] }
serde = "1.0.152"
serde_json = "1.0.93"
thiserror = "1.0.38"
tokenizers = "0.13.3"
tokio = { version = "1.25.0", features = ["rt", "rt-multi-thread", "parking_lot", "signal", "sync"] }
tower-http = { version = "0.4.0", features = ["cors"] }
tracing = "0.1.37"
tracing-opentelemetry = "0.19.0"
tracing-subscriber = { version = "0.3.16", features = ["json", "env-filter"] }
utoipa = { version = "3.0.1", features = ["axum_extras"] }
utoipa-swagger-ui = { version = "3.0.2", features = ["axum"] }
ngrok = { version = "0.12.3", features = ["axum"], optional = true }
[build-dependencies]
vergen = { version = "8.0.0", features = ["build", "git", "gitcl"] }
[features]
default = ["ngrok"]
ngrok = ["dep:ngrok"] | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/router/README.md | # Router
Also named `webserver` throughout the docs.
This router is handling most of the logic to handle the "batches" tell
when to pass new `prefill` requests and pausing `decode` requests, which ones etc...
It uses gRPC to communicate with the shards which can therefore be kept
much simpler and focus on having the most efficient forward passes as possible.
## Continuous batching
One important feature of `text-generation-inference` is enabled
by this `router`.
Continuous batching is the act of regularly running queries in the same
`forward` step of the LLM (a "batch") and also removing them when they are
finished.
In order for continuous batching to be useful, you need to have more compute available
with respect to the memory requirements of your model. This is essentially true for
LLMs and the larger the model, the truer it gets (since you have to pool multiple
GPUs to load the model, you effectively have a lot of compute power at your hands).
Static batching is the act of doing several queries at the same time, but usually
this is controlled by the client, and therefore the amount of batching is decided
beforehand.
For text-generation, and LLMs which are memory bound we can try to be much more
efficient with the available compute, by having client sending us single queries,
and let the router mix&match queries into or out of batches to make the use the
compute the most efficiently. This is possible because for LLMs the total compute
for running the model is much bigger than doing mix&match of the batches themselves.
### Simple continuous batching
text-generation works by feeding a prompt to a model, and iteratively calling
`forward` on the model to produce new text, 1 token at a time.
The first idea is simple, when a query arrives, we start working on it directly.
When new queries arrive, we simply wait for the current `forward` to be finished
then batch the current running prompt with the new query, and call `forward`.
Whenever either query is finished: either the model produce EOS (end of sentence) token
or the query reached the allowed limit. We simply drop it from the batch, remove
all the allocated memory and we can continue with the rest until nothing is left.
This simple idea generalizes very well and we could potentially stack many requests
in the same batch.
One thing to note, is that queries can be potentially run with different parameters
meaning different way to choose the next token (sampling, not sampling, temperature, top_k etc..). This is not problematic for the proposed approach we just need to do the sampling
independantly on each member of the batch.
### Prefill, decode and past key values
In order to make LLMs and text-generation efficient, there's actually a very powerful
trick that can be used, which is the "caching" of some attention matrices. [More on that
in the first part of this blog](https://huggingface.co/blog/accelerated-inference#getting-to-the-first-10x-speedup)
What this means, is that the first "pass" of a prompt is different from the subsequent
"forward" passes. Since for the first one we have to compute the entire attention matrix, whereas in the follow-ups only require to compute the new token attention.
The first pass is called `prefill` throughout this codebase where as the follow-ups are called `decode`.
Since `prefill` is much more expensive than `decode` we don't want to do it all the time,
but a currently running query is probably doing `decode`. If we want to do the continuous
batching as explained previously we need to run `prefill` at some point in order to create
the attention matrix required to be able to join the `decode` group.
`text-generation-inference` uses a bunch of different strategies and parameters in
order to enable you to find the sweet spot between exploiting the hardware and perceived latency.
With no continuous batching at all, latency is going to be super good, but throughput (meaning
the total number of requests allowed in a given timeframe) is going to be super bad (since it's essentially 1).
With static batching, you can probably reach the maximum throughput (by using the maximum total batch size applicable to your hardware), but the latency is super bad since in order to have maximum throughput you need to wait for requests to come in before processing.
With continuous batching you can find a sweet spot. In general latency is the most critical
parameter users care about. But a 2x latency slowdown for 10x more users on the same
hardware is an acceptable tradeoff.
## Token streaming
This is a very important aspect of client UX. As mentionned above, latency is the
most critical perceived quality of an LLM API.
With token streaming, the server can start answering after the first `prefill` pass
directly, without waiting for all the generation to be done. For extremely long queries
this means clients can start to see something happening orders of magnitude before
the work is done. Seeing something in progress allows them to cut short if it's not
what's wanted but also it "feels" better.
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/router/build.rs | use std::error::Error;
use vergen::EmitBuilder;
fn main() -> Result<(), Box<dyn Error>> {
// Try to get the git sha from the local git repository
if EmitBuilder::builder()
.fail_on_error()
.git_sha(false)
.emit()
.is_err()
{
// Unable to get the git sha
if let Ok(sha) = std::env::var("GIT_SHA") {
// Set it from an env var
println!("cargo:rustc-env=VERGEN_GIT_SHA={sha}");
}
}
// Set docker label if present
if let Ok(label) = std::env::var("DOCKER_LABEL") {
// Set it from an env var
println!("cargo:rustc-env=DOCKER_LABEL={label}");
}
Ok(())
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/client/Cargo.toml | [package]
name = "text-generation-client"
version.workspace = true
edition.workspace = true
authors.workspace = true
homepage.workspace = true
[dependencies]
futures = "^0.3"
grpc-metadata = { path = "../grpc-metadata" }
prost = "^0.11"
thiserror = "^1.0"
tokio = { version = "^1.25", features = ["sync"] }
tonic = "^0.9"
tower = "^0.4"
tracing = "^0.1"
[build-dependencies]
tonic-build = "0.9.2"
prost-build = "0.11.6"
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/client/build.rs | use std::fs;
fn main() -> Result<(), Box<dyn std::error::Error>> {
println!("cargo:rerun-if-changed=../../proto/generate.proto");
fs::create_dir("src/pb").unwrap_or(());
let mut config = prost_build::Config::new();
config.protoc_arg("--experimental_allow_proto3_optional");
tonic_build::configure()
.build_client(true)
.build_server(false)
.out_dir("src/pb")
.include_file("mod.rs")
.compile_with_config(config, &["../../proto/generate.proto"], &["../../proto"])
.unwrap_or_else(|e| panic!("protobuf compilation failed: {e}"));
Ok(())
}
| 0 |
hf_public_repos/text-generation-inference/router/client | hf_public_repos/text-generation-inference/router/client/src/client.rs | /// Single shard Client
use crate::pb::generate::v1::text_generation_service_client::TextGenerationServiceClient;
use crate::pb::generate::v1::*;
use crate::Result;
use grpc_metadata::InjectTelemetryContext;
use std::cmp::min;
use tonic::transport::{Channel, Uri};
use tracing::instrument;
/// Text Generation Inference gRPC client
#[derive(Debug, Clone)]
pub struct Client {
stub: TextGenerationServiceClient<Channel>,
}
impl Client {
/// Returns a client connected to the given url
pub async fn connect(uri: Uri) -> Result<Self> {
let channel = Channel::builder(uri).connect().await?;
Ok(Self {
stub: TextGenerationServiceClient::new(channel),
})
}
/// Returns a client connected to the given unix socket
pub async fn connect_uds(path: String) -> Result<Self> {
let channel = Channel::from_shared("http://[::]:50051".to_string())
.unwrap()
.connect_with_connector(tower::service_fn(move |_: Uri| {
tokio::net::UnixStream::connect(path.clone())
}))
.await?;
Ok(Self {
stub: TextGenerationServiceClient::new(channel),
})
}
/// Returns a list of uris or unix sockets of all shards
#[instrument(skip(self))]
pub async fn service_discovery(&mut self) -> Result<Vec<String>> {
let request = tonic::Request::new(ServiceDiscoveryRequest {}).inject_context();
let response = self.stub.service_discovery(request).await?;
let urls = response
.into_inner()
.urls
.into_iter()
// Remove unix socket prefix
.map(|url| match url.strip_prefix("unix://") {
None => url,
Some(stripped_url) => stripped_url.to_string(),
})
.collect();
Ok(urls)
}
/// Get model info
#[instrument(skip(self))]
pub async fn info(&mut self) -> Result<InfoResponse> {
let request = tonic::Request::new(InfoRequest {}).inject_context();
let response = self.stub.info(request).await?.into_inner();
Ok(response)
}
/// Get model health
#[instrument(skip(self))]
pub async fn health(&mut self) -> Result<HealthResponse> {
let request = tonic::Request::new(HealthRequest {}).inject_context();
let response = self.stub.health(request).await?.into_inner();
Ok(response)
}
/// Clear the past generations cache
#[instrument(skip(self))]
pub async fn clear_cache(&mut self, batch_id: Option<u64>) -> Result<()> {
let request = tonic::Request::new(ClearCacheRequest { id: batch_id }).inject_context();
self.stub.clear_cache(request).await?;
Ok(())
}
/// Filter a cached batch
#[instrument(skip(self))]
pub async fn filter_batch(
&mut self,
batch_id: u64,
request_ids: Vec<u64>,
) -> Result<Option<CachedBatch>> {
let request = tonic::Request::new(FilterBatchRequest {
batch_id,
request_ids,
})
.inject_context();
let filtered_batch = self.stub.filter_batch(request).await?.into_inner();
Ok(filtered_batch.batch)
}
/// Warmup on a max size batch
///
/// Returns the maximum amount of tokens supported by the hardware
#[instrument(skip_all)]
pub async fn warmup(
&mut self,
max_input_length: u32,
max_prefill_tokens: u32,
) -> Result<Option<u32>> {
let mut n_tokens = 0;
let mut requests = Vec::new();
// Create requests
while n_tokens < max_prefill_tokens {
requests.push(Request {
id: 0,
// We truncate the input on the server side to be sure that it has the correct size
inputs: "_test ".to_string().repeat(max_input_length as usize),
truncate: min(max_input_length, max_prefill_tokens - n_tokens),
// Set sampling parameters to also take these ops into account in the max memory
parameters: Some(NextTokenChooserParameters {
temperature: 0.9,
top_k: 10,
top_p: 0.9,
typical_p: 0.9,
do_sample: false,
seed: 0,
repetition_penalty: 1.2,
watermark: true,
}),
stopping_parameters: Some(StoppingCriteriaParameters {
max_new_tokens: 2,
stop_sequences: vec![],
ignore_eos_token: false,
}),
prefill_logprobs: true,
});
n_tokens += max_input_length;
}
let batch = Batch {
id: 0,
size: requests.len() as u32,
requests,
max_tokens: 0,
};
let request = tonic::Request::new(WarmupRequest { batch: Some(batch) }).inject_context();
let response = self.stub.warmup(request).await?.into_inner();
Ok(response.max_supported_total_tokens)
}
/// Generate one token for each request in the given batch
///
/// Returns Generation for each request in batch
/// and the next cached batch
#[instrument(skip_all, fields(id = &batch.id, size = &batch.size))]
pub async fn prefill(
&mut self,
batch: Batch,
) -> Result<(Vec<Generation>, Option<CachedBatch>)> {
let request = tonic::Request::new(PrefillRequest { batch: Some(batch) }).inject_context();
let response = self.stub.prefill(request).await?.into_inner();
Ok((response.generations, response.batch))
}
/// Generate one token for each request in the given cached batches
///
/// Returns Generation for each request in batches
/// and the next cached batch
#[instrument(skip_all, fields(size = batches.iter().map(|batch|{batch.size}).sum::<u32>()))]
pub async fn decode(
&mut self,
batches: Vec<CachedBatch>,
) -> Result<(Vec<Generation>, Option<CachedBatch>)> {
let request = tonic::Request::new(DecodeRequest { batches }).inject_context();
let response = self.stub.decode(request).await?.into_inner();
Ok((response.generations, response.batch))
}
}
| 0 |
hf_public_repos/text-generation-inference/router/client | hf_public_repos/text-generation-inference/router/client/src/lib.rs | //! Text Generation gRPC client library
mod client;
#[allow(clippy::derive_partial_eq_without_eq)]
mod pb;
mod sharded_client;
pub use client::Client;
pub use pb::generate::v1::HealthResponse;
pub use pb::generate::v1::InfoResponse as ShardInfo;
pub use pb::generate::v1::{
Batch, CachedBatch, FinishReason, GeneratedText, Generation, NextTokenChooserParameters,
PrefillTokens, Request, StoppingCriteriaParameters,
};
pub use sharded_client::ShardedClient;
use thiserror::Error;
use tonic::transport;
use tonic::Status;
#[derive(Error, Debug, Clone)]
pub enum ClientError {
#[error("Could not connect to Text Generation server: {0}")]
Connection(String),
#[error("Server error: {0}")]
Generation(String),
#[error("Sharded results are empty")]
EmptyResults,
}
impl From<Status> for ClientError {
fn from(err: Status) -> Self {
let err = Self::Generation(err.message().to_string());
tracing::error!("{err}");
err
}
}
impl From<transport::Error> for ClientError {
fn from(err: transport::Error) -> Self {
let err = Self::Connection(err.to_string());
tracing::error!("{err}");
err
}
}
pub type Result<T> = std::result::Result<T, ClientError>;
| 0 |
hf_public_repos/text-generation-inference/router/client | hf_public_repos/text-generation-inference/router/client/src/sharded_client.rs | /// Multi shard Client
use crate::{Batch, CachedBatch, Client, Generation, HealthResponse, ShardInfo};
use crate::{ClientError, Result};
use futures::future::join_all;
use tonic::transport::Uri;
use tracing::instrument;
#[derive(Debug, Clone)]
/// Text Generation Inference gRPC multi client
pub struct ShardedClient {
clients: Vec<Client>,
}
impl ShardedClient {
fn new(clients: Vec<Client>) -> Self {
Self { clients }
}
/// Create a new ShardedClient from a master client. The master client will communicate with
/// the other shards and returns all uris/unix sockets with the `service_discovery` gRPC method.
async fn from_master_client(mut master_client: Client) -> Result<Self> {
// Get all uris/unix sockets from the master client
let uris = master_client.service_discovery().await?;
let futures = uris.into_iter().map(Client::connect_uds);
let clients: Result<Vec<Client>> = join_all(futures).await.into_iter().collect();
Ok(Self::new(clients?))
}
/// Returns a client connected to the given uri
pub async fn connect(uri: Uri) -> Result<Self> {
let master_client = Client::connect(uri).await?;
Self::from_master_client(master_client).await
}
/// Returns a client connected to the given unix socket
pub async fn connect_uds(path: String) -> Result<Self> {
let master_client = Client::connect_uds(path).await?;
Self::from_master_client(master_client).await
}
/// Get the model info
#[instrument(skip(self))]
pub async fn info(&mut self) -> Result<ShardInfo> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| client.info())
.collect();
join_all(futures).await.pop().unwrap()
}
/// GRPC health check
#[instrument(skip(self))]
pub async fn health(&mut self) -> Result<HealthResponse> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| client.health())
.collect();
join_all(futures).await.pop().unwrap()
}
/// Clear the past generations cache
#[instrument(skip(self))]
pub async fn clear_cache(&mut self, batch_id: Option<u64>) -> Result<()> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| client.clear_cache(batch_id))
.collect();
join_all(futures).await.into_iter().collect()
}
/// Filter a cached batch
#[instrument(skip(self))]
pub async fn filter_batch(
&mut self,
batch_id: u64,
request_ids: Vec<u64>,
) -> Result<Option<CachedBatch>> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| Box::pin(client.filter_batch(batch_id, request_ids.clone())))
.collect();
// all shards return the same message
join_all(futures).await.pop().unwrap()
}
/// Warmup on a max size batch
///
/// Returns the maximum amount of tokens supported by the hardware
#[instrument(skip(self))]
pub async fn warmup(
&mut self,
max_input_length: u32,
max_prefill_tokens: u32,
) -> Result<Option<u32>> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| Box::pin(client.warmup(max_input_length, max_prefill_tokens)))
.collect();
// Take the minimum value
let results = join_all(futures)
.await
.into_iter()
.collect::<Result<Vec<Option<u32>>>>()?;
Ok(results.into_iter().flatten().min())
}
/// Generate one token for each request in the given batch
///
/// Returns Generation for each request in batch
/// and the next cached batch
#[instrument(skip_all, fields(id = &batch.id, size = &batch.size))]
pub async fn prefill(
&mut self,
batch: Batch,
) -> Result<(Vec<Generation>, Option<CachedBatch>)> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| Box::pin(client.prefill(batch.clone())))
.collect();
let results: Result<Vec<(Vec<Generation>, Option<CachedBatch>)>> =
join_all(futures).await.into_iter().collect();
merge_generations(results?)
}
/// Generate one token for each request in the given cached batches
///
/// Returns Generation for each request in batches
/// and the next cached batch
#[instrument(skip_all, fields(size = batches.iter().map(|batch|{batch.size}).sum::<u32>()))]
pub async fn decode(
&mut self,
batches: Vec<CachedBatch>,
) -> Result<(Vec<Generation>, Option<CachedBatch>)> {
let futures: Vec<_> = self
.clients
.iter_mut()
.map(|client| Box::pin(client.decode(batches.clone())))
.collect();
let results: Result<Vec<(Vec<Generation>, Option<CachedBatch>)>> =
join_all(futures).await.into_iter().collect();
merge_generations(results?)
}
}
/// Merge generations from the different model shards
fn merge_generations(
mut results: Vec<(Vec<Generation>, Option<CachedBatch>)>,
) -> Result<(Vec<Generation>, Option<CachedBatch>)> {
let (mut generations, next_batch) = results.pop().ok_or(ClientError::EmptyResults)?;
for (mut shard_generations, _) in results.into_iter() {
generations.append(&mut shard_generations);
}
Ok((generations, next_batch))
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/grpc-metadata/Cargo.toml | [package]
name = "grpc-metadata"
version = "0.1.0"
edition = "2021"
[dependencies]
opentelemetry = "^0.19"
tonic = "^0.9"
tracing = "^0.1"
tracing-opentelemetry = "^0.19"
| 0 |
hf_public_repos/text-generation-inference/router/grpc-metadata | hf_public_repos/text-generation-inference/router/grpc-metadata/src/lib.rs | //! A crate to extract and inject a OpenTelemetry context from and to a gRPC request.
//! Inspired by: https://github.com/open-telemetry/opentelemetry-rust gRPC examples
use opentelemetry::global;
use opentelemetry::propagation::{Extractor, Injector};
use tracing_opentelemetry::OpenTelemetrySpanExt;
/// Extract context metadata from a gRPC request's metadata
struct MetadataExtractor<'a>(pub &'a tonic::metadata::MetadataMap);
impl<'a> Extractor for MetadataExtractor<'a> {
/// Get a value for a key from the MetadataMap. If the value can't be converted to &str, returns None
fn get(&self, key: &str) -> Option<&str> {
self.0.get(key).and_then(|metadata| metadata.to_str().ok())
}
/// Collect all the keys from the MetadataMap.
fn keys(&self) -> Vec<&str> {
self.0
.keys()
.map(|key| match key {
tonic::metadata::KeyRef::Ascii(v) => v.as_str(),
tonic::metadata::KeyRef::Binary(v) => v.as_str(),
})
.collect::<Vec<_>>()
}
}
/// Inject context in the metadata of a gRPC request.
struct MetadataInjector<'a>(pub &'a mut tonic::metadata::MetadataMap);
impl<'a> Injector for MetadataInjector<'a> {
/// Set a key and value in the MetadataMap. Does nothing if the key or value are not valid inputs
fn set(&mut self, key: &str, value: String) {
if let Ok(key) = tonic::metadata::MetadataKey::from_bytes(key.as_bytes()) {
if let Ok(val) = value.parse() {
self.0.insert(key, val);
}
}
}
}
/// Get a context from the global context and inject the span into a gRPC request's metadata.
fn inject(metadata: &mut tonic::metadata::MetadataMap) {
global::get_text_map_propagator(|propagator| {
propagator.inject_context(
&tracing::Span::current().context(),
&mut MetadataInjector(metadata),
)
})
}
pub trait InjectTelemetryContext {
fn inject_context(self) -> Self;
}
impl<T> InjectTelemetryContext for tonic::Request<T> {
fn inject_context(mut self) -> Self {
inject(self.metadata_mut());
self
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/health.rs | use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use text_generation_client::{
Batch, NextTokenChooserParameters, Request, ShardedClient, StoppingCriteriaParameters,
};
// Note: Request ids and batch ids cannot collide.
const LIVENESS_ID: u64 = u64::MAX;
const BATCH_ID: u64 = u64::MAX;
#[derive(Clone, Debug)]
pub(crate) struct Health {
client: ShardedClient,
generation_health: Arc<AtomicBool>,
}
impl Health {
pub(crate) fn new(client: ShardedClient, generation_health: Arc<AtomicBool>) -> Self {
Self {
client,
generation_health,
}
}
pub(crate) async fn check(&mut self) -> bool {
if self.generation_health.load(Ordering::SeqCst) {
// Generation is healthy, we only check that the shards are answering gRPC calls
self.client.health().await.is_ok()
} else {
// Generation is unhealthy or have not sent any generation request yet
// Dummy batch of 1 token and 1 generated token
let liveness_request = Request {
id: LIVENESS_ID,
inputs: "liveness".to_string(),
truncate: 10,
prefill_logprobs: false,
parameters: Some(NextTokenChooserParameters {
temperature: 1.0,
top_k: 0,
top_p: 1.0,
typical_p: 1.0,
do_sample: false,
seed: 0,
repetition_penalty: 1.0,
watermark: false,
}),
stopping_parameters: Some(StoppingCriteriaParameters {
max_new_tokens: 1,
stop_sequences: vec![],
ignore_eos_token: false,
}),
};
let batch = Batch {
id: BATCH_ID,
requests: vec![liveness_request],
size: 1,
max_tokens: 2,
};
// Skips the queue
let value = self.client.prefill(batch).await.is_ok();
// Update generation health
self.generation_health.store(value, Ordering::SeqCst);
value
}
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/infer.rs | /// Batching and inference logic
use crate::validation::{Validation, ValidationError};
use crate::{Entry, Queue, Token};
use crate::{GenerateRequest, PrefillToken};
use flume::r#async::RecvStream;
use flume::SendTimeoutError;
use futures::future::try_join_all;
use futures::stream::StreamExt;
use nohash_hasher::IntMap;
use std::sync::{
atomic::{AtomicBool, Ordering},
Arc,
};
use std::time::Duration;
use text_generation_client::{
Batch, CachedBatch, ClientError, GeneratedText, Generation, PrefillTokens, ShardedClient,
};
use thiserror::Error;
use tokio::sync::{Notify, OwnedSemaphorePermit, Semaphore, TryAcquireError};
use tokio::time::Instant;
use tracing::{info_span, instrument, Instrument, Span};
/// Inference struct
#[derive(Clone)]
pub struct Infer {
/// Validation
validation: Validation,
/// Request queue
queue: Queue,
/// Shared state
shared: Arc<Shared>,
/// Inference limit
limit_concurrent_requests: Arc<Semaphore>,
}
/// Infer shared state
struct Shared {
/// Batching background Tokio task notifier
batching_task: Notify,
}
impl Infer {
#[allow(clippy::too_many_arguments)]
pub(crate) fn new(
client: ShardedClient,
validation: Validation,
waiting_served_ratio: f32,
max_batch_prefill_tokens: u32,
max_batch_total_tokens: u32,
max_waiting_tokens: usize,
max_concurrent_requests: usize,
requires_padding: bool,
generation_health: Arc<AtomicBool>,
) -> Self {
// Infer shared state
let queue = Queue::new(requires_padding, 16);
let shared = Arc::new(Shared {
batching_task: Notify::new(),
});
// Spawn batching background task that contains all the inference logic
tokio::spawn(batching_task(
client,
waiting_served_ratio,
max_batch_prefill_tokens,
max_batch_total_tokens,
max_waiting_tokens,
queue.clone(),
shared.clone(),
generation_health,
));
// Inference limit with a semaphore
let semaphore = Arc::new(Semaphore::new(max_concurrent_requests));
Self {
validation,
queue,
shared,
limit_concurrent_requests: semaphore,
}
}
/// Add a new request to the queue and return a stream of InferStreamResponse
#[instrument(skip(self))]
pub(crate) async fn generate_stream(
&self,
request: GenerateRequest,
) -> Result<
(
OwnedSemaphorePermit,
RecvStream<Result<InferStreamResponse, InferError>>,
),
InferError,
> {
// Limit concurrent requests by acquiring a permit from the semaphore
let permit = self
.clone()
.limit_concurrent_requests
.try_acquire_owned()
.map_err(|err| {
metrics::increment_counter!("tgi_request_failure", "err" => "overloaded");
tracing::error!("{err}");
err
})?;
// Validate request
let valid_request = self.validation.validate(request).await.map_err(|err| {
metrics::increment_counter!("tgi_request_failure", "err" => "validation");
tracing::error!("{err}");
err
})?;
// MPSC channel to communicate with the background batching task
let (response_tx, response_rx) = flume::unbounded();
// Append the request to the queue
self.queue.append(Entry {
request: valid_request,
response_tx,
span: Span::current(),
temp_span: None,
queue_time: Instant::now(),
batch_time: None,
});
// Notify the background task that we have a new entry in the queue that needs
// to be batched
self.shared.batching_task.notify_one();
// Return stream
Ok((permit, response_rx.into_stream()))
}
/// Add a new request to the queue and return a InferResponse
#[instrument(skip(self))]
pub(crate) async fn generate(
&self,
request: GenerateRequest,
) -> Result<InferResponse, InferError> {
// Create stream and keep semaphore permit as long as generate lives
let (_permit, mut stream) = self.generate_stream(request).await?;
// Return values
let mut result_prefill = Vec::new();
let mut result_tokens = Vec::new();
let mut result_generated_text = None;
let mut result_start = None;
let mut result_queued = None;
// Iterate on stream
while let Some(response) = stream.next().await {
match response? {
// Add prefill tokens
InferStreamResponse::Prefill(tokens) => {
// Create Token objects
// We do that here instead of in the Python code as Rust for loops are faster
result_prefill = tokens
.ids
.into_iter()
.zip(tokens.logprobs.into_iter())
.zip(tokens.texts.into_iter())
.map(|((id, logprob), text)| PrefillToken { id, text, logprob })
.collect();
}
// Push last token
InferStreamResponse::Token(token) => result_tokens.push(token),
// Final message
// Set return values
InferStreamResponse::End {
token,
generated_text,
start,
queued,
} => {
result_tokens.push(token);
result_generated_text = Some(generated_text);
result_start = Some(start);
result_queued = Some(queued)
}
}
}
// Check that we received a `InferStreamResponse::End` message
if let (Some(generated_text), Some(queued), Some(start)) =
(result_generated_text, result_queued, result_start)
{
Ok(InferResponse {
prefill: result_prefill,
tokens: result_tokens,
generated_text,
queued,
start,
})
} else {
let err = InferError::IncompleteGeneration;
metrics::increment_counter!("tgi_request_failure", "err" => "incomplete");
tracing::error!("{err}");
Err(err)
}
}
/// Add best_of new requests to the queue and return a InferResponse of the sequence with
/// the highest log probability per token
#[instrument(skip(self))]
pub(crate) async fn generate_best_of(
&self,
request: GenerateRequest,
best_of: usize,
) -> Result<(InferResponse, Vec<InferResponse>), InferError> {
// validate best_of parameter separately
let best_of = self.validation.validate_best_of(best_of)?;
// create multiple generate requests
let mut infer_responses: Vec<InferResponse> =
try_join_all((0..best_of).map(|_| self.generate(request.clone()))).await?;
// get the sequence with the highest log probability per token
let mut max_index = 0;
let mut max_logprob: f32 = f32::MIN;
for (i, response) in infer_responses.iter().enumerate() {
// mean logprobs of the generated tokens
let sequence_logprob = response
.tokens
.iter()
.map(|token| token.logprob)
.sum::<f32>()
/ response.tokens.len() as f32;
// set best sequence
if sequence_logprob > max_logprob {
max_index = i;
max_logprob = sequence_logprob;
}
}
let best_response = infer_responses.remove(max_index);
Ok((best_response, infer_responses))
}
}
/// Batching logic
/// Will be launched in a background Tokio task
///
/// Batches requests and sends them to the inference server
#[allow(clippy::too_many_arguments)]
async fn batching_task(
mut client: ShardedClient,
waiting_served_ratio: f32,
max_batch_prefill_tokens: u32,
max_batch_total_tokens: u32,
max_waiting_tokens: usize,
queue: Queue,
shared: Arc<Shared>,
generation_health: Arc<AtomicBool>,
) {
// Infinite loop
loop {
// Wait for a notification from the Infer struct
shared.batching_task.notified().await;
// Get the next batch from the queue
// This batch might be smaller than the maximum batch size if there are not enough requests
// waiting in the queue
while let Some((mut entries, batch, span)) = queue
.next_batch(None, max_batch_prefill_tokens, max_batch_total_tokens)
.await
{
let mut cached_batch = prefill(&mut client, batch, &mut entries, &generation_health)
.instrument(span)
.await;
let mut waiting_tokens = 1;
// We loop until we do not receive any cached batch from the inference server (== until
// all requests have met their stopping criteria)
while let Some(batch) = cached_batch {
// Get current batch info
let batch_size = batch.size;
let batch_max_tokens = batch.max_tokens;
let mut batches = vec![batch];
metrics::gauge!("tgi_batch_current_size", batch_size as f64);
metrics::gauge!("tgi_batch_current_max_tokens", batch_max_tokens as f64);
let min_size = if waiting_tokens >= max_waiting_tokens {
// If we didn't onboard any new requests since >= max_waiting_tokens, we try
// to add a new batch even though its size might be small
None
} else {
// Minimum batch size
Some((batch_size as f32 * waiting_served_ratio).floor() as usize)
};
let token_budget = max_batch_total_tokens.saturating_sub(batch_max_tokens);
// Try to get a new batch
if let Some((mut new_entries, new_batch, span)) = queue
.next_batch(min_size, max_batch_prefill_tokens, token_budget)
.await
{
// Tracking metrics
if min_size.is_some() {
metrics::increment_counter!("tgi_batch_concat", "reason" => "backpressure");
} else {
metrics::increment_counter!("tgi_batch_concat", "reason" => "wait_exceeded");
}
entries.iter_mut().for_each(|(_, entry)| {
// Create a new span to add the info that this entry is waiting
// because a new batch is being computed
let entry_waiting_span = info_span!(parent: &entry.span, "waiting");
// Add relationships
span.follows_from(&entry_waiting_span);
entry_waiting_span.follows_from(&span);
// Update entry
entry.temp_span = Some(entry_waiting_span);
});
// Generate one token for this new batch to have the attention past in cache
let new_cached_batch =
prefill(&mut client, new_batch, &mut new_entries, &generation_health)
.instrument(span)
.await;
// Reset waiting counter
waiting_tokens = 1;
// Extend current batch with the new batch
if let Some(new_cached_batch) = new_cached_batch {
entries.extend(new_entries);
batches.push(new_cached_batch);
}
}
// Create span for this batch to add context to inference calls
let next_batch_size = entries.len();
let next_batch_span =
info_span!(parent: None, "batch", batch_size = next_batch_size);
entries.iter_mut().for_each(|(_, entry)| {
// Create a new span to link the batch back to this entry
let entry_batch_span = info_span!(parent: &entry.span, "infer");
// Add relationships
next_batch_span.follows_from(&entry_batch_span);
entry_batch_span.follows_from(&next_batch_span);
// Update entry
entry.temp_span = Some(entry_batch_span);
});
cached_batch = decode(&mut client, batches, &mut entries, &generation_health)
.instrument(next_batch_span)
.await;
waiting_tokens += 1;
}
metrics::gauge!("tgi_batch_current_size", 0.0);
metrics::gauge!("tgi_batch_current_max_tokens", 0.0);
}
}
}
#[instrument(skip_all)]
async fn prefill(
client: &mut ShardedClient,
batch: Batch,
entries: &mut IntMap<u64, Entry>,
generation_health: &Arc<AtomicBool>,
) -> Option<CachedBatch> {
let start_time = Instant::now();
let batch_id = batch.id;
metrics::increment_counter!("tgi_batch_inference_count", "method" => "prefill");
match client.prefill(batch).await {
Ok((generations, next_batch)) => {
// Update health
generation_health.store(true, Ordering::SeqCst);
// Send generated tokens and filter stopped entries
filter_send_generations(generations, entries);
// Filter next batch and remove requests that were stopped
let next_batch = filter_batch(client, next_batch, entries).await;
metrics::histogram!("tgi_batch_inference_duration", start_time.elapsed().as_secs_f64(), "method" => "prefill");
metrics::increment_counter!("tgi_batch_inference_success", "method" => "prefill");
next_batch
}
// If we have an error, we discard the whole batch
Err(err) => {
// Update health
generation_health.store(false, Ordering::SeqCst);
let _ = client.clear_cache(Some(batch_id)).await;
send_errors(err, entries);
metrics::increment_counter!("tgi_batch_inference_failure", "method" => "prefill");
None
}
}
}
#[instrument(skip_all)]
async fn decode(
client: &mut ShardedClient,
batches: Vec<CachedBatch>,
entries: &mut IntMap<u64, Entry>,
generation_health: &Arc<AtomicBool>,
) -> Option<CachedBatch> {
let start_time = Instant::now();
let batch_ids: Vec<u64> = batches.iter().map(|b| b.id).collect();
metrics::increment_counter!("tgi_batch_inference_count", "method" => "decode");
match client.decode(batches).await {
Ok((generations, next_batch)) => {
// Update health
generation_health.store(true, Ordering::SeqCst);
// Send generated tokens and filter stopped entries
filter_send_generations(generations, entries);
// Filter next batch and remove requests that were stopped
let next_batch = filter_batch(client, next_batch, entries).await;
metrics::histogram!("tgi_batch_inference_duration", start_time.elapsed().as_secs_f64(), "method" => "decode");
metrics::increment_counter!("tgi_batch_inference_success", "method" => "decode");
next_batch
}
// If we have an error, we discard the whole batch
Err(err) => {
generation_health.store(false, Ordering::SeqCst);
for id in batch_ids {
let _ = client.clear_cache(Some(id)).await;
}
send_errors(err, entries);
metrics::increment_counter!("tgi_batch_inference_failure", "method" => "decode");
None
}
}
}
/// Filter a `batch` and remove all requests not present in `entries`
#[instrument(skip_all)]
async fn filter_batch(
client: &mut ShardedClient,
next_batch: Option<CachedBatch>,
entries: &IntMap<u64, Entry>,
) -> Option<CachedBatch> {
let mut batch = next_batch?;
// No need to filter
if batch.size as usize == entries.len() {
return Some(batch);
}
let id = batch.id;
// Retain only requests that are still in entries
batch.request_ids.retain(|id| entries.contains_key(id));
if batch.request_ids.is_empty() {
// All requests have been filtered out
// Next batch is now empty
// Clear it from the Python shards cache
// We unwrap here as we need to panic since we cannot recover if this method fails
client.clear_cache(Some(id)).await.unwrap();
None
} else {
// Filter Python shard cache
// We unwrap here as we need to panic since we cannot recover if this method fails
client.filter_batch(id, batch.request_ids).await.unwrap()
}
}
/// Send one or multiple `InferStreamResponse` to Infer for all `entries`
/// and filter entries
#[instrument(skip_all)]
fn filter_send_generations(generations: Vec<Generation>, entries: &mut IntMap<u64, Entry>) {
generations.into_iter().for_each(|generation| {
let id = generation.request_id;
// Get entry
// We can `expect` here as the request id should always be in the entries
let entry = entries
.get(&id)
.expect("ID not found in entries. This is a bug.");
// Create and enter a span to link this function back to the entry
let _span = info_span!(parent: entry.temp_span.as_ref().expect("batch_span is None. This is a bug."), "send_generation", generation = ?generation).entered();
// Send generation responses back to the infer task
// If the receive an error from the Flume channel, it means that the client dropped the
// request and we need to stop generating hence why we unwrap_or(true)
let stopped = send_responses(generation, entry).map_err(|err| {
if let SendTimeoutError::Timeout(_) = *err {
tracing::error!("Entry response channel timed out.")
}
metrics::increment_counter!("tgi_request_failure", "err" => "dropped");
err
}).unwrap_or(true);
if stopped {
entries.remove(&id).expect("ID not found in entries. This is a bug.");
}
});
}
/// Send responses through the `entry` response channel
fn send_responses(
generation: Generation,
entry: &Entry,
) -> Result<bool, Box<SendTimeoutError<Result<InferStreamResponse, InferError>>>> {
// Return directly if the channel is disconnected
if entry.response_tx.is_disconnected() {
return Ok(true);
}
let mut stopped = false;
if let Some(prefill_tokens) = generation.prefill_tokens {
// Send message
entry.response_tx.send_timeout(
Ok(InferStreamResponse::Prefill(prefill_tokens)),
Duration::from_millis(10),
)?;
}
// Create last Token
let token = Token {
id: generation.token_id,
text: generation.token_text,
logprob: generation.token_logprob,
special: generation.token_is_special,
};
if let Some(generated_text) = generation.generated_text {
// Generation has ended
stopped = true;
// Send message
entry.response_tx.send_timeout(
Ok(InferStreamResponse::End {
token,
generated_text,
queued: entry.queue_time,
start: entry.batch_time.unwrap(),
}),
Duration::from_millis(10),
)?;
} else {
// Send message
entry.response_tx.send_timeout(
Ok(InferStreamResponse::Token(token)),
Duration::from_millis(10),
)?;
}
Ok(stopped)
}
/// Send errors to Infer for all `entries`
#[instrument(skip_all)]
fn send_errors(error: ClientError, entries: &mut IntMap<u64, Entry>) {
entries.drain().for_each(|(_, entry)| {
// Create and enter a span to link this function back to the entry
let _send_error_span = info_span!(parent: entry.temp_span.as_ref().expect("batch_span is None. This is a bug."), "send_error").entered();
let err = InferError::GenerationError(error.to_string());
metrics::increment_counter!("tgi_request_failure", "err" => "generation");
tracing::error!("{err}");
// unwrap_or is valid here as we don't care if the receiver is gone.
entry
.response_tx
.send_timeout(Err(err), Duration::from_millis(10))
.unwrap_or(());
});
}
#[derive(Debug)]
pub(crate) enum InferStreamResponse {
// Optional first message
Prefill(PrefillTokens),
// Intermediate messages
Token(Token),
// Last message
End {
token: Token,
generated_text: GeneratedText,
start: Instant,
queued: Instant,
},
}
#[derive(Debug)]
pub(crate) struct InferResponse {
pub(crate) prefill: Vec<PrefillToken>,
pub(crate) tokens: Vec<Token>,
pub(crate) generated_text: GeneratedText,
pub(crate) queued: Instant,
pub(crate) start: Instant,
}
#[derive(Debug, Error)]
pub enum InferError {
#[error("Request failed during generation: {0}")]
GenerationError(String),
#[error("Model is overloaded")]
Overloaded(#[from] TryAcquireError),
#[error("Input validation error: {0}")]
ValidationError(#[from] ValidationError),
#[error("Incomplete generation")]
IncompleteGeneration,
}
impl InferError {
pub(crate) fn error_type(&self) -> &str {
match self {
InferError::GenerationError(_) => "generation",
InferError::Overloaded(_) => "overloaded",
InferError::ValidationError(_) => "validation",
InferError::IncompleteGeneration => "incomplete_generation",
}
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/lib.rs | mod health;
/// Text Generation Inference Webserver
mod infer;
mod queue;
pub mod server;
mod validation;
use infer::Infer;
use queue::{Entry, Queue};
use serde::{Deserialize, Serialize};
use utoipa::ToSchema;
use validation::Validation;
/// Hub type
#[derive(Clone, Debug, Deserialize)]
pub struct HubModelInfo {
#[serde(rename(deserialize = "id"))]
pub model_id: String,
pub sha: Option<String>,
pub pipeline_tag: Option<String>,
}
#[derive(Clone, Debug, Serialize, ToSchema)]
pub struct Info {
/// Model info
#[schema(example = "bigscience/blomm-560m")]
pub model_id: String,
#[schema(nullable = true, example = "e985a63cdc139290c5f700ff1929f0b5942cced2")]
pub model_sha: Option<String>,
#[schema(example = "torch.float16")]
pub model_dtype: String,
#[schema(example = "cuda")]
pub model_device_type: String,
#[schema(nullable = true, example = "text-generation")]
pub model_pipeline_tag: Option<String>,
/// Router Parameters
#[schema(example = "128")]
pub max_concurrent_requests: usize,
#[schema(example = "2")]
pub max_best_of: usize,
#[schema(example = "4")]
pub max_stop_sequences: usize,
#[schema(example = "1024")]
pub max_input_length: usize,
#[schema(example = "2048")]
pub max_total_tokens: usize,
#[schema(example = "1.2")]
pub waiting_served_ratio: f32,
#[schema(example = "32000")]
pub max_batch_total_tokens: u32,
#[schema(example = "20")]
pub max_waiting_tokens: usize,
#[schema(example = "2")]
pub validation_workers: usize,
/// Router Info
#[schema(example = "0.5.0")]
pub version: &'static str,
#[schema(nullable = true, example = "null")]
pub sha: Option<&'static str>,
#[schema(nullable = true, example = "null")]
pub docker_label: Option<&'static str>,
}
#[derive(Clone, Debug, Deserialize, ToSchema)]
pub(crate) struct GenerateParameters {
#[serde(default)]
#[schema(exclusive_minimum = 0, nullable = true, default = "null", example = 1)]
pub best_of: Option<usize>,
#[serde(default)]
#[schema(
exclusive_minimum = 0.0,
nullable = true,
default = "null",
example = 0.5
)]
pub temperature: Option<f32>,
#[serde(default)]
#[schema(
exclusive_minimum = 0.0,
nullable = true,
default = "null",
example = 1.03
)]
pub repetition_penalty: Option<f32>,
#[serde(default)]
#[schema(exclusive_minimum = 0, nullable = true, default = "null", example = 10)]
pub top_k: Option<i32>,
#[serde(default)]
#[schema(
exclusive_minimum = 0.0,
maximum = 1.0,
nullable = true,
default = "null",
example = 0.95
)]
pub top_p: Option<f32>,
#[serde(default)]
#[schema(
exclusive_minimum = 0.0,
maximum = 1.0,
nullable = true,
default = "null",
example = 0.95
)]
pub typical_p: Option<f32>,
#[serde(default)]
#[schema(default = "false", example = true)]
pub do_sample: bool,
#[serde(default = "default_max_new_tokens")]
#[schema(exclusive_minimum = 0, exclusive_maximum = 512, default = "20")]
pub max_new_tokens: u32,
#[serde(default)]
#[schema(nullable = true, default = "null", example = false)]
pub return_full_text: Option<bool>,
#[serde(default)]
#[schema(inline, max_items = 4, example = json ! (["photographer"]))]
pub stop: Vec<String>,
#[serde(default)]
#[schema(nullable = true, default = "null", example = "null")]
pub truncate: Option<usize>,
#[serde(default)]
#[schema(default = "false", example = true)]
pub watermark: bool,
#[serde(default)]
#[schema(default = "true")]
pub details: bool,
#[serde(default)]
#[schema(default = "true")]
pub decoder_input_details: bool,
#[serde(default)]
#[schema(
exclusive_minimum = 0,
nullable = true,
default = "null",
example = "null"
)]
pub seed: Option<u64>,
}
fn default_max_new_tokens() -> u32 {
20
}
fn default_parameters() -> GenerateParameters {
GenerateParameters {
best_of: None,
temperature: None,
repetition_penalty: None,
top_k: None,
top_p: None,
typical_p: None,
do_sample: false,
max_new_tokens: default_max_new_tokens(),
return_full_text: None,
stop: Vec::new(),
truncate: None,
watermark: false,
details: false,
decoder_input_details: false,
seed: None,
}
}
#[derive(Clone, Debug, Deserialize, ToSchema)]
pub(crate) struct GenerateRequest {
#[schema(example = "My name is Olivier and I")]
pub inputs: String,
#[serde(default = "default_parameters")]
pub parameters: GenerateParameters,
}
#[derive(Clone, Debug, Deserialize, ToSchema)]
pub(crate) struct CompatGenerateRequest {
#[schema(example = "My name is Olivier and I")]
pub inputs: String,
#[serde(default = "default_parameters")]
pub parameters: GenerateParameters,
#[serde(default)]
#[schema(default = "false")]
pub stream: bool,
}
impl From<CompatGenerateRequest> for GenerateRequest {
fn from(req: CompatGenerateRequest) -> Self {
Self {
inputs: req.inputs,
parameters: req.parameters,
}
}
}
#[derive(Debug, Serialize, ToSchema)]
pub struct PrefillToken {
#[schema(example = 0)]
id: u32,
#[schema(example = "test")]
text: String,
#[schema(nullable = true, example = - 0.34)]
logprob: f32,
}
#[derive(Debug, Serialize, ToSchema)]
pub struct Token {
#[schema(example = 0)]
id: u32,
#[schema(example = "test")]
text: String,
#[schema(nullable = true, example = - 0.34)]
logprob: f32,
#[schema(example = "false")]
special: bool,
}
#[derive(Serialize, ToSchema)]
#[serde(rename_all(serialize = "snake_case"))]
pub(crate) enum FinishReason {
#[schema(rename = "length")]
Length,
#[serde(rename = "eos_token")]
#[schema(rename = "eos_token")]
EndOfSequenceToken,
#[schema(rename = "stop_sequence")]
StopSequence,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct BestOfSequence {
#[schema(example = "test")]
pub generated_text: String,
#[schema(example = "length")]
pub finish_reason: FinishReason,
#[schema(example = 1)]
pub generated_tokens: u32,
#[schema(nullable = true, example = 42)]
pub seed: Option<u64>,
pub prefill: Vec<PrefillToken>,
pub tokens: Vec<Token>,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct Details {
#[schema(example = "length")]
pub finish_reason: FinishReason,
#[schema(example = 1)]
pub generated_tokens: u32,
#[schema(nullable = true, example = 42)]
pub seed: Option<u64>,
pub prefill: Vec<PrefillToken>,
pub tokens: Vec<Token>,
#[serde(skip_serializing_if = "Option::is_none")]
pub best_of_sequences: Option<Vec<BestOfSequence>>,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct GenerateResponse {
#[schema(example = "test")]
pub generated_text: String,
#[serde(skip_serializing_if = "Option::is_none")]
pub details: Option<Details>,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct StreamDetails {
#[schema(example = "length")]
pub finish_reason: FinishReason,
#[schema(example = 1)]
pub generated_tokens: u32,
#[schema(nullable = true, example = 42)]
pub seed: Option<u64>,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct StreamResponse {
pub token: Token,
#[schema(nullable = true, default = "null", example = "test")]
pub generated_text: Option<String>,
#[schema(nullable = true, default = "null")]
pub details: Option<StreamDetails>,
}
#[derive(Serialize, ToSchema)]
pub(crate) struct ErrorResponse {
pub error: String,
pub error_type: String,
}
#[cfg(test)]
mod tests {
use std::io::Write;
use tokenizers::Tokenizer;
pub(crate) async fn get_tokenizer() -> Tokenizer {
if !std::path::Path::new("tokenizer.json").exists() {
let content = reqwest::get("https://huggingface.co/gpt2/raw/main/tokenizer.json")
.await
.unwrap()
.bytes()
.await
.unwrap();
let mut file = std::fs::File::create("tokenizer.json").unwrap();
file.write_all(&content).unwrap();
}
Tokenizer::from_file("tokenizer.json").unwrap()
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/main.rs | /// Text Generation Inference webserver entrypoint
use axum::http::HeaderValue;
use clap::Parser;
use opentelemetry::sdk::propagation::TraceContextPropagator;
use opentelemetry::sdk::trace;
use opentelemetry::sdk::trace::Sampler;
use opentelemetry::sdk::Resource;
use opentelemetry::{global, KeyValue};
use opentelemetry_otlp::WithExportConfig;
use std::net::{IpAddr, Ipv4Addr, SocketAddr};
use std::path::Path;
use std::time::Duration;
use text_generation_client::{ClientError, ShardedClient};
use text_generation_router::{server, HubModelInfo};
use thiserror::Error;
use tokenizers::{FromPretrainedParameters, Tokenizer};
use tower_http::cors::AllowOrigin;
use tracing_subscriber::layer::SubscriberExt;
use tracing_subscriber::util::SubscriberInitExt;
use tracing_subscriber::{EnvFilter, Layer};
/// App Configuration
#[derive(Parser, Debug)]
#[clap(author, version, about, long_about = None)]
struct Args {
#[clap(default_value = "128", long, env)]
max_concurrent_requests: usize,
#[clap(default_value = "2", long, env)]
max_best_of: usize,
#[clap(default_value = "4", long, env)]
max_stop_sequences: usize,
#[clap(default_value = "1024", long, env)]
max_input_length: usize,
#[clap(default_value = "2048", long, env)]
max_total_tokens: usize,
#[clap(default_value = "1.2", long, env)]
waiting_served_ratio: f32,
#[clap(default_value = "4096", long, env)]
max_batch_prefill_tokens: u32,
#[clap(long, env)]
max_batch_total_tokens: Option<u32>,
#[clap(default_value = "20", long, env)]
max_waiting_tokens: usize,
#[clap(default_value = "0.0.0.0", long, env)]
hostname: String,
#[clap(default_value = "3000", long, short, env)]
port: u16,
#[clap(default_value = "/tmp/text-generation-server-0", long, env)]
master_shard_uds_path: String,
#[clap(default_value = "bigscience/bloom", long, env)]
tokenizer_name: String,
#[clap(long, env)]
revision: Option<String>,
#[clap(default_value = "2", long, env)]
validation_workers: usize,
#[clap(long, env)]
json_output: bool,
#[clap(long, env)]
otlp_endpoint: Option<String>,
#[clap(long, env)]
cors_allow_origin: Option<Vec<String>>,
#[clap(long, env)]
ngrok: bool,
#[clap(long, env)]
ngrok_authtoken: Option<String>,
#[clap(long, env)]
ngrok_edge: Option<String>,
}
fn main() -> Result<(), RouterError> {
// Get args
let args = Args::parse();
// Pattern match configuration
let Args {
max_concurrent_requests,
max_best_of,
max_stop_sequences,
max_input_length,
max_total_tokens,
waiting_served_ratio,
max_batch_prefill_tokens,
max_batch_total_tokens,
max_waiting_tokens,
hostname,
port,
master_shard_uds_path,
tokenizer_name,
revision,
validation_workers,
json_output,
otlp_endpoint,
cors_allow_origin,
ngrok,
ngrok_authtoken,
ngrok_edge,
} = args;
// Validate args
if max_input_length >= max_total_tokens {
return Err(RouterError::ArgumentValidation(
"`max_input_length` must be < `max_total_tokens`".to_string(),
));
}
if max_input_length as u32 > max_batch_prefill_tokens {
return Err(RouterError::ArgumentValidation(format!("`max_batch_prefill_tokens` must be >= `max_input_length`. Given: {max_batch_prefill_tokens} and {max_input_length}")));
}
if validation_workers == 0 {
return Err(RouterError::ArgumentValidation(
"`validation_workers` must be > 0".to_string(),
));
}
if let Some(ref max_batch_total_tokens) = max_batch_total_tokens {
if max_batch_prefill_tokens > *max_batch_total_tokens {
return Err(RouterError::ArgumentValidation(format!("`max_batch_prefill_tokens` must be <= `max_batch_total_tokens`. Given: {max_batch_prefill_tokens} and {max_batch_total_tokens}")));
}
if max_total_tokens as u32 > *max_batch_total_tokens {
return Err(RouterError::ArgumentValidation(format!("`max_total_tokens` must be <= `max_batch_total_tokens`. Given: {max_total_tokens} and {max_batch_total_tokens}")));
}
}
// CORS allowed origins
// map to go inside the option and then map to parse from String to HeaderValue
// Finally, convert to AllowOrigin
let cors_allow_origin: Option<AllowOrigin> = cors_allow_origin.map(|cors_allow_origin| {
AllowOrigin::list(
cors_allow_origin
.iter()
.map(|origin| origin.parse::<HeaderValue>().unwrap()),
)
});
// Parse Huggingface hub token
let authorization_token = std::env::var("HUGGING_FACE_HUB_TOKEN").ok();
// Tokenizer instance
// This will only be used to validate payloads
let local_path = Path::new(&tokenizer_name);
let local_model = local_path.exists() && local_path.is_dir();
let tokenizer = if local_model {
// Load local tokenizer
Tokenizer::from_file(local_path.join("tokenizer.json")).ok()
} else {
// Download and instantiate tokenizer
// We need to download it outside of the Tokio runtime
let params = FromPretrainedParameters {
revision: revision.clone().unwrap_or("main".to_string()),
auth_token: authorization_token.clone(),
..Default::default()
};
Tokenizer::from_pretrained(tokenizer_name.clone(), Some(params)).ok()
};
// Launch Tokio runtime
tokio::runtime::Builder::new_multi_thread()
.enable_all()
.build()?
.block_on(async {
init_logging(otlp_endpoint, json_output);
if tokenizer.is_none() {
tracing::warn!(
"Could not find a fast tokenizer implementation for {tokenizer_name}"
);
tracing::warn!("Rust input length validation and truncation is disabled");
}
// Get Model info
let model_info = match local_model {
true => HubModelInfo {
model_id: tokenizer_name.clone(),
sha: None,
pipeline_tag: None,
},
false => get_model_info(&tokenizer_name, revision, authorization_token)
.await
.unwrap_or_else(|| {
tracing::warn!("Could not retrieve model info from the Hugging Face hub.");
HubModelInfo {
model_id: tokenizer_name.to_string(),
sha: None,
pipeline_tag: None,
}
}),
};
// if pipeline-tag == text-generation we default to return_full_text = true
let compat_return_full_text = match &model_info.pipeline_tag {
None => {
tracing::warn!("no pipeline tag found for model {tokenizer_name}");
false
}
Some(pipeline_tag) => pipeline_tag.as_str() == "text-generation",
};
// Instantiate sharded client from the master unix socket
let mut sharded_client = ShardedClient::connect_uds(master_shard_uds_path)
.await
.map_err(RouterError::Connection)?;
// Clear the cache; useful if the webserver rebooted
sharded_client
.clear_cache(None)
.await
.map_err(RouterError::Cache)?;
// Get info from the shard
let shard_info = sharded_client.info().await.map_err(RouterError::Info)?;
// Warmup model
tracing::info!("Warming up model");
let max_supported_batch_total_tokens = match sharded_client
.warmup(max_input_length as u32, max_batch_prefill_tokens)
.await
.map_err(RouterError::Warmup)?
{
// Older models do not support automatic max-batch-total-tokens
None => {
let max_batch_total_tokens = max_batch_total_tokens.unwrap_or(
16000.max((max_total_tokens as u32).max(max_batch_prefill_tokens)),
);
tracing::warn!("Model does not support automatic max batch total tokens");
max_batch_total_tokens
}
// Flash attention models return their max supported total tokens
Some(max_supported_batch_total_tokens) => {
// Warn if user added his own max-batch-total-tokens as we will ignore it
if max_batch_total_tokens.is_some() {
tracing::warn!(
"`--max-batch-total-tokens` is deprecated for Flash \
Attention models."
);
tracing::warn!(
"Inferred max batch total tokens: {max_supported_batch_total_tokens}"
);
}
if max_total_tokens as u32 > max_supported_batch_total_tokens {
return Err(RouterError::ArgumentValidation(format!("`max_total_tokens` must be <= `max_batch_total_tokens`. Given: {max_total_tokens} and {max_supported_batch_total_tokens}")));
}
max_supported_batch_total_tokens
}
};
tracing::info!("Setting max batch total tokens to {max_supported_batch_total_tokens}");
tracing::info!("Connected");
let addr = match hostname.parse() {
Ok(ip) => SocketAddr::new(ip, port),
Err(_) => {
tracing::warn!("Invalid hostname, defaulting to 0.0.0.0");
SocketAddr::new(IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0)), port)
}
};
// Run server
server::run(
model_info,
shard_info,
compat_return_full_text,
max_concurrent_requests,
max_best_of,
max_stop_sequences,
max_input_length,
max_total_tokens,
waiting_served_ratio,
max_batch_prefill_tokens,
max_supported_batch_total_tokens,
max_waiting_tokens,
sharded_client,
tokenizer,
validation_workers,
addr,
cors_allow_origin,
ngrok,
ngrok_authtoken,
ngrok_edge,
)
.await?;
Ok(())
})
}
/// Init logging using env variables LOG_LEVEL and LOG_FORMAT:
/// - otlp_endpoint is an optional URL to an Open Telemetry collector
/// - LOG_LEVEL may be TRACE, DEBUG, INFO, WARN or ERROR (default to INFO)
/// - LOG_FORMAT may be TEXT or JSON (default to TEXT)
fn init_logging(otlp_endpoint: Option<String>, json_output: bool) {
let mut layers = Vec::new();
// STDOUT/STDERR layer
let fmt_layer = tracing_subscriber::fmt::layer()
.with_file(true)
.with_line_number(true);
let fmt_layer = match json_output {
true => fmt_layer.json().flatten_event(true).boxed(),
false => fmt_layer.boxed(),
};
layers.push(fmt_layer);
// OpenTelemetry tracing layer
if let Some(otlp_endpoint) = otlp_endpoint {
global::set_text_map_propagator(TraceContextPropagator::new());
let tracer = opentelemetry_otlp::new_pipeline()
.tracing()
.with_exporter(
opentelemetry_otlp::new_exporter()
.tonic()
.with_endpoint(otlp_endpoint),
)
.with_trace_config(
trace::config()
.with_resource(Resource::new(vec![KeyValue::new(
"service.name",
"text-generation-inference.router",
)]))
.with_sampler(Sampler::AlwaysOn),
)
.install_batch(opentelemetry::runtime::Tokio);
if let Ok(tracer) = tracer {
layers.push(tracing_opentelemetry::layer().with_tracer(tracer).boxed());
axum_tracing_opentelemetry::init_propagator().unwrap();
};
}
// Filter events with LOG_LEVEL
let env_filter =
EnvFilter::try_from_env("LOG_LEVEL").unwrap_or_else(|_| EnvFilter::new("info"));
tracing_subscriber::registry()
.with(env_filter)
.with(layers)
.init();
}
/// get model info from the Huggingface Hub
pub async fn get_model_info(
model_id: &str,
revision: Option<String>,
token: Option<String>,
) -> Option<HubModelInfo> {
let revision = match revision {
None => {
tracing::warn!("`--revision` is not set");
tracing::warn!("We strongly advise to set it to a known supported commit.");
"main".to_string()
}
Some(revision) => revision,
};
let client = reqwest::Client::new();
// Poor man's urlencode
let revision = revision.replace('/', "%2F");
let url = format!("https://huggingface.co/api/models/{model_id}/revision/{revision}");
let mut builder = client.get(url).timeout(Duration::from_secs(5));
if let Some(token) = token {
builder = builder.bearer_auth(token);
}
let response = builder.send().await.ok()?;
if response.status().is_success() {
let hub_model_info: HubModelInfo =
serde_json::from_str(&response.text().await.ok()?).ok()?;
if let Some(sha) = &hub_model_info.sha {
tracing::info!(
"Serving revision {sha} of model {}",
hub_model_info.model_id
);
}
Some(hub_model_info)
} else {
None
}
}
#[derive(Debug, Error)]
enum RouterError {
#[error("Argument validation error: {0}")]
ArgumentValidation(String),
#[error("Unable to connect to the Python model shards: {0}")]
Connection(ClientError),
#[error("Unable to clear the Python model shards cache: {0}")]
Cache(ClientError),
#[error("Unable to get the Python model shards info: {0}")]
Info(ClientError),
#[error("Unable to warmup the Python model shards: {0}")]
Warmup(ClientError),
#[error("Tokio runtime failed to start: {0}")]
Tokio(#[from] std::io::Error),
#[error("Axum webserver failed: {0}")]
Axum(#[from] axum::BoxError),
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/queue.rs | use crate::infer::InferError;
use crate::infer::InferStreamResponse;
use crate::validation::ValidGenerateRequest;
use nohash_hasher::{BuildNoHashHasher, IntMap};
use std::collections::VecDeque;
use text_generation_client::{Batch, Request};
use tokio::sync::oneshot;
use tokio::time::Instant;
use tracing::{info_span, instrument, Span};
/// Queue entry
#[derive(Debug)]
pub(crate) struct Entry {
/// Request
pub request: ValidGenerateRequest,
/// Response sender to communicate between the Infer struct and the batching_task
pub response_tx: flume::Sender<Result<InferStreamResponse, InferError>>,
/// Span that will live as long as entry
pub span: Span,
/// Temporary span used as a guard when logging inference, wait times...
pub temp_span: Option<Span>,
/// Instant when this entry was queued
pub queue_time: Instant,
/// Instant when this entry was added to a batch
pub batch_time: Option<Instant>,
}
/// Request Queue
#[derive(Debug, Clone)]
pub(crate) struct Queue {
/// Channel to communicate with the background queue task
queue_sender: flume::Sender<QueueCommand>,
}
impl Queue {
pub(crate) fn new(requires_padding: bool, block_size: u32) -> Self {
// Create channel
let (queue_sender, queue_receiver) = flume::unbounded();
// Launch background queue task
tokio::spawn(queue_task(requires_padding, block_size, queue_receiver));
Self { queue_sender }
}
/// Append an entry to the queue
#[instrument(skip_all)]
pub(crate) fn append(&self, entry: Entry) {
// Send append command to the background task managing the state
// Unwrap is safe here
self.queue_sender
.send(QueueCommand::Append(Box::new(entry), Span::current()))
.unwrap();
}
// Get the next batch
#[instrument(skip(self))]
pub(crate) async fn next_batch(
&self,
min_size: Option<usize>,
prefill_token_budget: u32,
token_budget: u32,
) -> Option<NextBatch> {
// Create response channel
let (response_sender, response_receiver) = oneshot::channel();
// Send next batch command to the background task managing the state
// Unwrap is safe here
self.queue_sender
.send(QueueCommand::NextBatch {
min_size,
prefill_token_budget,
token_budget,
response_sender,
span: Span::current(),
})
.unwrap();
// Await on response channel
// Unwrap is safe here
response_receiver.await.unwrap()
}
}
// Background task responsible of the queue state
async fn queue_task(
requires_padding: bool,
block_size: u32,
receiver: flume::Receiver<QueueCommand>,
) {
let mut state = State::new(requires_padding, block_size);
while let Ok(cmd) = receiver.recv_async().await {
match cmd {
QueueCommand::Append(entry, span) => {
span.in_scope(|| state.append(*entry));
metrics::increment_gauge!("tgi_queue_size", 1.0);
}
QueueCommand::NextBatch {
min_size,
prefill_token_budget,
token_budget,
response_sender,
span,
} => span.in_scope(|| {
let next_batch = state.next_batch(min_size, prefill_token_budget, token_budget);
response_sender.send(next_batch).unwrap();
metrics::gauge!("tgi_queue_size", state.entries.len() as f64);
}),
}
}
}
/// Queue State
#[derive(Debug)]
struct State {
/// Queue entries organized in a Vec
entries: VecDeque<(u64, Entry)>,
/// Id of the next entry
next_id: u64,
/// Id of the next batch
next_batch_id: u64,
/// Whether the model is using padding
requires_padding: bool,
/// Paged Attention block size
block_size: u32,
}
impl State {
fn new(requires_padding: bool, block_size: u32) -> Self {
Self {
entries: VecDeque::with_capacity(128),
next_id: 0,
next_batch_id: 0,
requires_padding,
block_size,
}
}
/// Append an entry to the queue
fn append(&mut self, mut entry: Entry) {
// Create a span that will live as long as the entry is in the queue waiting to be batched
let queue_span = info_span!(parent: &entry.span, "queued");
entry.temp_span = Some(queue_span);
// Push entry in the queue
self.entries.push_back((self.next_id, entry));
self.next_id += 1;
}
// Get the next batch
fn next_batch(
&mut self,
min_size: Option<usize>,
prefill_token_budget: u32,
token_budget: u32,
) -> Option<NextBatch> {
if self.entries.is_empty() {
return None;
}
// Check if we have enough entries
if let Some(min_size) = min_size {
if self.entries.len() < min_size {
return None;
}
}
// Create span for this batch to add context to inference calls
let next_batch_span = info_span!(parent: None, "batch", batch_size = tracing::field::Empty);
next_batch_span.follows_from(&Span::current());
let mut batch_requests = Vec::with_capacity(self.entries.len());
let mut batch_entries =
IntMap::with_capacity_and_hasher(self.entries.len(), BuildNoHashHasher::default());
let mut max_input_length = 0;
let mut prefill_tokens: u32 = 0;
let mut decode_tokens: u32 = 0;
// Pop entries starting from the front of the queue
while let Some((id, mut entry)) = self.entries.pop_front() {
// Filter entries where the response receiver was dropped (== entries where the request
// was dropped by the client)
if entry.response_tx.is_disconnected() {
metrics::increment_counter!("tgi_request_failure", "err" => "dropped");
continue;
}
if self.requires_padding {
// We pad to max input length in the Python shards
// We need to take these padding tokens into the equation
max_input_length = max_input_length.max(entry.request.input_length);
prefill_tokens = (batch_requests.len() + 1) as u32 * max_input_length
} else {
// pad to block size
prefill_tokens += ((entry.request.input_length + self.block_size - 1)
/ self.block_size)
* self.block_size;
}
if self.requires_padding {
decode_tokens += entry.request.stopping_parameters.max_new_tokens;
} else {
// pad to block size
decode_tokens +=
((entry.request.stopping_parameters.max_new_tokens + self.block_size - 1)
/ self.block_size)
* self.block_size;
}
if prefill_tokens > prefill_token_budget
|| (prefill_tokens + decode_tokens) > token_budget
{
// Entry is over budget
// Add it back to the front
self.entries.push_front((id, entry));
break;
}
// Create a new span to link the batch back to this entry
let entry_batch_span = info_span!(parent: &entry.span, "infer");
// Add relationships
next_batch_span.follows_from(&entry_batch_span);
entry_batch_span.follows_from(&next_batch_span);
// Update entry
entry.temp_span = Some(entry_batch_span);
batch_requests.push(Request {
id,
prefill_logprobs: entry.request.decoder_input_details,
inputs: entry.request.inputs.clone(),
truncate: entry.request.truncate,
parameters: Some(entry.request.parameters.clone()),
stopping_parameters: Some(entry.request.stopping_parameters.clone()),
});
// Set batch_time
entry.batch_time = Some(Instant::now());
// Insert in batch_entries IntMap
batch_entries.insert(id, entry);
}
// Empty batch
if batch_requests.is_empty() {
return None;
}
// Check if our batch is big enough
if let Some(min_size) = min_size {
// Batch is too small
if batch_requests.len() < min_size {
// Add back entries to the queue in the correct order
for r in batch_requests.into_iter().rev() {
let id = r.id;
let entry = batch_entries.remove(&id).unwrap();
self.entries.push_front((id, entry));
}
return None;
}
}
// Final batch size
let size = batch_requests.len() as u32;
next_batch_span.record("batch_size", size);
let batch = Batch {
id: self.next_batch_id,
requests: batch_requests,
size,
max_tokens: (prefill_tokens + decode_tokens),
};
// Increment batch id
self.next_batch_id += 1;
metrics::histogram!("tgi_batch_next_size", batch.size as f64);
Some((batch_entries, batch, next_batch_span))
}
}
type NextBatch = (IntMap<u64, Entry>, Batch, Span);
#[derive(Debug)]
enum QueueCommand {
Append(Box<Entry>, Span),
NextBatch {
min_size: Option<usize>,
prefill_token_budget: u32,
token_budget: u32,
response_sender: oneshot::Sender<Option<NextBatch>>,
span: Span,
},
}
#[cfg(test)]
mod tests {
use super::*;
use text_generation_client::{NextTokenChooserParameters, StoppingCriteriaParameters};
use tracing::info_span;
fn default_entry() -> (
Entry,
flume::Receiver<Result<InferStreamResponse, InferError>>,
) {
let (response_tx, receiver_tx) = flume::unbounded();
let entry = Entry {
request: ValidGenerateRequest {
inputs: "".to_string(),
input_length: 0,
truncate: 0,
decoder_input_details: false,
parameters: NextTokenChooserParameters {
temperature: 0.0,
top_k: 0,
top_p: 0.0,
typical_p: 0.0,
do_sample: false,
seed: 0,
repetition_penalty: 0.0,
watermark: false,
},
stopping_parameters: StoppingCriteriaParameters {
ignore_eos_token: false,
max_new_tokens: 1,
stop_sequences: vec![],
},
},
response_tx,
span: info_span!("entry"),
temp_span: None,
queue_time: Instant::now(),
batch_time: None,
};
(entry, receiver_tx)
}
#[test]
fn test_append() {
let mut state = State::new(false, 1);
let (entry, _guard) = default_entry();
assert_eq!(state.next_id, 0);
assert_eq!(state.entries.len(), 0);
state.append(entry);
assert_eq!(state.next_id, 1);
assert_eq!(state.entries.len(), 1);
let (id, _) = state.entries.remove(0).unwrap();
assert_eq!(id, 0);
}
#[test]
fn test_next_batch_empty() {
let mut state = State::new(false, 1);
assert!(state.next_batch(None, 1, 1).is_none());
assert!(state.next_batch(Some(1), 1, 1).is_none());
}
#[test]
fn test_next_batch_min_size() {
let mut state = State::new(false, 1);
let (entry1, _guard1) = default_entry();
let (entry2, _guard2) = default_entry();
state.append(entry1);
state.append(entry2);
let (entries, batch, _) = state.next_batch(None, 2, 2).unwrap();
assert_eq!(entries.len(), 2);
assert!(entries.contains_key(&0));
assert!(entries.contains_key(&1));
assert!(entries.get(&0).unwrap().batch_time.is_some());
assert!(entries.get(&1).unwrap().batch_time.is_some());
assert_eq!(batch.id, 0);
assert_eq!(batch.size, 2);
assert_eq!(state.next_id, 2);
assert_eq!(state.entries.len(), 0);
assert_eq!(state.next_batch_id, 1);
let (entry3, _guard3) = default_entry();
state.append(entry3);
assert!(state.next_batch(Some(2), 2, 2).is_none());
assert_eq!(state.next_id, 3);
assert_eq!(state.entries.len(), 1);
let (id, _) = state.entries.remove(0).unwrap();
assert_eq!(id, 2);
}
#[test]
fn test_next_batch_token_budget() {
let mut state = State::new(false, 1);
let (entry1, _guard1) = default_entry();
let (entry2, _guard2) = default_entry();
state.append(entry1);
state.append(entry2);
let (entries, batch, _) = state.next_batch(None, 1, 1).unwrap();
assert_eq!(entries.len(), 1);
assert!(entries.contains_key(&0));
assert_eq!(batch.id, 0);
assert_eq!(batch.size, 1);
assert_eq!(state.next_id, 2);
assert_eq!(state.entries.len(), 1);
assert_eq!(state.next_batch_id, 1);
let (entry3, _guard3) = default_entry();
state.append(entry3);
let (entries, batch, _) = state.next_batch(None, 3, 3).unwrap();
assert_eq!(entries.len(), 2);
assert!(entries.contains_key(&1));
assert!(entries.contains_key(&2));
assert_eq!(batch.id, 1);
assert_eq!(batch.size, 2);
assert_eq!(state.next_id, 3);
assert_eq!(state.entries.len(), 0);
assert_eq!(state.next_batch_id, 2);
}
#[tokio::test]
async fn test_queue_append() {
let queue = Queue::new(false, 1);
let (entry, _guard) = default_entry();
queue.append(entry);
}
#[tokio::test]
async fn test_queue_next_batch_empty() {
let queue = Queue::new(false, 1);
assert!(queue.next_batch(None, 1, 1).await.is_none());
assert!(queue.next_batch(Some(1), 1, 1).await.is_none());
}
#[tokio::test]
async fn test_queue_next_batch_min_size() {
let queue = Queue::new(false, 1);
let (entry1, _guard1) = default_entry();
let (entry2, _guard2) = default_entry();
queue.append(entry1);
queue.append(entry2);
let (entries, batch, _) = queue.next_batch(None, 2, 2).await.unwrap();
assert_eq!(entries.len(), 2);
assert!(entries.contains_key(&0));
assert!(entries.contains_key(&1));
assert!(entries.get(&0).unwrap().batch_time.is_some());
assert!(entries.get(&1).unwrap().batch_time.is_some());
assert_eq!(batch.id, 0);
assert_eq!(batch.size, 2);
let (entry3, _guard3) = default_entry();
queue.append(entry3);
// Not enough requests pending
assert!(queue.next_batch(Some(2), 2, 2).await.is_none());
// Not enough token budget
assert!(queue.next_batch(Some(1), 0, 0).await.is_none());
// Ok
let (entries2, batch2, _) = queue.next_batch(Some(1), 2, 2).await.unwrap();
assert_eq!(entries2.len(), 1);
assert!(entries2.contains_key(&2));
assert!(entries2.get(&2).unwrap().batch_time.is_some());
assert_eq!(batch2.id, 1);
assert_eq!(batch2.size, 1);
}
#[tokio::test]
async fn test_queue_next_batch_token_budget() {
let queue = Queue::new(false, 1);
let (entry1, _guard1) = default_entry();
let (entry2, _guard2) = default_entry();
queue.append(entry1);
queue.append(entry2);
let (entries, batch, _) = queue.next_batch(None, 1, 1).await.unwrap();
assert_eq!(entries.len(), 1);
assert!(entries.contains_key(&0));
assert_eq!(batch.id, 0);
assert_eq!(batch.size, 1);
let (entry3, _guard3) = default_entry();
queue.append(entry3);
let (entries, batch, _) = queue.next_batch(None, 3, 3).await.unwrap();
assert_eq!(entries.len(), 2);
assert!(entries.contains_key(&1));
assert!(entries.contains_key(&2));
assert_eq!(batch.id, 1);
assert_eq!(batch.size, 2);
}
#[tokio::test]
async fn test_queue_next_batch_dropped_receiver() {
let queue = Queue::new(false, 1);
let (entry, _) = default_entry();
queue.append(entry);
assert!(queue.next_batch(None, 1, 1).await.is_none());
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/server.rs | /// HTTP Server logic
use crate::health::Health;
use crate::infer::{InferError, InferResponse, InferStreamResponse};
use crate::validation::ValidationError;
use crate::{
BestOfSequence, CompatGenerateRequest, Details, ErrorResponse, FinishReason,
GenerateParameters, GenerateRequest, GenerateResponse, HubModelInfo, Infer, Info, PrefillToken,
StreamDetails, StreamResponse, Token, Validation,
};
use axum::extract::Extension;
use axum::http::{HeaderMap, Method, StatusCode};
use axum::response::sse::{Event, KeepAlive, Sse};
use axum::response::{IntoResponse, Response};
use axum::routing::{get, post};
use axum::{http, Json, Router};
use axum_tracing_opentelemetry::opentelemetry_tracing_layer;
use futures::stream::StreamExt;
use futures::Stream;
use metrics_exporter_prometheus::{Matcher, PrometheusBuilder, PrometheusHandle};
use std::convert::Infallible;
use std::net::SocketAddr;
use std::sync::atomic::AtomicBool;
use std::sync::Arc;
use text_generation_client::{ShardInfo, ShardedClient};
use tokenizers::Tokenizer;
use tokio::signal;
use tokio::time::Instant;
use tower_http::cors::{AllowOrigin, CorsLayer};
use tracing::{info_span, instrument, Instrument};
use utoipa::OpenApi;
use utoipa_swagger_ui::SwaggerUi;
/// Generate tokens if `stream == false` or a stream of token if `stream == true`
#[utoipa::path(
post,
tag = "Text Generation Inference",
path = "/",
request_body = CompatGenerateRequest,
responses(
(status = 200, description = "Generated Text",
content(
("application/json" = GenerateResponse),
("text/event-stream" = StreamResponse),
)),
(status = 424, description = "Generation Error", body = ErrorResponse,
example = json ! ({"error": "Request failed during generation"})),
(status = 429, description = "Model is overloaded", body = ErrorResponse,
example = json ! ({"error": "Model is overloaded"})),
(status = 422, description = "Input validation error", body = ErrorResponse,
example = json ! ({"error": "Input validation error"})),
(status = 500, description = "Incomplete generation", body = ErrorResponse,
example = json ! ({"error": "Incomplete generation"})),
)
)]
#[instrument(skip(infer, req))]
async fn compat_generate(
Extension(default_return_full_text): Extension<bool>,
infer: Extension<Infer>,
Json(mut req): Json<CompatGenerateRequest>,
) -> Result<Response, (StatusCode, Json<ErrorResponse>)> {
// default return_full_text given the pipeline_tag
if req.parameters.return_full_text.is_none() {
req.parameters.return_full_text = Some(default_return_full_text)
}
// switch on stream
if req.stream {
Ok(generate_stream(infer, Json(req.into()))
.await
.into_response())
} else {
let (headers, Json(generation)) = generate(infer, Json(req.into())).await?;
// wrap generation inside a Vec to match api-inference
Ok((headers, Json(vec![generation])).into_response())
}
}
/// Text Generation Inference endpoint info
#[utoipa::path(
get,
tag = "Text Generation Inference",
path = "/info",
responses((status = 200, description = "Served model info", body = Info))
)]
#[instrument]
async fn get_model_info(info: Extension<Info>) -> Json<Info> {
Json(info.0)
}
#[utoipa::path(
get,
tag = "Text Generation Inference",
path = "/health",
responses(
(status = 200, description = "Everything is working fine"),
(status = 503, description = "Text generation inference is down", body = ErrorResponse,
example = json ! ({"error": "unhealthy", "error_type": "healthcheck"})),
)
)]
#[instrument(skip(health))]
/// Health check method
async fn health(mut health: Extension<Health>) -> Result<(), (StatusCode, Json<ErrorResponse>)> {
match health.check().await {
true => Ok(()),
false => Err((
StatusCode::SERVICE_UNAVAILABLE,
Json(ErrorResponse {
error: "unhealthy".to_string(),
error_type: "healthcheck".to_string(),
}),
)),
}
}
/// Generate tokens
#[utoipa::path(
post,
tag = "Text Generation Inference",
path = "/generate",
request_body = GenerateRequest,
responses(
(status = 200, description = "Generated Text", body = GenerateResponse),
(status = 424, description = "Generation Error", body = ErrorResponse,
example = json ! ({"error": "Request failed during generation"})),
(status = 429, description = "Model is overloaded", body = ErrorResponse,
example = json ! ({"error": "Model is overloaded"})),
(status = 422, description = "Input validation error", body = ErrorResponse,
example = json ! ({"error": "Input validation error"})),
(status = 500, description = "Incomplete generation", body = ErrorResponse,
example = json ! ({"error": "Incomplete generation"})),
)
)]
#[instrument(
skip_all,
fields(
parameters = ? req.parameters,
total_time,
validation_time,
queue_time,
inference_time,
time_per_token,
seed,
)
)]
async fn generate(
infer: Extension<Infer>,
Json(req): Json<GenerateRequest>,
) -> Result<(HeaderMap, Json<GenerateResponse>), (StatusCode, Json<ErrorResponse>)> {
let span = tracing::Span::current();
let start_time = Instant::now();
metrics::increment_counter!("tgi_request_count");
tracing::debug!("Input: {}", req.inputs);
let compute_characters = req.inputs.chars().count();
let mut add_prompt = None;
if req.parameters.return_full_text.unwrap_or(false) {
add_prompt = Some(req.inputs.clone());
}
let details = req.parameters.details || req.parameters.decoder_input_details;
// Inference
let (response, best_of_responses) = match req.parameters.best_of {
Some(best_of) if best_of > 1 => {
let (response, best_of_responses) = infer.generate_best_of(req, best_of).await?;
(response, Some(best_of_responses))
}
_ => (infer.generate(req).await?, None),
};
// Token details
let details = match details {
true => {
// convert best_of_responses
let best_of_sequences = best_of_responses.map(|responses: Vec<InferResponse>| {
responses
.into_iter()
.map(|response: InferResponse| {
// Add prompt if return_full_text
let mut output_text = response.generated_text.text;
if let Some(prompt) = &add_prompt {
output_text = prompt.clone() + &output_text;
}
BestOfSequence {
generated_text: output_text,
finish_reason: FinishReason::from(
response.generated_text.finish_reason,
),
generated_tokens: response.generated_text.generated_tokens,
prefill: response.prefill,
tokens: response.tokens,
seed: response.generated_text.seed,
}
})
.collect()
});
Some(Details {
finish_reason: FinishReason::from(response.generated_text.finish_reason),
generated_tokens: response.generated_text.generated_tokens,
prefill: response.prefill,
tokens: response.tokens,
seed: response.generated_text.seed,
best_of_sequences,
})
}
false => None,
};
// Timings
let total_time = start_time.elapsed();
let validation_time = response.queued - start_time;
let queue_time = response.start - response.queued;
let inference_time = Instant::now() - response.start;
let time_per_token = inference_time / response.generated_text.generated_tokens;
// Tracing metadata
span.record("total_time", format!("{total_time:?}"));
span.record("validation_time", format!("{validation_time:?}"));
span.record("queue_time", format!("{queue_time:?}"));
span.record("inference_time", format!("{inference_time:?}"));
span.record("time_per_token", format!("{time_per_token:?}"));
span.record("seed", format!("{:?}", response.generated_text.seed));
// Headers
let mut headers = HeaderMap::new();
headers.insert("x-compute-type", "gpu+optimized".parse().unwrap());
headers.insert(
"x-compute-time",
total_time.as_millis().to_string().parse().unwrap(),
);
headers.insert(
"x-compute-characters",
compute_characters.to_string().parse().unwrap(),
);
headers.insert(
"x-total-time",
total_time.as_millis().to_string().parse().unwrap(),
);
headers.insert(
"x-validation-time",
validation_time.as_millis().to_string().parse().unwrap(),
);
headers.insert(
"x-queue-time",
queue_time.as_millis().to_string().parse().unwrap(),
);
headers.insert(
"x-inference-time",
inference_time.as_millis().to_string().parse().unwrap(),
);
headers.insert(
"x-time-per-token",
time_per_token.as_millis().to_string().parse().unwrap(),
);
// Metrics
metrics::increment_counter!("tgi_request_success");
metrics::histogram!("tgi_request_duration", total_time.as_secs_f64());
metrics::histogram!(
"tgi_request_validation_duration",
validation_time.as_secs_f64()
);
metrics::histogram!("tgi_request_queue_duration", queue_time.as_secs_f64());
metrics::histogram!(
"tgi_request_inference_duration",
inference_time.as_secs_f64()
);
metrics::histogram!(
"tgi_request_mean_time_per_token_duration",
time_per_token.as_secs_f64()
);
metrics::histogram!(
"tgi_request_generated_tokens",
response.generated_text.generated_tokens as f64
);
// Send response
let mut output_text = response.generated_text.text;
if let Some(prompt) = add_prompt {
output_text = prompt + &output_text;
}
tracing::debug!("Output: {}", output_text);
tracing::info!("Success");
let response = GenerateResponse {
generated_text: output_text,
details,
};
Ok((headers, Json(response)))
}
/// Generate a stream of token using Server-Sent Events
#[utoipa::path(
post,
tag = "Text Generation Inference",
path = "/generate_stream",
request_body = GenerateRequest,
responses(
(status = 200, description = "Generated Text", body = StreamResponse,
content_type = "text/event-stream"),
(status = 424, description = "Generation Error", body = ErrorResponse,
example = json ! ({"error": "Request failed during generation"}),
content_type = "text/event-stream"),
(status = 429, description = "Model is overloaded", body = ErrorResponse,
example = json ! ({"error": "Model is overloaded"}),
content_type = "text/event-stream"),
(status = 422, description = "Input validation error", body = ErrorResponse,
example = json ! ({"error": "Input validation error"}),
content_type = "text/event-stream"),
(status = 500, description = "Incomplete generation", body = ErrorResponse,
example = json ! ({"error": "Incomplete generation"}),
content_type = "text/event-stream"),
)
)]
#[instrument(
skip_all,
fields(
parameters = ? req.parameters,
total_time,
validation_time,
queue_time,
inference_time,
time_per_token,
seed,
)
)]
async fn generate_stream(
Extension(infer): Extension<Infer>,
Json(req): Json<GenerateRequest>,
) -> (
HeaderMap,
Sse<impl Stream<Item = Result<Event, Infallible>>>,
) {
let span = tracing::Span::current();
let start_time = Instant::now();
metrics::increment_counter!("tgi_request_count");
tracing::debug!("Input: {}", req.inputs);
let compute_characters = req.inputs.chars().count();
let mut headers = HeaderMap::new();
headers.insert("x-compute-type", "gpu+optimized".parse().unwrap());
headers.insert(
"x-compute-characters",
compute_characters.to_string().parse().unwrap(),
);
headers.insert("X-Accel-Buffering", "no".parse().unwrap());
let stream = async_stream::stream! {
// Inference
let mut end_reached = false;
let mut error = false;
let mut add_prompt = None;
if req.parameters.return_full_text.unwrap_or(false) {
add_prompt = Some(req.inputs.clone());
}
let details = req.parameters.details;
let best_of = req.parameters.best_of.unwrap_or(1);
if best_of != 1 {
let err = InferError::from(ValidationError::BestOfStream);
metrics::increment_counter!("tgi_request_failure", "err" => "validation");
tracing::error!("{err}");
yield Ok(Event::from(err));
} else if req.parameters.decoder_input_details {
let err = InferError::from(ValidationError::PrefillDetailsStream);
metrics::increment_counter!("tgi_request_failure", "err" => "validation");
tracing::error!("{err}");
yield Ok(Event::from(err));
} else {
match infer.generate_stream(req).instrument(info_span!(parent: &span, "async_stream")).await {
// Keep permit as long as generate_stream lives
Ok((_permit, mut response_stream)) => {
// Server-Sent Event stream
while let Some(response) = response_stream.next().await {
match response {
Ok(response) => {
match response {
// Prefill is ignored
InferStreamResponse::Prefill(_) => {}
// Yield event for every new token
InferStreamResponse::Token(token) => {
tracing::debug!(parent: &span, "Token: {:?}", token);
// StreamResponse
let stream_token = StreamResponse {
token,
generated_text: None,
details: None,
};
yield Ok(Event::default().json_data(stream_token).unwrap())
}
// Yield event for last token and compute timings
InferStreamResponse::End {
token,
generated_text,
start,
queued,
} => {
// Token details
let details = match details {
true => Some(StreamDetails {
finish_reason: FinishReason::from(generated_text.finish_reason),
generated_tokens: generated_text.generated_tokens,
seed: generated_text.seed,
}),
false => None,
};
// Timings
let total_time = start_time.elapsed();
let validation_time = queued - start_time;
let queue_time = start - queued;
let inference_time = Instant::now() - start;
let time_per_token = inference_time / generated_text.generated_tokens;
// Tracing metadata
span.record("total_time", format!("{total_time:?}"));
span.record("validation_time", format!("{validation_time:?}"));
span.record("queue_time", format!("{queue_time:?}"));
span.record("inference_time", format!("{inference_time:?}"));
span.record("time_per_token", format!("{time_per_token:?}"));
span.record("seed", format!("{:?}", generated_text.seed));
// Metrics
metrics::increment_counter!("tgi_request_success");
metrics::histogram!("tgi_request_duration", total_time.as_secs_f64());
metrics::histogram!("tgi_request_validation_duration", validation_time.as_secs_f64());
metrics::histogram!("tgi_request_queue_duration", queue_time.as_secs_f64());
metrics::histogram!("tgi_request_inference_duration", inference_time.as_secs_f64());
metrics::histogram!("tgi_request_mean_time_per_token_duration", time_per_token.as_secs_f64());
metrics::histogram!("tgi_request_generated_tokens", generated_text.generated_tokens as f64);
// StreamResponse
end_reached = true;
let mut output_text = generated_text.text;
if let Some(prompt) = add_prompt {
output_text = prompt + &output_text;
}
tracing::debug!(parent: &span, "Output: {}", output_text);
tracing::info!(parent: &span, "Success");
let stream_token = StreamResponse {
token,
generated_text: Some(output_text),
details
};
yield Ok(Event::default().json_data(stream_token).unwrap());
break;
}
}
}
// yield error
Err(err) => {
error = true;
yield Ok(Event::from(err));
break;
}
}
}
},
// yield error
Err(err) => {
error = true;
yield Ok(Event::from(err));
}
}
// Check if generation reached the end
// Skip if we already sent an error
if !end_reached && !error {
let err = InferError::IncompleteGeneration;
metrics::increment_counter!("tgi_request_failure", "err" => "incomplete");
tracing::error!("{err}");
yield Ok(Event::from(err));
}
}
};
(headers, Sse::new(stream).keep_alive(KeepAlive::default()))
}
/// Prometheus metrics scrape endpoint
#[utoipa::path(
get,
tag = "Text Generation Inference",
path = "/metrics",
responses((status = 200, description = "Prometheus Metrics", body = String))
)]
async fn metrics(prom_handle: Extension<PrometheusHandle>) -> String {
prom_handle.render()
}
/// Serving method
#[allow(clippy::too_many_arguments)]
pub async fn run(
model_info: HubModelInfo,
shard_info: ShardInfo,
compat_return_full_text: bool,
max_concurrent_requests: usize,
max_best_of: usize,
max_stop_sequences: usize,
max_input_length: usize,
max_total_tokens: usize,
waiting_served_ratio: f32,
max_batch_prefill_tokens: u32,
max_batch_total_tokens: u32,
max_waiting_tokens: usize,
client: ShardedClient,
tokenizer: Option<Tokenizer>,
validation_workers: usize,
addr: SocketAddr,
allow_origin: Option<AllowOrigin>,
ngrok: bool,
ngrok_authtoken: Option<String>,
ngrok_edge: Option<String>,
) -> Result<(), axum::BoxError> {
// OpenAPI documentation
#[derive(OpenApi)]
#[openapi(
paths(
health,
get_model_info,
compat_generate,
generate,
generate_stream,
metrics,
),
components(
schemas(
Info,
CompatGenerateRequest,
GenerateRequest,
GenerateParameters,
PrefillToken,
Token,
GenerateResponse,
BestOfSequence,
Details,
FinishReason,
StreamResponse,
StreamDetails,
ErrorResponse,
)
),
tags(
(name = "Text Generation Inference", description = "Hugging Face Text Generation Inference API")
),
info(
title = "Text Generation Inference",
license(
name = "Apache 2.0",
url = "https://www.apache.org/licenses/LICENSE-2.0"
)
)
)]
struct ApiDoc;
// Create state
let validation = Validation::new(
validation_workers,
tokenizer,
max_best_of,
max_stop_sequences,
max_input_length,
max_total_tokens,
);
let generation_health = Arc::new(AtomicBool::new(false));
let health_ext = Health::new(client.clone(), generation_health.clone());
let infer = Infer::new(
client,
validation,
waiting_served_ratio,
max_batch_prefill_tokens,
max_batch_total_tokens,
max_waiting_tokens,
max_concurrent_requests,
shard_info.requires_padding,
generation_health,
);
// Duration buckets
let duration_matcher = Matcher::Suffix(String::from("duration"));
let n_duration_buckets = 35;
let mut duration_buckets = Vec::with_capacity(n_duration_buckets);
// Minimum duration in seconds
let mut value = 0.0001;
for _ in 0..n_duration_buckets {
// geometric sequence
value *= 1.5;
duration_buckets.push(value);
}
// Input Length buckets
let input_length_matcher = Matcher::Full(String::from("tgi_request_input_length"));
let input_length_buckets: Vec<f64> = (0..100)
.map(|x| (max_input_length as f64 / 100.0) * (x + 1) as f64)
.collect();
// Generated tokens buckets
let generated_tokens_matcher = Matcher::Full(String::from("tgi_request_generated_tokens"));
let generated_tokens_buckets: Vec<f64> = (0..100)
.map(|x| (max_total_tokens as f64 / 100.0) * (x + 1) as f64)
.collect();
// Input Length buckets
let max_new_tokens_matcher = Matcher::Full(String::from("tgi_request_max_new_tokens"));
let max_new_tokens_buckets: Vec<f64> = (0..100)
.map(|x| (max_total_tokens as f64 / 100.0) * (x + 1) as f64)
.collect();
// Batch size buckets
let batch_size_matcher = Matcher::Full(String::from("tgi_batch_next_size"));
let batch_size_buckets: Vec<f64> = (0..1024).map(|x| (x + 1) as f64).collect();
// Prometheus handler
let builder = PrometheusBuilder::new()
.set_buckets_for_metric(duration_matcher, &duration_buckets)
.unwrap()
.set_buckets_for_metric(input_length_matcher, &input_length_buckets)
.unwrap()
.set_buckets_for_metric(generated_tokens_matcher, &generated_tokens_buckets)
.unwrap()
.set_buckets_for_metric(max_new_tokens_matcher, &max_new_tokens_buckets)
.unwrap()
.set_buckets_for_metric(batch_size_matcher, &batch_size_buckets)
.unwrap();
let prom_handle = builder
.install_recorder()
.expect("failed to install metrics recorder");
// CORS layer
let allow_origin = allow_origin.unwrap_or(AllowOrigin::any());
let cors_layer = CorsLayer::new()
.allow_methods([Method::GET, Method::POST])
.allow_headers([http::header::CONTENT_TYPE])
.allow_origin(allow_origin);
// Endpoint info
let info = Info {
model_id: model_info.model_id,
model_sha: model_info.sha,
model_dtype: shard_info.dtype,
model_device_type: shard_info.device_type,
model_pipeline_tag: model_info.pipeline_tag,
max_concurrent_requests,
max_best_of,
max_stop_sequences,
max_input_length,
max_total_tokens,
waiting_served_ratio,
max_batch_total_tokens,
max_waiting_tokens,
validation_workers,
version: env!("CARGO_PKG_VERSION"),
sha: option_env!("VERGEN_GIT_SHA"),
docker_label: option_env!("DOCKER_LABEL"),
};
// Create router
let app = Router::new()
.merge(SwaggerUi::new("/docs").url("/api-doc/openapi.json", ApiDoc::openapi()))
// Base routes
.route("/", post(compat_generate))
.route("/info", get(get_model_info))
.route("/generate", post(generate))
.route("/generate_stream", post(generate_stream))
// AWS Sagemaker route
.route("/invocations", post(compat_generate))
// Base Health route
.route("/health", get(health))
// Inference API health route
.route("/", get(health))
// AWS Sagemaker health route
.route("/ping", get(health))
// Prometheus metrics route
.route("/metrics", get(metrics))
.layer(Extension(info))
.layer(Extension(health_ext.clone()))
.layer(Extension(compat_return_full_text))
.layer(Extension(infer))
.layer(Extension(prom_handle.clone()))
.layer(opentelemetry_tracing_layer())
.layer(cors_layer);
if ngrok {
#[cfg(feature = "ngrok")]
{
use ngrok::config::TunnelBuilder;
let _ = addr;
let authtoken =
ngrok_authtoken.expect("`ngrok-authtoken` must be set when using ngrok tunneling");
let edge = ngrok_edge.expect("`ngrok-edge` must be set when using ngrok tunneling");
let tunnel = ngrok::Session::builder()
.authtoken(authtoken)
.connect()
.await
.unwrap()
.labeled_tunnel()
.label("edge", edge);
let listener = tunnel.listen().await.unwrap();
// Run prom metrics and health locally too
tokio::spawn(
axum::Server::bind(&addr)
.serve(
Router::new()
.route("/health", get(health))
.route("/metrics", get(metrics))
.layer(Extension(health_ext))
.layer(Extension(prom_handle))
.into_make_service(),
)
//Wait until all requests are finished to shut down
.with_graceful_shutdown(shutdown_signal()),
);
// Run server
axum::Server::builder(listener)
.serve(app.into_make_service())
//Wait until all requests are finished to shut down
.with_graceful_shutdown(shutdown_signal())
.await?;
}
#[cfg(not(feature = "ngrok"))]
{
let _ngrok_authtoken = ngrok_authtoken;
let _ngrok_domain = ngrok_domain;
let _ngrok_username = ngrok_username;
let _ngrok_password = ngrok_password;
panic!("`text-generation-router` was compiled without the `ngrok` feature");
}
} else {
// Run server
axum::Server::bind(&addr)
.serve(app.into_make_service())
// Wait until all requests are finished to shut down
.with_graceful_shutdown(shutdown_signal())
.await?;
}
Ok(())
}
/// Shutdown signal handler
async fn shutdown_signal() {
let ctrl_c = async {
signal::ctrl_c()
.await
.expect("failed to install Ctrl+C handler");
};
#[cfg(unix)]
let terminate = async {
signal::unix::signal(signal::unix::SignalKind::terminate())
.expect("failed to install signal handler")
.recv()
.await;
};
#[cfg(not(unix))]
let terminate = std::future::pending::<()>();
tokio::select! {
_ = ctrl_c => {},
_ = terminate => {},
}
tracing::info!("signal received, starting graceful shutdown");
opentelemetry::global::shutdown_tracer_provider();
}
impl From<i32> for FinishReason {
fn from(finish_reason: i32) -> Self {
let finish_reason = text_generation_client::FinishReason::from_i32(finish_reason).unwrap();
match finish_reason {
text_generation_client::FinishReason::Length => FinishReason::Length,
text_generation_client::FinishReason::EosToken => FinishReason::EndOfSequenceToken,
text_generation_client::FinishReason::StopSequence => FinishReason::StopSequence,
}
}
}
/// Convert to Axum supported formats
impl From<InferError> for (StatusCode, Json<ErrorResponse>) {
fn from(err: InferError) -> Self {
let status_code = match err {
InferError::GenerationError(_) => StatusCode::FAILED_DEPENDENCY,
InferError::Overloaded(_) => StatusCode::TOO_MANY_REQUESTS,
InferError::ValidationError(_) => StatusCode::UNPROCESSABLE_ENTITY,
InferError::IncompleteGeneration => StatusCode::INTERNAL_SERVER_ERROR,
};
(
status_code,
Json(ErrorResponse {
error: err.to_string(),
error_type: err.error_type().to_string(),
}),
)
}
}
impl From<InferError> for Event {
fn from(err: InferError) -> Self {
Event::default()
.json_data(ErrorResponse {
error: err.to_string(),
error_type: err.error_type().to_string(),
})
.unwrap()
}
}
| 0 |
hf_public_repos/text-generation-inference/router | hf_public_repos/text-generation-inference/router/src/validation.rs | /// Payload validation logic
use crate::validation::ValidationError::{BestOfSampling, BestOfSeed, EmptyInput};
use crate::{GenerateParameters, GenerateRequest};
use rand::{thread_rng, Rng};
use text_generation_client::{NextTokenChooserParameters, StoppingCriteriaParameters};
use thiserror::Error;
use tokenizers::tokenizer::Tokenizer;
use tokenizers::TruncationDirection;
use tokio::sync::oneshot;
use tracing::{instrument, Span};
/// Validation
#[derive(Debug, Clone)]
pub struct Validation {
/// Validation parameters
max_best_of: usize,
max_stop_sequences: usize,
max_input_length: usize,
max_total_tokens: usize,
/// Channel to communicate with the background tokenization task
sender: Option<flume::Sender<TokenizerRequest>>,
}
impl Validation {
pub(crate) fn new(
workers: usize,
tokenizer: Option<Tokenizer>,
max_best_of: usize,
max_stop_sequences: usize,
max_input_length: usize,
max_total_tokens: usize,
) -> Self {
// If we have a fast tokenizer
let sender = if let Some(tokenizer) = tokenizer {
// Create channel
let (validation_sender, validation_receiver) = flume::unbounded();
// Create workers
for _ in 0..workers {
let tokenizer_clone = tokenizer.clone();
let receiver_clone = validation_receiver.clone();
// Spawn worker
tokio::task::spawn_blocking(move || {
tokenizer_worker(tokenizer_clone, receiver_clone)
});
}
Some(validation_sender)
} else {
None
};
Self {
max_best_of,
sender,
max_stop_sequences,
max_input_length,
max_total_tokens,
}
}
#[instrument(skip_all)]
async fn validate_input(
&self,
inputs: String,
truncate: Option<usize>,
max_new_tokens: u32,
) -> Result<(String, usize), ValidationError> {
// If we have a fast tokenizer
if let Some(sender) = &self.sender {
// Create response channel
let (response_sender, response_receiver) = oneshot::channel();
// Send request to the background validation task
// Unwrap is safe here
sender
.send(((inputs, truncate), response_sender, Span::current()))
.unwrap();
// Await on response channel
// Unwrap is safe here
let (inputs, input_length) = response_receiver.await.unwrap()?;
// Get total tokens
let total_tokens = input_length + max_new_tokens as usize;
// Validate MaxTotalTokens
if total_tokens > self.max_total_tokens {
return Err(ValidationError::MaxTotalTokens(
self.max_total_tokens,
input_length,
max_new_tokens,
));
}
// Validate InputLength
if input_length > self.max_input_length {
return Err(ValidationError::InputLength(
self.max_input_length,
input_length,
));
}
metrics::histogram!("tgi_request_input_length", input_length as f64);
Ok((inputs, input_length))
}
// Return inputs without validation
else {
// In this case, we don't know the real length in tokens of the inputs
// However, the inputs will be truncated by the python servers
// We make sure that truncate + max_new_tokens <= self.max_total_tokens
let input_length = truncate.unwrap_or(self.max_input_length);
// Validate MaxNewTokens
if (input_length as u32 + max_new_tokens) > self.max_total_tokens as u32 {
return Err(ValidationError::MaxNewTokens(
self.max_total_tokens - self.max_input_length,
max_new_tokens,
));
}
Ok((inputs, input_length))
}
}
/// Validate a payload and get the number of tokens in the input
#[instrument(skip_all)]
pub(crate) async fn validate(
&self,
request: GenerateRequest,
) -> Result<ValidGenerateRequest, ValidationError> {
let GenerateParameters {
best_of,
temperature,
repetition_penalty,
top_k,
top_p,
typical_p,
do_sample,
max_new_tokens,
stop: stop_sequences,
truncate,
seed,
watermark,
decoder_input_details,
..
} = request.parameters;
// sampling must be true when best_of > 1
let best_of = best_of.unwrap_or(1);
let sampling = do_sample
|| temperature.is_some()
|| top_k.is_some()
|| top_p.is_some()
|| typical_p.is_some();
if best_of > 1 && !sampling {
return Err(BestOfSampling);
}
let temperature = temperature.unwrap_or(1.0);
if temperature <= 0.0 {
return Err(ValidationError::Temperature);
}
let repetition_penalty = repetition_penalty.unwrap_or(1.0);
if repetition_penalty <= 0.0 {
return Err(ValidationError::RepetitionPenalty);
}
// Different because the proto default value is not a valid value
// for the user
let top_p = top_p
.map(|value| {
if value <= 0.0 || value >= 1.0 {
return Err(ValidationError::TopP);
}
Ok(value)
})
.unwrap_or(Ok(1.0))?;
let typical_p = typical_p
.map(|value| {
if value <= 0.0 || value >= 1.0 {
return Err(ValidationError::TypicalP);
}
Ok(value)
})
.unwrap_or(Ok(1.0))?;
let top_k: u32 = top_k
.map(|value| {
if value <= 0 {
return Err(ValidationError::TopK);
}
Ok(value as u32)
})
.unwrap_or(Ok(0))?;
if max_new_tokens == 0 {
return Err(ValidationError::NegativeMaxNewTokens);
}
if stop_sequences.len() > self.max_stop_sequences {
return Err(ValidationError::StopSequence(
self.max_stop_sequences,
stop_sequences.len(),
));
}
// If seed is None, assign a random one
let seed = match seed {
None => thread_rng().gen(),
Some(seed) => {
if best_of > 1 {
return Err(BestOfSeed);
}
seed
}
};
// Check if inputs is empty
if request.inputs.is_empty() {
return Err(EmptyInput);
}
// Check if truncate is strictly positive and less than max_input_length
let truncate = truncate
.map(|value| {
if value == 0 || value > self.max_input_length {
return Err(ValidationError::Truncate(self.max_input_length, value));
}
Ok(Some(value))
})
.unwrap_or(Ok(None))?;
// Validate inputs
let (inputs, input_length) = self
.validate_input(request.inputs, truncate, max_new_tokens)
.await?;
let parameters = NextTokenChooserParameters {
temperature,
repetition_penalty,
top_k,
top_p,
typical_p,
do_sample,
seed,
watermark,
};
let stopping_parameters = StoppingCriteriaParameters {
max_new_tokens,
stop_sequences,
ignore_eos_token: false,
};
metrics::histogram!("tgi_request_max_new_tokens", max_new_tokens as f64);
Ok(ValidGenerateRequest {
inputs,
decoder_input_details,
input_length: input_length as u32,
truncate: truncate.unwrap_or(self.max_input_length) as u32,
parameters,
stopping_parameters,
})
}
/// Validate the best_of parameter
#[instrument(skip_all)]
pub(crate) fn validate_best_of(&self, best_of: usize) -> Result<usize, ValidationError> {
if self.max_best_of == 1 && best_of != 1 {
return Err(ValidationError::BestOfDisabled);
}
if best_of > self.max_best_of {
return Err(ValidationError::BestOf(self.max_best_of, best_of));
}
Ok(best_of)
}
}
/// Start tokenization workers
fn tokenizer_worker(tokenizer: Tokenizer, receiver: flume::Receiver<TokenizerRequest>) {
// Loop over requests
while let Ok(((inputs, truncate), response_tx, parent_span)) = receiver.recv() {
parent_span.in_scope(|| {
response_tx
.send(prepare_input(inputs, truncate, &tokenizer))
.unwrap_or(())
})
}
}
/// Get input length and optionally truncate it
fn prepare_input(
inputs: String,
truncate: Option<usize>,
tokenizer: &Tokenizer,
) -> Result<(String, usize), ValidationError> {
// Get the number of tokens in the input
let mut encoding = tokenizer
.encode(inputs.clone(), true)
.map_err(|err| ValidationError::Tokenizer(err.to_string()))?;
// Optionally truncate
let (inputs, input_length) = match truncate {
// Truncate is some and < encoding length
Some(truncate) if truncate < encoding.len() => {
// truncate encoding and decode new inputs
encoding.truncate(truncate, 0, TruncationDirection::Left);
let inputs = tokenizer
.decode(Vec::from(encoding.get_ids()), false)
.map_err(|err| ValidationError::Tokenizer(err.to_string()))?;
(inputs, encoding.len())
}
// Nothing to do
_ => (inputs, encoding.len()),
};
Ok((inputs, input_length))
}
type TokenizerRequest = (
(String, Option<usize>),
oneshot::Sender<Result<(String, usize), ValidationError>>,
Span,
);
#[derive(Debug)]
pub(crate) struct ValidGenerateRequest {
pub inputs: String,
pub input_length: u32,
pub truncate: u32,
pub decoder_input_details: bool,
pub parameters: NextTokenChooserParameters,
pub stopping_parameters: StoppingCriteriaParameters,
}
#[derive(Error, Debug)]
pub enum ValidationError {
#[error("`best_of` must be > 0 and <= {0}. Given: {1}")]
BestOf(usize, usize),
#[error("`best_of` != 1 is not allowed for this endpoint")]
BestOfDisabled,
#[error("you must use sampling when `best_of` is > 1")]
BestOfSampling,
#[error("`seed` must not be set when `best_of` > 1")]
BestOfSeed,
#[error("`best_of` != 1 is not supported when streaming tokens")]
BestOfStream,
#[error("`decoder_input_details` == true is not supported when streaming tokens")]
PrefillDetailsStream,
#[error("`temperature` must be strictly positive")]
Temperature,
#[error("`repetition_penalty` must be strictly positive")]
RepetitionPenalty,
#[error("`top_p` must be > 0.0 and < 1.0")]
TopP,
#[error("`top_k` must be strictly positive")]
TopK,
#[error("`truncate` must be strictly positive and less than {0}. Given: {1}")]
Truncate(usize, usize),
#[error("`typical_p` must be > 0.0 and < 1.0")]
TypicalP,
#[error("`max_new_tokens` must be strictly positive")]
NegativeMaxNewTokens,
#[error("`max_new_tokens` must be <= {0}. Given: {1}")]
MaxNewTokens(usize, u32),
#[error("`inputs` tokens + `max_new_tokens` must be <= {0}. Given: {1} `inputs` tokens and {2} `max_new_tokens`")]
MaxTotalTokens(usize, usize, u32),
#[error("`inputs` must have less than {0} tokens. Given: {1}")]
InputLength(usize, usize),
#[error("`inputs` cannot be empty")]
EmptyInput,
#[error("`stop` supports up to {0} stop sequences. Given: {1}")]
StopSequence(usize, usize),
#[error("tokenizer error {0}")]
Tokenizer(String),
}
#[cfg(test)]
mod tests {
use super::*;
use crate::default_parameters;
use crate::tests::get_tokenizer;
#[tokio::test]
async fn test_validation_max_new_tokens() {
let tokenizer = None;
let max_best_of = 2;
let max_stop_sequence = 3;
let max_input_length = 4;
let max_total_tokens = 5;
let workers = 1;
let validation = Validation::new(
workers,
tokenizer,
max_best_of,
max_stop_sequence,
max_input_length,
max_total_tokens,
);
let max_new_tokens = 10;
match validation
.validate_input("Hello".to_string(), None, max_new_tokens)
.await
{
Err(ValidationError::MaxNewTokens(1, 10)) => (),
_ => panic!("Unexpected not max new tokens"),
}
}
#[tokio::test]
async fn test_validation_input_length() {
let tokenizer = Some(get_tokenizer().await);
let max_best_of = 2;
let max_stop_sequence = 3;
let max_input_length = 4;
let max_total_tokens = 5;
let workers = 1;
let validation = Validation::new(
workers,
tokenizer,
max_best_of,
max_stop_sequence,
max_input_length,
max_total_tokens,
);
let max_new_tokens = 10;
match validation
.validate_input("Hello".to_string(), None, max_new_tokens)
.await
{
Err(ValidationError::MaxTotalTokens(5, 1, 10)) => (),
_ => panic!("Unexpected not max new tokens"),
}
}
#[tokio::test]
async fn test_validation_best_of_sampling() {
let tokenizer = Some(get_tokenizer().await);
let max_best_of = 2;
let max_stop_sequence = 3;
let max_input_length = 4;
let max_total_tokens = 5;
let workers = 1;
let validation = Validation::new(
workers,
tokenizer,
max_best_of,
max_stop_sequence,
max_input_length,
max_total_tokens,
);
match validation
.validate(GenerateRequest {
inputs: "Hello".to_string(),
parameters: GenerateParameters {
best_of: Some(2),
do_sample: false,
..default_parameters()
},
})
.await
{
Err(ValidationError::BestOfSampling) => (),
_ => panic!("Unexpected not best of sampling"),
}
}
#[tokio::test]
async fn test_validation_top_p() {
let tokenizer = Some(get_tokenizer().await);
let max_best_of = 2;
let max_stop_sequence = 3;
let max_input_length = 4;
let max_total_tokens = 5;
let workers = 1;
let validation = Validation::new(
workers,
tokenizer,
max_best_of,
max_stop_sequence,
max_input_length,
max_total_tokens,
);
match validation
.validate(GenerateRequest {
inputs: "Hello".to_string(),
parameters: GenerateParameters {
top_p: Some(1.0),
..default_parameters()
},
})
.await
{
Err(ValidationError::TopP) => (),
_ => panic!("Unexpected top_p"),
}
match validation
.validate(GenerateRequest {
inputs: "Hello".to_string(),
parameters: GenerateParameters {
top_p: Some(0.99),
max_new_tokens: 1,
..default_parameters()
},
})
.await
{
Ok(_) => (),
_ => panic!("Unexpected top_p error"),
}
let valid_request = validation
.validate(GenerateRequest {
inputs: "Hello".to_string(),
parameters: GenerateParameters {
top_p: None,
max_new_tokens: 1,
..default_parameters()
},
})
.await
.unwrap();
// top_p == 1.0 is invalid for users to ask for but it's the default resolved value.
assert_eq!(valid_request.parameters.top_p, 1.0);
}
}
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/Makefile | include Makefile-flash-att
include Makefile-flash-att-v2
include Makefile-vllm
unit-tests:
pytest -s -vv -m "not private" tests
gen-server:
# Compile protos
pip install grpcio-tools==1.51.1 mypy-protobuf==3.4.0 'types-protobuf>=3.20.4' --no-cache-dir
mkdir text_generation_server/pb || true
python -m grpc_tools.protoc -I../proto --python_out=text_generation_server/pb \
--grpc_python_out=text_generation_server/pb --mypy_out=text_generation_server/pb ../proto/generate.proto
find text_generation_server/pb/ -type f -name "*.py" -print0 -exec sed -i -e 's/^\(import.*pb2\)/from . \1/g' {} \;
touch text_generation_server/pb/__init__.py
install-torch:
# Install specific version of torch
pip install torch --extra-index-url https://download.pytorch.org/whl/cu118 --no-cache-dir
install: gen-server install-torch
pip install pip --upgrade
pip install -r requirements.txt
pip install -e ".[bnb, accelerate]"
run-dev:
SAFETENSORS_FAST_GPU=1 python -m torch.distributed.run --nproc_per_node=2 text_generation_server/cli.py serve bigscience/bloom-560m --sharded
export-requirements:
poetry export -o requirements.txt -E bnb -E quantize --without-hashes
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/Makefile-flash-att | flash_att_commit := 3a9bfd076f98746c73362328958dbc68d145fbec
flash-attention:
# Clone flash attention
pip install packaging
git clone https://github.com/HazyResearch/flash-attention.git
build-flash-attention: flash-attention
cd flash-attention && git fetch && git checkout $(flash_att_commit)
cd flash-attention && python setup.py build
cd flash-attention/csrc/rotary && python setup.py build
cd flash-attention/csrc/layer_norm && python setup.py build
install-flash-attention: build-flash-attention
pip uninstall flash_attn rotary_emb dropout_layer_norm -y || true
cd flash-attention && python setup.py install && cd csrc/layer_norm && python setup.py install && cd ../rotary && python setup.py install | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/Makefile-flash-att-v2 | flash_att_v2_commit := 4f285b354796fb17df8636485b9a04df3ebbb7dc
flash-attention-v2:
# Clone flash attention
pip install packaging
git clone https://github.com/HazyResearch/flash-attention.git flash-attention-v2
build-flash-attention-v2: flash-attention-v2
cd flash-attention-v2 && git fetch && git checkout $(flash_att_v2_commit)
cd flash-attention-v2 && python setup.py build
install-flash-attention-v2: build-flash-attention-v2
cd flash-attention-v2 && python setup.py install | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/Makefile-vllm | vllm_commit := d284b831c17f42a8ea63369a06138325f73c4cf9
vllm:
# Clone vllm
git clone https://github.com/OlivierDehaene/vllm.git
build-vllm: vllm
cd vllm && git fetch && git checkout $(vllm_commit)
cd vllm && python setup.py build
install-vllm: build-vllm
pip uninstall vllm -y || true
cd vllm && python setup.py install | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/README.md | # Text Generation Inference Python gRPC Server
A Python gRPC server for Text Generation Inference
## Install
```shell
make install
```
## Run
```shell
make run-dev
``` | 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/poetry.lock | # This file is automatically @generated by Poetry 1.5.1 and should not be changed by hand.
[[package]]
name = "accelerate"
version = "0.20.3"
description = "Accelerate"
optional = false
python-versions = ">=3.7.0"
files = [
{file = "accelerate-0.20.3-py3-none-any.whl", hash = "sha256:147183e7a2215f7bd45a7af3b986a963daa8a61fa58b0912b9473049e011ad15"},
{file = "accelerate-0.20.3.tar.gz", hash = "sha256:79a896978c20dac270083d42bf033f4c9a80dcdd6b946f1ca92d8d6d0f0f5ba9"},
]
[package.dependencies]
numpy = ">=1.17"
packaging = ">=20.0"
psutil = "*"
pyyaml = "*"
torch = ">=1.6.0"
[package.extras]
dev = ["black (>=23.1,<24.0)", "datasets", "deepspeed", "evaluate", "hf-doc-builder (>=0.3.0)", "parameterized", "pytest", "pytest-subtests", "pytest-xdist", "rich", "ruff (>=0.0.241)", "scikit-learn", "scipy", "tqdm", "transformers", "urllib3 (<2.0.0)"]
quality = ["black (>=23.1,<24.0)", "hf-doc-builder (>=0.3.0)", "ruff (>=0.0.241)", "urllib3 (<2.0.0)"]
rich = ["rich"]
sagemaker = ["sagemaker"]
test-dev = ["datasets", "deepspeed", "evaluate", "scikit-learn", "scipy", "tqdm", "transformers"]
test-prod = ["parameterized", "pytest", "pytest-subtests", "pytest-xdist"]
test-trackers = ["comet-ml", "tensorboard", "wandb"]
testing = ["datasets", "deepspeed", "evaluate", "parameterized", "pytest", "pytest-subtests", "pytest-xdist", "scikit-learn", "scipy", "tqdm", "transformers"]
[[package]]
name = "aiohttp"
version = "3.8.5"
description = "Async http client/server framework (asyncio)"
optional = true
python-versions = ">=3.6"
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accelerate = ["accelerate"]
bnb = ["bitsandbytes"]
quantize = ["accelerate", "datasets", "texttable"]
[metadata]
lock-version = "2.0"
python-versions = ">=3.9,<3.13"
content-hash = "6b6dbd9e11bc2f71cd88e2ab50adce249a722fea02e7cdcf5fe1b94c7b997a57"
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/pyproject.toml | [tool.poetry]
name = "text-generation-server"
version = "1.0.0"
description = "Text Generation Inference Python gRPC Server"
authors = ["Olivier Dehaene <olivier@huggingface.co>"]
[tool.poetry.scripts]
text-generation-server = 'text_generation_server.cli:app'
[tool.poetry.dependencies]
python = ">=3.9,<3.13"
protobuf = "^4.21.7"
grpcio = "^1.51.1"
grpcio-status = "^1.51.1"
grpcio-reflection = "^1.51.1"
grpc-interceptor = "^0.15.0"
typer = "^0.6.1"
accelerate = { version = "^0.20.0", optional = true }
bitsandbytes = { version = "^0.41.1", optional = true }
safetensors = "^0.3.2"
loguru = "^0.6.0"
opentelemetry-api = "^1.15.0"
opentelemetry-exporter-otlp = "^1.15.0"
opentelemetry-instrumentation-grpc = "^0.36b0"
hf-transfer = "^0.1.2"
sentencepiece = "^0.1.97"
tokenizers = "^0.13.3"
huggingface-hub = "^0.14.1"
transformers = "^4.31.0"
einops = "^0.6.1"
texttable = { version = "^1.6.7", optional = true }
datasets = { version = "^2.14.0", optional = true }
peft = "^0.4.0"
torch = {version = "^2.0.1+cu118", source = "pytorch-gpu-src"}
scipy = "^1.11.1"
[tool.poetry.extras]
accelerate = ["accelerate"]
bnb = ["bitsandbytes"]
quantize = ["texttable", "datasets", "accelerate"]
[tool.poetry.group.dev.dependencies]
grpcio-tools = "^1.51.1"
pytest = "^7.3.0"
[[tool.poetry.source]]
name = "pytorch-gpu-src"
url = "https://download.pytorch.org/whl/cu118"
priority = "explicit"
[tool.pytest.ini_options]
markers = ["private: marks tests as requiring an admin hf token (deselect with '-m \"not private\"')"]
[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"
| 0 |
hf_public_repos/text-generation-inference | hf_public_repos/text-generation-inference/server/requirements.txt | --extra-index-url https://download.pytorch.org/whl/cu118
accelerate==0.20.3 ; python_version >= "3.9" and python_version < "3.13"
backoff==2.2.1 ; python_version >= "3.9" and python_version < "3.13"
certifi==2023.7.22 ; python_version >= "3.9" and python_version < "3.13"
charset-normalizer==3.2.0 ; python_version >= "3.9" and python_version < "3.13"
click==8.1.6 ; python_version >= "3.9" and python_version < "3.13"
cmake==3.27.0 ; platform_system == "Linux" and platform_machine == "x86_64" and python_version >= "3.9" and python_version < "3.13"
colorama==0.4.6 ; python_version >= "3.9" and python_version < "3.13" and (sys_platform == "win32" or platform_system == "Windows")
deprecated==1.2.14 ; python_version >= "3.9" and python_version < "3.13"
einops==0.6.1 ; python_version >= "3.9" and python_version < "3.13"
filelock==3.12.2 ; python_version >= "3.9" and python_version < "3.13"
fsspec==2023.6.0 ; python_version >= "3.9" and python_version < "3.13"
googleapis-common-protos==1.60.0 ; python_version >= "3.9" and python_version < "3.13"
grpc-interceptor==0.15.2 ; python_version >= "3.9" and python_version < "3.13"
grpcio-reflection==1.56.2 ; python_version >= "3.9" and python_version < "3.13"
grpcio-status==1.56.2 ; python_version >= "3.9" and python_version < "3.13"
grpcio==1.56.2 ; python_version >= "3.9" and python_version < "3.13"
hf-transfer==0.1.3 ; python_version >= "3.9" and python_version < "3.13"
huggingface-hub==0.14.1 ; python_version >= "3.9" and python_version < "3.13"
idna==3.4 ; python_version >= "3.9" and python_version < "3.13"
jinja2==3.1.2 ; python_version >= "3.9" and python_version < "3.13"
lit==16.0.6 ; platform_system == "Linux" and platform_machine == "x86_64" and python_version >= "3.9" and python_version < "3.13"
loguru==0.6.0 ; python_version >= "3.9" and python_version < "3.13"
markupsafe==2.1.3 ; python_version >= "3.9" and python_version < "3.13"
mpmath==1.3.0 ; python_version >= "3.9" and python_version < "3.13"
networkx==3.1 ; python_version >= "3.9" and python_version < "3.13"
numpy==1.25.2 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-api==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-exporter-otlp-proto-grpc==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-exporter-otlp-proto-http==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-exporter-otlp==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-instrumentation-grpc==0.36b0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-instrumentation==0.36b0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-proto==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-sdk==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
opentelemetry-semantic-conventions==0.36b0 ; python_version >= "3.9" and python_version < "3.13"
packaging==23.1 ; python_version >= "3.9" and python_version < "3.13"
peft==0.4.0 ; python_version >= "3.9" and python_version < "3.13"
protobuf==4.23.4 ; python_version >= "3.9" and python_version < "3.13"
psutil==5.9.5 ; python_version >= "3.9" and python_version < "3.13"
pyyaml==6.0.1 ; python_version >= "3.9" and python_version < "3.13"
regex==2023.6.3 ; python_version >= "3.9" and python_version < "3.13"
requests==2.31.0 ; python_version >= "3.9" and python_version < "3.13"
safetensors==0.3.2 ; python_version >= "3.9" and python_version < "3.13"
scipy==1.11.1 ; python_version >= "3.9" and python_version < "3.13"
sentencepiece==0.1.99 ; python_version >= "3.9" and python_version < "3.13"
setuptools==68.0.0 ; python_version >= "3.9" and python_version < "3.13"
sympy==1.12 ; python_version >= "3.9" and python_version < "3.13"
tokenizers==0.13.3 ; python_version >= "3.9" and python_version < "3.13"
torch==2.0.1+cu118 ; python_version >= "3.9" and python_version < "3.13"
tqdm==4.65.0 ; python_version >= "3.9" and python_version < "3.13"
transformers==4.31.0 ; python_version >= "3.9" and python_version < "3.13"
triton==2.0.0 ; platform_system == "Linux" and platform_machine == "x86_64" and python_version >= "3.9" and python_version < "3.13"
typer==0.6.1 ; python_version >= "3.9" and python_version < "3.13"
typing-extensions==4.7.1 ; python_version >= "3.9" and python_version < "3.13"
urllib3==2.0.4 ; python_version >= "3.9" and python_version < "3.13"
win32-setctime==1.1.0 ; python_version >= "3.9" and python_version < "3.13" and sys_platform == "win32"
wrapt==1.15.0 ; python_version >= "3.9" and python_version < "3.13"
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/custom_kernels/setup.py | from setuptools import setup
from torch.utils.cpp_extension import BuildExtension, CUDAExtension
setup(
name="custom_kernels",
ext_modules=[
CUDAExtension(
name="custom_kernels.fused_bloom_attention_cuda",
sources=["custom_kernels/fused_bloom_attention_cuda.cu"],
extra_compile_args=["-arch=compute_80", "-std=c++17"],
),
CUDAExtension(
name="custom_kernels.fused_attention_cuda",
sources=["custom_kernels/fused_attention_cuda.cu"],
extra_compile_args=["-arch=compute_80", "-std=c++17"],
),
],
cmdclass={"build_ext": BuildExtension},
)
| 0 |
hf_public_repos/text-generation-inference/server/custom_kernels | hf_public_repos/text-generation-inference/server/custom_kernels/custom_kernels/fused_attention_cuda.cu | #include <ATen/Dispatch.h>
#include <THC/THCAtomics.cuh>
#include <ATen/ATen.h>
#include <torch/torch.h>
#include <vector>
#include <optional>
/**
* Friendly reminder of how multithreading works in CUDA: https://developer.nvidia.com/blog/even-easier-introduction-cuda
* Check example at https://github.com/thomasw21/LinearTransformers/blob/main/model/attention/fast_weight/fast_weight_cuda.cu
**/
// Available in pytorch main
//#define DISPATCH_CASE_FLOATING_TYPES(...) \
// at::AT_DISPATCH_CASE(at::ScalarType::Double, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::Float, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::Half, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::BFloat16, __VA_ARGS__) \
/*
* Forward passes
*/
/**
* cast to fp32 if in fp16 + mask + softmax computation in fp32 + cast back to original dtype
**/
template<typename attention_scores_scalar, int64_t min_kv_length_shard_size_per_thread>
__global__ void forward_masked_softmax_kernel(
const torch::PackedTensorAccessor32<attention_scores_scalar, 2, torch::RestrictPtrTraits> attention_scores, // [B, KV]
const torch::PackedTensorAccessor32<bool, 2, torch::RestrictPtrTraits> mask, // [B, KV]
torch::PackedTensorAccessor32<attention_scores_scalar, 2, torch::RestrictPtrTraits> result, // [B, KV]
const int64_t effective_kv_length,
const dim3 blockDim,
const int64_t rows_per_block,
const int64_t kv_length,
const int64_t batch_size
) {
const auto row_id = threadIdx.x / effective_kv_length;
const auto effective_kv_length_id = threadIdx.x % effective_kv_length;
const auto kv_length_start = effective_kv_length_id * min_kv_length_shard_size_per_thread;
auto kv_length_end_ = (effective_kv_length_id + 1) * min_kv_length_shard_size_per_thread;
kv_length_end_ = (kv_length_end_ > kv_length) ? kv_length : kv_length_end_;
const auto kv_length_end = kv_length_end_;
const auto batch_id = blockIdx.x * rows_per_block + row_id;
// We need 2 float storage for each row, one for max computation, the other for normalizing exponential
extern __shared__ float temp_storage[];
const auto row_id_mem_offset = row_id * 2;
if (effective_kv_length_id == 0) {
temp_storage[row_id_mem_offset] = -std::numeric_limits<float>::infinity();
temp_storage[row_id_mem_offset + 1] = 0;
}
__syncthreads();
// Compute mask and max
if (batch_id < batch_size) {
float thread_max = -std::numeric_limits<float>::infinity();
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
if (mask[batch_id][kv_length_id] == 0) {
const float candidate = attention_scores[batch_id][kv_length_id];
thread_max = (thread_max < candidate) ? candidate : thread_max;
}
}
if (thread_max != -std::numeric_limits<float>::infinity()) {
// TODO @thomasw21 with more memory we can probably compute a much faster `max-reduce` in parallel O(ln(n)) operations in each memory slot
gpuAtomicMax(&temp_storage[row_id_mem_offset], thread_max);
}
}
__syncthreads();
// Compute exp(elt - max) masked
float exponential[min_kv_length_shard_size_per_thread];
if (batch_id < batch_size) {
float thread_add = 0;
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
if (mask[batch_id][kv_length_id] == 0) {
exponential[kv_length_id - kv_length_start] = std::exp(static_cast<float>(attention_scores[batch_id][kv_length_id]) - temp_storage[row_id_mem_offset]);
thread_add = thread_add + exponential[kv_length_id - kv_length_start];
} else {
exponential[kv_length_id - kv_length_start] = 0.;
}
}
if (thread_add > 0) {
// TODO @thomasw21 with more memory we can probably compute a much faster `sum-reduce` in parallel O(ln(n)) operations in each memory slot
gpuAtomicAdd(&temp_storage[row_id_mem_offset + 1], thread_add);
}
}
__syncthreads();
// Compute softmax
if (batch_id < batch_size) {
// If sum of all exponential is 0, we set the softmax values to 0
if (temp_storage[row_id_mem_offset + 1] == 0.) {
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
result[batch_id][kv_length_id] = 0.;
}
} else {
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
result[batch_id][kv_length_id] = static_cast<attention_scores_scalar>(exponential[kv_length_id - kv_length_start] / temp_storage[row_id_mem_offset + 1]);
}
}
}
}
#define CHECK_CUDA(x) TORCH_CHECK(x.device().is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
#define CHECK_INPUT(x) CHECK_CUDA(x); CHECK_CONTIGUOUS(x)
std::tuple<at::Tensor, std::optional<std::vector<at::Tensor>>, at::Tensor> forward(
const at::Tensor query,
const at::Tensor key,
const at::Tensor value,
const std::optional<std::vector<at::Tensor>> layer_past,
const at::Tensor attention_mask,
const std::optional<at::Tensor> head_mask,
const float inv_norm_factor,
const int num_heads,
const bool use_cache
) {
auto query_layer = query;
auto key_layer = key;
auto value_layer = value;
if (layer_past) {
const auto past_key = (*layer_past).at(0);
const auto past_value = (*layer_past).at(1);
key_layer = at::cat({past_key, key_layer}, 2);
value_layer = at::cat({past_value, value_layer}, 2);
}
std::optional<std::vector<at::Tensor>> present;
if (use_cache) {
present = {key_layer, value_layer};
} else {
present = {};
}
const auto batch_size = query_layer.size(0);
const auto q_length = query_layer.size(2);
const auto attn_head_size = query_layer.size(3);
const auto batch_size_times_num_heads = batch_size * num_heads;
const auto kv_length = key_layer.size(2);
const auto query_view = query_layer.reshape({batch_size_times_num_heads, q_length, attn_head_size});
auto key_view = key_layer.reshape({batch_size_times_num_heads, kv_length, attn_head_size}).transpose(1, 2);
auto value_view = value_layer.reshape({batch_size_times_num_heads, kv_length, attn_head_size});
auto query_scaled = query_view * inv_norm_factor;
auto attention_scores = at::bmm(query_scaled, key_view);
// Computing `optionally_cast_fp16_to_fp32 + masked_fill + softmax + cast_to_intial_dtype`
at::Tensor attention_probs;
if (true) {
// TODO @thomasw21: it's easier to think of attention_scores as 2D tensors
const auto attention_scores_2d = attention_scores.view({batch_size_times_num_heads * q_length, kv_length});
const auto attention_mask_2d = attention_mask.view({batch_size_times_num_heads * q_length, kv_length});
// Custom kernel
attention_probs = at::empty_like(attention_scores_2d);
// Check that inputs and contiguous + cuda tensors
CHECK_INPUT(attention_scores_2d);
CHECK_INPUT(attention_mask_2d);
// TODO @thomas21: change by to this as it's cleaner when pytorch 1.13 comes out
// DISPATCH_CASE_FLOATING_TYPES(attention_scores.scalar_type(), "masked_softmax", [&] {
AT_DISPATCH_FLOATING_TYPES_AND2(at::ScalarType::Half, at::ScalarType::BFloat16, attention_scores.scalar_type(), "masked_softmax", [&] {
/*
* Understanding how GPUs work: https://developer.nvidia.com/blog/cuda-refresher-cuda-programming-model/
* A100 specifications: https://images.nvidia.com/aem-dam/en-zz/Solutions/data-center/nvidia-ampere-architecture-whitepaper.pdf
* - SMs: 108
* - TPCs: 56 (What's that?)
* - Memory size: 40 GB
* - L2 Cache size: 40960 KB (shared across all SMs)
* - L1/Shared memory size: 192 KB (shared across all threads within a SM)
* - Max Threads / SM: 2048
* - Max Thread Blocks / SM: 32
*/
/*
* We should split [batch_size_times_num_heads_block, q_length] in seperate blocks and [batch_size_times_num_heads_block_size, kv_length] a single block
* with multiple threads as we need to `sync_threads` to run exponential sum.
* We maximise the usage of threads within a single block
*/
// TODO @thomasw21 figure out everything warp related:
// - why do they have to be power of 2
// TODO @thomas21 check why everyone is setting 1024 when officially it's 2048
const auto MAX_THREADS_PER_SM = 1024;
// TODO @thomasw21 figure out how to have longer sequences, currently the maximum is `max_kv_length = MAX_THREADS_PER_SM * MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD`
const auto MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD = 4;
// `effective_kv_length = ceil(kv_length / MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD)`
const auto effective_kv_length = (kv_length - 1)/ MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD + 1;
const auto rows_per_block = MAX_THREADS_PER_SM / effective_kv_length;
const auto num_blocks = (batch_size_times_num_heads * q_length - 1) / rows_per_block + 1;
const dim3 gridDim(num_blocks); // Number of blocks that run
const dim3 blockDim(MAX_THREADS_PER_SM); // Number of threads that run per block
const int shared_mem_forward = rows_per_block * 2 * sizeof(float);
// 192 * 2 ** 10
// const auto MAX_L1_MEMORY = 196608;
// const auto MAX_SMs = 108;
// TORCH_CHECK(batch_size_times_num_heads * q_length <= MAX_L1_MEMORY, "Shared memory exceeds 192KB limitation.");
// TORCH_CHECK(gridDim.x * gridDim.y * gridDim.z <= MAX_SMs, "A100s only have 108 SMs. Raising as require blocks is bigger.");
// TORCH_CHECK(blockDim.x * blockDim.y * blockDim.z <= MAX_THREADS_PER_SM, "A100s only have 2048 threads per block. Raising as require requested threads is higher.");
forward_masked_softmax_kernel<scalar_t, MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD><<<gridDim, blockDim, shared_mem_forward>>>(
attention_scores_2d.packed_accessor32<scalar_t, 2, torch::RestrictPtrTraits>(),
attention_mask_2d.packed_accessor32<bool, 2, torch::RestrictPtrTraits>(),
attention_probs.packed_accessor32<scalar_t, 2, torch::RestrictPtrTraits>(),
effective_kv_length,
blockDim,
rows_per_block,
kv_length,
batch_size_times_num_heads * q_length
);
});
attention_probs = attention_probs.view({batch_size_times_num_heads, q_length, kv_length});
} else {
// Pytorch C++ API
auto input_dtype = attention_scores.scalar_type();
if (input_dtype == at::ScalarType::Float) {
attention_scores = attention_scores.to(at::ScalarType::Float);
};
// TODO @thomasw21 Figure out how to get minimum value
auto attn_weights = attention_scores.masked_fill_(attention_mask, -1e34);
attention_probs = attn_weights.softmax(-1, at::ScalarType::Float).to(input_dtype);
}
auto context_layer = attention_probs.bmm(value_view);
// `_merge_heads`
context_layer = context_layer.view({batch_size, num_heads, q_length, attn_head_size});
context_layer = context_layer.permute({0, 2, 1, 3});
context_layer = context_layer.reshape({batch_size, q_length, attn_head_size * num_heads});
return std::make_tuple(context_layer, present, attention_probs);
}
PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
m.def(
"forward",
&forward,
"GPT-Neox attention mechanism forward (CUDA)"
);
}
| 0 |
hf_public_repos/text-generation-inference/server/custom_kernels | hf_public_repos/text-generation-inference/server/custom_kernels/custom_kernels/fused_bloom_attention_cuda.cu | #include <ATen/Dispatch.h>
#include <THC/THCAtomics.cuh>
#include <ATen/ATen.h>
#include <torch/torch.h>
#include <vector>
#include <optional>
/**
* Friendly reminder of how multithreading works in CUDA: https://developer.nvidia.com/blog/even-easier-introduction-cuda
* Check example at https://github.com/thomasw21/LinearTransformers/blob/main/model/attention/fast_weight/fast_weight_cuda.cu
**/
// Available in pytorch main
//#define DISPATCH_CASE_FLOATING_TYPES(...) \
// at::AT_DISPATCH_CASE(at::ScalarType::Double, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::Float, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::Half, __VA_ARGS__) \
// at::AT_DISPATCH_CASE(at::ScalarType::BFloat16, __VA_ARGS__) \
/*
* Forward passes
*/
/**
* cast to fp32 if in fp16 + mask + softmax computation in fp32 + cast back to original dtype
**/
template<typename attention_scores_scalar, int64_t min_kv_length_shard_size_per_thread>
__global__ void forward_masked_softmax_kernel(
const torch::PackedTensorAccessor32<attention_scores_scalar, 2, torch::RestrictPtrTraits> attention_scores, // [B, KV]
const torch::PackedTensorAccessor32<bool, 2, torch::RestrictPtrTraits> mask, // [B, KV]
torch::PackedTensorAccessor32<attention_scores_scalar, 2, torch::RestrictPtrTraits> result, // [B, KV]
const int64_t effective_kv_length,
const dim3 blockDim,
const int64_t rows_per_block,
const int64_t kv_length,
const int64_t batch_size
) {
const auto row_id = threadIdx.x / effective_kv_length;
const auto effective_kv_length_id = threadIdx.x % effective_kv_length;
const auto kv_length_start = effective_kv_length_id * min_kv_length_shard_size_per_thread;
auto kv_length_end_ = (effective_kv_length_id + 1) * min_kv_length_shard_size_per_thread;
kv_length_end_ = (kv_length_end_ > kv_length) ? kv_length : kv_length_end_;
const auto kv_length_end = kv_length_end_;
const auto batch_id = blockIdx.x * rows_per_block + row_id;
// We need 2 float storage for each row, one for max computation, the other for normalizing exponential
extern __shared__ float temp_storage[];
const auto row_id_mem_offset = row_id * 2;
if (effective_kv_length_id == 0) {
temp_storage[row_id_mem_offset] = -std::numeric_limits<float>::infinity();
temp_storage[row_id_mem_offset + 1] = 0;
}
__syncthreads();
// Compute mask and max
if (batch_id < batch_size) {
float thread_max = -std::numeric_limits<float>::infinity();
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
if (mask[batch_id][kv_length_id] == 0) {
const float candidate = attention_scores[batch_id][kv_length_id];
thread_max = (thread_max < candidate) ? candidate : thread_max;
}
}
if (thread_max != -std::numeric_limits<float>::infinity()) {
// TODO @thomasw21 with more memory we can probably compute a much faster `max-reduce` in parallel O(ln(n)) operations in each memory slot
gpuAtomicMax(&temp_storage[row_id_mem_offset], thread_max);
}
}
__syncthreads();
// Compute exp(elt - max) masked
float exponential[min_kv_length_shard_size_per_thread];
if (batch_id < batch_size) {
float thread_add = 0;
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
if (mask[batch_id][kv_length_id] == 0) {
exponential[kv_length_id - kv_length_start] = std::exp(static_cast<float>(attention_scores[batch_id][kv_length_id]) - temp_storage[row_id_mem_offset]);
thread_add = thread_add + exponential[kv_length_id - kv_length_start];
} else {
exponential[kv_length_id - kv_length_start] = 0.;
}
}
if (thread_add > 0) {
// TODO @thomasw21 with more memory we can probably compute a much faster `sum-reduce` in parallel O(ln(n)) operations in each memory slot
gpuAtomicAdd(&temp_storage[row_id_mem_offset + 1], thread_add);
}
}
__syncthreads();
// Compute softmax
if (batch_id < batch_size) {
// If sum of all exponential is 0, we set the softmax values to 0
if (temp_storage[row_id_mem_offset + 1] == 0.) {
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
result[batch_id][kv_length_id] = 0.;
}
} else {
for (int kv_length_id = kv_length_start; kv_length_id < kv_length_end; ++kv_length_id) {
result[batch_id][kv_length_id] = static_cast<attention_scores_scalar>(exponential[kv_length_id - kv_length_start] / temp_storage[row_id_mem_offset + 1]);
}
}
}
}
#define CHECK_CUDA(x) TORCH_CHECK(x.device().is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
#define CHECK_INPUT(x) CHECK_CUDA(x); CHECK_CONTIGUOUS(x)
std::tuple<at::Tensor, std::optional<std::vector<at::Tensor>>, at::Tensor> forward(
const at::Tensor fused_qkv,
const std::optional<std::vector<at::Tensor>> layer_past,
const at::Tensor alibi,
const at::Tensor attention_mask,
const std::optional<at::Tensor> head_mask,
const float beta,
const float inv_norm_factor,
const int num_heads,
const bool use_cache
) {
const auto batch_size = fused_qkv.size(0);
const auto q_length = fused_qkv.size(1);
const auto three_times_hidden_size = fused_qkv.size(2);
const auto head_dim = three_times_hidden_size / (3 * num_heads);
const auto batch_size_times_num_heads = batch_size * num_heads;
// `split_heads`
const auto fused_qkv_view = fused_qkv.view({batch_size, q_length, num_heads, 3 * head_dim});
const auto tensor_list = fused_qkv_view.split(head_dim, -1);
const auto query_layer = tensor_list[0].transpose(1, 2).reshape({batch_size_times_num_heads, q_length, head_dim});
auto key_layer = tensor_list[1].permute({0, 2, 3, 1}).reshape({batch_size_times_num_heads, head_dim, q_length});
auto value_layer = tensor_list[2].transpose(1, 2).reshape({batch_size_times_num_heads, q_length, head_dim});
if (layer_past) {
const auto past_key = (*layer_past).at(0);
const auto past_value = (*layer_past).at(1);
key_layer = at::cat({past_key, key_layer}, 2);
value_layer = at::cat({past_value, value_layer}, 1);
}
std::optional<std::vector<at::Tensor>> present;
if (use_cache) {
present = {key_layer, value_layer};
} else {
present = {};
}
auto attention_scores = alibi.baddbmm(query_layer, key_layer, beta, inv_norm_factor);
// Computing `optionally_cast_fp16_to_fp32 + masked_fill + softmax + cast_to_intial_dtype`
at::Tensor attention_probs;
if (true) {
const auto kv_length = key_layer.size(2);
// TODO @thomasw21: it's easier to think of attention_scores as 2D tensors
const auto attention_scores_2d = attention_scores.view({batch_size_times_num_heads * q_length, kv_length});
const auto attention_mask_2d = attention_mask.view({batch_size_times_num_heads * q_length, kv_length});
// Custom kernel
attention_probs = at::empty_like(attention_scores_2d);
// Check that inputs and contiguous + cuda tensors
CHECK_INPUT(attention_scores_2d);
CHECK_INPUT(attention_mask_2d);
// TODO @thomas21: change by to this as it's cleaner when pytorch 1.13 comes out
// DISPATCH_CASE_FLOATING_TYPES(attention_scores.scalar_type(), "masked_softmax", [&] {
AT_DISPATCH_FLOATING_TYPES_AND2(at::ScalarType::Half, at::ScalarType::BFloat16, attention_scores.scalar_type(), "masked_softmax", [&] {
/*
* Understanding how GPUs work: https://developer.nvidia.com/blog/cuda-refresher-cuda-programming-model/
* A100 specifications: https://images.nvidia.com/aem-dam/en-zz/Solutions/data-center/nvidia-ampere-architecture-whitepaper.pdf
* - SMs: 108
* - TPCs: 56 (What's that?)
* - Memory size: 40 GB
* - L2 Cache size: 40960 KB (shared across all SMs)
* - L1/Shared memory size: 192 KB (shared across all threads within a SM)
* - Max Threads / SM: 2048
* - Max Thread Blocks / SM: 32
*/
/*
* We should split [batch_size_times_num_heads_block, q_length] in seperate blocks and [batch_size_times_num_heads_block_size, kv_length] a single block
* with multiple threads as we need to `sync_threads` to run exponential sum.
* We maximise the usage of threads within a single block
*/
// TODO @thomasw21 figure out everything warp related:
// - why do they have to be power of 2
// TODO @thomas21 check why everyone is setting 1024 when officially it's 2048
const auto MAX_THREADS_PER_SM = 1024;
// TODO @thomasw21 figure out how to have longer sequences, currently the maximum is `max_kv_length = MAX_THREADS_PER_SM * MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD`
const auto MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD = 4;
// `effective_kv_length = ceil(kv_length / MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD)`
const auto effective_kv_length = (kv_length - 1)/ MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD + 1;
const auto rows_per_block = MAX_THREADS_PER_SM / effective_kv_length;
const auto num_blocks = (batch_size_times_num_heads * q_length - 1) / rows_per_block + 1;
const dim3 gridDim(num_blocks); // Number of blocks that run
const dim3 blockDim(MAX_THREADS_PER_SM); // Number of threads that run per block
const int shared_mem_forward = rows_per_block * 2 * sizeof(float);
// 192 * 2 ** 10
// const auto MAX_L1_MEMORY = 196608;
// const auto MAX_SMs = 108;
// TORCH_CHECK(batch_size_times_num_heads * q_length <= MAX_L1_MEMORY, "Shared memory exceeds 192KB limitation.");
// TORCH_CHECK(gridDim.x * gridDim.y * gridDim.z <= MAX_SMs, "A100s only have 108 SMs. Raising as require blocks is bigger.");
// TORCH_CHECK(blockDim.x * blockDim.y * blockDim.z <= MAX_THREADS_PER_SM, "A100s only have 2048 threads per block. Raising as require requested threads is higher.");
forward_masked_softmax_kernel<scalar_t, MIN_KV_LENGTH_SHARD_SIZE_PER_THREAD><<<gridDim, blockDim, shared_mem_forward>>>(
attention_scores_2d.packed_accessor32<scalar_t, 2, torch::RestrictPtrTraits>(),
attention_mask_2d.packed_accessor32<bool, 2, torch::RestrictPtrTraits>(),
attention_probs.packed_accessor32<scalar_t, 2, torch::RestrictPtrTraits>(),
effective_kv_length,
blockDim,
rows_per_block,
kv_length,
batch_size_times_num_heads * q_length
);
});
attention_probs = attention_probs.view({batch_size_times_num_heads, q_length, kv_length});
} else {
// Pytorch C++ API
auto input_dtype = attention_scores.scalar_type();
if (input_dtype == at::ScalarType::Float) {
attention_scores = attention_scores.to(at::ScalarType::Float);
};
// TODO @thomasw21 Figure out how to get minimum value
auto attn_weights = attention_scores.masked_fill_(attention_mask, -1e34);
attention_probs = attn_weights.softmax(-1, at::ScalarType::Float).to(input_dtype);
}
auto context_layer = attention_probs.bmm(value_layer);
// `_merge_heads`
context_layer = context_layer.view({batch_size, num_heads, q_length, head_dim});
context_layer = context_layer.permute({0, 2, 1, 3});
context_layer = context_layer.reshape({batch_size, q_length, three_times_hidden_size / 3});
return std::make_tuple(context_layer, present, attention_probs);
}
PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
m.def(
"forward",
&forward,
"Bloom attention mechanism forward (CUDA)"
);
} | 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/exllama_kernels/setup.py | from setuptools import setup
from torch.utils.cpp_extension import BuildExtension, CUDAExtension
setup(
name="exllama_kernels",
ext_modules=[
CUDAExtension(
name="exllama_kernels",
sources=[
"exllama_kernels/exllama_ext.cpp",
"exllama_kernels/cuda_buffers.cu",
"exllama_kernels/cuda_func/column_remap.cu",
"exllama_kernels/cuda_func/q4_matmul.cu",
"exllama_kernels/cuda_func/q4_matrix.cu",
],
)
],
cmdclass={"build_ext": BuildExtension},
)
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_buffers.cu | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#define _cuda_buffers_cu
#include "cuda_buffers.cuh"
CudaBuffers* g_buffers[CUDA_MAX_DEVICES] = {NULL};
// __constant__ half2 q4_table[16][256];
// half2 q4_table_host[16][256];
// bool q4_table_init = false;
CudaBuffers::CudaBuffers
(
int _device,
half* _temp_state,
half* _temp_dq
) :
device(_device),
temp_state(_temp_state),
temp_dq(_temp_dq)
{
cudaSetDevice(_device);
cudaStreamCreate(&alt_stream_1);
cudaStreamCreate(&alt_stream_2);
cudaStreamCreate(&alt_stream_3);
cudaEventCreate(&alt_stream_1_done);
cudaEventCreate(&alt_stream_2_done);
cudaEventCreate(&alt_stream_3_done);
}
CudaBuffers::~CudaBuffers()
{
cudaStreamDestroy(alt_stream_1);
cudaStreamDestroy(alt_stream_2);
cudaStreamDestroy(alt_stream_3);
cudaEventDestroy(alt_stream_1_done);
cudaEventDestroy(alt_stream_2_done);
cudaEventDestroy(alt_stream_3_done);
}
CudaBuffers* get_buffers(const int device_index)
{
return g_buffers[device_index];
}
void prepare_buffers_cuda
(
int _device,
half* _temp_state,
half* _temp_dq
)
{
CudaBuffers* buffers = new CudaBuffers
(
_device,
_temp_state,
_temp_dq
);
g_buffers[_device] = buffers;
}
void cleanup_buffers_cuda()
{
for (int i = 0; i < CUDA_MAX_DEVICES; i++)
{
if (!g_buffers[i]) continue;
delete g_buffers[i];
g_buffers[i] = NULL;
}
}
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_buffers.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _cuda_buffers_cuh
#define _cuda_buffers_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
#include <cstdio>
const int CUDA_MAX_DEVICES = 16;
// #ifndef _cuda_buffers_cu
// extern __constant__ half2 q4_table[16][256];
// #endif
class CudaBuffers
{
public:
int device;
half* temp_state; // [max_hidden_rows * intermediate_size]
half* temp_dq; // size of largest quant tensor * 8
cudaStream_t alt_stream_1;
cudaStream_t alt_stream_2;
cudaStream_t alt_stream_3;
cudaEvent_t alt_stream_1_done;
cudaEvent_t alt_stream_2_done;
cudaEvent_t alt_stream_3_done;
CudaBuffers
(
int _device,
half* _temp_state,
half* _temp_dq
);
~CudaBuffers();
};
CudaBuffers* get_buffers(const int device_index);
void prepare_buffers_cuda
(
int _device,
half* _temp_state,
half* _temp_dq
);
void cleanup_buffers_cuda();
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_compat.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _cuda_compat_cuh
#define _cuda_compat_cuh
// atomicAdd for half types, to support CC < 7.x
__device__ __forceinline__ void atomicAdd_half(half* address, half val)
{
unsigned int * address_as_ui = (unsigned int *) ((char *)address - ((size_t)address & 2));
unsigned int old = *address_as_ui;
unsigned int assumed;
do
{
assumed = old;
__half_raw hsum;
hsum.x = (size_t)address & 2 ? (old >> 16) : (old & 0xffff);
half tmpres = __hadd(hsum, val);
hsum = __half_raw(tmpres);
old = (size_t)address & 2 ? (old & 0xffff) | (hsum.x << 16) : (old & 0xffff0000) | hsum.x;
old = atomicCAS(address_as_ui, assumed, old);
}
while (assumed != old);
}
// atomicAdd for half2 types
__device__ __forceinline__ void atomicAdd_half2(half2* address, half2 val)
{
unsigned int* address_as_ui = (unsigned int*)address;
unsigned int old = *address_as_ui;
unsigned int assumed;
do
{
assumed = old;
half2 old_val = *((half2*)&old);
half2 new_val = __hadd2(old_val, val);
old = atomicCAS(address_as_ui, assumed, *((unsigned int*)&new_val));
}
while (assumed != old);
}
//
#if defined(__CUDA_ARCH__)
#if __CUDA_ARCH__ < 700
__device__ __forceinline__ void atomicAdd(half* address, half val) { atomicAdd_half(address, val); }
#if __CUDA_ARCH__ < 600
__device__ __forceinline__ void atomicAdd(half2* address, half2 val) { atomicAdd_half2(address, val); }
#endif
#endif
#endif
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/exllama_ext.cpp | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#include <torch/extension.h>
#include <c10/cuda/CUDAGuard.h>
#include <ATen/cuda/CUDAContext.h>
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
#include <cstdio>
#include "util.cuh"
#include "tuning.h"
#include "cuda_buffers.cuh"
#include "cuda_func/q4_matrix.cuh"
#include "cuda_func/q4_matmul.cuh"
#include "cuda_func/column_remap.cuh"
// Check CUDA return code. We don't want to include Torch headers in the .cu files because parsing them adds almost a
// minute to the compile time on a 12900K. Also passing exceptions back to Python is super tricky, so in place of
// exceptions, CUDA functions return with a cudaError_t which we can parse and dump to the console.
void check_cuda(cudaError_t ret)
{
switch (ret)
{
case cudaSuccess:
break;
case cudaUnspecified:
printf(" **** Unspecified error\n");
TORCH_CHECK(false, "CUDA error");
break;
default:
printf(" **** CUDA error\n"); \
printf(" **** %s\n", cudaGetErrorString(ret)); \
TORCH_CHECK(false, "CUDA error"); \
break;
}
}
// Some decluttering macros
#define STRINGIFY_(__x) #__x
#define STRINGIFY(__x) STRINGIFY_(__x)
#define TORCH_CHECK_DTYPE(__x, __dtype) TORCH_CHECK((__x).dtype() == torch::__dtype, #__x " is incorrect datatype, must be " #__dtype)
#define TORCH_CHECK_DTYPE_OPT(__x, __dtype) TORCH_CHECK((__x).device().is_meta() || (__x).dtype() == torch::__dtype, #__x " is incorrect datatype, must be " #__dtype)
#define TORCH_CHECK_SHAPES(__x, __dim_x, __y, __dim_y, __scale_y) TORCH_CHECK((__x).size(__dim_x) == (__y).size(__dim_y) * __scale_y, #__x " and " #__y " have incompatible shapes")
#define TORCH_CHECK_SHAPES_OPT(__x, __dim_x, __y, __dim_y, __scale_y) TORCH_CHECK((__x).device().is_meta() || (__x).size(__dim_x) == (__y).size(__dim_y) * __scale_y, #__x " and " #__y " have incompatible shapes")
#define TORCH_CHECK_SHAPE_MOD(__x, __dim_x, __mod) TORCH_CHECK((__x).size(__dim_x) % __mod == 0, #__x ".shape[" STRINGIFY(__dim_x) "] must be a multiple of " STRINGIFY(__mod))
#define TORCH_CHECK_DEVICE_INDEX(__index) \
do { \
TORCH_CHECK(__index >= 0, "no device index"); \
TORCH_CHECK(__index < CUDA_MAX_DEVICES, "invalid device index"); \
} while(0)
#define TORCH_CHECK_QUANT(__w, __w_scales, __w_zeros, __seq_g_idx, __x_map) \
do { \
TORCH_CHECK_DTYPE(__w, kInt); \
TORCH_CHECK_DTYPE(__w_scales, kHalf); \
TORCH_CHECK_DTYPE(__w_zeros, kInt); \
TORCH_CHECK_DTYPE_OPT(__seq_g_idx, kShort); \
TORCH_CHECK_DTYPE_OPT(__x_map, kInt); \
TORCH_CHECK_SHAPES_OPT(__seq_g_idx, 0, __w, 0, 2 * 8); \
TORCH_CHECK_SHAPES_OPT(__x_map, 0, __w, 0, 8); \
} while(0)
int get_groupsize(torch::Tensor w, torch::Tensor w_zeros)
{
int groupsize = w.size(0) * 8 / w_zeros.size(0);
TORCH_CHECK(groupsize * w_zeros.size(0) == w.size(0) * 8, "w.shape[-2] must be a multiple of zeros.shape[-2]")
return groupsize;
}
// Tuning parameters
ExLlamaTuning tuningParams;
void set_tuning_params
(
int matmul_recons_thd,
bool matmul_fused_remap,
bool matmul_no_half2
)
{
tuningParams.matmul_recons_thd = matmul_recons_thd;
tuningParams.matmul_fused_remap = matmul_fused_remap;
tuningParams.matmul_no_half2 = matmul_no_half2;
}
// Release all unmanaged objects allocated by the extension
void cleanup()
{
cleanup_buffers_cuda();
g_q4_free_matrices();
}
// Prepare buffers for forward pass
void prepare_buffers
(
torch::Device device,
torch::Tensor temp_state,
torch::Tensor temp_dq
)
{
int device_index = device.index();
TORCH_CHECK_DEVICE_INDEX(device_index);
const at::cuda::OptionalCUDAGuard device_guard(device);
prepare_buffers_cuda
(
device_index,
(half*) temp_state.data_ptr(),
(half*) temp_dq.data_ptr()
);
}
// Create Q4Matrix, return handle
uintptr_t make_q4
(
torch::Tensor qweight,
torch::Tensor qzeros,
torch::Tensor scales,
torch::Tensor g_idx,
int device
)
{
TORCH_CHECK_DTYPE(qweight, kInt);
TORCH_CHECK_DTYPE(qzeros, kInt);
TORCH_CHECK_DTYPE(scales, kHalf);
TORCH_CHECK_DTYPE_OPT(g_idx, kInt);
TORCH_CHECK_SHAPES(qweight, 1, qzeros, 1, 8);
TORCH_CHECK_SHAPES(scales, 1, qweight, 1, 1);
TORCH_CHECK_SHAPES(qzeros, 0, scales, 0, 1);
int width = qweight.size(1);
int height = qweight.size(0) * 8;
int groups = qzeros.size(0);
Q4Matrix* m = new Q4Matrix
(
height,
width,
groups,
(uint32_t*) qweight.data_ptr(),
(uint32_t*) qzeros.data_ptr(),
(half*) scales.data_ptr(),
g_idx.device().is_meta() ? NULL : (uint32_t*) g_idx.data_ptr(),
device
);
g_q4_keep_matrix(m);
return reinterpret_cast<uintptr_t> (m);
}
// Matmul half @ quant -> half
void q4_matmul
(
torch::Tensor x,
uintptr_t w,
torch::Tensor out
)
{
Q4Matrix* wm = reinterpret_cast<Q4Matrix*> (w);
TORCH_CHECK_DTYPE(x, kHalf);
TORCH_CHECK_DTYPE(out, kHalf);
TORCH_CHECK_SHAPES(x, 0, out, 0, 1);
TORCH_CHECK(wm->height == x.size(-1), "x and w have incompatible shapes")
const at::cuda::OptionalCUDAGuard device_guard(device_of(x));
int x_height = x.size(0);
if (tuningParams.matmul_recons_thd == 0 || x_height < tuningParams.matmul_recons_thd)
{
q4_matmul_cuda
(
&tuningParams,
(half*) x.data_ptr(),
x_height,
wm,
(half*) out.data_ptr()
);
}
else
{
q4_matmul_recons_cuda
(
&tuningParams,
(half*) x.data_ptr(),
x_height,
wm,
(half*) out.data_ptr(),
at::cuda::getCurrentCUDABlasHandle()
);
}
}
// Remap columns in half tensor
void column_remap
(
torch::Tensor x,
torch::Tensor x_new,
torch::Tensor x_map
)
{
TORCH_CHECK_DTYPE(x, kHalf);
TORCH_CHECK_DTYPE(x_new, kHalf);
TORCH_CHECK_DTYPE(x_map, kInt);
TORCH_CHECK_SHAPES(x_map, 0, x, 1, 1);
int height = x.size(0);
int width = x.size(1);
const at::cuda::OptionalCUDAGuard device_guard(device_of(x));
column_remap_cuda
(
(half*) x.data_ptr(),
(half*) x_new.data_ptr(),
height,
width,
(uint32_t*) x_map.data_ptr()
);
}
PYBIND11_MODULE(TORCH_EXTENSION_NAME, m)
{
m.def("set_tuning_params", &set_tuning_params, "set_tuning_params");
m.def("prepare_buffers", &prepare_buffers, "prepare_buffers");
m.def("cleanup", &cleanup, "cleanup");
m.def("make_q4", &make_q4, "make_q4");
m.def("q4_matmul", &q4_matmul, "q4_matmul");
}
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/matrix.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _matrix_cuh
#define _matrix_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
class MatrixView_half
{
public:
const half* data;
const int height;
const int width;
__device__ __forceinline__ MatrixView_half(const half* data, const int height, const int width)
: data(data), height(height), width(width)
{ }
__device__ __forceinline__ half item(int row, int column) const { return data[row * width + column]; }
__device__ __forceinline__ half2 item_half2(int row, int column) const { return ((half2*)data)[(row * width + column) / 2]; }
__device__ __forceinline__ half2 item_half2half2(int row, int column) const { return __half2half2(data[row * width + column]); }
__device__ __forceinline__ const half* item_ptr(int row, int column) const { return &data[row * width + column]; }
};
class MatrixView_half_rw
{
public:
half* data;
const int height;
const int width;
__device__ __forceinline__ MatrixView_half_rw(half* data, const int height, const int width)
: data(data), height(height), width(width)
{ }
__device__ __forceinline__ half item(int row, int column) const { return data[row * width + column]; }
__device__ __forceinline__ half2 item_half2(int row, int column) const { return ((half2*)data)[(row * width + column) / 2]; }
__device__ __forceinline__ half* item_ptr(int row, int column) { return &data[row * width + column]; }
__device__ __forceinline__ void set(int row, int column, half value) { data[row * width + column] = value; }
__device__ __forceinline__ void set_half2(int row, int column, half2 value) { ((half2*)data)[(row * width + column) / 2] = value; }
};
class MatrixView_q4_row
{
public:
const uint32_t* data;
const int height;
const int width;
__device__ __forceinline__ MatrixView_q4_row(const uint32_t* data, const int height, const int width)
: data(data), height(height), width(width)
{ }
__device__ __forceinline__ int item(int row, int column) const
{
int shift = (column & 0x07) * 4;
return (data[row * width / 8 + column / 8] >> shift) & 0x0f;
}
};
class MatrixView_q4_column
{
public:
const uint32_t* data;
const int height;
const int width;
__device__ __forceinline__ MatrixView_q4_column(const uint32_t* data, const int height, const int width)
: data(data), height(height), width(width)
{ }
__device__ __forceinline__ int item(int row, int column) const
{
int shift = (row & 0x07) * 4;
return (data[row / 8 * width + column] >> shift) & 0x0f;
}
__device__ __forceinline__ uint32_t item_uint32_t(int row, int column) { return data[row / 8 * width + column]; }
__device__ __forceinline__ const uint32_t* item_uint32_ptr(int row, int column) { return &data[row / 8 * width + column]; }
};
// TODO: Rewrite all these dot product functions using functors or something, move to q4_matmul.cu
// Accumulated dot product of 8-element row vectors in h and quantized column vectors in v, constant zero/scale
__device__ __forceinline__ half2 dot_product_8
(
const half2 acc,
MatrixView_half& h_,
const int h_row,
const int h_column, // divisible by 8
MatrixView_q4_column& v_,
const int v_row, // divisible by 8
const int v_column,
const half2 v_scale_2,
const uint32_t v_zero, // + 1 (!!)
const int count
)
{
const half2* h_ptr = (const half2*) h_.item_ptr(h_row, h_column);
const uint32_t* v_ptr = (const uint32_t*) v_.item_uint32_ptr(v_row, v_column);
half2 result = acc;
for (int i = 0; i < count; i++)
{
uint32_t v_read = *v_ptr; v_ptr += v_.width;
half v_0 = __int2half_rn((int)((v_read ) & 0x0f) - v_zero);
half v_1 = __int2half_rn((int)((v_read >> 4) & 0x0f) - v_zero);
half v_2 = __int2half_rn((int)((v_read >> 8) & 0x0f) - v_zero);
half v_3 = __int2half_rn((int)((v_read >> 12) & 0x0f) - v_zero);
half v_4 = __int2half_rn((int)((v_read >> 16) & 0x0f) - v_zero);
half v_5 = __int2half_rn((int)((v_read >> 20) & 0x0f) - v_zero);
half v_6 = __int2half_rn((int)((v_read >> 24) & 0x0f) - v_zero);
half v_7 = __int2half_rn((int)((v_read >> 28) ) - v_zero);
half2 v_01 = __halves2half2(v_0, v_1);
half2 v_23 = __halves2half2(v_2, v_3);
half2 v_45 = __halves2half2(v_4, v_5);
half2 v_67 = __halves2half2(v_6, v_7);
// half2 v_01 = q4_table[v_zero - 1][(v_read ) & 0xff]; // (constant memory is too slow apparently)
// half2 v_23 = q4_table[v_zero - 1][(v_read >> 8) & 0xff];
// half2 v_45 = q4_table[v_zero - 1][(v_read >> 16) & 0xff];
// half2 v_67 = q4_table[v_zero - 1][(v_read >> 24) ];
half2 tmp = __hmul2(*h_ptr++, v_01);
tmp = __hfma2(*h_ptr++, v_23, tmp);
tmp = __hfma2(*h_ptr++, v_45, tmp);
tmp = __hfma2(*h_ptr++, v_67, tmp);
result = __hfma2(v_scale_2, tmp, result);
}
return result;
}
__device__ __forceinline__ half dot_product_8_h
(
const half acc,
MatrixView_half& h_,
const int h_row,
const int h_column, // divisible by 8
MatrixView_q4_column& v_,
const int v_row, // divisible by 8
const int v_column,
const half v_scale,
const uint32_t v_zero, // + 1 (!!)
const int count
)
{
const half* h_ptr = h_.item_ptr(h_row, h_column);
const uint32_t* v_ptr = (const uint32_t*) v_.item_uint32_ptr(v_row, v_column);
half result = acc;
for (int i = 0; i < count; i++)
{
uint32_t v_read = *v_ptr; v_ptr += v_.width;
half v_0 = __int2half_rn((int)((v_read ) & 0x0f) - v_zero);
half v_1 = __int2half_rn((int)((v_read >> 4) & 0x0f) - v_zero);
half v_2 = __int2half_rn((int)((v_read >> 8) & 0x0f) - v_zero);
half v_3 = __int2half_rn((int)((v_read >> 12) & 0x0f) - v_zero);
half v_4 = __int2half_rn((int)((v_read >> 16) & 0x0f) - v_zero);
half v_5 = __int2half_rn((int)((v_read >> 20) & 0x0f) - v_zero);
half v_6 = __int2half_rn((int)((v_read >> 24) & 0x0f) - v_zero);
half v_7 = __int2half_rn((int)((v_read >> 28) ) - v_zero);
half tmp = __hmul(*h_ptr++, v_0);
tmp = __hfma(*h_ptr++, v_1, tmp);
tmp = __hfma(*h_ptr++, v_2, tmp);
tmp = __hfma(*h_ptr++, v_3, tmp);
tmp = __hfma(*h_ptr++, v_4, tmp);
tmp = __hfma(*h_ptr++, v_5, tmp);
tmp = __hfma(*h_ptr++, v_6, tmp);
tmp = __hfma(*h_ptr++, v_7, tmp);
result = __hfma(v_scale, tmp, result);
}
return result;
}
// Accumulated dot product of 8-element row vectors in h and quantized column vectors in v, constant zero/scale, with x_map
__device__ __forceinline__ half2 dot_product_8_x_map
(
const half2 acc,
MatrixView_half& h_,
const int h_row,
const int h_column, // divisible by 8
MatrixView_q4_column& v_,
const int v_row, // divisible by 8
const int v_column,
const half2 v_scale_2,
const uint32_t v_zero, // + 1 (!!)
const int count,
const uint32_t* x_map
)
{
const half* h_ptr = h_.item_ptr(h_row, 0);
const uint32_t* x_map_ptr = x_map + h_column;
const uint32_t* v_ptr = (const uint32_t*) v_.item_uint32_ptr(v_row, v_column);
half2 result = acc;
for (int i = 0; i < count; i++)
{
uint32_t v_read = *v_ptr; v_ptr += v_.width;
half v_0 = __int2half_rn((int)((v_read ) & 0x0f) - v_zero);
half v_1 = __int2half_rn((int)((v_read >> 4) & 0x0f) - v_zero);
half v_2 = __int2half_rn((int)((v_read >> 8) & 0x0f) - v_zero);
half v_3 = __int2half_rn((int)((v_read >> 12) & 0x0f) - v_zero);
half v_4 = __int2half_rn((int)((v_read >> 16) & 0x0f) - v_zero);
half v_5 = __int2half_rn((int)((v_read >> 20) & 0x0f) - v_zero);
half v_6 = __int2half_rn((int)((v_read >> 24) & 0x0f) - v_zero);
half v_7 = __int2half_rn((int)((v_read >> 28) ) - v_zero);
half2 v_01 = __halves2half2(v_0, v_1);
half2 v_23 = __halves2half2(v_2, v_3);
half2 v_45 = __halves2half2(v_4, v_5);
half2 v_67 = __halves2half2(v_6, v_7);
half h_0 = h_ptr[*x_map_ptr++];
half h_1 = h_ptr[*x_map_ptr++];
half h_2 = h_ptr[*x_map_ptr++];
half h_3 = h_ptr[*x_map_ptr++];
half h_4 = h_ptr[*x_map_ptr++];
half h_5 = h_ptr[*x_map_ptr++];
half h_6 = h_ptr[*x_map_ptr++];
half h_7 = h_ptr[*x_map_ptr++];
half2 h_01 = __halves2half2(h_0, h_1);
half2 h_23 = __halves2half2(h_2, h_3);
half2 h_45 = __halves2half2(h_4, h_5);
half2 h_67 = __halves2half2(h_6, h_7);
half2 tmp = __hmul2(h_01, v_01);
tmp = __hfma2(h_23, v_23, tmp);
tmp = __hfma2(h_45, v_45, tmp);
tmp = __hfma2(h_67, v_67, tmp);
result = __hfma2(v_scale_2, tmp, result);
}
return result;
}
__device__ __forceinline__ half dot_product_8_x_map_h
(
const half acc,
MatrixView_half& h_,
const int h_row,
const int h_column, // divisible by 8
MatrixView_q4_column& v_,
const int v_row, // divisible by 8
const int v_column,
const half v_scale,
const uint32_t v_zero, // + 1 (!!)
const int count,
const uint32_t* x_map
)
{
const half* h_ptr = h_.item_ptr(h_row, 0);
const uint32_t* x_map_ptr = x_map + h_column;
const uint32_t* v_ptr = (const uint32_t*) v_.item_uint32_ptr(v_row, v_column);
half result = acc;
for (int i = 0; i < count; i++)
{
uint32_t v_read = *v_ptr; v_ptr += v_.width;
half v_0 = __int2half_rn((int)((v_read ) & 0x0f) - v_zero);
half v_1 = __int2half_rn((int)((v_read >> 4) & 0x0f) - v_zero);
half v_2 = __int2half_rn((int)((v_read >> 8) & 0x0f) - v_zero);
half v_3 = __int2half_rn((int)((v_read >> 12) & 0x0f) - v_zero);
half v_4 = __int2half_rn((int)((v_read >> 16) & 0x0f) - v_zero);
half v_5 = __int2half_rn((int)((v_read >> 20) & 0x0f) - v_zero);
half v_6 = __int2half_rn((int)((v_read >> 24) & 0x0f) - v_zero);
half v_7 = __int2half_rn((int)((v_read >> 28) ) - v_zero);
half tmp = __hmul(h_ptr[*x_map_ptr++], v_0);
tmp = __hfma(h_ptr[*x_map_ptr++], v_1, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_2, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_3, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_4, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_5, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_6, tmp);
tmp = __hfma(h_ptr[*x_map_ptr++], v_7, tmp);
result = __hfma(v_scale, tmp, result);
}
return result;
}
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/tuning.h | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _tuning_h
#define _tuning_h
struct ExLlamaTuning
{
int matmul_recons_thd;
bool matmul_fused_remap;
bool matmul_no_half2;
};
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/util.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _util_cuh
#define _util_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
#include <cstdio>
#define cudaUnspecified cudaErrorApiFailureBase
// React to failure on return code != cudaSuccess
#define _cuda_check(fn) \
do { \
{_cuda_err = fn;} \
if (_cuda_err != cudaSuccess) goto _cuda_fail; \
} while(false)
// React to failure on return code == 0
#define _alloc_check(fn) \
do { \
if (!(fn)) { _cuda_err = cudaUnspecified; goto _cuda_fail; } \
else _cuda_err = cudaSuccess; \
} while(false)
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/column_remap.cu | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#include "column_remap.cuh"
#include "../util.cuh"
const int SHUF_BLOCKSIZE_X = 256;
const int SHUF_BLOCKSIZE_Y = 16;
__global__ void column_remap_kernel
(
const half* __restrict__ x,
half* __restrict__ x_new,
const int x_width,
const int x_height,
const uint32_t* x_map
)
{
int x_column = SHUF_BLOCKSIZE_X * blockIdx.x + threadIdx.x;
int x_row = SHUF_BLOCKSIZE_Y * blockIdx.y;
int x_stride = x_width;
int x_idx = x_row * x_stride + x_column;
int x_row_end = min(x_row + SHUF_BLOCKSIZE_Y, x_height);
int x_idx_end = x_row_end * x_stride + x_column;
int s_column = x_map[x_column];
int s_idx = x_row * x_stride + s_column;
while (x_idx < x_idx_end)
{
x_new[x_idx] = x[s_idx];
x_idx += x_stride;
s_idx += x_stride;
}
}
// Remap columns in x to correspond to sequential group index before matmul
//
// perform x -> seq_x such that seq_x @ seq_w == x @ w
void column_remap_cuda
(
const half* x,
half* x_new,
const int x_height,
const int x_width,
const uint32_t* x_map
)
{
dim3 threads(SHUF_BLOCKSIZE_X, 1, 1);
dim3 blocks
(
(x_width + SHUF_BLOCKSIZE_X - 1) / SHUF_BLOCKSIZE_X,
(x_height + SHUF_BLOCKSIZE_Y - 1) / SHUF_BLOCKSIZE_Y,
1
);
column_remap_kernel<<<blocks, threads>>>(x, x_new, x_width, x_height, x_map);
}
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/column_remap.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _column_remap_cuh
#define _column_remap_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
void column_remap_cuda
(
const half* x,
half* x_new,
const int x_height,
const int x_width,
const uint32_t* x_map
);
#endif | 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/q4_matmul.cu | #include "q4_matmul.cuh"
#include "column_remap.cuh"
#include "../util.cuh"
#include "../matrix.cuh"
#include "../cuda_compat.cuh"
#include "../cuda_buffers.cuh"
const int THREADS_X = 32; // Block size and thread count along columns in w and out
const int THREADS_Y = 1; // Block size and thread count along rows in x and out
typedef void (*fp_q4_matmul_kernel)
(
const half*,
const uint32_t*,
half*,
const half*,
const uint32_t*,
const int,
const int,
const int,
const int,
const int,
const uint32_t*,
bool
);
template<bool use_half2, bool use_groupsize, bool use_x_map>
__global__ void q4_matmul_kernel
(
const half* __restrict__ x,
const uint32_t* __restrict__ w,
half* __restrict__ out,
const half* __restrict__ w_scales,
const uint32_t* __restrict__ w_zeros,
const int height,
const int dim,
const int width,
const int groupsize,
const int block_size_z,
const uint32_t* __restrict__ x_map,
bool no_zero
)
{
// Start of block
int x_column = block_size_z * blockIdx.z;
int x_column_end = min(dim, block_size_z * (blockIdx.z + 1));
int w_column = THREADS_X * blockIdx.x + threadIdx.x;
int x_row = THREADS_Y * blockIdx.y + threadIdx.y;
int iterations = (x_column_end - x_column) / 8;
// Views
MatrixView_half x_(x, height, dim);
MatrixView_half w_scales_(w_scales, dim / groupsize, width);
MatrixView_q4_row w_zeros_(w_zeros, dim / groupsize, width);
MatrixView_q4_column w_(w, dim, width);
MatrixView_half_rw out_(out, height, width);
// Zero output
if (!no_zero && blockIdx.z == 0 && (threadIdx.x & 1) == 0)
{
*((uint32_t*) out_.item_ptr(x_row, w_column)) = 0;
__syncthreads();
}
// Loop over part of x row (and w column)
half2 acc = {};
half acc_h = {};
if constexpr (use_groupsize)
{
// For quant matrices where groupsize divides BLOCK_SIZE_Z we always start on a group boundary, so this
// could be slightly faster
for (int k = x_column, group = x_column / groupsize; k < x_column + iterations * 8; group++, k += groupsize)
{
if constexpr (use_half2)
{
half2 w_scale = w_scales_.item_half2half2(group, w_column);
uint32_t w_zero = w_zeros_.item(group, w_column) + 1;
if constexpr (use_x_map) acc = dot_product_8_x_map(acc, x_, x_row, k, w_, k, w_column, w_scale, w_zero, groupsize / 8, x_map);
else acc = dot_product_8 (acc, x_, x_row, k, w_, k, w_column, w_scale, w_zero, groupsize / 8);
}
else
{
half w_scale = w_scales_.item(group, w_column);
uint32_t w_zero = w_zeros_.item(group, w_column) + 1;
if constexpr (use_x_map) acc_h = dot_product_8_x_map_h(acc_h, x_, x_row, k, w_, k, w_column, w_scale, w_zero, groupsize / 8, x_map);
else acc_h = dot_product_8_h (acc_h, x_, x_row, k, w_, k, w_column, w_scale, w_zero, groupsize / 8);
}
}
}
else
{
// Otherwise assume groupsize is a multiple of 8, do 8 columns per iteration and trust the cache
for (int k = x_column; k < x_column + iterations * 8; k += 8)
{
if constexpr (use_half2)
{
int group = k / groupsize;
half2 w_scale = w_scales_.item_half2half2(group, w_column);
uint32_t w_zero = w_zeros_.item(group, w_column) + 1;
if constexpr (use_x_map) acc = dot_product_8_x_map(acc, x_, x_row, k, w_, k, w_column, w_scale, w_zero, 1, x_map);
else acc = dot_product_8 (acc, x_, x_row, k, w_, k, w_column, w_scale, w_zero, 1);
}
else
{
int group = k / groupsize;
half w_scale = w_scales_.item(group, w_column);
uint32_t w_zero = w_zeros_.item(group, w_column) + 1;
if constexpr (use_x_map) acc_h = dot_product_8_x_map_h(acc_h, x_, x_row, k, w_, k, w_column, w_scale, w_zero, 1, x_map);
else acc_h = dot_product_8_h (acc_h, x_, x_row, k, w_, k, w_column, w_scale, w_zero, 1);
}
}
}
// Add to block result
if constexpr (use_half2)
{
half result = __hadd(acc.x, acc.y);
atomicAdd(out_.item_ptr(x_row, w_column), result);
}
else
{
atomicAdd(out_.item_ptr(x_row, w_column), acc_h);
}
}
fp_q4_matmul_kernel q4_matmul_kernel_pick(ExLlamaTuning* tuningParams, int block_size_z, int groupsize, uint32_t* x_map)
{
// <bool use_half2, bool use_groupsize, bool use_x_map>
if (tuningParams->matmul_no_half2) {
if (block_size_z % groupsize == 0) {
if (x_map) return q4_matmul_kernel<false, true, true >;
else return q4_matmul_kernel<false, true, false>;
} else {
if (x_map) return q4_matmul_kernel<false, false, true >;
else return q4_matmul_kernel<false, false, false>;
}
} else {
if (block_size_z % groupsize == 0)
{
if (x_map) return q4_matmul_kernel<true, true, true >;
else return q4_matmul_kernel<true, true, false>;
} else {
if (x_map) return q4_matmul_kernel<true, false, true >;
else return q4_matmul_kernel<true, false, false>;
}
}
};
// Compute y = x @ w
void q4_matmul_cuda
(
ExLlamaTuning* tuningParams,
const half* x,
const int x_height,
const Q4Matrix* w,
half* out,
bool no_zero,
cudaStream_t alt_stream
)
{
int height = x_height;
int dim = w->height;
int width = w->width;
cudaSetDevice(w->device);
uint32_t* x_map = w->cuda_x_map;
const half* x_mapped = x;
if (x_map && !tuningParams->matmul_fused_remap && !alt_stream)
{
CudaBuffers* buffers = get_buffers(w->device);
column_remap_cuda(x, buffers->temp_state, x_height, dim, w->cuda_x_map);
x_mapped = buffers->temp_state;
x_map = NULL;
}
int block_size_z;
if (w->width == 4096) block_size_z = 384; // 7B
else if (w->width == 11008) block_size_z = 256;
else if (w->width == 5120) block_size_z = 384; // 13B
else if (w->width == 13824) block_size_z = 256;
else if (w->width == 6656) block_size_z = 256; // 33B
else if (w->width == 17920) block_size_z = 128;
else block_size_z = 256;
//if (!no_zero) cudaMemsetAsync(out, 0, x_height * w->width * sizeof(half));
dim3 threads(THREADS_X, THREADS_Y, 1);
dim3 blocks
(
(width + threads.x - 1) / threads.x,
(height + threads.y - 1) / threads.y,
(dim + block_size_z - 1) / block_size_z
);
fp_q4_matmul_kernel kernel = q4_matmul_kernel_pick(tuningParams, block_size_z, w->groupsize, x_map);
kernel<<<blocks, threads, 0, alt_stream>>> (x_mapped, w->cuda_qweight, out, w->cuda_scales, w->cuda_qzeros, height, dim, width, w->groupsize, block_size_z, x_map, no_zero);
}
void q4_matmul_recons_cuda
(
ExLlamaTuning* tuningParams,
const half* x,
const int x_height,
Q4Matrix* w,
half* out,
const cublasHandle_t handle,
bool no_zero
)
{
int height = x_height;
int dim = w->height;
int width = w->width;
cudaSetDevice(w->device);
CudaBuffers* buffers = get_buffers(w->device);
const half* x_mapped = x;
if (w->cuda_x_map)
{
column_remap_cuda(x, buffers->temp_state, x_height, dim, w->cuda_x_map);
x_mapped = buffers->temp_state;
}
w->reconstruct(buffers->temp_dq);
const half alpha = __float2half(1.0f);
const half beta = no_zero ? __float2half(1.0f) : __float2half(0.0f);
cublasHgemm(handle, CUBLAS_OP_N, CUBLAS_OP_N, width, height, dim, &alpha, buffers->temp_dq, width, x_mapped, dim, &beta, out, width);
// const float alpha = 1.0f;
// const float beta = no_zero ? 1.0f : 0.0f;
// cublasSgemmEx(handle, CUBLAS_OP_N, CUBLAS_OP_N, width, height, dim, &alpha, buffers->temp_dq, CUDA_R_16F, width,
// x_mapped, CUDA_R_16F, dim, &beta, out, CUDA_R_16F, width);
}
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/q4_matmul.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _q4_matmul_cuh
#define _q4_matmul_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
#include <cstdio>
#include <ATen/cuda/CUDAContext.h>
#include "q4_matrix.cuh"
#include "../tuning.h"
void q4_matmul_cuda
(
ExLlamaTuning* tuningParams,
const half* x,
const int x_height,
const Q4Matrix* w,
half* out,
bool no_zero = false,
cudaStream_t alt_stream = NULL
);
void q4_matmul_recons_cuda
(
ExLlamaTuning* tuningParams,
const half* x,
const int x_height,
Q4Matrix* w,
half* out,
const cublasHandle_t handle,
bool no_zero = false
);
#endif
| 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/q4_matrix.cu | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#include "q4_matrix.cuh"
#include <vector>
#include "../util.cuh"
#include "../matrix.cuh"
using namespace std;
const int UNSHUF_BLOCKSIZE_X = 64;
const int RECONS_THREADS_X = 64; // Block size and thread count along columns in out, each thread converts 1 column
const int RECONS_THREADS_Y = 1; // Block size and thread count along rows in x and out, each thread converts 8 rows
vector<Q4Matrix*> g_q4_matrices;
void g_q4_keep_matrix(Q4Matrix* m)
{
g_q4_matrices.push_back(m);
}
void g_q4_free_matrices()
{
for (const auto& m : g_q4_matrices) delete m;
g_q4_matrices.clear();
}
Q4Matrix::Q4Matrix
(
const int _height,
const int _width,
const int _groups,
uint32_t* _qweight,
uint32_t* _qzeros,
half* _scales,
uint32_t* _g_idx,
const int _device
) :
height(_height),
width(_width),
groups(_groups),
device(_device)
{
cudaSetDevice(device);
cuda_qweight = _qweight;
cuda_qzeros = _qzeros;
cuda_scales = _scales;
groupsize = height / groups;
if (_g_idx) make_sequential(_g_idx);
}
Q4Matrix::~Q4Matrix()
{
}
// Make sequential
__global__ void make_sequential_kernel
(
const uint32_t* __restrict__ w,
uint32_t* __restrict__ w_new,
const uint32_t* __restrict__ x_map,
const int w_height,
const int w_width
)
{
const uint64_t* w2 = (uint64_t*) w;
uint64_t* w_new2 = (uint64_t*) w_new;
int w2_stride = w_width >> 1;
int w2_column = UNSHUF_BLOCKSIZE_X * blockIdx.x + threadIdx.x;
int w_new2_row = blockIdx.y;
int x_map_idx = w_new2_row << 3;
uint64_t dst = 0;
#pragma unroll
for (int i = 0; i < 8; i++)
{
int source_row = x_map[x_map_idx++];
int w2_row = source_row >> 3;
int w2_subrow = source_row & 0x07;
int w2_row_shift = w2_subrow << 2;
int wnew2_row_shift = i << 2;
uint64_t src = w2[w2_row * w2_stride + w2_column];
src >>= w2_row_shift;
src &= 0x0000000f0000000f;
src <<= wnew2_row_shift;
dst |= src;
}
w_new2[w_new2_row * w2_stride + w2_column] = dst;
}
void Q4Matrix::make_sequential(const uint32_t* cpu_g_idx)
{
uint32_t* cuda_new_qweight = NULL;
cudaMalloc(&cuda_new_qweight, height / 8 * width * sizeof(uint32_t));
cudaMalloc(&cuda_x_map, height * sizeof(uint32_t)); // TODO: Should probably be allocated in PyTorch
uint32_t* cpu_g_idx_map = (uint32_t*) calloc(groups, sizeof(uint32_t));
uint32_t* cpu_x_map = (uint32_t*) malloc(height * sizeof(uint32_t));
uint32_t* cpu_x_map_inv = (uint32_t*) malloc(height * sizeof(uint32_t));
// Group histogram
for (int i = 0; i < height; i++) cpu_g_idx_map[cpu_g_idx[i]]++;
// Group map
for (int i = 0, acc = 0; i < groups; i++)
{
short tmp = cpu_g_idx_map[i];
cpu_g_idx_map[i] = acc;
acc += tmp;
}
// X map (inverse)
for (int row = 0; row < height; row++)
{
uint32_t target_group = cpu_g_idx[row];
uint32_t target_row = cpu_g_idx_map[target_group];
cpu_g_idx_map[target_group]++;
cpu_x_map_inv[row] = target_row;
}
// X map
for (int row = 0; row < height; row++) cpu_x_map[cpu_x_map_inv[row]] = row;
// Move to CUDA
cudaMemcpyAsync(cuda_x_map, cpu_x_map, height * sizeof(uint32_t), cudaMemcpyHostToDevice);
// Rearrange rows in w
dim3 threads(UNSHUF_BLOCKSIZE_X, 1, 1);
dim3 blocks(width / UNSHUF_BLOCKSIZE_X / 2, height / 8, 1);
make_sequential_kernel<<<blocks, threads>>>(cuda_qweight, cuda_new_qweight, cuda_x_map, height / 8, width);
// Replace qweights
cudaMemcpyAsync(cuda_qweight, cuda_new_qweight, height / 8 * width * sizeof(uint32_t), cudaMemcpyDeviceToDevice);
// Cleanup
cudaDeviceSynchronize();
cudaFree(cuda_new_qweight);
free(cpu_g_idx_map);
free(cpu_x_map);
free(cpu_x_map_inv);
}
__global__ void reconstruct_kernel
(
const uint32_t* __restrict__ w,
half* __restrict__ out, // (y)
const half* __restrict__ w_scales,
const uint32_t* __restrict__ w_zeros,
const int height,
const int width,
const int groupsize
)
{
// Start of block
int column = RECONS_THREADS_X * blockIdx.x + threadIdx.x;
int row = (RECONS_THREADS_Y * blockIdx.y + threadIdx.y) * 8;
// Views
MatrixView_q4_column w_(w, height, width);
MatrixView_half_rw out_(out, height, width);
MatrixView_half w_scales_(w_scales, height / groupsize, width);
MatrixView_q4_row w_zeros_(w_zeros, height / groupsize, width);
// Groupsize version
int group = row / groupsize;
half w_scale = w_scales_.item(group, column);
uint32_t w_zero = w_zeros_.item(group, column) + 1;
uint32_t w_read = w_.item_uint32_t(row, column);
half* out_ptr = out_.item_ptr(row, column);
#pragma unroll
for (int s = 0; s < 32; s += 4)
{
half w_item = __hmul(__int2half_rn((int)((w_read >> s) & 0x0f) - w_zero), w_scale);
*out_ptr = w_item; out_ptr += out_.width;
}
}
void Q4Matrix::reconstruct(half* out)
{
dim3 threads(RECONS_THREADS_X, RECONS_THREADS_Y, 1);
dim3 blocks
(
(width + threads.x - 1) / threads.x,
(height / 8 + threads.y - 1) / threads.y,
1
);
reconstruct_kernel<<<blocks, threads>>>(cuda_qweight, out, cuda_scales, cuda_qzeros, height / 8, width, groupsize);
} | 0 |
hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels | hf_public_repos/text-generation-inference/server/exllama_kernels/exllama_kernels/cuda_func/q4_matrix.cuh | // Adapted from turboderp exllama: https://github.com/turboderp/exllama
#ifndef _q4_matrix_cuh
#define _q4_matrix_cuh
#include <cuda_runtime.h>
#include <cuda_fp16.h>
#include <cstdint>
class Q4Matrix
{
public:
int device;
int height;
int width;
int groups;
int groupsize;
uint32_t* cuda_qweight = NULL;
uint32_t* cuda_qzeros = NULL;
half* cuda_scales = NULL;
uint32_t* cuda_x_map = NULL;
Q4Matrix
(
const int _height,
const int _width,
const int _groups,
uint32_t* _qweight,
uint32_t* _qzeros,
half* _scales,
uint32_t* _g_idx,
const int _device
);
~Q4Matrix();
void reconstruct(half* out);
private:
void make_sequential(const uint32_t* cpu_g_idx);
};
void g_q4_keep_matrix(Q4Matrix* m);
void g_q4_free_matrices();
#endif | 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/tests/conftest.py | import pytest
from text_generation_server.pb import generate_pb2
@pytest.fixture
def default_pb_parameters():
return generate_pb2.NextTokenChooserParameters(
temperature=1.0,
repetition_penalty=1.0,
top_k=0,
top_p=1.0,
typical_p=1.0,
do_sample=False,
)
@pytest.fixture
def default_pb_stop_parameters():
return generate_pb2.StoppingCriteriaParameters(stop_sequences=[], max_new_tokens=10)
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/models/test_bloom.py | import pytest
import torch
from copy import copy
from transformers import AutoTokenizer
from text_generation_server.pb import generate_pb2
from text_generation_server.models.causal_lm import CausalLMBatch
from text_generation_server.utils import weight_hub_files, download_weights
from text_generation_server.models.bloom import BloomCausalLMBatch, BLOOMSharded
@pytest.fixture(scope="session")
def default_bloom():
model_id = "bigscience/bloom-560m"
revision = "main"
filenames = weight_hub_files(model_id, revision, ".safetensors")
download_weights(filenames, model_id, revision)
return BLOOMSharded(model_id)
@pytest.fixture(scope="session")
def bloom_560m_tokenizer():
return AutoTokenizer.from_pretrained("bigscience/bloom-560m", padding_side="left")
@pytest.fixture
def default_pb_request(default_pb_parameters, default_pb_stop_parameters):
return generate_pb2.Request(
id=0,
inputs="Test",
prefill_logprobs=True,
truncate=100,
parameters=default_pb_parameters,
stopping_parameters=default_pb_stop_parameters,
)
@pytest.fixture
def default_pb_batch(default_pb_request):
return generate_pb2.Batch(id=0, requests=[default_pb_request], size=1)
@pytest.fixture
def default_bloom_batch(default_pb_batch, bloom_560m_tokenizer):
return BloomCausalLMBatch.from_pb(
default_pb_batch, bloom_560m_tokenizer, torch.float32, torch.device("cpu")
)
@pytest.fixture
def default_multi_requests_bloom_batch(default_pb_request, bloom_560m_tokenizer):
req_0 = copy(default_pb_request)
req_0.id = 1
req_1 = default_pb_request
req_1.id = 2
req_1.stopping_parameters.max_new_tokens = 5
batch_pb = generate_pb2.Batch(id=0, requests=[req_0, req_1], size=2)
return BloomCausalLMBatch.from_pb(
batch_pb, bloom_560m_tokenizer, torch.float32, torch.device("cpu")
)
def test_batch_from_pb(default_pb_batch, default_bloom_batch):
batch = default_bloom_batch
assert batch.batch_id == default_pb_batch.id
assert batch.requests == default_pb_batch.requests
assert len(batch.input_ids) == default_pb_batch.size
assert batch.input_ids[0][-1] == 10264
assert torch.all(batch.input_ids[0][:-1] == 3)
assert batch.attention_mask[0][0] == 1
assert torch.all(batch.attention_mask[0][1:] == 0)
assert batch.past_key_values is None
assert all(
[
torch.equal(input_ids, all_input_ids[:, 0])
for input_ids, all_input_ids in zip(batch.input_ids, batch.all_input_ids)
]
)
assert batch.input_lengths == [1]
assert len(batch) == default_pb_batch.size
assert len(batch.next_token_choosers) == len(batch.stopping_criterias) == len(batch)
assert batch.max_input_length == batch.input_lengths[0]
def test_batch_concatenate_no_prefill(default_bloom_batch):
with pytest.raises(ValueError):
BloomCausalLMBatch.concatenate([default_bloom_batch, default_bloom_batch])
def test_causal_lm_batch_type(default_bloom):
assert default_bloom.batch_type == BloomCausalLMBatch
def test_causal_lm_generate_token(default_bloom, default_bloom_batch):
sequence_length = len(default_bloom_batch.all_input_ids[0])
generations, next_batch = default_bloom.generate_token(default_bloom_batch)
assert len(generations) == len(default_bloom_batch)
assert isinstance(next_batch, CausalLMBatch)
assert not next_batch.keys_head_dim_last
assert len(next_batch.all_input_ids) == len(next_batch)
assert len(next_batch.all_input_ids[0]) == sequence_length + 1
assert len(next_batch.attention_mask[0]) == 11
assert torch.all(next_batch.all_input_ids[0][-2:] == 10264)
assert torch.all(next_batch.all_input_ids[0][:-2] == 3)
assert torch.all(next_batch.attention_mask[0][:2] == 1)
assert torch.all(next_batch.attention_mask[0][2:] == 0)
assert next_batch.input_ids.shape == (len(next_batch), 1)
assert next_batch.input_ids[0, 0] == 10264
assert next_batch.input_lengths == [2]
assert next_batch.max_input_length == next_batch.input_lengths[0]
assert next_batch.past_key_values is not None
assert all(
[p[0].shape == (16, 64, sequence_length) for p in next_batch.past_key_values]
)
assert all(
[p[1].shape == (16, sequence_length, 64) for p in next_batch.past_key_values]
)
assert all([generation.generated_text is None for generation in generations])
assert all([len(generation.prefill_tokens) == 1 for generation in generations])
assert all([generation.token_id.item() == 10264 for generation in generations])
assert all([generation.token_text == "Test" for generation in generations])
assert generations[0].request_id == 0
def test_causal_lm_generate_token_completion(default_bloom, default_bloom_batch):
next_batch = default_bloom_batch
for _ in range(default_bloom_batch.stopping_criterias[0].max_new_tokens - 1):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(default_bloom_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert (
generations[0].generated_text.text == "TestTestTestTestTestTestTestTestTestTest"
)
assert generations[0].request_id == default_bloom_batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== default_bloom_batch.stopping_criterias[0].max_new_tokens
)
def test_causal_lm_generate_token_completion_multi(
default_bloom, default_multi_requests_bloom_batch
):
next_batch = default_multi_requests_bloom_batch
for i in range(
default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens - 1
):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(default_multi_requests_bloom_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert generations[1].generated_text.text == "TestTestTestTestTest"
assert (
generations[1].request_id == default_multi_requests_bloom_batch.requests[1].id
)
assert (
generations[1].generated_text.generated_tokens
== default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens
)
# Copy stopping_criterias before filtering
stopping_criterias = default_multi_requests_bloom_batch.stopping_criterias.copy()
next_batch = next_batch.filter([next_batch.requests[0].id])
for _ in range(
stopping_criterias[0].max_new_tokens - stopping_criterias[1].max_new_tokens - 1
):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert (
generations[0].generated_text.text == "TestTestTestTestTestTestTestTestTestTest"
)
assert (
generations[0].request_id == default_multi_requests_bloom_batch.requests[0].id
)
assert (
generations[0].generated_text.generated_tokens
== default_multi_requests_bloom_batch.stopping_criterias[0].max_new_tokens
)
def test_batch_concatenate(
default_bloom, default_bloom_batch, default_multi_requests_bloom_batch
):
next_batch_0 = default_bloom_batch
_, next_batch_0 = default_bloom.generate_token(next_batch_0)
_, next_batch_0 = default_bloom.generate_token(next_batch_0)
next_batch_1 = default_multi_requests_bloom_batch
_, next_batch_1 = default_bloom.generate_token(next_batch_1)
# Clone past_key_values before concatenating to compare after,
# because they are removed from the concatenated batches
next_batch_0_past_key_values = [
(k.clone(), v.clone()) for (k, v) in next_batch_0.past_key_values
]
next_batch_1_past_key_values = [
(k.clone(), v.clone()) for (k, v) in next_batch_1.past_key_values
]
next_batch = BloomCausalLMBatch.concatenate([next_batch_0, next_batch_1])
assert torch.equal(next_batch.all_input_ids[0], next_batch_0.all_input_ids[0])
assert torch.equal(next_batch.all_input_ids[1], next_batch_1.all_input_ids[0])
assert torch.equal(next_batch.all_input_ids[2], next_batch_1.all_input_ids[1])
assert torch.all(
next_batch.attention_mask[0, : -next_batch.padding_right_offset] == 1
)
assert torch.all(
next_batch.attention_mask[1:, 1 : -next_batch.padding_right_offset] == 1
)
assert torch.all(next_batch.attention_mask[1:, 3:] == 0)
assert next_batch.batch_id == 0
assert torch.all(next_batch.input_ids == 10264)
assert next_batch.input_lengths == [3, 2, 2]
assert next_batch.max_input_length == 3
assert next_batch.requests[0] == next_batch_0.requests[0]
assert next_batch.requests[1:] == next_batch_1.requests
assert next_batch.next_token_choosers[0] == next_batch_0.next_token_choosers[0]
assert next_batch.next_token_choosers[1:] == next_batch_1.next_token_choosers
assert next_batch.stopping_criterias[0] == next_batch_0.stopping_criterias[0]
assert next_batch.stopping_criterias[1:] == next_batch_1.stopping_criterias
assert next_batch.past_key_values is not None
assert all([p[0].shape == (3, 16, 64, 2) for p in next_batch.past_key_values])
assert all([p[1].shape == (3, 16, 2, 64) for p in next_batch.past_key_values])
for i, past in enumerate(next_batch.past_key_values):
assert torch.equal(next_batch_0_past_key_values[i][0][:, :, -2:], past[0][0])
assert torch.equal(
next_batch_1_past_key_values[i][0][:, :, -1:],
past[0][1:, :, :, -1].reshape(-1, 64, 1),
)
assert torch.equal(next_batch_0_past_key_values[i][1][:, -2:, :], past[1][0])
assert torch.equal(
next_batch_1_past_key_values[i][1][:, -1:, :],
past[1][1:, :, -1, :].reshape(-1, 1, 64),
)
for _ in range(
default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens - 2
):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 3
assert generations[2].generated_text.text == "TestTestTestTestTest"
assert (
generations[2].request_id == default_multi_requests_bloom_batch.requests[1].id
)
assert (
generations[2].generated_text.generated_tokens
== default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens
)
next_batch = next_batch.filter(
[next_batch.requests[0].id, next_batch.requests[1].id]
)
for _ in range(
default_bloom_batch.stopping_criterias[0].max_new_tokens
- default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens
- 2
):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert (
generations[0].generated_text.text == "TestTestTestTestTestTestTestTestTestTest"
)
assert generations[0].request_id == default_bloom_batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== default_bloom_batch.stopping_criterias[0].max_new_tokens
)
next_batch = next_batch.filter([next_batch.requests[1].id])
for _ in range(
default_multi_requests_bloom_batch.stopping_criterias[0].max_new_tokens
- default_bloom_batch.stopping_criterias[0].max_new_tokens
- default_multi_requests_bloom_batch.stopping_criterias[1].max_new_tokens
- 4
):
generations, next_batch = default_bloom.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_bloom.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert (
generations[0].generated_text.text == "TestTestTestTestTestTestTestTestTestTest"
)
assert (
generations[0].request_id == default_multi_requests_bloom_batch.requests[0].id
)
assert (
generations[0].generated_text.generated_tokens
== default_multi_requests_bloom_batch.stopping_criterias[0].max_new_tokens
)
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/models/test_causal_lm.py | import pytest
import torch
from copy import copy
from transformers import AutoTokenizer
from text_generation_server.pb import generate_pb2
from text_generation_server.models.causal_lm import CausalLM, CausalLMBatch
@pytest.fixture(scope="session")
def default_causal_lm():
return CausalLM("gpt2")
@pytest.fixture(scope="session")
def gpt2_tokenizer():
tokenizer = AutoTokenizer.from_pretrained("gpt2", padding_side="left")
tokenizer.pad_token_id = 50256
return tokenizer
@pytest.fixture
def default_pb_request(default_pb_parameters, default_pb_stop_parameters):
return generate_pb2.Request(
id=0,
inputs="Test",
prefill_logprobs=True,
truncate=100,
parameters=default_pb_parameters,
stopping_parameters=default_pb_stop_parameters,
)
@pytest.fixture
def default_pb_batch(default_pb_request):
return generate_pb2.Batch(id=0, requests=[default_pb_request], size=1)
@pytest.fixture
def default_causal_lm_batch(default_pb_batch, gpt2_tokenizer):
return CausalLMBatch.from_pb(
default_pb_batch, gpt2_tokenizer, torch.float32, torch.device("cpu")
)
@pytest.fixture
def default_multi_requests_causal_lm_batch(default_pb_request, gpt2_tokenizer):
req_0 = copy(default_pb_request)
req_0.id = 1
req_1 = default_pb_request
req_1.id = 2
req_1.stopping_parameters.max_new_tokens = 5
batch_pb = generate_pb2.Batch(id=1, requests=[req_0, req_1], size=2)
return CausalLMBatch.from_pb(
batch_pb, gpt2_tokenizer, torch.float32, torch.device("cpu")
)
def test_batch_from_pb(default_pb_batch, default_causal_lm_batch):
batch = default_causal_lm_batch
assert batch.batch_id == default_pb_batch.id
assert batch.requests == default_pb_batch.requests
assert len(batch.input_ids) == default_pb_batch.size
assert batch.input_ids[0][-1] == 14402
assert torch.all(batch.input_ids[0][:-1] == 50256)
assert batch.attention_mask[0, 0] == 1
assert torch.all(batch.attention_mask[0, 1:] == 0)
assert batch.past_key_values is None
assert all(
[
torch.equal(input_ids, all_input_ids[:, 0])
for input_ids, all_input_ids in zip(batch.input_ids, batch.all_input_ids)
]
)
assert batch.input_lengths == [1]
assert len(batch) == default_pb_batch.size
assert len(batch.next_token_choosers) == len(batch.stopping_criterias) == len(batch)
assert batch.max_input_length == batch.input_lengths[0]
def test_batch_concatenate_no_prefill(default_causal_lm_batch):
with pytest.raises(ValueError):
CausalLMBatch.concatenate([default_causal_lm_batch, default_causal_lm_batch])
def test_causal_lm_batch_type(default_causal_lm):
assert default_causal_lm.batch_type == CausalLMBatch
def test_causal_lm_generate_token(default_causal_lm, default_causal_lm_batch):
sequence_length = len(default_causal_lm_batch.all_input_ids[0])
generations, next_batch = default_causal_lm.generate_token(default_causal_lm_batch)
assert len(generations) == len(next_batch)
assert isinstance(next_batch, CausalLMBatch)
assert len(next_batch.all_input_ids) == len(next_batch)
assert len(next_batch.all_input_ids[0]) == sequence_length + 1
assert len(next_batch.attention_mask[0]) == 11
assert next_batch.all_input_ids[0][-1] == 13
assert next_batch.all_input_ids[0][-2] == 14402
assert torch.all(next_batch.all_input_ids[0][:-2] == 50256)
assert torch.all(next_batch.attention_mask[0][0:2] == 1)
assert torch.all(next_batch.attention_mask[0][2:] == 0)
assert next_batch.input_ids.shape == (len(next_batch), 1)
assert next_batch.input_ids[0, 0] == 13
assert next_batch.input_lengths == [2]
assert next_batch.max_input_length == next_batch.input_lengths[0]
assert next_batch.past_key_values is not None
assert all(
[p[0].shape == (1, 12, sequence_length, 64) for p in next_batch.past_key_values]
)
assert all(
[p[1].shape == (1, 12, sequence_length, 64) for p in next_batch.past_key_values]
)
assert all([generation.generated_text is None for generation in generations])
assert all([len(generation.prefill_tokens) == 1 for generation in generations])
assert all([generation.token_id.item() == 13 for generation in generations])
assert all([generation.token_text == "." for generation in generations])
assert generations[0].request_id == 0
def test_causal_lm_generate_token_completion(
default_causal_lm, default_causal_lm_batch
):
next_batch = default_causal_lm_batch
for _ in range(default_causal_lm_batch.stopping_criterias[0].max_new_tokens - 1):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == ".java:784) at net.minecraft."
assert generations[0].request_id == default_causal_lm_batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== default_causal_lm_batch.stopping_criterias[0].max_new_tokens
)
def test_causal_lm_generate_token_completion_multi(
default_causal_lm, default_multi_requests_causal_lm_batch
):
next_batch = default_multi_requests_causal_lm_batch
for i in range(
default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens - 1
):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert generations[1].generated_text.text == ".java:784)"
assert (
generations[1].request_id
== default_multi_requests_causal_lm_batch.requests[1].id
)
assert (
generations[1].generated_text.generated_tokens
== default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens
)
# Copy stopping_criterias before filtering
stopping_criterias = (
default_multi_requests_causal_lm_batch.stopping_criterias.copy()
)
next_batch = next_batch.filter([next_batch.requests[0].id])
for _ in range(
stopping_criterias[0].max_new_tokens - stopping_criterias[1].max_new_tokens - 1
):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == ".java:784) at net.minecraft."
assert (
generations[0].request_id
== default_multi_requests_causal_lm_batch.requests[0].id
)
assert (
generations[0].generated_text.generated_tokens
== default_multi_requests_causal_lm_batch.stopping_criterias[0].max_new_tokens
)
def test_batch_concatenate(
default_causal_lm, default_causal_lm_batch, default_multi_requests_causal_lm_batch
):
next_batch_0 = default_causal_lm_batch
_, next_batch_0 = default_causal_lm.generate_token(next_batch_0)
_, next_batch_0 = default_causal_lm.generate_token(next_batch_0)
next_batch_1 = default_multi_requests_causal_lm_batch
_, next_batch_1 = default_causal_lm.generate_token(next_batch_1)
# Clone past_key_values before concatenating to compare after,
# because they are removed from the concatenated batches
next_batch_0_past_key_values = [
(k.clone(), v.clone()) for (k, v) in next_batch_0.past_key_values
]
next_batch_1_past_key_values = [
(k.clone(), v.clone()) for (k, v) in next_batch_1.past_key_values
]
next_batch = CausalLMBatch.concatenate([next_batch_0, next_batch_1])
assert torch.equal(next_batch.all_input_ids[0], next_batch_0.all_input_ids[0])
assert torch.equal(next_batch.all_input_ids[1], next_batch_1.all_input_ids[0])
assert torch.equal(next_batch.all_input_ids[2], next_batch_1.all_input_ids[1])
assert torch.all(
next_batch.attention_mask[0, : -next_batch.padding_right_offset] == 1
)
assert torch.all(
next_batch.attention_mask[1:, 1 : -next_batch.padding_right_offset] == 1
)
assert torch.all(next_batch.attention_mask[1:, 3:] == 0)
assert next_batch.batch_id == 0
assert next_batch.input_ids[0, 0] == 12355
assert torch.all(next_batch.input_ids[1:] == 13)
assert next_batch.input_lengths == [3, 2, 2]
assert next_batch.max_input_length == 3
assert next_batch.requests[0] == next_batch_0.requests[0]
assert next_batch.requests[1:] == next_batch_1.requests
assert next_batch.next_token_choosers[0] == next_batch_0.next_token_choosers[0]
assert next_batch.next_token_choosers[1:] == next_batch_1.next_token_choosers
assert next_batch.stopping_criterias[0] == next_batch_0.stopping_criterias[0]
assert next_batch.stopping_criterias[1:] == next_batch_1.stopping_criterias
assert next_batch.past_key_values is not None
assert all([p[0].shape == (3, 12, 2, 64) for p in next_batch.past_key_values])
assert all([p[1].shape == (3, 12, 2, 64) for p in next_batch.past_key_values])
for i, past in enumerate(next_batch.past_key_values):
assert torch.equal(next_batch_0_past_key_values[i][0][0, :, -2:], past[0][0])
assert torch.equal(
next_batch_1_past_key_values[i][0][:, :, -1:], past[0][1:, :, -1:, :]
)
assert torch.equal(next_batch_0_past_key_values[i][1][0, :, -2:], past[1][0])
assert torch.equal(
next_batch_1_past_key_values[i][1][:, :, -1:], past[1][1:, :, -1:, :]
)
for _ in range(
default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens - 2
):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 3
assert generations[2].generated_text.text == ".java:784)"
assert (
generations[2].request_id
== default_multi_requests_causal_lm_batch.requests[1].id
)
assert (
generations[2].generated_text.generated_tokens
== default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens
)
next_batch = next_batch.filter(
[next_batch.requests[0].id, next_batch.requests[1].id]
)
for _ in range(
default_causal_lm_batch.stopping_criterias[0].max_new_tokens
- default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens
- 2
):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert generations[0].generated_text.text == ".java:784) at net.minecraft."
assert generations[0].request_id == default_causal_lm_batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== default_causal_lm_batch.stopping_criterias[0].max_new_tokens
)
next_batch = next_batch.filter([next_batch.requests[1].id])
for _ in range(
default_multi_requests_causal_lm_batch.stopping_criterias[0].max_new_tokens
- default_causal_lm_batch.stopping_criterias[0].max_new_tokens
- default_multi_requests_causal_lm_batch.stopping_criterias[1].max_new_tokens
- 4
):
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_causal_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == ".java:784) at net.minecraft."
assert (
generations[0].request_id
== default_multi_requests_causal_lm_batch.requests[0].id
)
assert (
generations[0].generated_text.generated_tokens
== default_multi_requests_causal_lm_batch.stopping_criterias[0].max_new_tokens
)
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/models/test_model.py | import pytest
import torch
from transformers import AutoTokenizer
from text_generation_server.models import Model
def get_test_model():
class TestModel(Model):
def batch_type(self):
raise NotImplementedError
def generate_token(self, batch):
raise NotImplementedError
tokenizer = AutoTokenizer.from_pretrained("huggingface/llama-7b")
model = TestModel(
torch.nn.Linear(1, 1), tokenizer, False, torch.float32, torch.device("cpu")
)
return model
@pytest.mark.private
def test_decode_streaming_english_spaces():
model = get_test_model()
truth = "Hello here, this is a simple test"
all_input_ids = [15043, 1244, 29892, 445, 338, 263, 2560, 1243]
assert (
all_input_ids == model.tokenizer(truth, add_special_tokens=False)["input_ids"]
)
decoded_text = ""
offset = 0
token_offset = 0
for i in range(len(all_input_ids)):
text, offset, token_offset = model.decode_token(
all_input_ids[: i + 1], offset, token_offset
)
decoded_text += text
assert decoded_text == truth
@pytest.mark.private
def test_decode_streaming_chinese_utf8():
model = get_test_model()
truth = "我很感谢你的热情"
all_input_ids = [
30672,
232,
193,
139,
233,
135,
162,
235,
179,
165,
30919,
30210,
234,
134,
176,
30993,
]
decoded_text = ""
offset = 0
token_offset = 0
for i in range(len(all_input_ids)):
text, offset, token_offset = model.decode_token(
all_input_ids[: i + 1], offset, token_offset
)
decoded_text += text
assert decoded_text == truth
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/models/test_santacoder.py | import pytest
from text_generation_server.pb import generate_pb2
from text_generation_server.models.causal_lm import CausalLMBatch
from text_generation_server.models.santacoder import SantaCoder
@pytest.fixture(scope="session")
def default_santacoder():
return SantaCoder("bigcode/santacoder")
@pytest.fixture
def default_pb_request(default_pb_parameters, default_pb_stop_parameters):
return generate_pb2.Request(
id=0,
inputs="def",
prefill_logprobs=True,
truncate=100,
parameters=default_pb_parameters,
stopping_parameters=default_pb_stop_parameters,
)
@pytest.fixture
def default_pb_batch(default_pb_request):
return generate_pb2.Batch(id=0, requests=[default_pb_request], size=1)
@pytest.fixture
def default_fim_pb_request(default_pb_parameters, default_pb_stop_parameters):
return generate_pb2.Request(
id=0,
inputs="<fim-prefix>def<fim-suffix>world<fim-middle>",
prefill_logprobs=True,
truncate=100,
parameters=default_pb_parameters,
stopping_parameters=default_pb_stop_parameters,
)
@pytest.fixture
def default_fim_pb_batch(default_fim_pb_request):
return generate_pb2.Batch(id=0, requests=[default_fim_pb_request], size=1)
@pytest.mark.skip
def test_santacoder_generate_token_completion(default_santacoder, default_pb_batch):
batch = CausalLMBatch.from_pb(
default_pb_batch,
default_santacoder.tokenizer,
default_santacoder.dtype,
default_santacoder.device,
)
next_batch = batch
for _ in range(batch.stopping_criterias[0].max_new_tokens - 1):
generations, next_batch = default_santacoder.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_santacoder.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == " test_get_all_users_with_"
assert generations[0].request_id == batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== batch.stopping_criterias[0].max_new_tokens
)
@pytest.mark.skip
def test_fim_santacoder_generate_token_completion(
default_santacoder, default_fim_pb_batch
):
batch = CausalLMBatch.from_pb(
default_fim_pb_batch,
default_santacoder.tokenizer,
default_santacoder.dtype,
default_santacoder.device,
)
next_batch = batch
for _ in range(batch.stopping_criterias[0].max_new_tokens - 1):
generations, next_batch = default_santacoder.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_santacoder.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert (
generations[0].generated_text.text
== """ineProperty(exports, "__esModule", { value"""
)
assert generations[0].request_id == batch.requests[0].id
assert (
generations[0].generated_text.generated_tokens
== batch.stopping_criterias[0].max_new_tokens
)
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/models/test_seq2seq_lm.py | import pytest
import torch
from copy import copy
from transformers import AutoTokenizer
from text_generation_server.pb import generate_pb2
from text_generation_server.models.seq2seq_lm import Seq2SeqLM, Seq2SeqLMBatch
@pytest.fixture(scope="session")
def mt0_small_tokenizer():
tokenizer = AutoTokenizer.from_pretrained(
"bigscience/mt0-small", padding_side="left"
)
tokenizer.bos_token_id = 0
return tokenizer
@pytest.fixture(scope="session")
def default_seq2seq_lm():
return Seq2SeqLM("bigscience/mt0-small")
@pytest.fixture
def default_pb_request(default_pb_parameters, default_pb_stop_parameters):
return generate_pb2.Request(
id=0,
inputs="Test",
prefill_logprobs=True,
truncate=100,
parameters=default_pb_parameters,
stopping_parameters=default_pb_stop_parameters,
)
@pytest.fixture
def default_pb_batch(default_pb_request):
return generate_pb2.Batch(id=0, requests=[default_pb_request], size=1)
@pytest.fixture
def default_seq2seq_lm_batch(default_pb_batch, mt0_small_tokenizer):
return Seq2SeqLMBatch.from_pb(
default_pb_batch, mt0_small_tokenizer, torch.float32, torch.device("cpu")
)
@pytest.fixture
def default_multi_requests_seq2seq_lm_batch(default_pb_request, mt0_small_tokenizer):
req_0 = copy(default_pb_request)
req_0.id = 1
req_1 = default_pb_request
req_1.id = 2
req_1.stopping_parameters.max_new_tokens = 5
batch_pb = generate_pb2.Batch(id=0, requests=[req_0, req_1], size=2)
return Seq2SeqLMBatch.from_pb(
batch_pb, mt0_small_tokenizer, torch.float32, torch.device("cpu")
)
def test_batch_from_pb(default_pb_batch, default_seq2seq_lm_batch):
batch = default_seq2seq_lm_batch
sequence_length = len(default_seq2seq_lm_batch.input_ids[0])
assert batch.batch_id == default_pb_batch.id
assert batch.requests == default_pb_batch.requests
assert batch.input_ids.shape == (default_pb_batch.size, sequence_length)
assert batch.input_ids[0][-2] == 4268
assert batch.input_ids[0][-1] == 1
assert torch.all(batch.input_ids[0][:-2] == 0)
assert torch.all(batch.attention_mask[0][-2:] == 1)
assert torch.all(batch.attention_mask[0][:-2] == 0)
assert len(batch.decoder_input_ids) == default_pb_batch.size
assert batch.decoder_attention_mask is None
assert batch.encoder_last_hidden_state is None
assert batch.past_key_values is None
assert batch.input_lengths == [2]
assert batch.decoder_input_lengths == [1]
assert len(batch) == default_pb_batch.size
assert len(batch.next_token_choosers) == len(batch.stopping_criterias) == len(batch)
assert batch.max_input_length == batch.input_lengths[0]
assert batch.max_decoder_input_length == batch.decoder_input_lengths[0]
def test_batch_concatenate_no_prefill(default_seq2seq_lm_batch):
with pytest.raises(ValueError):
Seq2SeqLMBatch.concatenate([default_seq2seq_lm_batch, default_seq2seq_lm_batch])
def test_seq2seq_lm_batch_type(default_seq2seq_lm):
assert default_seq2seq_lm.batch_type == Seq2SeqLMBatch
def test_seq2seq_lm_generate_token(default_seq2seq_lm, default_seq2seq_lm_batch):
sequence_length = len(default_seq2seq_lm_batch.input_ids[0])
generations, next_batch = default_seq2seq_lm.generate_token(
default_seq2seq_lm_batch
)
assert len(generations) == len(next_batch)
assert isinstance(next_batch, Seq2SeqLMBatch)
assert next_batch.input_ids is None
assert torch.equal(
next_batch.attention_mask, default_seq2seq_lm_batch.attention_mask
)
assert next_batch.input_lengths == default_seq2seq_lm_batch.input_lengths
assert next_batch.max_input_length == default_seq2seq_lm_batch.max_input_length
assert (
next_batch.next_token_choosers == default_seq2seq_lm_batch.next_token_choosers
)
assert next_batch.stopping_criterias == default_seq2seq_lm_batch.stopping_criterias
assert len(next_batch.decoder_input_ids) == len(next_batch)
assert next_batch.all_decoder_input_ids[0][0] == 0
assert next_batch.all_decoder_input_ids[0][1] == 259
assert next_batch.decoder_attention_mask is None
assert next_batch.encoder_last_hidden_state.shape == (1, sequence_length, 512)
assert next_batch.decoder_input_lengths == [2]
assert next_batch.max_decoder_input_length == 2
assert next_batch.past_key_values is not None
assert all(
[p[0].shape == (len(next_batch), 6, 1, 64) for p in next_batch.past_key_values]
)
assert all(
[p[1].shape == (len(next_batch), 6, 1, 64) for p in next_batch.past_key_values]
)
assert all(
[
p[2].shape == (len(next_batch), 6, sequence_length, 64)
for p in next_batch.past_key_values
]
)
assert all(
[
p[3].shape == (len(next_batch), 6, sequence_length, 64)
for p in next_batch.past_key_values
]
)
assert all([generation.generated_text is None for generation in generations])
assert all([len(generation.prefill_tokens) == 1 for generation in generations])
assert all([generation.token_id.item() == 259 for generation in generations])
assert all([generation.token_text == " " for generation in generations])
assert generations[0].request_id == 0
def test_seq2seq_lm_generate_token_completion(
default_seq2seq_lm, default_seq2seq_lm_batch
):
next_batch = default_seq2seq_lm_batch
for _ in range(6):
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == "a few weeks"
assert generations[0].request_id == default_seq2seq_lm_batch.requests[0].id
assert generations[0].generated_text.generated_tokens == 7
def test_seq2seq_lm_generate_token_completion_multi(
default_seq2seq_lm, default_multi_requests_seq2seq_lm_batch
):
next_batch = default_multi_requests_seq2seq_lm_batch
for i in range(4):
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert generations[1].generated_text.text == "a few "
assert (
generations[1].request_id
== default_multi_requests_seq2seq_lm_batch.requests[1].id
)
assert generations[1].generated_text.generated_tokens == 5
next_batch = next_batch.filter([next_batch.requests[0].id])
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == "a few weeks"
assert (
generations[0].request_id
== default_multi_requests_seq2seq_lm_batch.requests[0].id
)
assert generations[0].generated_text.generated_tokens == 7
def test_batch_concatenate(
default_seq2seq_lm,
default_seq2seq_lm_batch,
default_multi_requests_seq2seq_lm_batch,
):
next_batch_0 = default_seq2seq_lm_batch
_, next_batch_0 = default_seq2seq_lm.generate_token(next_batch_0)
_, next_batch_0 = default_seq2seq_lm.generate_token(next_batch_0)
next_batch_1 = default_multi_requests_seq2seq_lm_batch
_, next_batch_1 = default_seq2seq_lm.generate_token(next_batch_1)
# Copy hidden state because it is removed from the concatenated branches
next_batch_0_encoder_last_hidden_state = next_batch_0.encoder_last_hidden_state
next_batch_1_encoder_last_hidden_state = next_batch_1.encoder_last_hidden_state
# Clone past_key_values before concatenating to compare after,
# because they are removed from the concatenated batches
next_batch_0_past_key_values = [
[t.clone() for t in layer] for layer in next_batch_0.past_key_values
]
next_batch_1_past_key_values = [
[t.clone() for t in layer] for layer in next_batch_1.past_key_values
]
next_batch = Seq2SeqLMBatch.concatenate([next_batch_0, next_batch_1])
assert next_batch.batch_id == 0
assert torch.equal(
next_batch.decoder_input_ids[0], next_batch_0.decoder_input_ids[0]
)
assert next_batch.all_decoder_input_ids[1][0] == 0
assert next_batch.all_decoder_input_ids[2][0] == 0
assert torch.equal(
next_batch.decoder_input_ids[1:, -2:], next_batch_1.decoder_input_ids
)
assert torch.all(next_batch.decoder_attention_mask[0, :3] == 1)
assert torch.all(next_batch.decoder_attention_mask[0, 3:] == 0)
assert torch.all(next_batch.decoder_attention_mask[1:, 0] == 0)
assert torch.all(next_batch.decoder_attention_mask[1:, 1:3] == 1)
assert torch.equal(
next_batch.encoder_last_hidden_state[0],
next_batch_0_encoder_last_hidden_state[0, -2:],
)
assert torch.equal(
next_batch.encoder_last_hidden_state[1:],
next_batch_1_encoder_last_hidden_state[:, -2:],
)
assert next_batch.input_lengths == [2, 2, 2]
assert next_batch.decoder_input_lengths == [3, 2, 2]
assert next_batch.max_input_length == 2
assert next_batch.max_decoder_input_length == 3
assert next_batch.requests[0] == next_batch_0.requests[0]
assert next_batch.requests[1:] == next_batch_1.requests
assert next_batch.next_token_choosers[0] == next_batch_0.next_token_choosers[0]
assert next_batch.next_token_choosers[1:] == next_batch_1.next_token_choosers
assert next_batch.stopping_criterias[0] == next_batch_0.stopping_criterias[0]
assert next_batch.stopping_criterias[1:] == next_batch_1.stopping_criterias
assert next_batch.past_key_values is not None
assert all(
[p[0].shape == (len(next_batch), 6, 2, 64) for p in next_batch.past_key_values]
)
assert all(
[p[1].shape == (len(next_batch), 6, 2, 64) for p in next_batch.past_key_values]
)
assert all(
[p[2].shape == (len(next_batch), 6, 2, 64) for p in next_batch.past_key_values]
)
assert all(
[p[3].shape == (len(next_batch), 6, 2, 64) for p in next_batch.past_key_values]
)
for i, past in enumerate(next_batch.past_key_values):
assert torch.equal(next_batch_0_past_key_values[i][0][0, :, -2:, :], past[0][0])
assert torch.equal(
next_batch_1_past_key_values[i][0][:, :, -1:, :], past[0][1:, :, -1:, :]
)
assert torch.equal(next_batch_0_past_key_values[i][1][0, :, -2:, :], past[1][0])
assert torch.equal(
next_batch_1_past_key_values[i][1][:, :, -1:, :], past[1][1:, :, -1:, :]
)
assert torch.equal(next_batch_0_past_key_values[i][2][0, :, -2:, :], past[2][0])
assert torch.equal(
next_batch_1_past_key_values[i][2][:, :, -2:, :], past[2][1:]
)
assert torch.equal(next_batch_0_past_key_values[i][3][0, :, -2:, :], past[3][0])
assert torch.equal(
next_batch_1_past_key_values[i][3][:, :, -2:, :], past[3][1:]
)
for _ in range(3):
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert len(generations) == len(next_batch)
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 3
assert generations[2].generated_text.text == "a few "
assert (
generations[2].request_id
== default_multi_requests_seq2seq_lm_batch.requests[1].id
)
assert generations[2].generated_text.generated_tokens == 5
next_batch = next_batch.filter(
[next_batch.requests[0].id, next_batch.requests[1].id]
)
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is not None
assert len(generations) == 2
assert generations[0].generated_text.text == "a few weeks"
assert generations[0].request_id == default_seq2seq_lm_batch.requests[0].id
assert generations[0].generated_text.generated_tokens == 7
next_batch = next_batch.filter([next_batch.requests[1].id])
generations, next_batch = default_seq2seq_lm.generate_token(next_batch)
assert next_batch is None
assert len(generations) == 1
assert generations[0].generated_text.text == "a few weeks"
assert (
generations[0].request_id
== default_multi_requests_seq2seq_lm_batch.requests[0].id
)
assert generations[0].generated_text.generated_tokens == 7
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/utils/test_convert.py | from text_generation_server.utils.hub import (
download_weights,
weight_hub_files,
weight_files,
)
from text_generation_server.utils.convert import convert_files
def test_convert_files():
model_id = "bigscience/bloom-560m"
pt_filenames = weight_hub_files(model_id, extension=".bin")
local_pt_files = download_weights(pt_filenames, model_id)
local_st_files = [
p.parent / f"{p.stem.lstrip('pytorch_')}.safetensors" for p in local_pt_files
]
convert_files(local_pt_files, local_st_files, discard_names=[])
found_st_files = weight_files(model_id)
assert all([p in found_st_files for p in local_st_files])
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/utils/test_hub.py | import pytest
from text_generation_server.utils.hub import (
weight_hub_files,
download_weights,
weight_files,
EntryNotFoundError,
LocalEntryNotFoundError,
RevisionNotFoundError,
)
def test_weight_hub_files():
filenames = weight_hub_files("bigscience/bloom-560m")
assert filenames == ["model.safetensors"]
def test_weight_hub_files_llm():
filenames = weight_hub_files("bigscience/bloom")
assert filenames == [f"model_{i:05d}-of-00072.safetensors" for i in range(1, 73)]
def test_weight_hub_files_empty():
with pytest.raises(EntryNotFoundError):
weight_hub_files("bigscience/bloom", extension=".errors")
def test_download_weights():
model_id = "bigscience/bloom-560m"
filenames = weight_hub_files(model_id)
files = download_weights(filenames, model_id)
local_files = weight_files("bigscience/bloom-560m")
assert files == local_files
def test_weight_files_error():
with pytest.raises(RevisionNotFoundError):
weight_files("bigscience/bloom-560m", revision="error")
with pytest.raises(LocalEntryNotFoundError):
weight_files("bert-base-uncased")
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/utils/test_tokens.py | from text_generation_server.utils.tokens import (
StopSequenceCriteria,
StoppingCriteria,
FinishReason,
)
def test_stop_sequence_criteria():
criteria = StopSequenceCriteria("/test;")
assert not criteria("/")
assert not criteria("/test")
assert criteria("/test;")
assert not criteria("/test; ")
def test_stop_sequence_criteria_escape():
criteria = StopSequenceCriteria("<|stop|>")
assert not criteria("<")
assert not criteria("<|stop")
assert criteria("<|stop|>")
assert not criteria("<|stop|> ")
def test_stopping_criteria():
criteria = StoppingCriteria(0, [StopSequenceCriteria("/test;")], max_new_tokens=5)
assert criteria(65827, "/test") == (False, None)
assert criteria(30, ";") == (True, FinishReason.FINISH_REASON_STOP_SEQUENCE)
def test_stopping_criteria_eos():
criteria = StoppingCriteria(0, [StopSequenceCriteria("/test;")], max_new_tokens=5)
assert criteria(1, "") == (False, None)
assert criteria(0, "") == (True, FinishReason.FINISH_REASON_EOS_TOKEN)
def test_stopping_criteria_max():
criteria = StoppingCriteria(0, [StopSequenceCriteria("/test;")], max_new_tokens=5)
assert criteria(1, "") == (False, None)
assert criteria(1, "") == (False, None)
assert criteria(1, "") == (False, None)
assert criteria(1, "") == (False, None)
assert criteria(1, "") == (True, FinishReason.FINISH_REASON_LENGTH)
| 0 |
hf_public_repos/text-generation-inference/server/tests | hf_public_repos/text-generation-inference/server/tests/utils/test_watermark.py | # test_watermark_logits_processor.py
import os
import numpy as np
import torch
from text_generation_server.utils.watermark import WatermarkLogitsProcessor
GAMMA = os.getenv("WATERMARK_GAMMA", 0.5)
DELTA = os.getenv("WATERMARK_DELTA", 2.0)
def test_seed_rng():
input_ids = [101, 2036, 3731, 102, 2003, 103]
processor = WatermarkLogitsProcessor()
processor._seed_rng(input_ids)
assert isinstance(processor.rng, torch.Generator)
def test_get_greenlist_ids():
input_ids = [101, 2036, 3731, 102, 2003, 103]
processor = WatermarkLogitsProcessor()
result = processor._get_greenlist_ids(input_ids, 10, torch.device("cpu"))
assert max(result) <= 10
assert len(result) == int(10 * 0.5)
def test_calc_greenlist_mask():
processor = WatermarkLogitsProcessor()
scores = torch.tensor([[0.5, 0.3, 0.2, 0.8], [0.1, 0.2, 0.7, 0.9]])
greenlist_token_ids = torch.tensor([2, 3])
result = processor._calc_greenlist_mask(scores, greenlist_token_ids)
assert result.tolist() == [[False, False, False, False], [False, False, True, True]]
assert result.shape == scores.shape
def test_bias_greenlist_logits():
processor = WatermarkLogitsProcessor()
scores = torch.tensor([[0.5, 0.3, 0.2, 0.8], [0.1, 0.2, 0.7, 0.9]])
green_tokens_mask = torch.tensor(
[[False, False, True, True], [False, False, False, True]]
)
greenlist_bias = 2.0
result = processor._bias_greenlist_logits(scores, green_tokens_mask, greenlist_bias)
assert np.allclose(result.tolist(), [[0.5, 0.3, 2.2, 2.8], [0.1, 0.2, 0.7, 2.9]])
assert result.shape == scores.shape
def test_call():
input_ids = [101, 2036, 3731, 102, 2003, 103]
processor = WatermarkLogitsProcessor()
scores = torch.tensor([[0.5, 0.3, 0.2, 0.8], [0.1, 0.2, 0.7, 0.9]])
result = processor(input_ids, scores)
assert result.shape == scores.shape
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/text_generation_server/cache.py | import torch
from typing import Dict, Optional, TypeVar
from text_generation_server.models.types import Batch
B = TypeVar("B", bound=Batch)
class Cache:
def __init__(self):
self.cache: Dict[int, B] = {}
def pop(self, batch_id: int) -> Optional[B]:
return self.cache.pop(batch_id, None)
def set(self, entry: B):
if entry is not None:
self.cache[entry.batch_id] = entry
def delete(self, batch_id: int):
batch = self.pop(batch_id)
if batch is not None:
del batch
if torch.cuda.is_available():
torch.cuda.empty_cache()
def clear(self):
keys = list(self.cache.keys())
for k in keys:
self.delete(k)
def __len__(self):
return len(self.cache.keys())
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/text_generation_server/cli.py | import os
import sys
import typer
from pathlib import Path
from loguru import logger
from typing import Optional
from enum import Enum
from huggingface_hub import hf_hub_download
app = typer.Typer()
class Quantization(str, Enum):
bitsandbytes = "bitsandbytes"
bitsandbytes_nf4 = "bitsandbytes-nf4"
bitsandbytes_fp4 = "bitsandbytes-fp4"
gptq = "gptq"
class Dtype(str, Enum):
float16 = "float16"
bloat16 = "bfloat16"
@app.command()
def serve(
model_id: str,
revision: Optional[str] = None,
sharded: bool = False,
quantize: Optional[Quantization] = None,
dtype: Optional[Dtype] = None,
trust_remote_code: bool = False,
uds_path: Path = "/tmp/text-generation-server",
logger_level: str = "INFO",
json_output: bool = False,
otlp_endpoint: Optional[str] = None,
):
if sharded:
assert (
os.getenv("RANK", None) is not None
), "RANK must be set when sharded is True"
assert (
os.getenv("WORLD_SIZE", None) is not None
), "WORLD_SIZE must be set when sharded is True"
assert (
os.getenv("MASTER_ADDR", None) is not None
), "MASTER_ADDR must be set when sharded is True"
assert (
os.getenv("MASTER_PORT", None) is not None
), "MASTER_PORT must be set when sharded is True"
# Remove default handler
logger.remove()
logger.add(
sys.stdout,
format="{message}",
filter="text_generation_server",
level=logger_level,
serialize=json_output,
backtrace=True,
diagnose=False,
)
# Import here after the logger is added to log potential import exceptions
from text_generation_server import server
from text_generation_server.tracing import setup_tracing
# Setup OpenTelemetry distributed tracing
if otlp_endpoint is not None:
setup_tracing(shard=os.getenv("RANK", 0), otlp_endpoint=otlp_endpoint)
# Downgrade enum into str for easier management later on
quantize = None if quantize is None else quantize.value
dtype = None if dtype is None else dtype.value
if dtype is not None and quantize is not None:
raise RuntimeError(
"Only 1 can be set between `dtype` and `quantize`, as they both decide how goes the final model."
)
server.serve(
model_id, revision, sharded, quantize, dtype, trust_remote_code, uds_path
)
@app.command()
def download_weights(
model_id: str,
revision: Optional[str] = None,
extension: str = ".safetensors",
auto_convert: bool = True,
logger_level: str = "INFO",
json_output: bool = False,
trust_remote_code: bool = False,
):
# Remove default handler
logger.remove()
logger.add(
sys.stdout,
format="{message}",
filter="text_generation_server",
level=logger_level,
serialize=json_output,
backtrace=True,
diagnose=False,
)
# Import here after the logger is added to log potential import exceptions
from text_generation_server import utils
# Test if files were already download
try:
utils.weight_files(model_id, revision, extension)
logger.info("Files are already present on the host. " "Skipping download.")
return
# Local files not found
except (utils.LocalEntryNotFoundError, FileNotFoundError):
pass
is_local_model = (Path(model_id).exists() and Path(model_id).is_dir()) or os.getenv(
"WEIGHTS_CACHE_OVERRIDE", None
) is not None
if not is_local_model:
try:
adapter_config_filename = hf_hub_download(model_id, revision=revision, filename="adapter_config.json")
utils.download_and_unload_peft(model_id, revision, trust_remote_code=trust_remote_code)
except (utils.LocalEntryNotFoundError, utils.EntryNotFoundError):
pass
# Try to download weights from the hub
try:
filenames = utils.weight_hub_files(model_id, revision, extension)
utils.download_weights(filenames, model_id, revision)
# Successfully downloaded weights
return
# No weights found on the hub with this extension
except utils.EntryNotFoundError as e:
# Check if we want to automatically convert to safetensors or if we can use .bin weights instead
if not extension == ".safetensors" or not auto_convert:
raise e
# Try to see if there are local pytorch weights
try:
# Get weights for a local model, a hub cached model and inside the WEIGHTS_CACHE_OVERRIDE
local_pt_files = utils.weight_files(model_id, revision, ".bin")
# No local pytorch weights
except utils.LocalEntryNotFoundError:
if extension == ".safetensors":
logger.warning(
f"No safetensors weights found for model {model_id} at revision {revision}. "
f"Downloading PyTorch weights."
)
# Try to see if there are pytorch weights on the hub
pt_filenames = utils.weight_hub_files(model_id, revision, ".bin")
# Download pytorch weights
local_pt_files = utils.download_weights(pt_filenames, model_id, revision)
if auto_convert:
logger.warning(
f"No safetensors weights found for model {model_id} at revision {revision}. "
f"Converting PyTorch weights to safetensors."
)
# Safetensors final filenames
local_st_files = [
p.parent / f"{p.stem.lstrip('pytorch_')}.safetensors"
for p in local_pt_files
]
try:
import transformers
import json
config_filename = hf_hub_download(model_id, revision=revision, filename="config.json")
with open(config_filename, "r") as f:
config = json.load(f)
architecture = config["architectures"][0]
class_ = getattr(transformers, architecture)
# Name for this varible depends on transformers version.
discard_names = getattr(class_, "_tied_weights_keys", [])
discard_names.extend(getattr(class_, "_keys_to_ignore_on_load_missing", []))
except Exception as e:
discard_names = []
# Convert pytorch weights to safetensors
utils.convert_files(local_pt_files, local_st_files, discard_names)
@app.command()
def quantize(
model_id: str,
output_dir: str,
revision: Optional[str] = None,
logger_level: str = "INFO",
json_output: bool = False,
trust_remote_code: bool = False,
upload_to_model_id: Optional[str] = None,
percdamp: float = 0.01,
act_order: bool = False,
):
if revision is None:
revision = "main"
download_weights(
model_id=model_id,
revision=revision,
logger_level=logger_level,
json_output=json_output,
)
from text_generation_server.utils.gptq.quantize import quantize
quantize(
model_id=model_id,
bits=4,
groupsize=128,
output_dir=output_dir,
revision=revision,
trust_remote_code=trust_remote_code,
upload_to_model_id=upload_to_model_id,
percdamp=percdamp,
act_order=act_order,
)
if __name__ == "__main__":
app()
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/text_generation_server/interceptor.py | import torch
import grpc
from google.rpc import status_pb2, code_pb2
from grpc_status import rpc_status
from grpc_interceptor.server import AsyncServerInterceptor
from loguru import logger
from typing import Callable, Any
class ExceptionInterceptor(AsyncServerInterceptor):
async def intercept(
self,
method: Callable,
request_or_iterator: Any,
context: grpc.ServicerContext,
method_name: str,
) -> Any:
try:
response = method(request_or_iterator, context)
return await response
except Exception as err:
method_name = method_name.split("/")[-1]
logger.exception(f"Method {method_name} encountered an error.")
if torch.cuda.is_available():
torch.cuda.empty_cache()
await context.abort_with_status(
rpc_status.to_status(
status_pb2.Status(code=code_pb2.INTERNAL, message=str(err))
)
)
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/text_generation_server/server.py | import asyncio
import os
import torch
from grpc import aio
from loguru import logger
from grpc_reflection.v1alpha import reflection
from pathlib import Path
from typing import List, Optional
from text_generation_server.cache import Cache
from text_generation_server.interceptor import ExceptionInterceptor
from text_generation_server.models import Model, get_model
from text_generation_server.pb import generate_pb2_grpc, generate_pb2
from text_generation_server.tracing import UDSOpenTelemetryAioServerInterceptor
class TextGenerationService(generate_pb2_grpc.TextGenerationServiceServicer):
def __init__(self, model: Model, cache: Cache, server_urls: List[str]):
self.cache = cache
self.model = model
self.server_urls = server_urls
# For some reason, inference_mode does not work well with GLOO which we use on CPU
if model.device.type == "cuda":
# Force inference mode for the lifetime of TextGenerationService
self._inference_mode_raii_guard = torch._C._InferenceMode(True)
async def Info(self, request, context):
return self.model.info
async def Health(self, request, context):
if self.model.device.type == "cuda":
torch.zeros((2, 2)).cuda()
return generate_pb2.HealthResponse()
async def ServiceDiscovery(self, request, context):
return generate_pb2.ServiceDiscoveryResponse(urls=self.server_urls)
async def ClearCache(self, request, context):
if request.HasField("id"):
self.cache.delete(request.id)
else:
self.cache.clear()
return generate_pb2.ClearCacheResponse()
async def FilterBatch(self, request, context):
batch = self.cache.pop(request.batch_id)
if batch is None:
raise ValueError(f"Batch ID {request.batch_id} not found in cache.")
filtered_batch = batch.filter(request.request_ids)
self.cache.set(filtered_batch)
return generate_pb2.FilterBatchResponse(batch=filtered_batch.to_pb())
async def Warmup(self, request, context):
batch = self.model.batch_type.from_pb(
request.batch, self.model.tokenizer, self.model.dtype, self.model.device
)
max_supported_total_tokens = self.model.warmup(batch)
return generate_pb2.WarmupResponse(
max_supported_total_tokens=max_supported_total_tokens
)
async def Prefill(self, request, context):
batch = self.model.batch_type.from_pb(
request.batch, self.model.tokenizer, self.model.dtype, self.model.device
)
generations, next_batch = self.model.generate_token(batch)
self.cache.set(next_batch)
return generate_pb2.PrefillResponse(
generations=[generation.to_pb() for generation in generations],
batch=next_batch.to_pb() if next_batch else None,
)
async def Decode(self, request, context):
if len(request.batches) == 0:
raise ValueError("Must provide at least one batch")
batches = []
for batch_pb in request.batches:
batch = self.cache.pop(batch_pb.id)
if batch is None:
raise ValueError(f"Batch ID {batch_pb.id} not found in cache.")
batches.append(batch)
if len(batches) == 0:
raise ValueError("All batches are empty")
if len(batches) > 1:
batch = self.model.batch_type.concatenate(batches)
else:
batch = batches[0]
generations, next_batch = self.model.generate_token(batch)
self.cache.set(next_batch)
return generate_pb2.DecodeResponse(
generations=[generation.to_pb() for generation in generations],
batch=next_batch.to_pb() if next_batch else None,
)
def serve(
model_id: str,
revision: Optional[str],
sharded: bool,
quantize: Optional[str],
dtype: Optional[str],
trust_remote_code: bool,
uds_path: Path,
):
async def serve_inner(
model_id: str,
revision: Optional[str],
sharded: bool = False,
quantize: Optional[str] = None,
dtype: Optional[str] = None,
trust_remote_code: bool = False,
):
unix_socket_template = "unix://{}-{}"
if sharded:
server_urls = [
unix_socket_template.format(uds_path, rank)
for rank in range(int(os.environ["WORLD_SIZE"]))
]
local_url = server_urls[int(os.environ["RANK"])]
else:
local_url = unix_socket_template.format(uds_path, 0)
server_urls = [local_url]
try:
model = get_model(
model_id, revision, sharded, quantize, dtype, trust_remote_code
)
except Exception:
logger.exception("Error when initializing model")
raise
if quantize == "gptq":
try:
# When using GPTQ, Exllama kernels need some global kernels
# For which we have the finale shapes only after the model has loaded
# This will allocate those buffers.
from text_generation_server.utils.gptq.exllama import (
create_exllama_buffers,
set_device,
)
set_device(model.device)
create_exllama_buffers()
except ImportError:
pass
server = aio.server(
interceptors=[
ExceptionInterceptor(),
UDSOpenTelemetryAioServerInterceptor(),
]
)
generate_pb2_grpc.add_TextGenerationServiceServicer_to_server(
TextGenerationService(model, Cache(), server_urls), server
)
SERVICE_NAMES = (
generate_pb2.DESCRIPTOR.services_by_name["TextGenerationService"].full_name,
reflection.SERVICE_NAME,
)
reflection.enable_server_reflection(SERVICE_NAMES, server)
server.add_insecure_port(local_url)
await server.start()
logger.info("Server started at {}".format(local_url))
try:
await server.wait_for_termination()
except KeyboardInterrupt:
logger.info("Signal received. Shutting down")
await server.stop(0)
asyncio.run(
serve_inner(model_id, revision, sharded, quantize, dtype, trust_remote_code)
)
| 0 |
hf_public_repos/text-generation-inference/server | hf_public_repos/text-generation-inference/server/text_generation_server/tracing.py | import grpc
from opentelemetry import trace
from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
from opentelemetry.instrumentation.grpc._aio_server import (
OpenTelemetryAioServerInterceptor,
)
from opentelemetry.semconv.trace import SpanAttributes
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import (
BatchSpanProcessor,
)
class UDSOpenTelemetryAioServerInterceptor(OpenTelemetryAioServerInterceptor):
def __init__(self):
super().__init__(trace.get_tracer(__name__))
def _start_span(self, handler_call_details, context, set_status_on_exception=False):
"""
Rewrite _start_span method to support Unix Domain Socket gRPC contexts
"""
# standard attributes
attributes = {
SpanAttributes.RPC_SYSTEM: "grpc",
SpanAttributes.RPC_GRPC_STATUS_CODE: grpc.StatusCode.OK.value[0],
}
# if we have details about the call, split into service and method
if handler_call_details.method:
service, method = handler_call_details.method.lstrip("/").split("/", 1)
attributes.update(
{
SpanAttributes.RPC_METHOD: method,
SpanAttributes.RPC_SERVICE: service,
}
)
# add some attributes from the metadata
metadata = dict(context.invocation_metadata())
if "user-agent" in metadata:
attributes["rpc.user_agent"] = metadata["user-agent"]
# We use gRPC over a UNIX socket
attributes.update({SpanAttributes.NET_TRANSPORT: "unix"})
return self._tracer.start_as_current_span(
name=handler_call_details.method,
kind=trace.SpanKind.SERVER,
attributes=attributes,
set_status_on_exception=set_status_on_exception,
)
def setup_tracing(shard: int, otlp_endpoint: str):
resource = Resource.create(
attributes={"service.name": f"text-generation-inference.server-{shard}"}
)
span_exporter = OTLPSpanExporter(endpoint=otlp_endpoint, insecure=True)
span_processor = BatchSpanProcessor(span_exporter)
trace.set_tracer_provider(TracerProvider(resource=resource))
trace.get_tracer_provider().add_span_processor(span_processor)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/__init__.py | import os
import torch
from loguru import logger
from transformers.configuration_utils import PretrainedConfig
from transformers.models.auto import modeling_auto
from typing import Optional
from text_generation_server.models.model import Model
from text_generation_server.models.causal_lm import CausalLM
from text_generation_server.models.flash_causal_lm import FlashCausalLM
from text_generation_server.models.bloom import BLOOMSharded
from text_generation_server.models.mpt import MPTSharded
from text_generation_server.models.seq2seq_lm import Seq2SeqLM
from text_generation_server.models.rw import RW
from text_generation_server.models.opt import OPTSharded
from text_generation_server.models.galactica import GalacticaSharded
from text_generation_server.models.santacoder import SantaCoder
from text_generation_server.models.t5 import T5Sharded
from text_generation_server.models.gpt_neox import GPTNeoxSharded
# The flag below controls whether to allow TF32 on matmul. This flag defaults to False
# in PyTorch 1.12 and later.
torch.backends.cuda.matmul.allow_tf32 = True
# The flag below controls whether to allow TF32 on cuDNN. This flag defaults to True.
torch.backends.cudnn.allow_tf32 = True
# Disable gradients
torch.set_grad_enabled(False)
__all__ = [
"Model",
"BLOOMSharded",
"CausalLM",
"FlashCausalLM",
"GalacticaSharded",
"Seq2SeqLM",
"SantaCoder",
"OPTSharded",
"T5Sharded",
"get_model",
]
FLASH_ATT_ERROR_MESSAGE = "{} requires Flash Attention enabled models."
FLASH_ATTENTION = True
try:
from text_generation_server.models.flash_rw import FlashRWSharded
from text_generation_server.models.flash_neox import FlashNeoXSharded
from text_generation_server.models.flash_llama import (
FlashLlama,
)
from text_generation_server.models.flash_santacoder import (
FlashSantacoderSharded,
)
except ImportError as e:
logger.warning(f"Could not import Flash Attention enabled models: {e}")
FLASH_ATTENTION = False
if FLASH_ATTENTION:
__all__.append(FlashNeoXSharded)
__all__.append(FlashRWSharded)
__all__.append(FlashSantacoderSharded)
__all__.append(FlashLlama)
def get_model(
model_id: str,
revision: Optional[str],
sharded: bool,
quantize: Optional[str],
dtype: Optional[str],
trust_remote_code: bool,
) -> Model:
if dtype is None:
dtype = torch.float16
elif dtype == "float16":
dtype = torch.float16
elif dtype == "bfloat16":
dtype = torch.bfloat16
else:
raise RuntimeError(f"Unknown dtype {dtype}")
if "facebook/galactica" in model_id:
return GalacticaSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if model_id.startswith("bigcode/"):
if FLASH_ATTENTION:
return FlashSantacoderSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif sharded:
raise NotImplementedError(
FLASH_ATT_ERROR_MESSAGE.format("Sharded Santacoder")
)
else:
return SantaCoder(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
config_dict, _ = PretrainedConfig.get_config_dict(
model_id, revision=revision, trust_remote_code=trust_remote_code
)
model_type = config_dict["model_type"]
if model_type == "gpt_bigcode":
if FLASH_ATTENTION:
return FlashSantacoderSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif sharded:
raise NotImplementedError(
FLASH_ATT_ERROR_MESSAGE.format("Sharded Santacoder")
)
else:
return SantaCoder(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if model_type == "bloom":
return BLOOMSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif model_type == "mpt":
return MPTSharded(
model_id, revision, quantize=quantize, trust_remote_code=trust_remote_code
)
elif model_type == "gpt_neox":
if FLASH_ATTENTION:
return FlashNeoXSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif sharded:
return GPTNeoxSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
else:
return CausalLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif model_type == "llama":
if FLASH_ATTENTION:
return FlashLlama(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif sharded:
raise NotImplementedError(FLASH_ATT_ERROR_MESSAGE.format("Sharded Llama"))
else:
return CausalLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if model_type in ["RefinedWeb", "RefinedWebModel", "falcon"]:
if sharded:
if FLASH_ATTENTION:
if config_dict.get("alibi", False):
raise NotImplementedError("sharded is not supported for this model")
return FlashRWSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
raise NotImplementedError(FLASH_ATT_ERROR_MESSAGE.format(f"Sharded Falcon"))
else:
if FLASH_ATTENTION and not config_dict.get("alibi", False):
return FlashRWSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
else:
return RW(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif model_type == "opt":
return OPTSharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
elif model_type == "t5":
return T5Sharded(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if sharded:
raise ValueError("sharded is not supported for AutoModel")
if quantize == "gptq":
raise ValueError(
"gptq quantization is not supported for AutoModel, you can try to quantize it with `text-generation-server quantize ORIGINAL_MODEL_ID NEW_MODEL_ID`"
)
elif (quantize == "bitsandbytes-fp4") or (quantize == "bitsandbytes-nf4"):
raise ValueError(
"4bit quantization is not supported for AutoModel"
)
if model_type in modeling_auto.MODEL_FOR_CAUSAL_LM_MAPPING_NAMES:
return CausalLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if model_type in modeling_auto.MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING_NAMES:
return Seq2SeqLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
auto_map = config_dict.get("auto_map", None)
if trust_remote_code and auto_map is not None:
if "AutoModelForCausalLM" in auto_map.keys():
return CausalLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
if "AutoModelForSeq2SeqLM" in auto_map.keys():
return Seq2SeqLM(
model_id,
revision,
quantize=quantize,
dtype=dtype,
trust_remote_code=trust_remote_code,
)
raise ValueError(f"Unsupported model type {model_type}")
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/bloom.py | import torch
import torch.distributed
from typing import Optional, Type
from transformers import (
AutoTokenizer,
AutoConfig,
PreTrainedTokenizerBase,
)
from text_generation_server.models.custom_modeling.bloom_modeling import (
BloomForCausalLM,
)
from text_generation_server.models import CausalLM
from text_generation_server.models.causal_lm import CausalLMBatch
from text_generation_server.pb import generate_pb2
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
class BloomCausalLMBatch(CausalLMBatch):
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "CausalLMBatch":
batch = super().from_pb(pb=pb, tokenizer=tokenizer, dtype=dtype, device=device)
batch.keys_head_dim_last = False
return batch
class BLOOMSharded(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
slow_but_exact=False,
tp_parallel=True,
trust_remote_code=trust_remote_code,
)
config.pad_token_id = 3
config.quantize = quantize
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames, device=device, dtype=dtype, process_group=self.process_group
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = BloomForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
@property
def batch_type(self) -> Type[CausalLMBatch]:
return BloomCausalLMBatch
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
):
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
use_cache=True,
)
logits = outputs.logits
return logits, outputs.past_key_values
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/causal_lm.py | import torch
import inspect
from dataclasses import dataclass
from opentelemetry import trace
from transformers import AutoTokenizer, AutoModelForCausalLM, PreTrainedTokenizerBase
from typing import Optional, Tuple, List, Type, Dict
from text_generation_server.models import Model
from text_generation_server.models.types import (
Batch,
PrefillTokens,
Generation,
GeneratedText,
)
from text_generation_server.pb import generate_pb2
from text_generation_server.utils import NextTokenChooser, StoppingCriteria, Sampling
tracer = trace.get_tracer(__name__)
@dataclass
class CausalLMBatch(Batch):
batch_id: int
requests: List[generate_pb2.Request]
requests_idx_mapping: Dict[int, int]
# Decoder values
input_ids: torch.Tensor
attention_mask: torch.Tensor
position_ids: torch.Tensor
past_key_values: Optional[List[Tuple]]
# All tokens
all_input_ids: List[torch.Tensor]
# Lengths of all generations present in the batch
input_lengths: List[int]
prefix_offsets: List[int]
read_offsets: List[int]
# Generation helpers
next_token_choosers: List[NextTokenChooser]
stopping_criterias: List[StoppingCriteria]
# Metadata used for padding
max_input_length: int
padding_right_offset: int
# Maximum number of tokens this batch will grow to
max_tokens: int
# Past metadata
keys_head_dim_last: bool = True
def to_pb(self) -> generate_pb2.CachedBatch:
return generate_pb2.CachedBatch(
id=self.batch_id,
request_ids=[r.id for r in self.requests],
size=len(self),
max_tokens=self.max_tokens,
)
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "CausalLMBatch":
inputs = []
next_token_choosers = []
stopping_criterias = []
prefix_offsets = []
read_offsets = []
requests_idx_mapping = {}
# Parse batch
max_truncation = 0
padding_right_offset = 0
max_decode_tokens = 0
for i, r in enumerate(pb.requests):
requests_idx_mapping[r.id] = i
inputs.append(r.inputs)
next_token_choosers.append(NextTokenChooser.from_pb(r.parameters, device))
stopping_criteria = StoppingCriteria.from_pb(
r.stopping_parameters, tokenizer
)
stopping_criterias.append(stopping_criteria)
max_truncation = max(max_truncation, r.truncate)
max_decode_tokens += stopping_criteria.max_new_tokens
padding_right_offset = max(
padding_right_offset, stopping_criteria.max_new_tokens
)
tokenized_inputs = tokenizer(
inputs,
return_tensors="pt",
padding=True,
return_token_type_ids=False,
truncation=True,
max_length=max_truncation,
).to(device)
for _ in pb.requests:
input_len = tokenized_inputs["input_ids"].shape[1]
prefix_offsets.append(input_len - 5)
read_offsets.append(input_len)
input_lengths = tokenized_inputs["attention_mask"].sum(1)
max_input_length = input_lengths.max()
input_ids = tokenized_inputs["input_ids"]
# Allocate maximum attention_mask
attention_mask = input_ids.new_zeros(
(pb.size, max_input_length + padding_right_offset)
)
# Copy tokenizer attention_mask into fully allocated attention_mask
attention_mask[:, :max_input_length] = tokenized_inputs["attention_mask"]
position_ids = tokenized_inputs["attention_mask"].long().cumsum(-1) - 1
position_ids.masked_fill_(tokenized_inputs["attention_mask"] == 0, 1)
all_input_ids = tokenized_inputs["input_ids"].T.split(1, dim=1)
max_tokens = len(inputs) * (max_input_length + max_decode_tokens)
return cls(
batch_id=pb.id,
requests=pb.requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=None,
all_input_ids=list(all_input_ids),
input_lengths=input_lengths.tolist(),
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
next_token_choosers=next_token_choosers,
stopping_criterias=stopping_criterias,
max_input_length=max_input_length.item(),
padding_right_offset=padding_right_offset,
max_tokens=max_tokens,
)
@tracer.start_as_current_span("filter")
def filter(self, request_ids: List[int]) -> Optional["CausalLMBatch"]:
if len(request_ids) == 0:
raise ValueError("Batch must have at least one request")
if len(request_ids) == len(self):
return self
keep_indices = []
# New values after filtering
requests_idx_mapping = {}
requests = []
input_lengths = []
prefix_offsets = []
read_offsets = []
all_input_ids = []
max_input_length = 0
next_token_choosers = []
stopping_criterias = []
total_remaining_decode_tokens = 0
new_padding_right_offset = 0
for i, request_id in enumerate(request_ids):
idx = self.requests_idx_mapping[request_id]
requests_idx_mapping[request_id] = i
keep_indices.append(idx)
requests.append(self.requests[idx])
prefix_offsets.append(self.prefix_offsets[idx])
read_offsets.append(self.read_offsets[idx])
all_input_ids.append(self.all_input_ids[idx])
request_input_length = self.input_lengths[idx]
input_lengths.append(request_input_length)
max_input_length = max(max_input_length, request_input_length)
next_token_choosers.append(self.next_token_choosers[idx])
stopping_criteria = self.stopping_criterias[idx]
stopping_criterias.append(stopping_criteria)
remaining_decode_tokens = (
stopping_criteria.max_new_tokens - stopping_criteria.current_tokens
)
total_remaining_decode_tokens += remaining_decode_tokens
new_padding_right_offset = max(
new_padding_right_offset, remaining_decode_tokens
)
# Apply indices to input_ids, attention mask, past key values and other items that need to be cached
input_ids = self.input_ids[keep_indices]
position_ids = self.position_ids[keep_indices]
self.attention_mask = self.attention_mask[
keep_indices,
-(self.padding_right_offset + max_input_length) : (
self.attention_mask.shape[1] - self.padding_right_offset
)
+ new_padding_right_offset,
]
# Ensure that past_key_values tensors can be updated in-place
if type(self.past_key_values[0]) == tuple:
self.past_key_values = [list(layer) for layer in self.past_key_values]
# Update tensors in-place to allow incremental garbage collection
past_kv_length = max_input_length - 1
for layer in self.past_key_values:
past_keys, past_values = layer
if len(past_keys.shape) == 3:
# Force past to be of dim [self_size, num_heads, ...] for easy indexing
past_keys = past_keys.view(len(self), -1, *past_keys.shape[-2:])
past_values = past_values.view(len(self), -1, *past_values.shape[-2:])
if self.keys_head_dim_last:
layer[0] = past_keys[keep_indices, :, -past_kv_length:, :]
else:
layer[0] = past_keys[keep_indices, :, :, -past_kv_length:]
del past_keys
layer[1] = past_values[keep_indices, :, -past_kv_length:, :]
del past_values
max_tokens = len(request_ids) * max_input_length + total_remaining_decode_tokens
self.requests = requests
self.requests_idx_mapping = requests_idx_mapping
self.input_ids = input_ids
self.position_ids = position_ids
self.all_input_ids = all_input_ids
self.input_lengths = input_lengths
self.prefix_offsets = prefix_offsets
self.read_offsets = read_offsets
self.next_token_choosers = next_token_choosers
self.stopping_criterias = stopping_criterias
self.max_input_length = max_input_length
self.padding_right_offset = new_padding_right_offset
self.max_tokens = max_tokens
return self
@classmethod
@tracer.start_as_current_span("concatenate")
def concatenate(cls, batches: List["CausalLMBatch"]) -> "CausalLMBatch":
# Used for padding
total_batch_size = 0
max_input_length = 0
padding_right_offset = 0
for batch in batches:
total_batch_size += len(batch)
max_input_length = max(max_input_length, batch.max_input_length)
padding_right_offset = max(padding_right_offset, batch.padding_right_offset)
# Batch attributes
requests = []
requests_idx_mapping = {}
input_lengths = []
prefix_offsets = []
read_offsets = []
all_input_ids = []
next_token_choosers = []
stopping_criterias = []
max_tokens = 0
# Batch tensors
input_ids = None
attention_mask = None
position_ids = None
past_key_values = []
# Used for slicing correctly inside the tensors
# Equivalent to a cumsum on batch sizes
start_index = 0
for i, batch in enumerate(batches):
requests.extend(batch.requests)
input_lengths.extend(batch.input_lengths)
prefix_offsets.extend(batch.prefix_offsets)
read_offsets.extend(batch.read_offsets)
all_input_ids.extend(batch.all_input_ids)
next_token_choosers.extend(batch.next_token_choosers)
stopping_criterias.extend(batch.stopping_criterias)
if i == 0:
requests_idx_mapping = batch.requests_idx_mapping
else:
# We need to offset the mapping for each batch by the cumulative batch size
for k, v in batch.requests_idx_mapping.items():
requests_idx_mapping[k] = v + start_index
# Slicing end index for this batch
end_index = start_index + len(batch)
# We only concatenate batches that did at least one step
if batch.past_key_values is None:
raise ValueError("only concatenate prefilled batches")
# Create empty tensor
# input_ids is always of shape [batch_size, 1]
# We do not need to pad it
if input_ids is None:
input_ids = batch.input_ids.new_empty((total_batch_size, 1))
# Copy to correct indices
input_ids[start_index:end_index] = batch.input_ids
# Create padded tensor
if attention_mask is None:
attention_mask = batch.attention_mask.new_zeros(
(total_batch_size, max_input_length + padding_right_offset),
)
# We need to slice the attention mask to remove padding from previous steps
# and to remove unused allocated space
left_offset = max_input_length - batch.max_input_length
batch_left_offset = (
batch.attention_mask.shape[1]
- batch.max_input_length
- batch.padding_right_offset
)
attention_mask[
start_index:end_index,
left_offset:-padding_right_offset,
] = batch.attention_mask[
:,
batch_left_offset : -batch.padding_right_offset,
]
# Create empty tensor
# position_ids is always of shape [batch_size, 1]
if position_ids is None:
position_ids = batch.position_ids.new_empty((total_batch_size, 1))
position_ids[start_index:end_index] = batch.position_ids
# Shenanigans to get dimensions because BLOOM outputs a past with a different shape
# BLOOM Keys: [batch_size * num_heads, head_dim, seq_length]
# BLOOM Values: [batch_size * num_heads, seq_length, head_dim]
# And ensure that we can update tensors in-place
if type(batch.past_key_values[0]) == tuple:
batch.past_key_values = [
[t.view(len(batch), -1, *t.shape[-2:]) for t in layer]
for layer in batch.past_key_values
]
elif len(batch.past_key_values[0][0].shape) == 3:
for layer in batch.past_key_values:
for k, t in enumerate(layer):
layer[k] = t.view(len(batch), -1, *t.shape[-2:])
# Add eventual padding tokens that were added while concatenating
max_tokens += batch.max_tokens + (
max_input_length - batch.max_input_length
) * len(batch)
start_index = end_index
first_past_kvs = batches[0].past_key_values
_, num_heads, padded_sequence_length, head_dim = first_past_kvs[0][1].shape
padded_past_values_shape = (
total_batch_size,
num_heads,
max_input_length - 1,
head_dim,
)
if batches[0].keys_head_dim_last:
padded_past_keys_shape = padded_past_values_shape
else:
# seq_length is last for BLOOM
padded_past_keys_shape = (
total_batch_size,
num_heads,
head_dim,
max_input_length - 1,
)
# Iterate over attention layers
# Concatenate past key values layer by layer to allow incremental garbage collection
for j in range(len(first_past_kvs)):
padded_past_keys = first_past_kvs[j][0].new_zeros(padded_past_keys_shape)
start_index = 0
for batch in batches:
past_keys = batch.past_key_values[j][0]
# Clear reference to the original tensor
batch.past_key_values[j][0] = None
# Slicing end index for this batch
end_index = start_index + len(batch)
# We slice the keys to remove the padding from previous batches
past_seq_len = batch.max_input_length - 1
if batch.keys_head_dim_last:
padded_past_keys[
start_index:end_index, :, -past_seq_len:, :
] = past_keys[:, :, -past_seq_len:, :]
else:
# BLOOM case
padded_past_keys[
start_index:end_index, :, :, -past_seq_len:
] = past_keys[:, :, :, -past_seq_len:]
del past_keys
start_index = end_index
padded_past_values = first_past_kvs[j][1].new_zeros(
padded_past_values_shape
)
start_index = 0
for batch in batches:
past_values = batch.past_key_values[j][1]
# Clear reference to the original tensor
batch.past_key_values[j][1] = None
# Slicing end index for this batch
end_index = start_index + len(batch)
# We slice the past values to remove the padding from previous batches
past_seq_len = batch.max_input_length - 1
padded_past_values[
start_index:end_index, :, -past_seq_len:, :
] = past_values[:, :, -past_seq_len:, :]
del past_values
# Update values
start_index = end_index
past_key_values.append([padded_past_keys, padded_past_values])
return cls(
batch_id=batches[0].batch_id,
requests=requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
all_input_ids=all_input_ids,
input_lengths=input_lengths,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
next_token_choosers=next_token_choosers,
stopping_criterias=stopping_criterias,
max_input_length=max_input_length,
padding_right_offset=padding_right_offset,
keys_head_dim_last=batches[0].keys_head_dim_last,
max_tokens=max_tokens,
)
def __len__(self):
return len(self.requests)
class CausalLM(Model):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
if torch.cuda.is_available():
device = torch.device("cuda")
dtype = torch.float16 if dtype is None else dtype
else:
if quantize:
raise ValueError("quantization is not available on CPU")
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
model = AutoModelForCausalLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=dtype,
device_map="auto"
if torch.cuda.is_available() and torch.cuda.device_count() > 1
else None,
load_in_8bit=quantize == "bitsandbytes",
trust_remote_code=trust_remote_code,
)
if torch.cuda.is_available() and torch.cuda.device_count() == 1:
model = model.cuda()
if tokenizer.pad_token_id is None:
if model.config.pad_token_id is not None:
tokenizer.pad_token_id = model.config.pad_token_id
elif model.config.eos_token_id is not None:
tokenizer.pad_token_id = model.config.eos_token_id
elif tokenizer.eos_token_id is not None:
tokenizer.pad_token_id = tokenizer.eos_token_id
else:
tokenizer.add_special_tokens({"pad_token": "[PAD]"})
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
)
@property
def batch_type(self) -> Type[CausalLMBatch]:
return CausalLMBatch
def decode(self, generated_ids: List[int]) -> str:
return self.tokenizer.decode(
generated_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
) -> Tuple[torch.Tensor, List[Tuple[torch.Tensor, torch.Tensor]]]:
# Model Forward
kwargs = {
"input_ids": input_ids,
"attention_mask": attention_mask,
"past_key_values": past_key_values,
"use_cache": True,
"return_dict": True,
}
if self.has_position_ids:
kwargs["position_ids"] = position_ids
outputs = self.model.forward(**kwargs)
return outputs.logits, outputs.past_key_values
@tracer.start_as_current_span("generate_token")
def generate_token(
self, batch: CausalLMBatch
) -> Tuple[List[Generation], Optional[CausalLMBatch]]:
# slice the attention mask to the correct shape
attention_mask = batch.attention_mask[:, : -batch.padding_right_offset]
logits, past = self.forward(
batch.input_ids,
attention_mask,
batch.position_ids,
batch.past_key_values,
)
# Results
generations: List[Generation] = []
stopped = True
# Zipped iterator
iterator = zip(
batch.requests,
batch.input_lengths,
batch.prefix_offsets,
batch.read_offsets,
logits,
batch.next_token_choosers,
batch.stopping_criterias,
batch.all_input_ids,
)
# For each member of the batch
for i, (
request,
input_length,
prefix_offset,
read_offset,
logits,
next_token_chooser,
stopping_criteria,
all_input_ids,
) in enumerate(iterator):
# Select next token
next_token_id, logprobs = next_token_chooser(
all_input_ids.view(1, -1), logits[-1:, :]
)
# Append next token to all tokens
all_input_ids = torch.cat([all_input_ids, next_token_id])
new_input_length = input_length + 1
# Generated token
next_token_logprob = logprobs[-1, next_token_id]
next_token_id_squeezed = next_token_id.squeeze()
next_token_text, prefix_offset, read_offset = self.decode_token(
all_input_ids[:, 0], prefix_offset, read_offset
)
# Evaluate stopping criteria
stop, reason = stopping_criteria(
next_token_id_squeezed,
next_token_text,
)
if not stop:
stopped = False
# Shard generations
# All generations will be appended in the rust sharded client
if i % self.world_size == self.rank:
if stop:
# Decode generated tokens
output_text = self.decode(
all_input_ids[-stopping_criteria.current_tokens :, 0]
)
# Get seed
if isinstance(next_token_chooser.choice, Sampling):
seed = next_token_chooser.choice.seed
else:
seed = None
generated_text = GeneratedText(
output_text, stopping_criteria.current_tokens, reason, seed
)
else:
generated_text = None
# Prefill
if stopping_criteria.current_tokens == 1 and request.prefill_logprobs:
# Remove generated token to only have prefill and add nan for first prompt token
prefill_logprobs = [float("nan")] + torch.log_softmax(
logits, -1
).gather(1, all_input_ids[1:]).squeeze(1)[
-new_input_length:-1
].tolist()
prefill_token_ids = all_input_ids[-new_input_length:-1]
prefill_texts = self.tokenizer.batch_decode(
prefill_token_ids,
clean_up_tokenization_spaces=False,
skip_special_tokens=False,
)
prefill_tokens = PrefillTokens(
prefill_token_ids, prefill_logprobs, prefill_texts
)
else:
prefill_tokens = None
generation = Generation(
request.id,
prefill_tokens,
next_token_id_squeezed,
next_token_logprob,
next_token_text,
next_token_id_squeezed.item() in self.all_special_ids,
generated_text,
)
generations.append(generation)
# Update values
batch.input_ids[i, 0] = next_token_id
batch.all_input_ids[i] = all_input_ids
batch.input_lengths[i] = new_input_length
batch.prefix_offsets[i] = prefix_offset
batch.read_offsets[i] = read_offset
batch.max_input_length = max(batch.max_input_length, new_input_length)
# We finished all generations in the batch; there is no next batch
if stopped:
return generations, None
# Slice unused values from prefill
batch.input_ids = batch.input_ids[:, :1]
# Update attention_mask as we added a new token to input_ids
batch.attention_mask[:, -batch.padding_right_offset] = 1
# Decrease right offset
batch.padding_right_offset -= 1
# Update position_ids
batch.position_ids = batch.position_ids[:, -1:] + 1
# Update past key values
batch.past_key_values = past
return generations, batch
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/flash_causal_lm.py | import math
import itertools
import torch
import torch.distributed
import numpy as np
from dataclasses import dataclass
from opentelemetry import trace
from transformers import PreTrainedTokenizerBase
from typing import Optional, Tuple, List, Type, Union, Dict
from text_generation_server.models import Model
from text_generation_server.models.types import (
Batch,
PrefillTokens,
Generation,
GeneratedText,
)
from text_generation_server.pb import generate_pb2
from text_generation_server.utils import StoppingCriteria, HeterogeneousNextTokenChooser
from text_generation_server.utils.dist import MEMORY_FRACTION
tracer = trace.get_tracer(__name__)
BLOCK_SIZE = 16
# Will be set in warmup
CACHE_MANAGER: Optional["CacheManager"] = None
class CacheManager:
def __init__(
self,
num_blocks: int,
num_layers: int,
num_heads: int,
head_size: int,
dtype: torch.dtype,
device: torch.device,
):
self.block_size = BLOCK_SIZE
self.num_blocks = num_blocks
element_size = torch.tensor([], dtype=dtype).element_size()
x = self.block_size // element_size
self.kv_cache = [
(
torch.empty(
(num_blocks, num_heads, head_size // x, self.block_size, x),
dtype=dtype,
device=device,
),
torch.empty(
(num_blocks, num_heads, head_size, self.block_size),
dtype=dtype,
device=device,
),
)
for _ in range(num_layers)
]
self.free_block_mask = torch.ones(num_blocks, dtype=torch.int32, device="cpu")
self.slots = torch.arange(
0, num_blocks * self.block_size, dtype=torch.int32
).view(num_blocks, self.block_size)
def allocate(self, batch: "FlashCausalLMBatch"):
# Get free blocks indices by finding values in mask that are not set to 0
free_block_indices = self.free_block_mask.nonzero()
assert (
len(free_block_indices) >= batch.blocks
), f"Out of available cache blocks: asked {batch.blocks}, only {len(free_block_indices)} free blocks"
# Slice by the number of required blocks
block_indices = free_block_indices[: batch.blocks]
block_indices = block_indices.flatten()
# Padded block tables
block_tables_tensor = torch.zeros(
(len(batch), batch.max_blocks), dtype=torch.int32
)
# Allocate paged attention blocks
cumulative_blocks = 0
slots = []
block_tables = []
for i, (needed_blocks, needed_slots) in enumerate(batch.needed_blocks_slots):
# Get allocated blocks for this sequence
allocated_blocks = block_indices[
cumulative_blocks : cumulative_blocks + needed_blocks
]
# Get slots for the allocated blocks
allocated_slots = self.slots[allocated_blocks].flatten()[:needed_slots]
slots.append(allocated_slots)
block_tables.append(allocated_blocks.tolist())
block_tables_tensor[i, :needed_blocks] = allocated_blocks
cumulative_blocks += needed_blocks
batch.needed_blocks_slots = None
batch.block_tables = block_tables
batch.block_tables_tensor = block_tables_tensor.to(batch.input_ids.device)
batch.slots = torch.concat(slots).to(batch.input_ids.device)
# Allocate the required number of blocks by setting the mask to 0
self.free_block_mask[block_indices] = 0
def free(self, block_indices: Optional[List[int]]):
if block_indices is not None and block_indices:
# Reset mask
self.free_block_mask[block_indices] = 1
@dataclass
class FlashCausalLMBatch(Batch):
batch_id: int
requests: List[generate_pb2.Request]
# request id -> idx in list mapping
requests_idx_mapping: Dict[int, int]
# Decoder values
input_ids: torch.Tensor
position_ids: torch.Tensor
# Flash Attention values
# tensor of length b containing the cumulative sequence lengths of the sequences in the batch, only used in prefill
cu_seqlen_prefill: Optional[torch.Tensor]
# Paged Attention values
# Set when creating the batch
# CPU tensor of length b indicating the start of each sequence in slots
start_slots: torch.Tensor
# tensor of indices of the currently used slots, length = \sum_{i=0}^{b} s_i in prefill, length = b in decode
slot_indices: torch.Tensor
# List of tuple of ints representing the number of blocks and slots needed by each sequence
needed_blocks_slots: Optional[List[Tuple[int, int]]]
# Set in prefill by the CacheManager
# list of length b of list of length s_i // block_size
block_tables: Optional[List[List[int]]]
# tensor of size [b, max_seqlen // block_size] holding the paged attention block tables for all sequences
block_tables_tensor: Optional[torch.Tensor]
# tensor of length \sum_{i=0}^{b} max_s_i holding the paged attention slots for all sequences
slots: Optional[torch.Tensor]
max_seqlen: int
# Prefill metadata tensors to efficiently compute logprobs
prefill_head_indices: Optional[torch.Tensor]
prefill_next_token_indices: Optional[torch.tensor]
prefill_cu_outlens: Optional[List[int]]
# All tokens
all_input_ids: List[List[int]]
all_input_ids_tensor: torch.Tensor
# Lengths of all generations present in the batch
input_lengths: List[int]
input_lengths_tensor: torch.Tensor
prefix_offsets: List[Optional[int]]
read_offsets: List[Optional[int]]
# Generation helpers
next_token_chooser: HeterogeneousNextTokenChooser
stopping_criterias: List[StoppingCriteria]
# Number of blocks in this batch
blocks: int
# Maximum number of blocks
max_blocks: int
def to_pb(self) -> generate_pb2.CachedBatch:
return generate_pb2.CachedBatch(
id=self.batch_id,
request_ids=[r.id for r in self.requests],
size=len(self),
max_tokens=self.blocks * BLOCK_SIZE,
)
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "FlashCausalLMBatch":
batch_inputs = []
max_truncation = 0
for r in pb.requests:
batch_inputs.append(r.inputs)
max_truncation = max(max_truncation, r.truncate)
batch_tokenized_inputs = tokenizer(
batch_inputs, truncation=True, max_length=max_truncation
)["input_ids"]
position_ids = []
cu_seqlen_prefill = [0]
needed_blocks_slots = []
start_slots = []
slot_indices = []
input_lengths = []
prefix_offsets = []
read_offsets = []
all_input_ids = []
requests_idx_mapping = {}
all_prefill_logprobs = True
no_prefill_logprobs = True
prefill_head_indices = []
prefill_next_token_indices = []
prefill_cu_outlens = [0]
next_token_chooser_parameters = []
stopping_criterias = []
# Cumulative length
cumulative_length = 0
cumulative_max_length = 0
prefill_out_cumulative_length = 0
blocks = 0
max_seqlen = 0
max_length = 0
max_blocks = 0
# Parse batch
for i, (r, tokenized_input) in enumerate(
zip(pb.requests, batch_tokenized_inputs)
):
# request id -> idx in list mapping
requests_idx_mapping[r.id] = i
tokenized_input = tokenized_input[-r.truncate :]
input_length = len(tokenized_input)
input_lengths.append(input_length)
prefix_offsets.append(input_length - 5)
read_offsets.append(input_length)
all_input_ids.append(tokenized_input)
# Position ids
request_position_ids = torch.arange(0, input_length, dtype=torch.int32)
position_ids.append(request_position_ids)
# Add cumulative lengths of all previous inputs
cu_seqlen_prefill.append(cumulative_length + input_length)
next_token_chooser_parameters.append(r.parameters)
stopping_criteria = StoppingCriteria.from_pb(
r.stopping_parameters, tokenizer
)
max_new_tokens = stopping_criteria.max_new_tokens
stopping_criterias.append(stopping_criteria)
# Paged attention
# Remove one as the first token des not have a past
total_tokens = input_length + max_new_tokens - 1
needed_blocks = math.ceil(total_tokens / BLOCK_SIZE)
blocks += needed_blocks
needed_blocks_slots.append((needed_blocks, total_tokens))
start_slots.append(cumulative_max_length)
request_slot_indices = torch.arange(
cumulative_max_length,
cumulative_max_length + input_length,
dtype=torch.int64,
)
slot_indices.append(request_slot_indices)
all_prefill_logprobs = all_prefill_logprobs and r.prefill_logprobs
no_prefill_logprobs = no_prefill_logprobs and not r.prefill_logprobs
if r.prefill_logprobs:
prefill_head_indices.append(request_position_ids + cumulative_length)
prefill_next_token_indices.append(
prefill_out_cumulative_length + input_length - 1
)
prefill_cu_outlens.append(prefill_out_cumulative_length + input_length)
prefill_out_cumulative_length += input_length
else:
prefill_head_indices.append(
torch.tensor(
[cumulative_length + input_length - 1], dtype=torch.int32
)
)
prefill_next_token_indices.append(prefill_out_cumulative_length)
prefill_cu_outlens.append(prefill_out_cumulative_length + 1)
prefill_out_cumulative_length += 1
# Update
cumulative_length += input_length
cumulative_max_length += total_tokens
max_seqlen = max(max_seqlen, input_length)
max_blocks = max(max_blocks, needed_blocks)
max_length = max(max_length, input_length + max_new_tokens)
next_token_chooser = HeterogeneousNextTokenChooser.from_pb(
next_token_chooser_parameters, dtype, device
)
start_slots = torch.tensor(start_slots, dtype=torch.int64)
# Padded all_input_ids_tensor
all_input_ids_tensor = np.zeros(
(len(all_input_ids), max_length), dtype=np.int64
)
for i, input_ids in enumerate(all_input_ids):
all_input_ids_tensor[i, : len(input_ids)] = input_ids
# Create tensors on device
all_input_ids_tensor = torch.tensor(
all_input_ids_tensor, dtype=torch.int64, device=device
)
if len(pb.requests) > 1:
input_ids = np.concatenate(all_input_ids, dtype=np.int64)
position_ids = torch.cat(position_ids)
slot_indices = torch.cat(slot_indices)
else:
input_ids = all_input_ids[0]
position_ids = position_ids[0]
slot_indices = slot_indices[0]
cu_seqlen_prefill = torch.tensor(
cu_seqlen_prefill, device=device, dtype=torch.int32
)
position_ids = position_ids.to(device)
slot_indices = slot_indices.to(device)
input_ids = torch.tensor(input_ids, dtype=torch.int64, device=device)
input_lengths_tensor = torch.tensor(
input_lengths, dtype=torch.int32, device=device
)
if all_prefill_logprobs:
prefill_head_indices = None
prefill_next_token_indices = cu_seqlen_prefill[1:] - 1
elif no_prefill_logprobs:
prefill_head_indices = cu_seqlen_prefill[1:] - 1
prefill_next_token_indices = None
else:
prefill_head_indices = torch.tensor(
torch.cat(prefill_head_indices), dtype=torch.int64, device=device
)
prefill_next_token_indices = torch.tensor(
prefill_next_token_indices, dtype=torch.int64, device=device
)
return cls(
batch_id=pb.id,
requests=pb.requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
position_ids=position_ids,
cu_seqlen_prefill=cu_seqlen_prefill,
start_slots=start_slots,
slot_indices=slot_indices,
needed_blocks_slots=needed_blocks_slots,
block_tables=None,
block_tables_tensor=None,
slots=None,
max_seqlen=max_seqlen,
prefill_head_indices=prefill_head_indices,
prefill_next_token_indices=prefill_next_token_indices,
prefill_cu_outlens=prefill_cu_outlens,
input_lengths=input_lengths,
input_lengths_tensor=input_lengths_tensor,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
all_input_ids=all_input_ids,
all_input_ids_tensor=all_input_ids_tensor,
next_token_chooser=next_token_chooser,
stopping_criterias=stopping_criterias,
blocks=blocks,
max_blocks=max_blocks,
)
@tracer.start_as_current_span("filter")
def filter(self, request_ids: List[int]) -> "FlashCausalLMBatch":
if len(request_ids) == 0:
raise ValueError("Batch must have at least one request")
# We assume that if len(requests) == len(self) then the requests are the same
if len(request_ids) == len(self):
return self
device = self.input_ids.device
# New values after filtering
requests_idx_mapping = {}
# Used to index into tensors
indices = []
# slots to keep after filtering
slot_filtering_indices = torch.zeros(
self.slots.shape[0], dtype=torch.bool, device=device
)
# Create on CPU to only move to GPU once instead of at every copy
slot_indices = torch.empty(len(request_ids), dtype=torch.int64)
max_seqlen = 0
requests = []
start_slots = []
block_tables = []
all_input_ids = []
input_lengths = []
prefix_offsets = []
read_offsets = []
stopping_criterias = []
blocks = 0
max_blocks = 0
# Cumulative length
cumulative_max_length = 0
for i, request_id in enumerate(request_ids):
idx = self.requests_idx_mapping[request_id]
indices.append(idx)
requests_idx_mapping[request_id] = i
requests.append(self.requests[idx])
# Get length
request_input_length = self.input_lengths[idx]
max_seqlen = max(max_seqlen, request_input_length)
all_input_ids.append(self.all_input_ids[idx])
input_lengths.append(request_input_length)
prefix_offsets.append(self.prefix_offsets[idx])
read_offsets.append(self.read_offsets[idx])
stopping_criteria = self.stopping_criterias[idx]
stopping_criterias.append(stopping_criteria)
remaining_tokens = (
stopping_criteria.max_new_tokens - stopping_criteria.current_tokens
)
request_block_table = self.block_tables[idx]
blocks += len(request_block_table)
block_tables.append(request_block_table)
start_slots.append(cumulative_max_length)
# Copy to tensor (CPU)
slot_indices[i] = cumulative_max_length + request_input_length - 1
# Set slice
slot_filtering_indices[
self.start_slots[idx] : self.start_slots[idx]
+ request_input_length
+ remaining_tokens
- 1
] = True
cumulative_max_length += request_input_length + remaining_tokens - 1
max_blocks = max(max_blocks, len(request_block_table))
global CACHE_MANAGER
block_indices_to_free = []
# Iterate on all requests
for i, r in enumerate(self.requests):
# Filter requests that are not part of the new batch
if r.id not in requests_idx_mapping.keys():
block_indices_to_free.extend(self.block_tables[i])
# Free blocks
CACHE_MANAGER.free(block_indices_to_free)
# Needed to avoid dropping blocks when the batches will go out of scope
self.block_tables = None
# Index into tensors
input_ids = self.input_ids[indices]
position_ids = self.position_ids[indices]
all_input_ids_tensor = self.all_input_ids_tensor[indices]
block_tables_tensor = self.block_tables_tensor[indices]
input_lengths_tensor = self.input_lengths_tensor[indices]
slots = self.slots[slot_filtering_indices]
next_token_chooser = self.next_token_chooser.filter(indices)
start_slots = torch.tensor(start_slots, dtype=torch.int64)
# Move to GPU now that we have the whole tensor
slot_indices = slot_indices.to(device)
return FlashCausalLMBatch(
batch_id=self.batch_id,
requests=requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
position_ids=position_ids,
cu_seqlen_prefill=None,
start_slots=start_slots,
slot_indices=slot_indices,
needed_blocks_slots=None,
block_tables=block_tables,
block_tables_tensor=block_tables_tensor,
slots=slots,
max_seqlen=max_seqlen,
prefill_head_indices=None,
prefill_next_token_indices=None,
prefill_cu_outlens=None,
input_lengths=input_lengths,
input_lengths_tensor=input_lengths_tensor,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
all_input_ids=all_input_ids,
all_input_ids_tensor=all_input_ids_tensor,
next_token_chooser=next_token_chooser,
stopping_criterias=stopping_criterias,
blocks=blocks,
max_blocks=max_blocks,
)
@classmethod
@tracer.start_as_current_span("concatenate")
def concatenate(cls, batches: List["FlashCausalLMBatch"]) -> "FlashCausalLMBatch":
# Batch attributes
requests = []
requests_idx_mapping = {}
blocks = 0
total_batch_size = 0
total_slots = 0
max_blocks = 0
max_length = 0
max_seqlen = 0
for b in batches:
total_batch_size += len(b)
total_slots += len(b.slots)
blocks += b.blocks
max_blocks = max(max_blocks, b.max_blocks)
max_seqlen = max(max_seqlen, b.max_seqlen)
max_length = max(
max_length,
max(
input_length
+ stopping_criteria.max_new_tokens
- stopping_criteria.current_tokens
for input_length, stopping_criteria in zip(
b.input_lengths, b.stopping_criterias
)
),
)
input_ids = batches[0].input_ids.new_empty(total_batch_size)
position_ids = batches[0].position_ids.new_empty(total_batch_size)
slots = batches[0].slots.new_empty(total_slots)
slot_indices = batches[0].slot_indices.new_empty(total_batch_size)
input_lengths_tensor = batches[0].input_lengths_tensor.new_empty(
total_batch_size
)
block_tables_tensor = batches[0].block_tables_tensor.new_zeros(
(total_batch_size, max_blocks)
)
all_input_ids_tensor = batches[0].all_input_ids_tensor.new_zeros(
(total_batch_size, max_length)
)
start_slots = []
block_tables = []
all_input_ids = []
input_lengths = []
prefix_offsets = []
read_offsets = []
next_token_chooser_parameters = []
stopping_criterias = []
# Cumulative length
cumulative_batch_size = 0
cumulative_slots = 0
for i, batch in enumerate(batches):
requests.extend(batch.requests)
if i == 0:
requests_idx_mapping = batch.requests_idx_mapping
else:
# We need to offset the mapping for each batch by the cumulative batch size
for k, v in batch.requests_idx_mapping.items():
requests_idx_mapping[k] = v + cumulative_batch_size
start_index = cumulative_batch_size
end_index = cumulative_batch_size + len(batch)
slots_start_index = cumulative_slots
slots_end_index = cumulative_slots + len(batch.slots)
# Copy tensors (GPU)
input_ids[start_index:end_index] = batch.input_ids
position_ids[start_index:end_index] = batch.position_ids
slot_indices[start_index:end_index] = batch.slot_indices + cumulative_slots
input_lengths_tensor[start_index:end_index] = batch.input_lengths_tensor
slots[slots_start_index:slots_end_index] = batch.slots
all_input_ids_tensor[
start_index:end_index, : batch.all_input_ids_tensor.shape[1]
] = batch.all_input_ids_tensor[:, :max_length]
block_tables_tensor[
start_index:end_index, : batch.block_tables_tensor.shape[1]
] = batch.block_tables_tensor[:, :max_blocks]
start_slots.append(batch.start_slots + cumulative_slots)
block_tables.extend(batch.block_tables)
all_input_ids.extend(batch.all_input_ids)
input_lengths.extend(batch.input_lengths)
prefix_offsets.extend(batch.prefix_offsets)
read_offsets.extend(batch.read_offsets)
next_token_chooser_parameters.extend([r.parameters for r in batch.requests])
stopping_criterias.extend(batch.stopping_criterias)
# Update
cumulative_batch_size += len(batch)
cumulative_slots += len(batch.slots)
start_slots = torch.concat(start_slots)
next_token_chooser = HeterogeneousNextTokenChooser.from_pb(
next_token_chooser_parameters,
dtype=batches[0].next_token_chooser.dtype,
device=batches[0].next_token_chooser.device,
)
# Needed to avoid dropping blocks when the batches will go out of scope
for b in batches:
b.block_tables = None
del b
return FlashCausalLMBatch(
batch_id=batches[0].batch_id,
requests=requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
position_ids=position_ids,
cu_seqlen_prefill=None,
start_slots=start_slots,
slot_indices=slot_indices,
needed_blocks_slots=None,
block_tables=block_tables,
block_tables_tensor=block_tables_tensor,
slots=slots,
max_seqlen=max_seqlen,
prefill_head_indices=None,
prefill_next_token_indices=None,
prefill_cu_outlens=None,
input_lengths=input_lengths,
input_lengths_tensor=input_lengths_tensor,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
all_input_ids=all_input_ids,
all_input_ids_tensor=all_input_ids_tensor,
next_token_chooser=next_token_chooser,
stopping_criterias=stopping_criterias,
blocks=blocks,
max_blocks=max_blocks,
)
def __del__(self):
if self.block_tables is not None and self.block_tables:
global CACHE_MANAGER
# Free blocks
CACHE_MANAGER.free(list(itertools.chain.from_iterable(self.block_tables)))
def __len__(self):
return len(self.requests)
class FlashCausalLM(Model):
def __init__(
self,
model: torch.nn.Module,
tokenizer: PreTrainedTokenizerBase,
num_layers: int,
num_kv_heads: int,
head_size: int,
dtype: torch.dtype,
device: torch.device,
rank: int = 0,
world_size: int = 1,
):
self.num_layers = num_layers
self.num_kv_heads = num_kv_heads
self.head_size = head_size
super(FlashCausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=False,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
@property
def batch_type(self) -> Type[FlashCausalLMBatch]:
return FlashCausalLMBatch
def warmup(self, batch: FlashCausalLMBatch):
global CACHE_MANAGER
torch.cuda.empty_cache()
try:
CACHE_MANAGER = CacheManager(
batch.blocks,
self.num_layers,
self.num_kv_heads,
self.head_size,
self.dtype,
self.device,
)
_, batch = self.generate_token(batch)
except Exception as e:
raise RuntimeError(
f"Not enough memory to handle {len(batch.input_ids)} prefill tokens. "
f"You need to decrease `--max-batch-prefill-tokens`"
) from e
torch.cuda.synchronize(self.device)
# Inspired by the original implementation in [vllm](https://github.com/vllm-project/vllm)
# Calculate the number of blocks that can be allocated with the free memory
dtype_size = torch.tensor([], dtype=self.dtype).element_size()
cache_block_size = BLOCK_SIZE * self.num_kv_heads * self.head_size
total_cache_size = self.num_layers * cache_block_size * 2 * dtype_size
total_free_memory, _ = torch.cuda.mem_get_info(self.device)
total_gpu_memory = torch.cuda.get_device_properties(self.device).total_memory
free_memory = max(
0, total_free_memory - (1 - MEMORY_FRACTION) * total_gpu_memory
)
num_blocks = (
int(free_memory // total_cache_size)
# Add batch.blocks as we allocated it above, so it is included in the peak memory.
+ CACHE_MANAGER.num_blocks
)
del CACHE_MANAGER
del batch
torch.cuda.empty_cache()
CACHE_MANAGER = CacheManager(
num_blocks,
self.num_layers,
self.num_kv_heads,
self.head_size,
self.dtype,
self.device,
)
return int(num_blocks * BLOCK_SIZE)
def decode(self, generated_ids: Union[torch.Tensor, List[int]]) -> str:
return self.tokenizer.decode(
generated_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
lm_head_indices: Optional[torch.Tensor] = None,
) -> Tuple[torch.Tensor, torch.Tensor]:
global CACHE_MANAGER
# Model Forward
return self.model.forward(
input_ids=input_ids,
position_ids=position_ids,
cu_seqlen_prefill=cu_seqlen_prefill,
kv_cache=CACHE_MANAGER.kv_cache,
block_tables=block_tables,
slots=slots,
input_lengths=input_lengths,
max_s=max_s,
lm_head_indices=lm_head_indices,
)
@tracer.start_as_current_span("generate_token")
def generate_token(
self, batch: FlashCausalLMBatch
) -> Tuple[List[Generation], Optional[FlashCausalLMBatch]]:
prefill = batch.cu_seqlen_prefill is not None
prefill_logprobs = batch.prefill_next_token_indices is not None
if batch.needed_blocks_slots:
# Allocate blocks to this batch
CACHE_MANAGER.allocate(batch)
try:
out = self.forward(
batch.input_ids,
batch.position_ids,
batch.cu_seqlen_prefill,
batch.block_tables_tensor,
batch.slots[batch.slot_indices],
batch.input_lengths_tensor,
batch.max_seqlen,
batch.prefill_head_indices,
)
except Exception as e:
del batch
raise e
if prefill:
next_token_logits = (
out[batch.prefill_next_token_indices] if prefill_logprobs else out
)
else:
next_token_logits = out
next_input_ids, next_token_logprobs = batch.next_token_chooser(
batch.all_input_ids_tensor[:, : batch.max_seqlen], next_token_logits
)
if prefill:
if len(batch) > 1 and prefill_logprobs:
# We create the prefill_tokens_indices tensor that will be used to gather prefill logprobs
# When batch == 1, we will just use the batch.input_ids values directly
prefill_tokens_indices = batch.input_ids.new_zeros(len(out))
next_position_ids = batch.position_ids.new_empty(len(batch))
batch.slot_indices = batch.slot_indices[batch.cu_seqlen_prefill[1:] - 1]
# We do not need cu_seqlen_prefill anymore
batch.cu_seqlen_prefill = None
else:
prefill_logprobs = None
next_position_ids = batch.position_ids
# Cumulative length
cumulative_length = 0
# Results
generations: List[Generation] = []
stopped = True
# Zipped iterator
iterator = zip(
batch.input_lengths,
batch.all_input_ids,
)
# We do two for loops as the first one can run completely asynchronously from the GPU while for the second
# one, we need to first do a GPU <-> CPU sync
# It is faster if we delay this sync for the maximum amount of time
# For each member of the batch
for i, (
input_length,
all_input_ids,
) in enumerate(iterator):
# Indexing metadata
start_index = cumulative_length
end_index = cumulative_length + input_length
if prefill:
# Indexing metadata
out_start_index = batch.prefill_cu_outlens[i]
out_end_index = batch.prefill_cu_outlens[i + 1]
out_length = out_end_index - out_start_index
# Initialize position_ids
# In decode, we do not need this as we can just increment position ids
next_position_ids[i] = batch.position_ids[end_index - 1]
# Used to gather prefill logprobs
# Copy batch.input_ids to prefill_token_indices
if prefill_logprobs:
if len(batch) > 1:
prefill_tokens_indices[
out_start_index : out_end_index - 1
] = batch.input_ids[start_index + 1 : start_index + out_length]
else:
# Set prefill_tokens_indices to the correct slice
prefill_tokens_indices = batch.input_ids[
start_index + 1 : start_index + out_length
]
batch.all_input_ids_tensor[i, input_length] = next_input_ids[i]
cumulative_length += input_length
# Set values in batch
batch.input_ids = next_input_ids
batch.position_ids = next_position_ids + 1
batch.input_lengths_tensor += 1
batch.slot_indices += 1
if prefill and prefill_logprobs:
# Get prefill logprobs
prefill_logprobs_tensor = torch.log_softmax(out, -1)
prefill_logprobs = torch.gather(
prefill_logprobs_tensor, 1, prefill_tokens_indices.view(-1, 1)
)
# GPU <-> CPU sync
prefill_logprobs = prefill_logprobs.view(-1).tolist()
# GPU <-> CPU sync
next_token_logprobs = next_token_logprobs.tolist()
next_token_ids = batch.input_ids.tolist()
# Zipped iterator
iterator = zip(
batch.requests,
batch.input_lengths,
batch.prefix_offsets,
batch.read_offsets,
batch.stopping_criterias,
batch.all_input_ids,
batch.next_token_chooser.do_sample,
batch.next_token_chooser.seeds,
next_token_ids,
next_token_logprobs,
)
# For each member of the batch
for i, (
request,
input_length,
prefix_offset,
read_offset,
stopping_criteria,
all_input_ids,
do_sample,
seed,
next_token_id,
next_token_logprob,
) in enumerate(iterator):
# Append next token to all tokens
all_input_ids.append(next_token_id)
# Generated token
next_token_text, prefix_offset, read_offset = self.decode_token(
all_input_ids,
prefix_offset,
read_offset,
)
# Evaluate stopping criteria
stop, reason = stopping_criteria(
next_token_id,
next_token_text,
)
if not stop:
stopped = False
# Shard generations
# All generations will be appended in the rust sharded client
if i % self.world_size == self.rank:
if stop:
# Decode generated tokens
output_text = self.decode(
all_input_ids[-stopping_criteria.current_tokens :]
)
generated_text = GeneratedText(
output_text,
stopping_criteria.current_tokens,
reason,
seed if do_sample else None,
)
else:
generated_text = None
# Prefill
if prefill and request.prefill_logprobs:
out_start_index = batch.prefill_cu_outlens[i]
out_end_index = batch.prefill_cu_outlens[i + 1]
# Remove generated token to only have prefill and add nan for first prompt token
request_prefill_logprobs = [float("nan")] + prefill_logprobs[
out_start_index : out_end_index - 1
]
prefill_token_ids = all_input_ids[:-1]
prefill_texts = self.tokenizer.batch_decode(
prefill_token_ids,
clean_up_tokenization_spaces=False,
skip_special_tokens=False,
)
prefill_tokens = PrefillTokens(
prefill_token_ids, request_prefill_logprobs, prefill_texts
)
else:
prefill_tokens = None
generation = Generation(
request.id,
prefill_tokens,
next_token_id,
next_token_logprob,
next_token_text,
next_token_id in self.all_special_ids,
generated_text,
)
generations.append(generation)
# Update values
batch.input_lengths[i] = input_length + 1
batch.prefix_offsets[i] = prefix_offset
batch.read_offsets[i] = read_offset
batch.all_input_ids[i] = all_input_ids
if stopped:
del batch
# No need to return a batch if we know that all requests stopped
return generations, None
batch.prefill_cu_outlens = None
batch.prefill_head_indices = None
batch.prefill_next_token_indices = None
batch.max_seqlen = batch.max_seqlen + 1
return generations, batch
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/flash_llama.py | import torch
import torch.distributed
from opentelemetry import trace
from transformers.models.llama import LlamaTokenizer, LlamaTokenizerFast
from typing import Optional
from text_generation_server.models import FlashCausalLM
from text_generation_server.models.custom_modeling.flash_llama_modeling import (
FlashLlamaForCausalLM,
LlamaConfig,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
tracer = trace.get_tracer(__name__)
class FlashLlama(FlashCausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
raise NotImplementedError("FlashLlama is only available on GPU")
try:
tokenizer = LlamaTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
except Exception:
tokenizer = LlamaTokenizerFast.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = LlamaConfig.from_pretrained(
model_id, revision=revision, trust_remote_code=trust_remote_code
)
config.quantize = quantize
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(filenames, device, dtype, process_group=self.process_group)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = FlashLlamaForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(FlashLlama, self).__init__(
model=model,
tokenizer=tokenizer,
num_layers=len(model.model.layers),
num_kv_heads=model.model.num_key_value_heads,
head_size=model.model.head_size,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/flash_neox.py | import torch
import torch.distributed
from opentelemetry import trace
from transformers import AutoTokenizer, AutoConfig
from typing import Optional
from text_generation_server.models import FlashCausalLM
from text_generation_server.models.custom_modeling.flash_neox_modeling import (
FlashGPTNeoXForCausalLM,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
tracer = trace.get_tracer(__name__)
class FlashNeoXSharded(FlashCausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
raise NotImplementedError("FlashNeoX is only available on GPU")
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = AutoConfig.from_pretrained(
model_id, revision=revision, trust_remote_code=trust_remote_code
)
config.quantize = quantize
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames, device=device, dtype=dtype, process_group=self.process_group
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = FlashGPTNeoXForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(FlashNeoXSharded, self).__init__(
model=model.to(device),
tokenizer=tokenizer,
num_layers=len(model.gpt_neox.layers),
num_kv_heads=model.gpt_neox.num_heads,
head_size=model.gpt_neox.head_size,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/flash_rw.py | import torch
import torch.distributed
from opentelemetry import trace
from transformers import AutoTokenizer
from typing import Optional
from text_generation_server.models import FlashCausalLM
from text_generation_server.models.custom_modeling.flash_rw_modeling import (
RWConfig,
FlashRWForCausalLM,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
tracer = trace.get_tracer(__name__)
class FlashRWSharded(FlashCausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
raise NotImplementedError("FlashRW is only available on GPU")
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = RWConfig.from_pretrained(
model_id, revision=revision, trust_remote_code=trust_remote_code
)
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames,
device,
dtype,
process_group=self.process_group,
aliases={"lm_head.weight": ["transformer.word_embeddings.weight"]},
)
config.quantize = quantize
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = FlashRWForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(FlashRWSharded, self).__init__(
model=model.to(device),
tokenizer=tokenizer,
num_layers=len(model.transformer.h),
num_kv_heads=model.transformer.cache_size,
head_size=model.transformer.head_size,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/flash_santacoder.py | import torch
import torch.distributed
from opentelemetry import trace
from transformers import AutoTokenizer, AutoConfig
from typing import Optional, List
import json
import os
from huggingface_hub import hf_hub_download
from text_generation_server.models import FlashCausalLM
from text_generation_server.models.custom_modeling.flash_santacoder_modeling import (
FlashSantacoderForCausalLM,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
tracer = trace.get_tracer(__name__)
class FlashSantacoderSharded(FlashCausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
raise NotImplementedError("FlashSantacoderSharded is only available on GPU")
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
trust_remote_code=True,
)
config.quantize = quantize
config.transpose = config.architectures[0].startswith("GPT2")
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames,
device=device,
dtype=dtype,
process_group=self.process_group,
aliases={"transformer.wte.weight": ["lm_head.weight"]},
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = FlashSantacoderForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(FlashSantacoderSharded, self).__init__(
model=model.to(device),
tokenizer=tokenizer,
num_layers=len(model.transformer.h),
num_kv_heads=1,
head_size=model.transformer.head_size,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
def decode(self, generated_ids: List[int]) -> str:
# Do not skip special tokens as they are used for custom parsing rules of the generated text
return self.tokenizer.decode(
generated_ids, skip_special_tokens=False, clean_up_tokenization_spaces=False
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/galactica.py | import re
import torch
import torch.distributed
from typing import List, Optional, Type
from transformers import (
AutoTokenizer,
AutoConfig,
PreTrainedTokenizerBase,
)
from text_generation_server.models import CausalLM
from text_generation_server.models.causal_lm import CausalLMBatch
from text_generation_server.pb import generate_pb2
from text_generation_server.models.custom_modeling.opt_modeling import OPTForCausalLM
from text_generation_server.utils import (
NextTokenChooser,
StoppingCriteria,
initialize_torch_distributed,
weight_files,
Weights,
)
# CREDIT: Papers with code => https://github.com/paperswithcode/galai/blob/main/galai/utils.py
# we split individual characters inside special tokens like [START_DNA]
CUSTOM_SEQ_RE = re.compile(r"(\[START_(DNA|SMILES|I_SMILES|AMINO)])(.*?)(\[END_\2])")
# token added to implement a custom sequence tokenization. This token is added at
# corpus cleaning step and removed in pretokenization. The digits are added to increase the chance
# that they do not occur in the corpus. The digits are escaped so that the token does not appear
# literally in the source code in case we ever include it in the training data.
SPLIT_MARKER = f"SPL{1}T-TH{1}S-Pl3A5E"
def _insert_split_marker(m: re.Match):
"""
Applies split marker based on a regex match of special tokens such as
[START_DNA].
Parameters
----------
n : str
Input text to split
Returns
----------
str - the text with the split token added
"""
start_token, _, sequence, end_token = m.groups()
sequence = re.sub(r"(.)", rf"{SPLIT_MARKER}\1", sequence, flags=re.DOTALL)
return f"{start_token}{sequence}{SPLIT_MARKER}{end_token}"
def escape_custom_split_sequence(text):
"""
Applies custom splitting to the text for GALILEO's tokenization
Parameters
----------
text : str
Input text to split
Returns
----------
str - the text with the split token added
"""
return CUSTOM_SEQ_RE.sub(_insert_split_marker, text)
# END CREDIT
class GalacticaCausalLMBatch(CausalLMBatch):
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "GalacticaCausalLMBatch":
inputs = []
next_token_choosers = []
stopping_criterias = []
prefix_offsets = []
read_offsets = []
requests_idx_mapping = {}
# Parse batch
max_truncation = 0
padding_right_offset = 0
max_decode_tokens = 0
for i, r in enumerate(pb.requests):
requests_idx_mapping[r.id] = i
# Add escape_custom_split_sequence to the CausalLMBatch logic
inputs.append(escape_custom_split_sequence(r.inputs))
next_token_choosers.append(NextTokenChooser.from_pb(r.parameters, device))
stopping_criteria = StoppingCriteria.from_pb(
r.stopping_parameters, tokenizer
)
stopping_criterias.append(stopping_criteria)
max_truncation = max(max_truncation, r.truncate)
max_decode_tokens += stopping_criteria.max_new_tokens
padding_right_offset = max(
padding_right_offset, stopping_criteria.max_new_tokens
)
tokenized_inputs = tokenizer(
inputs,
return_tensors="pt",
padding=True,
return_token_type_ids=False,
truncation=True,
max_length=max_truncation,
).to(device)
for _ in pb.requests:
input_len = tokenized_inputs["input_ids"].shape[1]
prefix_offsets.append(0)
read_offsets.append(input_len)
input_lengths = tokenized_inputs["attention_mask"].sum(1)
max_input_length = input_lengths.max()
input_ids = tokenized_inputs["input_ids"]
# Allocate maximum attention_mask
attention_mask = input_ids.new_zeros(
(pb.size, max_input_length + padding_right_offset)
)
# Copy tokenizer attention_mask into fully allocated attention_mask
attention_mask[:, :max_input_length] = tokenized_inputs["attention_mask"]
position_ids = tokenized_inputs["attention_mask"].long().cumsum(-1) - 1
position_ids.masked_fill_(tokenized_inputs["attention_mask"] == 0, 1)
all_input_ids = tokenized_inputs["input_ids"].T.split(1, dim=1)
max_tokens = len(inputs) * max_input_length + max_decode_tokens
return cls(
batch_id=pb.id,
requests=pb.requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=None,
all_input_ids=list(all_input_ids),
input_lengths=input_lengths.tolist(),
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
next_token_choosers=next_token_choosers,
stopping_criterias=stopping_criterias,
max_input_length=max_input_length.item(),
padding_right_offset=padding_right_offset,
max_tokens=max_tokens,
)
class GalacticaSharded(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
tp_parallel=True,
trust_remote_code=trust_remote_code,
)
config.quantize = quantize
tokenizer.pad_token_id = config.pad_token_id
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames, device=device, dtype=dtype, process_group=self.process_group
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = OPTForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
@property
def batch_type(self) -> Type[CausalLMBatch]:
return GalacticaCausalLMBatch
def decode(self, generated_ids: List[int]) -> str:
# Do not skip special tokens as they are used for custom parsing rules of the generated text
return self.tokenizer.decode(
generated_ids, skip_special_tokens=False, clean_up_tokenization_spaces=False
)
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
):
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
past_key_values=past_key_values,
use_cache=True,
)
return outputs.logits, outputs.past_key_values
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/gpt_neox.py | import torch
import torch.distributed
from typing import Optional
from transformers import (
AutoTokenizer,
AutoConfig,
)
from text_generation_server.models import CausalLM
from text_generation_server.models.custom_modeling.neox_modeling import (
GPTNeoxForCausalLM,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
class GPTNeoxSharded(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
tokenizer.pad_token = tokenizer.eos_token
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
trust_remote_code=trust_remote_code,
)
config.quantize = quantize
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames, device=device, dtype=dtype, process_group=self.process_group
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = GPTNeoxForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
):
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
past_key_values=past_key_values,
use_cache=True,
)
logits = outputs.logits
return logits, outputs.past_key_values
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/model.py | import inspect
import torch
from abc import ABC, abstractmethod
from typing import List, Tuple, Optional, TypeVar, Type
from transformers import PreTrainedTokenizerBase, PretrainedConfig
from text_generation_server.models.types import Batch, Generation
from text_generation_server.pb.generate_pb2 import InfoResponse
B = TypeVar("B", bound=Batch)
class Model(ABC):
def __init__(
self,
model: torch.nn.Module,
tokenizer: PreTrainedTokenizerBase,
requires_padding: bool,
dtype: torch.dtype,
device: torch.device,
rank: int = 0,
world_size: int = 1,
):
self.model = model.eval()
self.tokenizer = tokenizer
self.all_special_ids = set(tokenizer.all_special_ids)
self.requires_padding = requires_padding
self.dtype = dtype
self.device = device
self.rank = rank
self.world_size = world_size
self.has_position_ids = (
inspect.signature(model.forward).parameters.get("position_ids", None)
is not None
)
self.check_initialized()
@property
def info(self) -> InfoResponse:
return InfoResponse(
requires_padding=self.requires_padding,
dtype=str(self.dtype),
device_type=self.device.type,
)
@property
@abstractmethod
def batch_type(self) -> Type[B]:
raise NotImplementedError
@abstractmethod
def generate_token(self, batch: B) -> Tuple[List[Generation], Optional[B]]:
raise NotImplementedError
def warmup(self, batch: B) -> Optional[int]:
self.generate_token(batch)
return None
def decode_token(
self,
all_input_ids: List[int],
prefix_offset: int = 0,
read_offset: int = 0,
) -> Tuple[str, int, int]:
"""Hack to hopefully support generate_stream for the maximum number of tokenizers"""
# The prefix text is necessary only to defeat cleanup algorithms in the decode
# which decide to add a space or not depending on the surrounding ids.
prefix_text = self.tokenizer.decode(
all_input_ids[prefix_offset:read_offset], skip_special_tokens=False
)
new_text = self.tokenizer.decode(
all_input_ids[prefix_offset:], skip_special_tokens=False
)
if len(new_text) > len(prefix_text) and not new_text.endswith("�"):
# utf-8 char at the end means it's a potential unfinished byte sequence
# from byte fallback tokenization.
# If it's in the middle, it's probably a real invalid id generated
# by the model
new_text = new_text[len(prefix_text) :]
return new_text, read_offset, len(all_input_ids)
else:
return "", prefix_offset, read_offset
def check_initialized(self):
uninitialized_parameters = []
for n, p in self.model.named_parameters():
if p.data.device == torch.device("meta"):
uninitialized_parameters.append(n)
if uninitialized_parameters:
raise RuntimeError(
f"found uninitialized parameters in model {self.__class__.__name__}: {uninitialized_parameters}"
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/mpt.py | import torch
import torch.distributed
from pathlib import Path
from typing import Optional, Type
from opentelemetry import trace
from transformers import AutoTokenizer, PretrainedConfig, PreTrainedTokenizerBase
from huggingface_hub import hf_hub_download
import json
from text_generation_server.models import CausalLM
from text_generation_server.models.causal_lm import CausalLMBatch
from text_generation_server.pb import generate_pb2
from text_generation_server.models.custom_modeling.mpt_modeling import (
MPTForCausalLM,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
tracer = trace.get_tracer(__name__)
class MPTCausalLMBatch(CausalLMBatch):
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "CausalLMBatch":
batch = super().from_pb(pb=pb, tokenizer=tokenizer, dtype=dtype, device=device)
batch.keys_head_dim_last = False
return batch
class MPTSharded(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16
else:
raise NotImplementedError("MPTSharded is only available on GPU")
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
tokenizer.pad_token = tokenizer.eos_token
# If model_id is a local path, load the file directly
local_path = Path(model_id, "config.json")
if local_path.exists():
filename = str(local_path.resolve())
else:
filename = hf_hub_download(
model_id, revision=revision, filename="config.json"
)
with open(filename, "r") as f:
config = json.load(f)
config = PretrainedConfig(**config)
config.quantize = quantize
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(filenames, device, dtype, process_group=self.process_group)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
config.quantize = quantize
model = MPTForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=False,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
@property
def batch_type(self) -> Type[CausalLMBatch]:
return MPTCausalLMBatch
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/opt.py | import torch
import torch.distributed
from typing import Optional
from transformers import (
AutoTokenizer,
AutoConfig,
)
from text_generation_server.models.custom_modeling.opt_modeling import OPTForCausalLM
from text_generation_server.models import CausalLM
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
class OPTSharded(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
trust_remote_code=trust_remote_code,
)
config.quantize = quantize
tokenizer.pad_token_id = config.pad_token_id
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames, device=device, dtype=dtype, process_group=self.process_group
)
if config.quantize == "gptq":
weights._set_gptq_params(model_id)
model = OPTForCausalLM(config, weights)
torch.distributed.barrier(group=self.process_group)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
):
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
past_key_values=past_key_values,
use_cache=True,
)
return outputs.logits, outputs.past_key_values
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/rw.py | import torch
from transformers import AutoTokenizer, AutoModelForCausalLM
from typing import List, Optional, Tuple
from text_generation_server.models import CausalLM
class RW(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
if torch.cuda.is_available():
device = torch.device("cuda")
dtype = torch.float16 if dtype is None else dtype
else:
if quantize:
raise ValueError("quantization is not available on CPU")
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
model = AutoModelForCausalLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=dtype,
device_map="auto"
if torch.cuda.is_available() and torch.cuda.device_count() > 1
else None,
load_in_8bit=quantize == "bitsandbytes",
trust_remote_code=trust_remote_code,
)
if torch.cuda.is_available() and torch.cuda.device_count() == 1:
model = model.cuda()
if tokenizer.pad_token_id is None:
if model.config.pad_token_id is not None:
tokenizer.pad_token_id = model.config.pad_token_id
elif model.config.eos_token_id is not None:
tokenizer.pad_token_id = model.config.eos_token_id
elif tokenizer.eos_token_id is not None:
tokenizer.pad_token_id = tokenizer.eos_token_id
else:
tokenizer.add_special_tokens({"pad_token": "[PAD]"})
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
)
def forward(
self, input_ids, attention_mask, position_ids, past_key_values: Optional = None
) -> Tuple[torch.Tensor, List[Tuple[torch.Tensor, torch.Tensor]]]:
# Model Forward
if past_key_values is not None:
reshaped_past_key_values = []
for layer in past_key_values:
past_keys, past_values = layer
reshaped_past_key_values.append(
(
past_keys.view(-1, *past_keys.shape[-2:]),
past_values.view(-1, *past_values.shape[-2:]),
)
)
past_key_values = reshaped_past_key_values
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
past_key_values=past_key_values,
)
return outputs.logits, outputs.past_key_values
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/santacoder.py | import torch
import torch.distributed
from typing import Optional, List
from transformers import AutoTokenizer, AutoModelForCausalLM
from text_generation_server.models import CausalLM
FIM_PREFIX = "<fim-prefix>"
FIM_MIDDLE = "<fim-middle>"
FIM_SUFFIX = "<fim-suffix>"
FIM_PAD = "<fim-pad>"
EOD = "<|endoftext|>"
class SantaCoder(CausalLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
if torch.cuda.is_available():
device = torch.device("cuda")
dtype = torch.float16 if dtype is None else dtype
else:
if quantize:
raise ValueError("quantization is not available on CPU")
device = torch.device("cpu")
dtype = torch.float32
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
tokenizer.add_special_tokens(
{
"additional_special_tokens": [
EOD,
FIM_PREFIX,
FIM_MIDDLE,
FIM_SUFFIX,
FIM_PAD,
],
"pad_token": EOD,
}
)
with device:
model = AutoModelForCausalLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=dtype,
load_in_8bit=quantize == "bitsandbytes",
trust_remote_code=trust_remote_code,
)
super(CausalLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
)
def decode(self, generated_ids: List[int]) -> str:
# Do not skip special tokens as they are used for custom parsing rules of the generated text
return self.tokenizer.decode(
generated_ids, skip_special_tokens=False, clean_up_tokenization_spaces=False
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/seq2seq_lm.py | import torch
from dataclasses import dataclass
from opentelemetry import trace
from transformers import AutoTokenizer, AutoModelForSeq2SeqLM, PreTrainedTokenizerBase
from typing import Optional, Tuple, List, Type, Dict
from text_generation_server.models import Model
from text_generation_server.models.types import (
GeneratedText,
Batch,
Generation,
PrefillTokens,
)
from text_generation_server.pb import generate_pb2
from text_generation_server.utils import NextTokenChooser, StoppingCriteria, Sampling
tracer = trace.get_tracer(__name__)
@dataclass
class Seq2SeqLMBatch(Batch):
batch_id: int
requests: List[generate_pb2.Request]
requests_idx_mapping: Dict[int, int]
# Encoder values
input_ids: Optional[torch.Tensor]
attention_mask: torch.Tensor
# Decoder values
decoder_input_ids: torch.Tensor
decoder_attention_mask: Optional[torch.Tensor]
encoder_last_hidden_state: Optional[torch.Tensor]
# All tokens
all_decoder_input_ids: List[torch.Tensor]
# Seq2SeqLM keeps track of both encoder and decoder attention keys and values
past_key_values: Optional[List[Tuple]]
# Lengths of all generations present in the batch
input_lengths: List[int]
decoder_input_lengths: List[int]
prefix_offsets: List[int]
read_offsets: List[int]
# Generation helpers
next_token_choosers: List[NextTokenChooser]
stopping_criterias: List[StoppingCriteria]
# Metadata used for padding
max_input_length: int
max_decoder_input_length: int
padding_right_offset: int
# Maximum number of tokens this batch will grow to
max_tokens: int
def to_pb(self) -> generate_pb2.CachedBatch:
"""Convert a Seq2SeqLMBatch to a text_generation_server.v1.CachedBatch protobuf"""
return generate_pb2.CachedBatch(
id=self.batch_id,
request_ids=[r.id for r in self.requests],
size=len(self),
max_tokens=self.max_tokens,
)
@classmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "Seq2SeqLMBatch":
"""Convert a text_generation_server.v1.Batch protobuf to a Seq2SeqLMBatch"""
inputs = []
next_token_choosers = []
stopping_criterias = []
decoder_input_lengths = []
prefix_offsets = []
read_offsets = []
requests_idx_mapping = {}
# Parse batch
max_truncation = 0
padding_right_offset = 0
max_decode_tokens = 0
for i, r in enumerate(pb.requests):
inputs.append(r.inputs)
requests_idx_mapping[r.id] = i
decoder_input_lengths.append(1)
next_token_choosers.append(NextTokenChooser.from_pb(r.parameters, device))
stopping_criteria = StoppingCriteria.from_pb(
r.stopping_parameters, tokenizer
)
stopping_criterias.append(stopping_criteria)
max_truncation = max(max_truncation, r.truncate)
max_decode_tokens += stopping_criteria.max_new_tokens
padding_right_offset = max(
padding_right_offset, stopping_criteria.max_new_tokens
)
# Tokenize batch
tokenized_inputs = tokenizer(
inputs,
return_tensors="pt",
padding=True,
return_token_type_ids=False,
truncation=True,
max_length=max_truncation,
).to(device)
input_lengths = tokenized_inputs["attention_mask"].sum(1)
max_input_length = input_lengths.max()
# Decoder sequence only contains the bos_token
decoder_input_ids = (
torch.tensor(tokenizer.bos_token_id, device=device)
.repeat(len(pb.requests))
.view(-1, 1)
)
for _ in pb.requests:
prefix_offsets.append(0)
read_offsets.append(1)
all_decoder_input_ids = decoder_input_ids.view(-1).split(1)
max_tokens = len(inputs) * (max_input_length + max_decode_tokens)
return cls(
batch_id=pb.id,
requests=pb.requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=tokenized_inputs["input_ids"],
attention_mask=tokenized_inputs["attention_mask"],
decoder_input_ids=decoder_input_ids,
all_decoder_input_ids=list(all_decoder_input_ids),
decoder_attention_mask=None,
encoder_last_hidden_state=None,
past_key_values=None,
input_lengths=input_lengths.tolist(),
decoder_input_lengths=decoder_input_lengths,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
next_token_choosers=next_token_choosers,
stopping_criterias=stopping_criterias,
max_input_length=max_input_length.item(),
max_decoder_input_length=1,
padding_right_offset=padding_right_offset,
max_tokens=max_tokens,
)
@tracer.start_as_current_span("filter")
def filter(self, request_ids: List[int]) -> Optional["Seq2SeqLMBatch"]:
if len(request_ids) == 0:
raise ValueError("Batch must have at least one request")
if len(request_ids) == len(self):
return self
keep_indices = []
# New values after filtering
requests_idx_mapping = {}
requests = []
input_lengths = []
decoder_input_lengths = []
prefix_offsets = []
read_offsets = []
all_decoder_input_ids = []
next_token_choosers = []
stopping_criterias = []
max_input_length = 0
max_decoder_input_length = 0
padding_right_offset = 0
total_remaining_decode_tokens = 0
for i, request_id in enumerate(request_ids):
idx = self.requests_idx_mapping[request_id]
requests_idx_mapping[request_id] = i
keep_indices.append(idx)
requests.append(self.requests[idx])
prefix_offsets.append(self.prefix_offsets[idx])
read_offsets.append(self.read_offsets[idx])
all_decoder_input_ids.append(self.all_decoder_input_ids[idx])
request_input_length = self.input_lengths[idx]
input_lengths.append(request_input_length)
max_input_length = max(max_input_length, request_input_length)
request_decoder_input_length = self.decoder_input_lengths[idx]
decoder_input_lengths.append(request_decoder_input_length)
max_decoder_input_length = max(
max_decoder_input_length, request_decoder_input_length
)
next_token_choosers.append(self.next_token_choosers[idx])
stopping_criteria = self.stopping_criterias[idx]
stopping_criterias.append(stopping_criteria)
remaining_decode_tokens = (
stopping_criteria.max_new_tokens - stopping_criteria.current_tokens
)
total_remaining_decode_tokens += remaining_decode_tokens
padding_right_offset = max(padding_right_offset, remaining_decode_tokens)
# Apply indices to input_ids, attention mask, past key values and other items that need to be cached
self.decoder_input_ids = self.decoder_input_ids[keep_indices]
self.attention_mask = self.attention_mask[keep_indices, -max_input_length:]
if self.decoder_attention_mask is not None:
self.decoder_attention_mask = self.decoder_attention_mask[
keep_indices,
-(self.padding_right_offset + max_decoder_input_length) : (
self.decoder_attention_mask.shape[1] - self.padding_right_offset
)
+ padding_right_offset,
]
self.encoder_last_hidden_state = self.encoder_last_hidden_state[
keep_indices, -max_input_length:
]
# Ensure that past_key_values tensors can be updated in-place
if type(self.past_key_values[0]) == tuple:
self.past_key_values = [
[t for t in layer] for layer in self.past_key_values
]
decoder_past_seq_len = max_decoder_input_length - 1
for layer in self.past_key_values:
layer[0] = layer[0][keep_indices, :, -decoder_past_seq_len:]
layer[1] = layer[1][keep_indices, :, -decoder_past_seq_len:]
layer[2] = layer[2][keep_indices, :, -max_input_length:]
layer[3] = layer[3][keep_indices, :, -max_input_length:]
max_tokens = (
len(request_ids) * (max_input_length + max_decoder_input_length)
+ remaining_decode_tokens
)
self.requests = requests
self.requests_idx_mapping = requests_idx_mapping
self.input_ids = None
self.all_decoder_input_ids = all_decoder_input_ids
self.input_lengths = input_lengths
self.decoder_input_lengths = decoder_input_lengths
self.prefix_offsets = prefix_offsets
self.read_offsets = read_offsets
self.next_token_choosers = next_token_choosers
self.stopping_criterias = stopping_criterias
self.max_input_length = max_input_length
self.max_decoder_input_length = max_decoder_input_length
self.padding_right_offset = padding_right_offset
self.max_tokens = max_tokens
return self
@classmethod
@tracer.start_as_current_span("concatenate")
def concatenate(cls, batches: List["Seq2SeqLMBatch"]) -> "Seq2SeqLMBatch":
"""Concatenate multiple batches together by padding internal torch tensors"""
# Used for padding
total_batch_size = 0
max_input_length = 0
max_decoder_input_length = 0
padding_right_offset = 0
for batch in batches:
total_batch_size += len(batch)
max_input_length = max(max_input_length, batch.max_input_length)
max_decoder_input_length = max(
max_decoder_input_length, batch.max_decoder_input_length
)
padding_right_offset = max(padding_right_offset, batch.padding_right_offset)
# Batch attributes
requests = []
requests_idx_mapping = {}
all_decoder_input_ids = []
input_lengths = []
decoder_input_lengths = []
prefix_offsets = []
read_offsets = []
next_token_choosers = []
stopping_criterias = []
max_tokens = 0
# Batch tensors
attention_mask = None
decoder_input_ids = None
decoder_attention_mask = None
encoder_last_hidden_state = None
past_key_values = []
# Used for slicing correctly inside the tensors
# Equivalent to a cumsum on batch sizes
start_index = 0
for i, batch in enumerate(batches):
# Extend all list attributes
requests.extend(batch.requests)
all_decoder_input_ids.extend(batch.all_decoder_input_ids)
input_lengths.extend(batch.input_lengths)
decoder_input_lengths.extend(batch.decoder_input_lengths)
prefix_offsets.extend(batch.prefix_offsets)
read_offsets.extend(batch.read_offsets)
next_token_choosers.extend(batch.next_token_choosers)
stopping_criterias.extend(batch.stopping_criterias)
if i == 0:
requests_idx_mapping = batch.requests_idx_mapping
else:
# We need to offset the mapping for each batch by the cumulative batch size
for k, v in batch.requests_idx_mapping.items():
requests_idx_mapping[k] = v + start_index
# Slicing end index for this batch
end_index = start_index + len(batch)
# We only concatenate batches that did at least one step
if batch.encoder_last_hidden_state is None:
raise ValueError("Batch encoder_last_hidden_state cannot be None")
# Create padded tensor
if attention_mask is None:
attention_mask = batch.attention_mask.new_zeros(
(total_batch_size, max_input_length),
)
# Copy to correct indices
attention_mask[
start_index:end_index, -batch.max_input_length :
] = batch.attention_mask[:, -batch.max_input_length :]
# Create padded tensor
if decoder_input_ids is None:
decoder_input_ids = batch.decoder_input_ids.new_zeros(
(total_batch_size, 1),
)
# Copy to correct indices
decoder_input_ids[start_index:end_index] = batch.decoder_input_ids
# Create padded tensor
if decoder_attention_mask is None:
# As decoder_attention_mask might not exist, we use `batch.attention_mask` for device here
decoder_attention_mask = batch.attention_mask.new_zeros(
(total_batch_size, max_decoder_input_length + padding_right_offset),
)
# If the decoder mask does not exist yet, all generations started at the same time and we never concatenated
# this batch. All generations are of length `batch.max_decoder_input_length`.
left_offset = max_decoder_input_length - batch.max_decoder_input_length
if batch.decoder_attention_mask is None:
decoder_attention_mask[
start_index:end_index,
left_offset:-padding_right_offset,
] = 1
# If it exists, we need to index
else:
batch_left_offset = (
batch.decoder_attention_mask.shape[1]
- batch.max_decoder_input_length
- batch.padding_right_offset
)
decoder_attention_mask[
start_index:end_index,
left_offset:-padding_right_offset,
] = batch.decoder_attention_mask[
:,
batch_left_offset : -batch.padding_right_offset,
]
# Create padded tensor
if encoder_last_hidden_state is None:
encoder_last_hidden_state = batch.encoder_last_hidden_state.new_zeros(
(
total_batch_size,
max_input_length,
batch.encoder_last_hidden_state.shape[-1],
),
)
# Copy to correct indices
encoder_last_hidden_state[
start_index:end_index, -batch.max_input_length :, :
] = batch.encoder_last_hidden_state[:, -batch.max_input_length :, :]
batch.encoder_last_hidden_state = None
# Ensure that we can update tensors in-place
if type(batch.past_key_values[0]) == tuple:
batch.past_key_values = [
[t for t in layer] for layer in batch.past_key_values
]
# Add eventual padding tokens that were added while concatenating
max_tokens += batch.max_tokens + (
max_input_length
- batch.max_input_length
+ max_decoder_input_length
- batch.max_decoder_input_length
) * len(batch)
start_index = end_index
# Determine shapes for new past kv tensors
first_past_kvs = batches[0].past_key_values
_, num_heads, _, head_dim = first_past_kvs[0][0].shape
padded_dec_t_shape = (
total_batch_size,
num_heads,
(max_decoder_input_length - 1),
head_dim,
)
padded_enc_t_shape = (
total_batch_size,
num_heads,
max_input_length,
head_dim,
)
# Iterate over attention layers
for j in range(len(first_past_kvs)):
past_key_values.append([])
# Decoder past
for k in range(0, 2):
# Initialize tensors
padded_past_values = first_past_kvs[j][k].new_zeros(padded_dec_t_shape)
past_key_values[j].append(padded_past_values)
start_index = 0
for batch in batches:
t = batch.past_key_values[j][k]
# Clear reference to the original tensor
batch.past_key_values[j][k] = None
# Slicing end index for this batch
end_index = start_index + len(batch)
# We slice the past keys and values to remove the padding from previous batches
past_seq_len = batch.max_decoder_input_length - 1
padded_past_values[start_index:end_index, :, -past_seq_len:, :] = t[
:, :, -past_seq_len:, :
]
del t
start_index = end_index
# Encoder past
for k in range(2, 4):
# Initialize tensors
padded_past_values = first_past_kvs[j][k].new_zeros(padded_enc_t_shape)
past_key_values[j].append(padded_past_values)
start_index = 0
for batch in batches:
t = batch.past_key_values[j][k]
# Clear reference to the original tensor
batch.past_key_values[j][k] = None
# Slicing end index for this batch
end_index = start_index + len(batch)
# We slice the past keys and values to remove the padding from previous batches
padded_past_values[
start_index:end_index, :, -batch.max_input_length :, :
] = t[:, :, -batch.max_input_length :, :]
del t
start_index = end_index
return cls(
batch_id=batches[0].batch_id,
requests=requests,
requests_idx_mapping=requests_idx_mapping,
input_ids=None,
attention_mask=attention_mask,
decoder_input_ids=decoder_input_ids,
all_decoder_input_ids=all_decoder_input_ids,
decoder_attention_mask=decoder_attention_mask,
encoder_last_hidden_state=encoder_last_hidden_state,
past_key_values=past_key_values,
input_lengths=input_lengths,
decoder_input_lengths=decoder_input_lengths,
prefix_offsets=prefix_offsets,
read_offsets=read_offsets,
next_token_choosers=next_token_choosers,
stopping_criterias=stopping_criterias,
max_input_length=max_input_length,
max_decoder_input_length=max_decoder_input_length,
padding_right_offset=padding_right_offset,
max_tokens=max_tokens,
)
def __len__(self):
return len(self.requests)
class Seq2SeqLM(Model):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
if torch.cuda.is_available():
device = torch.device("cuda")
dtype = torch.float16 if dtype is None else dtype
else:
if quantize:
raise ValueError("quantization is not available on CPU")
device = torch.device("cpu")
dtype = torch.float32
model = AutoModelForSeq2SeqLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=dtype,
device_map="auto"
if torch.cuda.is_available() and torch.cuda.device_count() > 1
else None,
load_in_8bit=quantize == "bitsandbytes",
trust_remote_code=trust_remote_code,
)
if torch.cuda.is_available() and torch.cuda.device_count() == 1:
model = model.cuda()
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
tokenizer.bos_token_id = model.config.decoder_start_token_id
super(Seq2SeqLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
)
@property
def batch_type(self) -> Type[Seq2SeqLMBatch]:
return Seq2SeqLMBatch
def decode(self, decoder_ids: List[int]) -> str:
return self.tokenizer.decode(
decoder_ids, skip_special_tokens=True, clean_up_tokenization_spaces=False
)
def forward(
self,
input_ids,
attention_mask,
decoder_input_ids,
decoder_attention_mask: Optional,
encoder_last_hidden_state: Optional,
past_key_values: Optional = None,
) -> Tuple[
torch.Tensor,
torch.Tensor,
List[Tuple[torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor]],
]:
# Model Forward
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
decoder_input_ids=decoder_input_ids,
decoder_attention_mask=decoder_attention_mask,
encoder_outputs=encoder_last_hidden_state,
past_key_values=past_key_values,
use_cache=True,
)
return (
outputs.logits,
outputs.encoder_last_hidden_state,
outputs.past_key_values,
)
@tracer.start_as_current_span("generate_token")
def generate_token(
self, batch: Seq2SeqLMBatch
) -> Tuple[List[Generation], Optional[Seq2SeqLMBatch]]:
if batch.decoder_attention_mask is not None:
# slice to the correct shape
decoder_attention_mask = batch.decoder_attention_mask[
:, : -batch.padding_right_offset
]
else:
decoder_attention_mask = None
# Wrap `encoder_last_hidden_state` because for some reason, Transformers does a `encoder_last_hidden_state[0]`
# internally...
if batch.encoder_last_hidden_state is not None:
encoder_last_hidden_state = [batch.encoder_last_hidden_state]
else:
encoder_last_hidden_state = None
logits, encoder_last_hidden_state, past = self.forward(
batch.input_ids,
batch.attention_mask,
batch.decoder_input_ids,
decoder_attention_mask,
encoder_last_hidden_state,
batch.past_key_values,
)
# Finished requests
generations: List[Generation] = []
stopped = True
# Zipped iterator
iterator = zip(
batch.requests,
batch.input_lengths,
batch.prefix_offsets,
batch.read_offsets,
batch.decoder_input_lengths,
logits,
batch.next_token_choosers,
batch.stopping_criterias,
batch.all_decoder_input_ids,
)
# For each member of the batch
for i, (
request,
input_length,
prefix_offset,
read_offset,
decoder_input_length,
logits,
next_token_chooser,
stopping_criteria,
all_decoder_input_ids,
) in enumerate(iterator):
# Select next token
next_token_id, logprobs = next_token_chooser(
all_decoder_input_ids.view(1, -1), logits[-1:, :]
)
# Append next token to decoder tokens
all_decoder_input_ids = torch.cat(
[all_decoder_input_ids, next_token_id.squeeze(1)]
)
new_decoder_input_length = decoder_input_length + 1
# Generated token
next_token_logprob = logprobs[-1, next_token_id]
next_token_id_squeezed = next_token_id.squeeze()
next_token_text, prefix_offset, read_offset = self.decode_token(
all_decoder_input_ids, prefix_offset, read_offset
)
# Evaluate stopping criteria
stop, reason = stopping_criteria(next_token_id, next_token_text)
if not stop:
stopped = False
# Shard generations
# All generations will be appended in the rust sharded client
if i % self.world_size == self.rank:
if stop:
# Slice with decoder_input_length to remove padding
# Decode all tokens
output_text = self.decode(
all_decoder_input_ids[-decoder_input_length:]
)
# Get seed
if isinstance(next_token_chooser.choice, Sampling):
seed = next_token_chooser.choice.seed
else:
seed = None
generated_text = GeneratedText(
output_text, stopping_criteria.current_tokens, reason, seed
)
else:
generated_text = None
# Prefill
if stopping_criteria.current_tokens == 1 and request.prefill_logprobs:
prefill_tokens = PrefillTokens(
[self.tokenizer.bos_token_id],
[float("nan")],
[self.tokenizer.bos_token],
)
else:
prefill_tokens = None
generation = Generation(
request.id,
prefill_tokens,
next_token_id_squeezed,
next_token_logprob,
next_token_text,
next_token_id_squeezed.item() in self.all_special_ids,
generated_text,
)
generations.append(generation)
# Update values
batch.decoder_input_ids[i] = next_token_id
batch.all_decoder_input_ids[i] = all_decoder_input_ids
batch.input_lengths[i] = input_length
batch.decoder_input_lengths[i] = new_decoder_input_length
batch.prefix_offsets[i] = prefix_offset
batch.read_offsets[i] = read_offset
batch.max_input_length = max(batch.max_input_length, input_length)
batch.max_decoder_input_length = max(
batch.max_decoder_input_length, new_decoder_input_length
)
# We finished all generations in the batch; there is no next batch
if stopped:
return generations, None
# We don't need input_ids after the prefill forward
batch.input_ids = None
batch.encoder_last_hidden_state = encoder_last_hidden_state
batch.past_key_values = past
# Update decoder_attention_mask as we added a new token to input_ids
if batch.decoder_attention_mask is not None:
batch.decoder_attention_mask[:, -batch.padding_right_offset] = 1
batch.padding_right_offset -= 1
return generations, batch
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/t5.py | import torch
import torch.distributed
from typing import List, Optional, Tuple
from transformers import (
AutoTokenizer,
AutoConfig,
)
from text_generation_server.models import Seq2SeqLM
from text_generation_server.models.custom_modeling.t5_modeling import (
T5ForConditionalGeneration,
)
from text_generation_server.utils import (
initialize_torch_distributed,
weight_files,
Weights,
)
class T5Sharded(Seq2SeqLM):
def __init__(
self,
model_id: str,
revision: Optional[str] = None,
quantize: Optional[str] = None,
dtype: Optional[torch.dtype] = None,
trust_remote_code: bool = False,
):
self.process_group, rank, world_size = initialize_torch_distributed()
if torch.cuda.is_available():
device = torch.device(f"cuda:{rank}")
dtype = torch.float16 if dtype is None else dtype
else:
device = torch.device("cpu")
dtype = torch.float32
config = AutoConfig.from_pretrained(
model_id,
revision=revision,
trust_remote_code=trust_remote_code,
)
config.quantize = quantize
tokenizer = AutoTokenizer.from_pretrained(
model_id,
revision=revision,
padding_side="left",
truncation_side="left",
trust_remote_code=trust_remote_code,
)
tokenizer.bos_token_id = config.decoder_start_token_id
torch.distributed.barrier(group=self.process_group)
filenames = weight_files(model_id, revision=revision, extension=".safetensors")
weights = Weights(
filenames,
device=device,
dtype=dtype,
process_group=self.process_group,
aliases={
"shared.weight": [
"encoder.embed_tokens.weight",
"decoder.embed_tokens.weight",
]
},
)
model = T5ForConditionalGeneration(config, weights)
torch.distributed.barrier(group=self.process_group)
super(Seq2SeqLM, self).__init__(
model=model,
tokenizer=tokenizer,
requires_padding=True,
dtype=dtype,
device=device,
rank=rank,
world_size=world_size,
)
def forward(
self,
input_ids,
attention_mask,
decoder_input_ids,
decoder_attention_mask: Optional,
encoder_last_hidden_state: Optional,
past_key_values: Optional = None,
) -> Tuple[
torch.Tensor,
torch.Tensor,
List[Tuple[torch.Tensor, torch.Tensor, torch.Tensor, torch.Tensor]],
]:
# Model Forward
outputs = self.model.forward(
input_ids=input_ids,
attention_mask=attention_mask,
decoder_input_ids=decoder_input_ids,
decoder_attention_mask=decoder_attention_mask,
encoder_outputs=encoder_last_hidden_state,
past_key_values=past_key_values,
use_cache=True,
)
return (
outputs.logits,
outputs.encoder_last_hidden_state,
outputs.past_key_values,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/models/types.py | import torch
from abc import ABC, abstractmethod
from dataclasses import dataclass
from typing import List, Optional
from transformers import PreTrainedTokenizerBase
from text_generation_server.pb import generate_pb2
from text_generation_server.pb.generate_pb2 import FinishReason
class Batch(ABC):
@abstractmethod
def to_pb(self) -> generate_pb2.CachedBatch:
raise NotImplementedError
@classmethod
@abstractmethod
def from_pb(
cls,
pb: generate_pb2.Batch,
tokenizer: PreTrainedTokenizerBase,
dtype: torch.dtype,
device: torch.device,
) -> "Batch":
raise NotImplementedError
@abstractmethod
def filter(self, request_ids: List[int]) -> "Batch":
raise NotImplementedError
@classmethod
@abstractmethod
def concatenate(cls, batches: List["Batch"]) -> "Batch":
raise NotImplementedError
@abstractmethod
def __len__(self):
raise NotImplementedError
@dataclass
class GeneratedText:
text: str
generated_tokens: int
finish_reason: FinishReason
seed: Optional[int]
def to_pb(self) -> generate_pb2.GeneratedText:
return generate_pb2.GeneratedText(
text=self.text,
generated_tokens=self.generated_tokens,
finish_reason=self.finish_reason,
seed=self.seed,
)
@dataclass
class PrefillTokens:
token_ids: List[int]
logprobs: List[float]
texts: List[str]
def to_pb(self) -> generate_pb2.PrefillTokens:
return generate_pb2.PrefillTokens(
ids=self.token_ids, logprobs=self.logprobs, texts=self.texts
)
def __len__(self):
return len(self.token_ids)
@dataclass
class Generation:
request_id: int
prefill_tokens: Optional[PrefillTokens]
token_id: int
token_logprob: float
token_text: str
token_is_special: bool
generated_text: Optional[GeneratedText]
def to_pb(self) -> generate_pb2.Generation:
return generate_pb2.Generation(
request_id=self.request_id,
prefill_tokens=self.prefill_tokens.to_pb()
if self.prefill_tokens is not None
else None,
token_id=self.token_id,
token_logprob=self.token_logprob,
token_text=self.token_text,
token_is_special=self.token_is_special,
generated_text=self.generated_text.to_pb()
if self.generated_text is not None
else None,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/bloom_modeling.py | # coding=utf-8
# Copyright 2022 HuggingFace Inc. team and BigScience workshop.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""PyTorch BLOOM model."""
import math
import os
import warnings
from typing import Optional, Tuple, Union
import torch
import torch.distributed
import torch.utils.checkpoint
from torch import nn
from torch.nn import LayerNorm
from torch.nn import functional as F
from transformers.modeling_outputs import (
BaseModelOutputWithPastAndCrossAttentions,
CausalLMOutputWithCrossAttentions,
)
from transformers import BloomConfig, PreTrainedModel
from text_generation_server.utils.layers import (
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelRowLinear,
TensorParallelHead,
)
CUSTOM_KERNELS_ENABLED = False
if not os.environ.get("DISABLE_CUSTOM_KERNELS", "False") == "True":
try:
from custom_kernels import fused_bloom_attention_cuda
CUSTOM_KERNELS_ENABLED = True
except ImportError:
pass
_CHECKPOINT_FOR_DOC = "bigscience/bloom-560m"
_CONFIG_FOR_DOC = "BloomConfig"
BLOOM_PRETRAINED_MODEL_ARCHIVE_LIST = [
"bigscience/bigscience-small-testing",
"bigscience/bloom-560m",
"bigscience/bloom-1b1",
"bigscience/bloom-1b7",
"bigscience/bloom-3b",
"bigscience/bloom-7b1",
"bigscience/bloom",
]
def _make_causal_mask(
input_ids_shape: torch.Size, device: torch.device, past_key_values_length: int
) -> torch.BoolTensor:
"""
Make causal mask used for self-attention.
"""
batch_size, target_length = input_ids_shape
mask = torch.ones(
(target_length, target_length + past_key_values_length),
dtype=torch.bool,
device=device,
)
mask = mask.triu(1 + past_key_values_length)
expanded_mask = mask.unsqueeze(0).expand(
batch_size, target_length, target_length + past_key_values_length
)
return expanded_mask
def _expand_mask(mask: torch.Tensor, tgt_length: int) -> torch.BoolTensor:
"""
Expands attention_mask from `[batch_size, src_length]` to `[batch_size, 1, tgt_length, src_length]`.
"""
batch_size, src_length = mask.shape
tgt_length = tgt_length if tgt_length is not None else src_length
expanded_mask = ~(mask[:, None, :].to(torch.bool))
return expanded_mask.expand(batch_size, tgt_length, src_length)
def build_alibi_tensor(attention_mask: torch.Tensor, num_heads: int) -> torch.Tensor:
"""
Link to paper: https://arxiv.org/abs/2108.12409 Alibi tensor is not causal as the original paper mentions, it
relies on a translation invariance of softmax for quick implementation: with l being a tensor, and a fixed value
`softmax(l+a) = softmax(l)`. Based on
https://github.com/ofirpress/attention_with_linear_biases/blob/a35aaca144e0eb6b789dfcb46784c4b8e31b7983/fairseq/models/transformer.py#L742
TODO @thomasw21 this doesn't work as nicely due to the masking strategy, and so masking varies slightly.
Args:
Returns tensor shaped (batch_size * num_heads, 1, max_seq_len)
attention_mask (`torch.Tensor`):
Token-wise attention mask, this should be of shape (batch_size, max_seq_len).
num_heads (`int`, *required*):
number of heads
dtype (`torch.dtype`, *optional*, default=`torch.bfloat16`):
dtype of the output tensor
"""
batch_size, seq_length = attention_mask.shape
closest_power_of_2 = 2 ** math.floor(math.log2(num_heads))
base = torch.tensor(
2 ** (-(2 ** -(math.log2(closest_power_of_2) - 3))),
device=attention_mask.device,
dtype=torch.float32,
)
powers = torch.arange(
1, 1 + closest_power_of_2, device=attention_mask.device, dtype=torch.int32
)
slopes = torch.pow(base, powers)
if closest_power_of_2 != num_heads:
extra_base = torch.tensor(
2 ** (-(2 ** -(math.log2(2 * closest_power_of_2) - 3))),
device=attention_mask.device,
dtype=torch.float32,
)
num_remaining_heads = min(closest_power_of_2, num_heads - closest_power_of_2)
extra_powers = torch.arange(
1,
1 + 2 * num_remaining_heads,
2,
device=attention_mask.device,
dtype=torch.int32,
)
slopes = torch.cat([slopes, torch.pow(extra_base, extra_powers)], dim=0)
# Note: alibi will added to the attention bias that will be applied to the query, key product of attention
# => therefore alibi will have to be of shape (batch_size, num_heads, query_length, key_length)
# => here we set (batch_size=1, num_heads=num_heads, query_length=1, key_length=max_length)
# => the query_length dimension will then be broadcasted correctly
# This is more or less identical to T5's relative position bias:
# https://github.com/huggingface/transformers/blob/f681437203baa7671de3174b0fa583c349d9d5e1/src/transformers/models/t5/modeling_t5.py#L527
arange_tensor = ((attention_mask.cumsum(dim=-1) - 1) * attention_mask)[:, None, :]
alibi = slopes[..., None] * arange_tensor
return alibi
# @torch.jit.script
def dropout_add(
x: torch.Tensor, residual: torch.Tensor, prob: float, training: bool
) -> torch.Tensor:
"""
Dropout add function
Args:
x (`torch.tensor`, *required*):
input tensor
residual (`torch.tensor`, *required*):
esidual tensor
prob (`float`, *required*):
dropout probability
training (`bool`, *required*):
training mode
"""
out = F.dropout(x, p=prob, training=training)
out = residual + out
return out
# @torch.jit.script # this is shit for unknow reasons.
def _split_heads(
fused_qkv: torch.Tensor, num_heads: int, head_dim: int
) -> Tuple[torch.Tensor, torch.Tensor, torch.Tensor]:
"""
Split the last dimension into (num_heads, head_dim) without making any copies, results share same memory
storage as `fused_qkv`
Args:
fused_qkv (`torch.tensor`, *required*): [batch_size, seq_length, num_heads * 3 * head_dim]
Returns:
query: [batch_size, seq_length, num_heads, head_dim] key: [batch_size, seq_length, num_heads, head_dim]
value: [batch_size, seq_length, num_heads, head_dim]
"""
batch_size, seq_length, three_times_hidden_size = fused_qkv.shape
fused_qkv = fused_qkv.view(batch_size, seq_length, num_heads, 3 * head_dim)
query_layer, key_layer, value_layer = fused_qkv.split(head_dim, dim=-1)
query_layer = query_layer.transpose(1, 2).reshape(
batch_size * num_heads, seq_length, head_dim
)
key_layer = key_layer.permute(0, 2, 3, 1).reshape(
batch_size * num_heads, head_dim, seq_length
)
value_layer = value_layer.transpose(1, 2).reshape(
batch_size * num_heads, seq_length, head_dim
)
return query_layer, key_layer, value_layer
# @torch.jit.script
def _merge_heads(x: torch.Tensor, num_heads: int, head_dim: int) -> torch.Tensor:
"""
Merge heads together over the last dimenstion
Args:
x: (`torch.tensor`, *required*): [batch_size * num_heads, seq_length, head_dim]
Returns:
torch.tensor: [batch_size, seq_length, num_heads * head_dim]
"""
# What we want to achieve is:
# batch_size * num_heads, seq_length, head_dim -> batch_size, seq_length, num_heads * head_dim
batch_size_and_num_heads, seq_length, _ = x.shape
batch_size = batch_size_and_num_heads // num_heads
# First view to decompose the batch size
# batch_size * num_heads, seq_length, head_dim -> batch_size, num_heads, seq_length, head_dim
x = x.view(batch_size, num_heads, seq_length, head_dim)
# batch_size, num_heads, seq_length, head_dim -> batch_size, seq_length, num_heads, head_dim
x = x.permute(0, 2, 1, 3)
# batch_size, seq_length, num_heads, head_dim -> batch_size, seq_length, num_heads * head_dim
return x.reshape(batch_size, seq_length, num_heads * head_dim)
class BloomAttention(nn.Module):
def __init__(self, prefix, config: BloomConfig, weights):
super().__init__()
self.pretraining_tp = config.pretraining_tp
self.slow_but_exact = config.slow_but_exact
self.process_group = weights.process_group
self.hidden_size = config.hidden_size
self.num_heads = config.n_head
self.head_dim = self.hidden_size // self.num_heads
self.split_size = self.hidden_size
self.hidden_dropout = config.hidden_dropout
if self.head_dim * self.num_heads != self.hidden_size:
raise ValueError(
f"`hidden_size` must be divisible by num_heads (got `hidden_size`: {self.hidden_size} and `num_heads`:"
f" {self.num_heads})."
)
# Layer-wise attention scaling
self.inv_norm_factor = 1.0 / math.sqrt(self.head_dim)
self.beta = 1.0
process_group = weights.process_group
if self.num_heads % process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {process_group.size()}"
)
self.num_heads = self.num_heads // process_group.size()
self.query_key_value = TensorParallelColumnLinear.load(
config=config,
prefix=f"{prefix}.query_key_value",
weights=weights,
bias=True,
)
self.dense = TensorParallelRowLinear.load(
config=config, prefix=f"{prefix}.dense", weights=weights, bias=True
)
self.attention_dropout = nn.Dropout(config.attention_dropout)
@staticmethod
def compute_attention(
fused_qkv: torch.Tensor,
layer_past: Optional[Tuple[torch.Tensor, torch.Tensor]],
alibi: torch.Tensor,
attention_mask: torch.Tensor,
head_mask: Optional[torch.Tensor],
beta: float,
inv_norm_factor: float,
num_heads: int,
use_cache: bool,
):
batch_size, q_length, three_times_hidden_size = fused_qkv.shape
head_dim = three_times_hidden_size // (3 * num_heads)
batch_size * num_heads
### TODO @thomasw21: this takes quite a bit of time, how do I accelerate that?
# 3 x [batch_size, seq_length, num_heads, head_dim]
(query_layer, key_layer, value_layer) = _split_heads(
fused_qkv, num_heads=num_heads, head_dim=head_dim
)
if layer_past is not None:
past_key, past_value = layer_past
# concatenate along seq_length dimension:
# - key: [batch_size * self.num_heads, head_dim, kv_length]
# - value: [batch_size * self.num_heads, kv_length, head_dim]
past_key = past_key.view(-1, *past_key.shape[-2:])
key_layer = torch.cat((past_key, key_layer), dim=2)
past_value = past_value.view(-1, *past_value.shape[-2:])
value_layer = torch.cat((past_value, value_layer), dim=1)
_, _, kv_length = key_layer.shape
if use_cache is True:
present = (key_layer, value_layer)
else:
present = None
###
# [batch_size * num_heads, q_length, kv_length]
# we use `torch.Tensor.baddbmm` instead of `torch.baddbmm` as the latter isn't supported by TorchScript v1.11
attention_scores = alibi.baddbmm(
batch1=query_layer,
batch2=key_layer,
beta=beta,
alpha=inv_norm_factor,
)
# cast attention scores to fp32, compute scaled softmax and cast back to initial dtype - [batch_size, num_heads, q_length, kv_length]
input_dtype = attention_scores.dtype
# `float16` has a minimum value of -65504.0, whereas `bfloat16` and `float32` have a minimum value of `-3.4e+38`
if input_dtype == torch.float16:
attention_scores = attention_scores.to(torch.float)
# torch.finfo not supported by torch.jit, we temporarily remplace with `-1e34`
attn_weights = attention_scores.masked_fill_(
attention_mask, torch.finfo(attention_scores.dtype).min
)
attention_probs = F.softmax(attn_weights, dim=-1, dtype=torch.float32).to(
input_dtype
)
# # [batch_size, num_heads, q_length, kv_length]
# attention_probs = self.attention_dropout(attention_probs)
if head_mask is not None:
attention_probs = attention_probs * head_mask
# matmul: [batch_size * num_heads, q_length, head_dim]
context_layer = torch.bmm(attention_probs, value_layer, out=query_layer)
# change view [batch_size, num_heads, q_length, head_dim]
context_layer = _merge_heads(
context_layer, num_heads=num_heads, head_dim=head_dim
)
return context_layer, present, attention_probs
def forward(
self,
hidden_states: torch.Tensor,
residual: torch.Tensor,
alibi: torch.Tensor,
attention_mask: torch.Tensor,
layer_past: Optional[Tuple[torch.Tensor, torch.Tensor]] = None,
head_mask: Optional[torch.Tensor] = None,
use_cache: bool = False,
output_attentions: bool = False,
):
fused_qkv = self.query_key_value(
hidden_states
) # [batch_size, seq_length, 3 x hidden_size]
batch_size, q_length, _ = fused_qkv.shape
if layer_past is not None:
past_key, past_value = layer_past
layer_past = (
past_key.view(-1, *past_key.shape[-2:]),
past_value.view(-1, *past_value.shape[-2:]),
)
if CUSTOM_KERNELS_ENABLED:
assert self.training is False, "Only foward pass was implemented"
assert (
attention_mask.shape[-1] < 4096
), "Custom kernel support only up to 4096 tokens"
(
context_layer,
present,
attention_probs,
) = fused_bloom_attention_cuda.forward(
fused_qkv,
layer_past,
alibi,
attention_mask,
head_mask,
self.beta,
self.inv_norm_factor,
self.num_heads,
use_cache,
)
else:
context_layer, present, attention_probs = self.compute_attention(
fused_qkv=fused_qkv,
layer_past=layer_past,
alibi=alibi,
attention_mask=attention_mask,
head_mask=head_mask,
beta=self.beta,
inv_norm_factor=self.inv_norm_factor,
num_heads=self.num_heads,
use_cache=use_cache,
)
# aggregate results across tp ranks. See here: https://github.com/pytorch/pytorch/issues/76232
if self.pretraining_tp > 1 and self.slow_but_exact:
slices = self.hidden_size / self.pretraining_tp
output_tensor = torch.zeros_like(context_layer)
for i in range(self.pretraining_tp):
output_tensor = output_tensor + F.linear(
context_layer[:, :, int(i * slices) : int((i + 1) * slices)],
self.dense.weight[:, int(i * slices) : int((i + 1) * slices)],
)
else:
output_tensor = self.dense(context_layer)
# output_tensor = dropout_add(output_tensor, residual, self.hidden_dropout, self.training)
output_tensor += residual
outputs = (output_tensor, present)
if output_attentions:
outputs += (attention_probs,)
return outputs
class BloomMLP(nn.Module):
def __init__(self, prefix, config: BloomConfig, weights):
super().__init__()
self.pretraining_tp = config.pretraining_tp
self.slow_but_exact = config.slow_but_exact
self.dense_h_to_4h = TensorParallelColumnLinear.load(
config=config, prefix=f"{prefix}.dense_h_to_4h", weights=weights, bias=True
)
self.dense_4h_to_h = TensorParallelRowLinear.load(
config=config, prefix=f"{prefix}.dense_4h_to_h", weights=weights, bias=True
)
self.gelu_impl = torch.nn.GELU(approximate="tanh")
self.hidden_dropout = config.hidden_dropout
def forward(
self, hidden_states: torch.Tensor, residual: torch.Tensor
) -> torch.Tensor:
hidden_states = self.gelu_impl(self.dense_h_to_4h(hidden_states))
if self.pretraining_tp > 1 and self.slow_but_exact:
intermediate_output = torch.zeros_like(residual)
slices = self.dense_4h_to_h.weight.shape[-1] / self.pretraining_tp
for i in range(self.pretraining_tp):
intermediate_output = intermediate_output + F.linear(
hidden_states[:, :, int(i * slices) : int((i + 1) * slices)],
self.dense_4h_to_h.weight[
:, int(i * slices) : int((i + 1) * slices)
],
)
else:
intermediate_output = self.dense_4h_to_h(hidden_states)
# output = dropout_add(intermediate_output, residual, self.hidden_dropout, self.training)
intermediate_output += residual
return intermediate_output
class BloomBlock(nn.Module):
def __init__(self, layer_id: int, config: BloomConfig, weights):
super().__init__()
prefix = f"h.{layer_id}"
self.input_layernorm = LayerNorm.load(
prefix=f"{prefix}.input_layernorm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.num_heads = config.n_head
self.self_attention = BloomAttention(
prefix=f"{prefix}.self_attention", config=config, weights=weights
)
self.post_attention_layernorm = LayerNorm.load(
prefix=f"{prefix}.post_attention_layernorm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.mlp = BloomMLP(prefix=f"{prefix}.mlp", config=config, weights=weights)
self.apply_residual_connection_post_layernorm = (
config.apply_residual_connection_post_layernorm
)
self.hidden_dropout = config.hidden_dropout
def forward(
self,
hidden_states: torch.Tensor,
alibi: torch.Tensor,
attention_mask: torch.Tensor,
layer_past: Optional[Tuple[torch.Tensor, torch.Tensor]] = None,
head_mask: Optional[torch.Tensor] = None,
use_cache: bool = False,
output_attentions: bool = False,
):
# hidden_states: [batch_size, seq_length, hidden_size]
# Layer norm at the beginning of the transformer layer.
layernorm_output = self.input_layernorm(hidden_states)
# Layer norm post the self attention.
if self.apply_residual_connection_post_layernorm:
residual = layernorm_output
else:
residual = hidden_states
# Self attention.
attn_outputs = self.self_attention(
layernorm_output,
residual,
layer_past=layer_past,
attention_mask=attention_mask,
alibi=alibi,
head_mask=head_mask,
use_cache=use_cache,
output_attentions=output_attentions,
)
attention_output = attn_outputs[0]
outputs = attn_outputs[1:]
layernorm_output = self.post_attention_layernorm(attention_output)
# Get residual
if self.apply_residual_connection_post_layernorm:
residual = layernorm_output
else:
residual = attention_output
# MLP.
output = self.mlp(layernorm_output, residual)
if use_cache:
outputs = (output,) + outputs
else:
outputs = (output,) + outputs[1:]
return outputs # hidden_states, present, attentions
class BloomPreTrainedModel(PreTrainedModel):
config_class = BloomConfig
base_model_prefix = "transformer"
_no_split_modules = ["BloomBlock"]
@staticmethod
def _convert_to_standard_cache(
past_key_value: Tuple[Tuple[torch.Tensor, torch.Tensor]], batch_size: int
) -> Tuple[Tuple[torch.Tensor, torch.Tensor]]:
"""
Standardizes the format of the cache so as to match most implementations, i.e. to tuple(tuple([batch_size,
num_heads, ...]))
"""
batch_size_times_num_heads, head_dim, seq_length = past_key_value[0][0].shape
num_heads = batch_size_times_num_heads // batch_size
# key: [batch_size * num_heads, head_dim, seq_length] -> [batch_size, num_heads, head_dim, seq_length]
# value: [batch_size * num_heads, seq_length, head_dim] -> [batch_size, num_heads, seq_length, head_dim]
return tuple(
(
layer_past[0].view(batch_size, num_heads, head_dim, seq_length),
layer_past[1].view(batch_size, num_heads, seq_length, head_dim),
)
for layer_past in past_key_value
)
@staticmethod
def _convert_to_bloom_cache(
past_key_value: Tuple[Tuple[torch.Tensor, torch.Tensor]]
) -> Tuple[Tuple[torch.Tensor, torch.Tensor]]:
"""
Converts the cache to the format expected by Bloom, i.e. to tuple(tuple([batch_size * num_heads, ...]))
"""
batch_size, num_heads, head_dim, seq_length = past_key_value[0][0].shape
batch_size_times_num_heads = batch_size * num_heads
# key: [batch_size, num_heads, head_dim, seq_length] -> [batch_size * num_heads, head_dim, seq_length]
# value: [batch_size, num_heads, seq_length, head_dim] -> [batch_size * num_heads, seq_length, head_dim]
return tuple(
(
layer_past[0].view(batch_size_times_num_heads, head_dim, seq_length),
layer_past[1].view(batch_size_times_num_heads, seq_length, head_dim),
)
for layer_past in past_key_value
)
class BloomModel(BloomPreTrainedModel):
def __init__(self, config: BloomConfig, weights):
super().__init__(config)
self.embed_dim = config.hidden_size
self.num_heads = config.n_head
process_group = weights.process_group
self.tp_rank = process_group.rank()
self.tp_world_size = process_group.size()
self.word_embeddings = TensorParallelEmbedding(
prefix="word_embeddings", weights=weights
)
self.word_embeddings_layernorm = LayerNorm.load(
prefix="word_embeddings_layernorm",
weights=weights,
eps=config.layer_norm_epsilon,
)
# Transformer blocks
self.h = nn.ModuleList(
[
BloomBlock(layer_id=layer_id, config=config, weights=weights)
for layer_id in range(config.num_hidden_layers)
]
)
# Final Layer Norm
self.ln_f = LayerNorm.load(
prefix="ln_f", weights=weights, eps=config.layer_norm_epsilon
)
def _prepare_attn_mask(
self,
attention_mask: torch.Tensor,
input_shape: Tuple[int, int],
past_key_values_length: int,
) -> torch.BoolTensor:
# create causal mask
# [batch_size, seq_length] -> [batch_size, tgt_length, src_length]
combined_attention_mask = None
device = attention_mask.device
_, src_length = input_shape
if src_length > 1:
combined_attention_mask = _make_causal_mask(
input_shape,
device=device,
past_key_values_length=past_key_values_length,
)
# [batch_size, seq_length] -> [batch_size, tgt_length, src_length]
expanded_attn_mask = _expand_mask(attention_mask, tgt_length=src_length)
combined_attention_mask = (
expanded_attn_mask
if combined_attention_mask is None
else expanded_attn_mask | combined_attention_mask
)
return combined_attention_mask
def set_input_embeddings(self, new_embeddings: torch.Tensor):
self.word_embeddings = new_embeddings
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
**deprecated_arguments,
) -> Union[Tuple[torch.Tensor, ...], BaseModelOutputWithPastAndCrossAttentions]:
if deprecated_arguments.pop("position_ids", False) is not False:
# `position_ids` could have been `torch.Tensor` or `None` so defaulting pop to `False` allows to detect if users were passing explicitly `None`
warnings.warn(
"`position_ids` have no functionality in BLOOM and will be removed in v5.0.0. You can safely ignore"
" passing `position_ids`.",
FutureWarning,
)
if len(deprecated_arguments) > 0:
raise ValueError(f"Got unexpected arguments: {deprecated_arguments}")
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
if input_ids is not None and inputs_embeds is not None:
raise ValueError(
"You cannot specify both input_ids and inputs_embeds at the same time"
)
elif input_ids is not None:
batch_size, seq_length = input_ids.shape
elif inputs_embeds is not None:
batch_size, seq_length, _ = inputs_embeds.shape
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
if past_key_values is None:
past_key_values = tuple([None] * len(self.h))
# Prepare head mask if needed
# 1.0 in head_mask indicate we keep the head
# attention_probs has shape batch_size x num_heads x N x N
# head_mask has shape n_layer x batch x num_heads x N x N
head_mask = self.get_head_mask(head_mask, self.config.n_layer)
if inputs_embeds is None:
inputs_embeds = self.word_embeddings(input_ids)
hidden_states = self.word_embeddings_layernorm(inputs_embeds)
presents = () if use_cache else None
all_self_attentions = () if output_attentions else None
all_hidden_states = () if output_hidden_states else None
# Compute alibi tensor: check build_alibi_tensor documentation
seq_length_with_past = seq_length
past_key_values_length = 0
if past_key_values[0] is not None:
past_key_values_length = past_key_values[0][0].shape[-1]
seq_length_with_past = seq_length_with_past + past_key_values_length
if attention_mask is None:
attention_mask = torch.ones(
(batch_size, seq_length_with_past), device=hidden_states.device
)
else:
attention_mask = attention_mask.to(hidden_states.device)
alibi = build_alibi_tensor(attention_mask, self.num_heads)
causal_mask = self._prepare_attn_mask(
attention_mask,
input_shape=(batch_size, seq_length),
past_key_values_length=past_key_values_length,
)
if hasattr(self, "tp_rank"):
assert self.num_heads % self.tp_world_size == 0
block_size = self.num_heads // self.tp_world_size
alibi = alibi[
:, self.tp_rank * block_size : (self.tp_rank + 1) * block_size
]
alibi = alibi.reshape(batch_size * block_size, 1, seq_length_with_past)
causal_mask = torch.repeat_interleave(causal_mask, block_size, dim=0)
else:
alibi = alibi.reshape(batch_size * self.num_heads, 1, seq_length_with_past)
causal_mask = torch.repeat_interleave(causal_mask, self.num_heads, dim=0)
alibi = alibi.to(hidden_states.dtype)
for i, (block, layer_past) in enumerate(zip(self.h, past_key_values)):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
outputs = block(
hidden_states,
layer_past=layer_past,
attention_mask=causal_mask,
head_mask=head_mask[i],
use_cache=use_cache,
output_attentions=output_attentions,
alibi=alibi,
)
hidden_states = outputs[0]
if use_cache is True:
presents = presents + (outputs[1],)
if output_attentions:
all_self_attentions = all_self_attentions + (
outputs[2 if use_cache else 1],
)
# Add last hidden state
hidden_states = self.ln_f(hidden_states)
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [
hidden_states,
presents,
all_hidden_states,
all_self_attentions,
]
if v is not None
)
return BaseModelOutputWithPastAndCrossAttentions(
last_hidden_state=hidden_states,
past_key_values=presents,
hidden_states=all_hidden_states,
attentions=all_self_attentions,
)
class BloomForCausalLM(BloomPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.transformer = BloomModel(config, weights)
self.lm_head = TensorParallelHead.load(
config,
prefix="word_embeddings",
weights=weights,
)
def prepare_inputs_for_generation(
self,
input_ids: torch.LongTensor,
past_key_values: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
**kwargs,
) -> dict:
# only last token for input_ids if past is not None
if past_key_values:
input_ids = input_ids[:, -1].unsqueeze(-1)
# the cache may be in the stardard format (e.g. in contrastive search), convert to bloom's format if needed
if past_key_values[0][0].shape[0] == input_ids.shape[0]:
past_key_values = self._convert_to_bloom_cache(past_key_values)
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
else:
model_inputs = {"input_ids": input_ids}
model_inputs.update(
{
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
"attention_mask": attention_mask,
}
)
return model_inputs
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor, torch.Tensor], ...]] = None,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
inputs_embeds: Optional[torch.Tensor] = None,
labels: Optional[torch.Tensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
**deprecated_arguments,
) -> Union[Tuple[torch.Tensor], CausalLMOutputWithCrossAttentions]:
r"""
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for language modeling. Note that the labels **are shifted** inside the model, i.e. you can set
`labels = input_ids` Indices are selected in `[-100, 0, ..., config.vocab_size]` All labels set to `-100`
are ignored (masked), the loss is only computed for labels in `[0, ..., config.vocab_size]`
"""
if deprecated_arguments.pop("position_ids", False) is not False:
# `position_ids` could have been `torch.Tensor` or `None` so defaulting pop to `False` allows to detect if users were passing explicitly `None`
warnings.warn(
"`position_ids` have no functionality in BLOOM and will be removed in v5.0.0. You can safely ignore"
" passing `position_ids`.",
FutureWarning,
)
if len(deprecated_arguments) > 0:
raise ValueError(f"Got unexpected arguments: {deprecated_arguments}")
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
transformer_outputs = self.transformer(
input_ids,
past_key_values=past_key_values,
attention_mask=attention_mask,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = transformer_outputs[0]
lm_logits = self.lm_head(hidden_states)
loss = None
if not return_dict:
output = (lm_logits,) + transformer_outputs[1:]
return ((loss,) + output) if loss is not None else output
return CausalLMOutputWithCrossAttentions(
loss=loss,
logits=lm_logits,
past_key_values=transformer_outputs.past_key_values,
hidden_states=transformer_outputs.hidden_states,
attentions=transformer_outputs.attentions,
)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/flash_llama_modeling.py | # coding=utf-8
# Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
#
# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
# and OPT implementations in this library. It has been modified from its
# original forms to accommodate minor architectural differences compared
# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import torch
import torch.distributed
from torch import nn
from transformers.activations import ACT2FN
from transformers.configuration_utils import PretrainedConfig
from typing import Optional, List, Tuple
# Flash attention imports
import dropout_layer_norm
# vllm imports
import vllm_cache_ops
import vllm_attention_ops
from text_generation_server.utils.flash_attn import attention
from text_generation_server.utils.layers import (
TensorParallelRowLinear,
TensorParallelColumnLinear,
TensorParallelEmbedding,
PositionRotaryEmbedding,
TensorParallelHead,
get_linear,
)
class LlamaConfig(PretrainedConfig):
def __init__(
self,
vocab_size=32000,
hidden_size=4096,
intermediate_size=11008,
num_hidden_layers=32,
num_attention_heads=32,
num_key_value_heads=None,
hidden_act="silu",
max_position_embeddings=2048,
initializer_range=0.02,
rms_norm_eps=1e-6,
use_cache=True,
pad_token_id=0,
bos_token_id=1,
eos_token_id=2,
pretraining_tp=1,
tie_word_embeddings=False,
rope_scaling=None,
**kwargs,
):
self.vocab_size = vocab_size
self.max_position_embeddings = max_position_embeddings
self.hidden_size = hidden_size
self.intermediate_size = intermediate_size
self.num_hidden_layers = num_hidden_layers
self.num_attention_heads = num_attention_heads
# for backward compatibility
if num_key_value_heads is None:
num_key_value_heads = num_attention_heads
self.num_key_value_heads = num_key_value_heads
self.hidden_act = hidden_act
self.initializer_range = initializer_range
self.rms_norm_eps = rms_norm_eps
self.pretraining_tp = pretraining_tp
self.use_cache = use_cache
self.rope_scaling = rope_scaling
super().__init__(
pad_token_id=pad_token_id,
bos_token_id=bos_token_id,
eos_token_id=eos_token_id,
tie_word_embeddings=tie_word_embeddings,
**kwargs,
)
class LlamaRMSNorm(nn.Module):
def __init__(self, prefix, weights, eps=1e-6):
"""
LlamaRMSNorm is equivalent to T5LayerNorm
"""
super().__init__()
weight = weights.get_tensor(f"{prefix}.weight")
self.weight = nn.Parameter(weight)
self.variance_epsilon = eps
def forward(self, hidden_states, residual=None):
if hidden_states.shape[-1] > 8192:
if residual is not None:
hidden_states += residual
residual = hidden_states
hidden_states = hidden_states.to(torch.float32)
variance = hidden_states.pow(2).mean(-1, keepdim=True)
hidden_states = hidden_states * torch.rsqrt(
variance + self.variance_epsilon
)
# convert into half-precision if necessary
if self.weight.dtype in [torch.float16, torch.bfloat16]:
hidden_states = hidden_states.to(self.weight.dtype)
return self.weight * hidden_states, residual
else:
# faster post attention rms norm
normed_hidden_states, res, *rest = dropout_layer_norm.dropout_add_ln_fwd(
hidden_states,
residual,
self.weight,
None,
None,
None,
None,
None,
0.0,
self.variance_epsilon,
1.0,
0,
None,
False,
True, # Activate RMSNorm
)
if res is None:
res = hidden_states
return normed_hidden_states, res
def _load_gqa(config, prefix: str, weights):
assert config.hidden_size % config.num_attention_heads == 0
assert config.num_attention_heads % weights.process_group.size() == 0
weight = weights.get_multi_weights_col(
prefixes=[f"{prefix}.q_proj", f"{prefix}.k_proj", f"{prefix}.v_proj"],
quantize=config.quantize,
dim=0,
)
if config.quantize != "gptq":
weight = weight.to(dtype=weights.dtype).to(device=weights.device)
head_size = config.hidden_size // config.num_attention_heads
num_heads = config.num_attention_heads // weights.process_group.size()
num_key_value_heads = config.num_key_value_heads // weights.process_group.size()
assert list(weight.shape) == [
(num_heads + 2 * num_key_value_heads) * head_size,
config.hidden_size,
], f"{list(weight.shape)} != {[(num_heads + 2 * config.num_key_value_heads) * head_size, config.hidden_size]}"
return TensorParallelColumnLinear(
get_linear(weight, bias=None, quantize=config.quantize)
)
class FlashLlamaAttention(torch.nn.Module):
def __init__(
self,
prefix: str,
config,
weights,
):
super().__init__()
self.num_heads = config.num_attention_heads
self.hidden_size = config.hidden_size
self.head_size = self.hidden_size // self.num_heads
# self.rotary_emb = PositionRotaryEmbedding.load(
# config=config, prefix=f"{prefix}.rotary_emb", weights=weights
# )
self.rotary_emb = PositionRotaryEmbedding.static(
config=config, dim=self.head_size, base=10000.0, device=weights.device
)
self.softmax_scale = self.head_size**-0.5
if self.num_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_heads = self.num_heads // weights.process_group.size()
self.num_key_value_heads = (
config.num_key_value_heads // weights.process_group.size()
)
if config.num_attention_heads != config.num_key_value_heads:
self.query_key_value = _load_gqa(config, prefix, weights)
else:
self.query_key_value = TensorParallelColumnLinear.load_multi(
config,
prefixes=[f"{prefix}.q_proj", f"{prefix}.k_proj", f"{prefix}.v_proj"],
dim=0,
weights=weights,
bias=False,
)
self.o_proj = TensorParallelRowLinear.load(
config,
prefix=f"{prefix}.o_proj",
weights=weights,
bias=False,
)
self.num_groups = self.num_heads // self.num_key_value_heads
self.kv_head_mapping = torch.arange(
0, self.num_key_value_heads, dtype=torch.int32, device=weights.device
).repeat_interleave(self.num_groups)
def forward(
self,
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
qkv = self.query_key_value(hidden_states)
query, kv = qkv.split(
[
self.head_size * self.num_heads,
2 * self.head_size * self.num_key_value_heads,
],
dim=1,
)
query = query.view(-1, self.num_heads, self.head_size)
kv = kv.view(-1, 2, self.num_key_value_heads, self.head_size)
self.rotary_emb(query, cos, sin)
self.rotary_emb(torch.select(kv, dim=1, index=0), cos, sin)
vllm_cache_ops.reshape_and_cache(
kv[:, 0], kv[:, 1], kv_cache[0], kv_cache[1], slots
)
# output tensor
attn_output = torch.empty_like(query)
# Prefill
if cu_seqlen_prefill is not None:
# flash attention
attention(
query,
torch.select(kv, dim=1, index=0),
torch.select(kv, dim=1, index=1),
attn_output,
cu_seqlen_prefill,
max_s,
self.softmax_scale,
)
# Decode
else:
# kv_cache[1] => [num_blocks, num_heads, head_size, block_size]
block_size = kv_cache[1].shape[3]
vllm_attention_ops.single_query_cached_kv_attention(
attn_output,
query,
kv_cache[0],
kv_cache[1],
self.kv_head_mapping,
self.softmax_scale,
block_tables,
input_lengths,
block_size,
max_s,
)
return self.o_proj(attn_output.view(-1, self.num_heads * self.head_size))
class LlamaMLP(nn.Module):
def __init__(self, prefix, config, weights):
super().__init__()
act = config.hidden_act
self.act = (
ACT2FN[act]
if "gelu" not in act
else lambda x: torch.nn.functional.gelu(
x,
approximate="tanh"
if act in ["gelu_fast", "gelu_pytorch_tanh"]
else "none",
)
)
# Fuse gate and up proj
self.gate_up_proj = TensorParallelColumnLinear.load_multi(
config,
prefixes=[f"{prefix}.gate_proj", f"{prefix}.up_proj"],
weights=weights,
dim=0,
bias=False,
)
self.down_proj = TensorParallelRowLinear.load(
config,
prefix=f"{prefix}.down_proj",
weights=weights,
bias=False,
)
self.intermediate_size = (
config.intermediate_size // weights.process_group.size()
)
def forward(self, hidden_states):
gate_up_states = self.gate_up_proj(hidden_states)
gate_up_states = gate_up_states.view(-1, 2, self.intermediate_size)
return self.down_proj(self.act(gate_up_states[:, 0]) * gate_up_states[:, 1])
class FlashLlamaLayer(nn.Module):
def __init__(self, layer_id, config, weights):
super().__init__()
prefix = f"model.layers.{layer_id}"
self.self_attn = FlashLlamaAttention(
prefix=f"{prefix}.self_attn", config=config, weights=weights
)
self.mlp = LlamaMLP(prefix=f"{prefix}.mlp", config=config, weights=weights)
self.input_layernorm = LlamaRMSNorm(
prefix=f"{prefix}.input_layernorm", weights=weights, eps=config.rms_norm_eps
)
self.post_attention_layernorm = LlamaRMSNorm(
prefix=f"{prefix}.post_attention_layernorm",
weights=weights,
eps=config.rms_norm_eps,
)
def forward(
self,
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
normed_hidden_states, res = self.input_layernorm(hidden_states, residual)
# Self Attention
attn_output = self.self_attn(
normed_hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
# faster post attention rms norm
normed_attn_res_output, attn_res = self.post_attention_layernorm(
attn_output, res
)
mlp_output = self.mlp(normed_attn_res_output)
return mlp_output, attn_res
class FlashLlamaModel(torch.nn.Module):
def __init__(self, config, weights):
super().__init__()
process_group = weights.process_group
self.tp_rank = process_group.rank()
self.tp_world_size = process_group.size()
self.embed_tokens = TensorParallelEmbedding(
prefix="model.embed_tokens", weights=weights
)
self.layers = nn.ModuleList(
[
FlashLlamaLayer(
layer_id,
config,
weights,
)
for layer_id in range(config.num_hidden_layers)
]
)
self.norm = LlamaRMSNorm(
prefix="model.norm", weights=weights, eps=config.rms_norm_eps
)
self.gradient_checkpointing = False
self.head_size = self.layers[0].self_attn.head_size
self.num_heads = self.layers[0].self_attn.num_heads
self.num_key_value_heads = self.layers[0].self_attn.num_key_value_heads
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
) -> torch.Tensor:
hidden_states = self.embed_tokens(input_ids)
# Get rotary cos and sin for this forward
# Avoid to index in each layer
cos, sin = self.layers[0].self_attn.rotary_emb.get_cos_sin(
position_ids, max_s, hidden_states.dtype
)
residual = None
for i, layer in enumerate(self.layers):
hidden_states, residual = layer(
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache[i],
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, _ = self.norm(hidden_states, residual)
return hidden_states
class FlashLlamaForCausalLM(torch.nn.Module):
def __init__(self, config, weights):
super().__init__()
self.model = FlashLlamaModel(config, weights)
self.lm_head = TensorParallelHead.load(
config,
prefix="lm_head",
weights=weights,
)
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
lm_head_indices: Optional[torch.Tensor] = None,
) -> torch.Tensor:
hidden_states = self.model(
input_ids,
position_ids,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
if lm_head_indices is not None:
hidden_states = hidden_states[lm_head_indices]
logits = self.lm_head(hidden_states)
return logits
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/flash_neox_modeling.py | # coding=utf-8
# Copyright 2022 EleutherAI and the HuggingFace Inc. team. All rights reserved.
#
# This code is based on EleutherAI's GPT-NeoX library and the GPT-NeoX
# and OPT implementations in this library. It has been modified from its
# original forms to accommodate minor architectural differences compared
# to GPT-NeoX and OPT used by the Meta AI team that trained the model.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import torch
import torch.distributed
from torch import nn
from transformers.activations import ACT2FN
from transformers.modeling_utils import PreTrainedModel
from transformers.models.gpt_neox import GPTNeoXConfig
from typing import Optional, List, Tuple
# vllm imports
import vllm_cache_ops
import vllm_attention_ops
from text_generation_server.utils.flash_attn import attention
from text_generation_server.utils.layers import (
TensorParallelRowLinear,
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelHead,
FastLayerNorm,
PositionRotaryEmbedding,
get_linear,
)
def load_row(config, prefix: str, weights, bias: bool):
weight = weights.get_multi_weights_row(prefix, quantize=config.quantize)
if bias and weights.process_group.rank() == 0:
# Rank is only on the first rank process
bias = weights.get_tensor(f"{prefix}.bias")
else:
bias = None
linear = get_linear(weight, bias, config.quantize)
if config.use_parallel_residual:
return linear
else:
return TensorParallelRowLinear(linear, process_group=weights.process_group)
def load_qkv(config, prefix: str, weights, num_heads, head_size, hidden_size):
weight = weights.get_multi_weights_col([prefix], quantize=config.quantize, dim=0)
if isinstance(weight, torch.Tensor):
# Only on non quantized versions
weight = (
weight.view(
num_heads,
3,
head_size,
hidden_size,
)
.permute(1, 0, 2, 3)
.reshape(-1, hidden_size)
)
bias = weights.get_sharded(f"{prefix}.bias", dim=0)
bias = bias.view(num_heads, 3, head_size).permute(1, 0, 2).reshape(-1)
linear = get_linear(weight, bias, config.quantize)
if config.use_parallel_residual:
return linear
else:
return TensorParallelColumnLinear(linear)
class FlashNeoxAttention(torch.nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
num_heads = config.num_attention_heads
hidden_size = config.hidden_size
self.num_heads = num_heads
self.hidden_size = hidden_size
self.head_size = hidden_size // num_heads
if self.num_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_heads = self.num_heads // weights.process_group.size()
self.rotary_emb = PositionRotaryEmbedding.load(
config=config, prefix=f"{prefix}.rotary_emb", weights=weights
)
self.softmax_scale = self.head_size ** (-0.5)
self.query_key_value = load_qkv(
config,
prefix=f"{prefix}.query_key_value",
weights=weights,
num_heads=self.num_heads,
head_size=self.head_size,
hidden_size=self.hidden_size,
)
self.dense = load_row(
config, prefix=f"{prefix}.dense", weights=weights, bias=True
)
self.kv_head_mapping = torch.arange(
0, self.num_heads, dtype=torch.int32, device=weights.device
)
def forward(
self,
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
qkv = self.query_key_value(hidden_states)
qkv = qkv.view(-1, 3, self.num_heads, self.head_size)
# Inplace rotary
self.rotary_emb(qkv[:, 0], cos, sin)
self.rotary_emb(qkv[:, 1], cos, sin)
vllm_cache_ops.reshape_and_cache(
qkv[:, 1], qkv[:, 2], kv_cache[0], kv_cache[1], slots
)
# output tensor
attn_output = torch.empty_like(qkv[:, 0])
# Prefill
if cu_seqlen_prefill is not None:
# flash attention
attention(
qkv[:, 0],
qkv[:, 1],
qkv[:, 2],
attn_output,
cu_seqlen_prefill,
max_s,
self.softmax_scale,
)
# Decode
else:
# kv_cache[1] => [num_blocks, num_heads, head_size, block_size]
block_size = kv_cache[1].shape[3]
vllm_attention_ops.single_query_cached_kv_attention(
attn_output,
qkv[:, 0],
kv_cache[0],
kv_cache[1],
self.kv_head_mapping,
self.softmax_scale,
block_tables,
input_lengths,
block_size,
max_s,
)
return self.dense(attn_output.view(-1, self.num_heads * self.head_size))
class FlashMLP(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
act = config.hidden_act
self.act = (
ACT2FN[act]
if "gelu" not in act
else lambda x: torch.nn.functional.gelu(
x,
approximate="tanh"
if act in ["gelu_fast", "gelu_pytorch_tanh"]
else "none",
)
)
self.dense_h_to_4h = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.dense_h_to_4h", weights=weights, bias=True
)
self.dense_4h_to_h = load_row(
config, prefix=f"{prefix}.dense_4h_to_h", weights=weights, bias=True
)
def forward(self, hidden_states):
hidden_states = self.dense_h_to_4h(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.dense_4h_to_h(hidden_states)
return hidden_states
class FlashNeoXLayer(nn.Module):
def __init__(self, layer_id, config, weights):
super().__init__()
layer_norm_eps = config.layer_norm_eps
prefix = f"gpt_neox.layers.{layer_id}"
self.use_parallel_residual = config.use_parallel_residual
self.input_layernorm = FastLayerNorm.load(
prefix=f"{prefix}.input_layernorm", weights=weights, eps=layer_norm_eps
)
self.post_attention_layernorm = FastLayerNorm.load(
prefix=f"{prefix}.post_attention_layernorm",
weights=weights,
eps=layer_norm_eps,
)
self.attention = FlashNeoxAttention(
config, prefix=f"{prefix}.attention", weights=weights
)
self.mlp = FlashMLP(config, prefix=f"{prefix}.mlp", weights=weights)
self.process_group = weights.process_group
def forward(
self,
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
if self.use_parallel_residual:
ln1_hidden_states, _ = self.input_layernorm(hidden_states)
attn_output = self.attention(
ln1_hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
ln2_hidden_states, _ = self.post_attention_layernorm(hidden_states)
mlp_output = self.mlp(ln2_hidden_states)
intermediate = mlp_output + attn_output
if self.process_group.size() > 1:
torch.distributed.all_reduce(intermediate, group=self.process_group)
return intermediate + hidden_states, None
else:
hidden_states, residual = self.input_layernorm(hidden_states, residual)
hidden_states = self.attention(
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, residual = self.post_attention_layernorm(
hidden_states, residual
)
mlp_output = self.mlp(hidden_states)
return mlp_output, residual
class FlashGPTNeoXPreTrainedModel(PreTrainedModel):
config_class = GPTNeoXConfig
base_model_prefix = "gpt_neox"
supports_gradient_checkpointing = False
_no_split_modules = None
class FlashGPTNeoXModel(FlashGPTNeoXPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.config = config
self.embed_in = TensorParallelEmbedding(
prefix="gpt_neox.embed_in", weights=weights
)
self.layers = nn.ModuleList(
[
FlashNeoXLayer(layer_id, config, weights)
for layer_id in range(config.num_hidden_layers)
]
)
self.final_layer_norm = FastLayerNorm.load(
prefix="gpt_neox.final_layer_norm",
weights=weights,
eps=config.layer_norm_eps,
)
self.gradient_checkpointing = False
self.head_size = self.layers[0].attention.head_size
self.num_heads = self.layers[0].attention.num_heads
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
) -> torch.Tensor:
hidden_states = self.embed_in(input_ids)
# Get rotary cos and sin for this forward
# Avoid to index in each layer
cos, sin = self.layers[0].attention.rotary_emb.get_cos_sin(
position_ids, max_s, hidden_states.dtype
)
residual = None
for i, layer in enumerate(self.layers):
hidden_states, residual = layer(
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache[i],
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, _ = self.final_layer_norm(hidden_states, residual)
return hidden_states
class FlashGPTNeoXForCausalLM(FlashGPTNeoXPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.gpt_neox = FlashGPTNeoXModel(config, weights)
self.embed_out = TensorParallelHead.load(
config, prefix="embed_out", weights=weights
)
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
lm_head_indices: Optional[torch.Tensor] = None,
) -> torch.Tensor:
hidden_states = self.gpt_neox(
input_ids,
position_ids,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
if lm_head_indices is not None:
hidden_states = hidden_states[lm_head_indices]
logits = self.embed_out(hidden_states)
return logits
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/flash_rw_modeling.py | import torch
import torch.distributed
from torch import nn
from transformers.modeling_utils import PreTrainedModel
from transformers.configuration_utils import PretrainedConfig
from typing import Optional, List, Tuple
# vllm imports
import vllm_cache_ops
import vllm_attention_ops
from text_generation_server.utils.flash_attn import attention
from text_generation_server.utils.layers import (
TensorParallelRowLinear,
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelHead,
FastLayerNorm,
PositionRotaryEmbedding,
get_linear,
)
def load_row(config, prefix: str, weights, bias: bool):
weight = weights.get_multi_weights_row(prefix, quantize=config.quantize)
if bias and weights.process_group.rank() == 0:
# Rank is only on the first rank process
bias = weights.get_tensor(f"{prefix}.bias")
else:
bias = None
linear = get_linear(weight, bias, config.quantize)
if config.parallel_attn:
return linear
else:
return TensorParallelRowLinear(linear, process_group=weights.process_group)
class RWConfig(PretrainedConfig):
attribute_map = {
"num_hidden_layers": "n_layer",
"num_attention_heads": "n_head",
}
def __init__(
self,
model_type="RefinedWeb",
vocab_size=250880,
hidden_size=64,
num_hidden_layers=None,
num_attention_heads=None,
layer_norm_epsilon=1e-5,
initializer_range=0.02,
use_cache=True,
bos_token_id=1,
eos_token_id=2,
hidden_dropout=0.0,
attention_dropout=0.0,
num_kv_heads=None,
multi_query=False,
alibi=False,
new_decoder_architecture=None,
bias=False,
parallel_attn=False,
**kwargs,
):
if alibi:
raise NotImplementedError(
"alibi is not supported by this version of the model"
)
self.model_type = model_type
self.alibi = False
self.rotary = True
self.vocab_size = vocab_size
# Backward compatibility with n_embed kwarg
n_embed = kwargs.pop("n_embed", None)
self.hidden_size = hidden_size if n_embed is None else n_embed
self.n_layer = (
num_hidden_layers
if num_hidden_layers is not None
else kwargs.pop("n_layer", 2)
)
self.n_head = (
num_attention_heads
if num_attention_heads is not None
else kwargs.pop("n_head", 8)
)
self.layer_norm_epsilon = layer_norm_epsilon
self.initializer_range = initializer_range
self.use_cache = use_cache
self.hidden_dropout = hidden_dropout
self.attention_dropout = attention_dropout
self.bias = bias
self.parallel_attn = parallel_attn
self.bos_token_id = bos_token_id
self.eos_token_id = eos_token_id
if num_kv_heads is not None:
self.n_head_kv = num_kv_heads
else:
old_n_head_kv = kwargs.pop("n_head_kv", None)
if old_n_head_kv is not None:
self.n_head_kv = old_n_head_kv
else:
self.n_head_kv = 1 if multi_query else self.n_head
if new_decoder_architecture is not None:
self.new_decoder_architecture = new_decoder_architecture
elif model_type == "RefinedWeb":
self.new_decoder_architecture = True
else:
self.new_decoder_architecture = False
super().__init__(bos_token_id=bos_token_id, eos_token_id=eos_token_id, **kwargs)
class FlashRWAttention(torch.nn.Module):
def __init__(
self,
config,
prefix,
weights,
):
super().__init__()
self.num_heads = config.n_head
self.num_heads_kv = config.n_head_kv
self.hidden_size = config.hidden_size
self.head_size = self.hidden_size // self.num_heads
self.rotary_emb = PositionRotaryEmbedding.static(
config=config, dim=self.head_size, base=10000.0, device=weights.device
)
self.softmax_scale = self.head_size ** (-0.5)
if self.num_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_heads = self.num_heads // weights.process_group.size()
self.query_key_value = TensorParallelColumnLinear.load(
config,
prefix=f"{prefix}.query_key_value",
weights=weights,
bias=config.bias,
)
self.dense = load_row(
config, prefix=f"{prefix}.dense", weights=weights, bias=config.bias
)
if self.num_heads_kv == 1:
self.kv_head_mapping = torch.zeros(
self.num_heads, dtype=torch.int32, device=weights.device
)
else:
self.kv_head_mapping = torch.arange(
0, self.num_heads, dtype=torch.int32, device=weights.device
)
def forward(
self,
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
qkv = self.query_key_value(hidden_states)
# Split query from key_value
query, kv = qkv.split(
[self.head_size * self.num_heads, 2 * self.head_size * self.num_heads_kv],
dim=1,
)
# Prepare query and key_value for indexing
query = query.view(-1, self.num_heads, self.head_size)
kv = kv.view(-1, 2, self.num_heads_kv, self.head_size)
# Inplace rotary
self.rotary_emb(query, cos, sin)
self.rotary_emb(torch.select(kv, dim=1, index=0), cos, sin)
vllm_cache_ops.reshape_and_cache(
kv[:, 0], kv[:, 1], kv_cache[0], kv_cache[1], slots
)
# output
attn_output = torch.empty_like(query)
# Prefill
if cu_seqlen_prefill is not None:
# flash attention
attention(
query,
torch.select(kv, dim=1, index=0),
torch.select(kv, dim=1, index=1),
attn_output,
cu_seqlen_prefill,
max_s,
self.softmax_scale,
)
# Decode
else:
# kv_cache[1] => [num_blocks, num_heads_kv, head_size, block_size]
block_size = kv_cache[1].shape[3]
vllm_attention_ops.single_query_cached_kv_attention(
attn_output,
query,
kv_cache[0],
kv_cache[1],
self.kv_head_mapping,
self.softmax_scale,
block_tables,
input_lengths,
block_size,
max_s,
)
return self.dense(attn_output.view(-1, self.num_heads * self.head_size))
class FlashRWLargeAttention(torch.nn.Module):
def __init__(
self,
config,
prefix,
weights,
):
super().__init__()
hidden_size = config.hidden_size
num_heads = config.n_head
num_heads_kv = config.n_head_kv
self.hidden_size = hidden_size
self.head_size = hidden_size // num_heads
self.rotary_emb = PositionRotaryEmbedding.static(
config=config, dim=self.head_size, base=10000.0, device=weights.device
)
self.softmax_scale = self.head_size ** (-0.5)
self.num_groups = num_heads // (num_heads_kv * 2)
self.num_heads = num_heads // self.num_groups
self.num_heads_kv = num_heads_kv // self.num_groups
process_group = weights.process_group
if process_group.size() > self.num_groups:
raise NotImplementedError(
f"Tensor Parallelism is not implemented for world_size > n groups"
)
if self.num_groups % process_group.size() != 0:
raise NotImplementedError(
f"Tensor Parallelism is not implemented for {self.num_groups} not divisible by {process_group.size()}"
)
self.num_groups = self.num_groups // process_group.size()
self.query_key_value = TensorParallelColumnLinear.load(
config,
prefix=f"{prefix}.query_key_value",
weights=weights,
bias=config.bias,
)
self.dense = load_row(
config, prefix=f"{prefix}.dense", weights=weights, bias=config.bias
)
self.kv_head_mapping = torch.arange(
0, self.num_groups, dtype=torch.int32, device=weights.device
).repeat_interleave(self.num_heads)
def forward(
self,
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
qkv = self.query_key_value(hidden_states)
qkv = qkv.view(-1, self.num_groups, self.num_heads + 2, self.head_size)
# Split on group dimension
query, kv = qkv.split(
[self.num_heads, 2],
dim=2,
)
# Merge groups and heads
query = query.reshape(-1, self.num_groups * self.num_heads, self.head_size)
# Inplace rotary
self.rotary_emb(query, cos, sin)
self.rotary_emb(torch.select(kv, dim=2, index=0), cos, sin)
vllm_cache_ops.reshape_and_cache(
kv[:, :, 0].contiguous(),
kv[:, :, 1].contiguous(),
kv_cache[0],
kv_cache[1],
slots,
)
# output
attn_output = torch.empty_like(query)
# Prefill
if cu_seqlen_prefill is not None:
# flash attention
attention(
query,
torch.select(kv, dim=2, index=0),
torch.select(kv, dim=2, index=1),
attn_output,
cu_seqlen_prefill,
max_s,
self.softmax_scale,
)
# Decode
else:
# kv_cache[1] => [num_blocks, num_groups, head_size, block_size]
block_size = kv_cache[1].shape[3]
vllm_attention_ops.single_query_cached_kv_attention(
attn_output,
query,
kv_cache[0],
kv_cache[1],
self.kv_head_mapping,
self.softmax_scale,
block_tables,
input_lengths,
block_size,
max_s,
)
return self.dense(
attn_output.view(-1, self.num_groups * self.num_heads * self.head_size)
)
class FlashMLP(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
self.act = torch.nn.functional.gelu
self.dense_h_to_4h = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.dense_h_to_4h", weights=weights, bias=config.bias
)
self.dense_4h_to_h = load_row(
config, prefix=f"{prefix}.dense_4h_to_h", weights=weights, bias=config.bias
)
def forward(self, hidden_states):
hidden_states = self.dense_h_to_4h(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.dense_4h_to_h(hidden_states)
return hidden_states
class FlashRWLayer(nn.Module):
def __init__(
self,
layer_id,
config,
weights,
):
super().__init__()
parallel_attn = config.parallel_attn
self.parallel_attn = parallel_attn
prefix = f"transformer.h.{layer_id}"
self.input_layernorm = FastLayerNorm.load(
prefix=f"{prefix}.input_layernorm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.self_attention = FlashRWAttention(
config,
prefix=f"{prefix}.self_attention",
weights=weights,
)
self.post_attention_layernorm = (
FastLayerNorm.load(
prefix=f"{prefix}.post_attention_layernorm",
weights=weights,
eps=config.layer_norm_epsilon,
)
if not parallel_attn
else None
)
self.mlp = FlashMLP(
config,
prefix=f"{prefix}.mlp",
weights=weights,
)
self.process_group = weights.process_group
def forward(
self,
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
if self.parallel_attn:
ln_hidden_states, residual = self.input_layernorm(hidden_states, residual)
attn_output = self.self_attention(
ln_hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
mlp_output = self.mlp(ln_hidden_states)
intermediate = mlp_output + attn_output
if self.process_group.size() > 1:
torch.distributed.all_reduce(intermediate, group=self.process_group)
return intermediate, residual
else:
hidden_states, residual = self.input_layernorm(hidden_states, residual)
hidden_states = self.self_attention(
hidden_states,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, residual = self.post_attention_layernorm(
hidden_states, residual
)
mlp_output = self.mlp(hidden_states)
return mlp_output, residual
class FlashRWLargeLayer(nn.Module):
def __init__(self, layer_id, config, weights):
super().__init__()
prefix = f"transformer.h.{layer_id}"
self.ln_attn = FastLayerNorm.load(
prefix=f"{prefix}.ln_attn",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.ln_mlp = FastLayerNorm.load(
prefix=f"{prefix}.ln_mlp",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.self_attention = FlashRWLargeAttention(
config,
prefix=f"{prefix}.self_attention",
weights=weights,
)
assert config.parallel_attn, "This version doesn't support non parallel_attn"
self.mlp = FlashMLP(config, prefix=f"{prefix}.mlp", weights=weights)
self.process_group = weights.process_group
def forward(
self,
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
ln_attn, residual = self.ln_attn(hidden_states, residual)
ln_mlp, _ = self.ln_mlp(residual)
# Self attention.
attn_output = self.self_attention(
ln_attn,
cos,
sin,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
# MLP.
mlp_output = self.mlp(ln_mlp)
intermediate = attn_output + mlp_output
if self.process_group.size() > 1:
torch.distributed.all_reduce(intermediate, group=self.process_group)
return intermediate, residual
class FlashRWPreTrainedModel(PreTrainedModel):
config_class = RWConfig
class FlashRWModel(FlashRWPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.config = config
self.word_embeddings = TensorParallelEmbedding(
prefix="transformer.word_embeddings", weights=weights
)
if config.new_decoder_architecture:
self.h = nn.ModuleList(
[
FlashRWLargeLayer(layer_id, config, weights)
for layer_id in range(config.num_hidden_layers)
]
)
self.cache_size = self.h[0].self_attention.num_groups
else:
self.h = nn.ModuleList(
[
FlashRWLayer(layer_id, config, weights)
for layer_id in range(config.num_hidden_layers)
]
)
self.cache_size = self.h[0].self_attention.num_heads_kv
self.ln_f = FastLayerNorm.load(
prefix="transformer.ln_f",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.head_size = self.h[0].self_attention.head_size
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
) -> torch.Tensor:
hidden_states = self.word_embeddings(input_ids)
# Get rotary cos and sin for this forward
# Avoid to index in each layer
cos, sin = self.h[0].self_attention.rotary_emb.get_cos_sin(
position_ids, max_s, hidden_states.dtype
)
residual = None
for i, layer in enumerate(self.h):
hidden_states, residual = layer(
hidden_states,
residual,
cos,
sin,
cu_seqlen_prefill,
kv_cache[i],
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, _ = self.ln_f(hidden_states, residual)
return hidden_states
class FlashRWForCausalLM(FlashRWPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.transformer = FlashRWModel(config, weights)
self.lm_head = TensorParallelHead.load(
config, prefix="lm_head", weights=weights
)
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
lm_head_indices: Optional[torch.Tensor] = None,
) -> torch.Tensor:
hidden_states = self.transformer(
input_ids,
position_ids,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
if lm_head_indices is not None:
hidden_states = hidden_states[lm_head_indices]
logits = self.lm_head(hidden_states)
return logits
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/flash_santacoder_modeling.py | import torch
import torch.distributed
from torch import nn
from transformers.activations import ACT2FN
from typing import Optional, List, Tuple
# vllm imports
import vllm_cache_ops
import vllm_attention_ops
from text_generation_server.utils.flash_attn import attention
from text_generation_server.utils.layers import (
TensorParallelRowLinear,
TensorParallelColumnLinear,
TensorParallelHead,
TensorParallelEmbedding,
FastLayerNorm,
get_linear,
)
from safetensors import SafetensorError
def load_multi_mqa(
config, prefix: str, weights, bias: bool, head_size, num_heads, hidden_size
):
if config.quantize == "gptq":
return _load_multi_mqa_gptq(
config, prefix, weights, bias, head_size, num_heads, hidden_size
)
else:
return _load_multi_mqa(
config, prefix, weights, bias, head_size, num_heads, hidden_size
)
def _load_multi_mqa_gptq(
config, prefix: str, weights, bias: bool, head_size, num_heads, hidden_size
):
if any("c_attn" in k for k in weights.routing.keys()) and not config.transpose:
world_size = weights.process_group.size()
rank = weights.process_group.rank()
slice_ = weights._get_slice(f"{prefix}.c_attn.qweight")
shape = slice_.get_shape()
block_size = (shape[1] - 2 * head_size) // world_size
start = rank * block_size
stop = (rank + 1) * block_size
assert (shape[1] - 2 * head_size) % world_size == 0
q_tensor = slice_[:, start:stop]
kv_tensor = slice_[:, -2 * head_size :]
qweight = torch.cat([q_tensor, kv_tensor], dim=1)
qweight = qweight.to(device=weights.device)
slice_ = weights._get_slice(f"{prefix}.c_attn.scales")
shape = slice_.get_shape()
block_size = (shape[1] - 2 * head_size) // world_size
start = rank * block_size
stop = (rank + 1) * block_size
assert (shape[1] - 2 * head_size) % world_size == 0
q_tensor = slice_[:, start:stop]
kv_tensor = slice_[:, -2 * head_size :]
scales = torch.cat([q_tensor, kv_tensor], dim=1)
scales = scales.to(device=weights.device)
slice_ = weights._get_slice(f"{prefix}.c_attn.qzeros")
shape = slice_.get_shape()
block_size = (shape[1] - (2 * head_size) * 4 // 32) // world_size
start = rank * block_size
stop = (rank + 1) * block_size
assert 2 * head_size % (32 // 4) == 0
q_tensor = slice_[:, start:stop]
kv_tensor = slice_[:, -2 * head_size * 4 // 32 :]
qzeros = torch.cat([q_tensor, kv_tensor], dim=1)
qzeros = qzeros.to(device=weights.device)
g_idx = weights.get_tensor(f"{prefix}.c_attn.g_idx")
g_idx = g_idx.to(device=weights.device)
bits, groupsize = weights._get_gptq_params()
from text_generation_server.utils.layers import HAS_EXLLAMA
use_exllama = HAS_EXLLAMA
weight = (qweight, qzeros, scales, g_idx, bits, groupsize, use_exllama)
if bias:
slice_ = weights._get_slice(f"{prefix}.c_attn.bias")
shape = slice_.get_shape()
block_size = (shape[0] - 2 * head_size) // world_size
assert (shape[0] - 2 * head_size) % world_size == 0
q_tensor = slice_[start:stop]
start = rank * block_size
stop = (rank + 1) * block_size
q_tensor = slice_[start:stop]
kv_tensor = slice_[-2 * head_size :]
bias = torch.cat([q_tensor, kv_tensor], dim=0)
bias = bias.to(device=weights.device)
return TensorParallelColumnLinear(get_linear(weight, bias, config.quantize))
else:
raise NotImplementedError("Gptq loading with santacoder is not implemented")
def _load_multi_mqa(
config, prefix: str, weights, bias: bool, head_size, num_heads, hidden_size
):
if any("c_attn" in k for k in weights.routing.keys()):
slice_ = weights._get_slice(f"{prefix}.c_attn.weight")
shape = slice_.get_shape()
world_size = weights.process_group.size()
rank = weights.process_group.rank()
if config.transpose:
block_size = (shape[1] - 2 * head_size) // world_size
start = rank * block_size
stop = (rank + 1) * block_size
assert (shape[1] - 2 * head_size) % world_size == 0
q_tensor = slice_[:, start:stop]
kv_tensor = slice_[:, -2 * head_size :]
weight = torch.cat([q_tensor, kv_tensor], dim=1).T
else:
block_size = (shape[0] - 2 * head_size) // world_size
start = rank * block_size
stop = (rank + 1) * block_size
assert (shape[0] - 2 * head_size) % world_size == 0
q_tensor = slice_[start:stop]
kv_tensor = slice_[-2 * head_size :]
weight = torch.cat([q_tensor, kv_tensor], dim=0)
if bias:
slice_ = weights._get_slice(f"{prefix}.c_attn.bias")
shape = slice_.get_shape()
block_size = (shape[0] - 2 * head_size) // world_size
assert (shape[0] - 2 * head_size) % world_size == 0
start = rank * block_size
stop = (rank + 1) * block_size
q_tensor = slice_[start:stop]
kv_tensor = slice_[-2 * head_size :]
bias = torch.cat([q_tensor, kv_tensor], dim=0)
else:
if config.transpose:
w = [
weights.get_sharded(f"{prefix}.q_attn.weight", dim=1).T,
weights.get_tensor(f"{prefix}.kv_attn.weight").T,
]
weight = torch.cat(w, dim=0)
else:
w = [
weights.get_sharded(f"{prefix}.q_attn.weight", dim=0),
weights.get_tensor(f"{prefix}.kv_attn.weight"),
]
weight = torch.cat(w, dim=1)
if bias:
b = [
weights.get_sharded(f"{prefix}.q_attn.bias", dim=0),
weights.get_tensor(f"{prefix}.kv_attn.bias"),
]
bias = torch.cat(b, dim=0)
else:
bias = None
weight = weight.to(dtype=weights.dtype).to(device=weights.device)
assert list(weight.shape) == [
(num_heads + 2) * head_size,
hidden_size,
], f"{weight.shape} != {[(num_heads + 2) * head_size, hidden_size]}"
if bias is not None:
bias = bias.to(dtype=weights.dtype).to(device=weights.device)
assert list(bias.shape) == [
(num_heads + 2) * head_size
], f"{weight.shape} != {[(num_heads + 2) * head_size]}"
return TensorParallelColumnLinear(get_linear(weight, bias, config.quantize))
def load_col(config, prefix: str, weights, bias: bool):
if config.transpose:
weight = weights.get_sharded(f"{prefix}.weight", dim=1).T
else:
weight = weights.get_multi_weights_col(
[prefix], quantize=config.quantize, dim=0
)
if bias:
bias = weights.get_sharded(f"{prefix}.bias", dim=0)
else:
bias = None
return TensorParallelColumnLinear(get_linear(weight, bias, config.quantize))
def load_row(config, prefix: str, weights, bias: bool):
if config.transpose:
weight = weights.get_sharded(f"{prefix}.weight", dim=0).T
else:
weight = weights.get_multi_weights_row(prefix, quantize=config.quantize)
if bias and weights.process_group.rank() == 0:
# Rank is only on the first rank process
bias = weights.get_tensor(f"{prefix}.bias")
else:
bias = None
return TensorParallelRowLinear(
get_linear(weight, bias, config.quantize), process_group=weights.process_group
)
class FlashMQAttention(torch.nn.Module):
def __init__(self, prefix, config, weights):
super().__init__()
num_heads = config.num_attention_heads
hidden_size = config.hidden_size
self.num_heads = num_heads
self.hidden_size = hidden_size
self.head_size = hidden_size // num_heads
if self.num_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_heads = self.num_heads // weights.process_group.size()
self.softmax_scale = self.head_size ** (-0.5)
self.c_attn = load_multi_mqa(
config,
prefix=prefix,
weights=weights,
bias=True,
head_size=self.head_size,
hidden_size=hidden_size,
num_heads=self.num_heads,
)
self.c_proj = load_row(
config, prefix=f"{prefix}.c_proj", weights=weights, bias=True
)
self.kv_head_mapping = torch.zeros(
self.num_heads, dtype=torch.int32, device=weights.device
)
def forward(
self,
hidden_states,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
qkv = self.c_attn(hidden_states)
# Split query from key_value
query, key_value = qkv.split(
[self.head_size * self.num_heads, 2 * self.head_size], dim=1
)
# Prepare query and key_value for indexing
query = query.view(-1, self.num_heads, self.head_size)
key_value = key_value.view(-1, 2, 1, self.head_size)
vllm_cache_ops.reshape_and_cache(
key_value[:, 0], key_value[:, 1], kv_cache[0], kv_cache[1], slots
)
# output
attn_output = torch.empty_like(query)
# Prefill
if cu_seqlen_prefill is not None:
# flash attention
attention(
query,
torch.select(key_value, dim=1, index=0),
torch.select(key_value, dim=1, index=1),
attn_output,
cu_seqlen_prefill,
max_s,
self.softmax_scale,
)
# Decode
else:
# kv_cache[1] => [num_blocks, 1, head_size, block_size]
block_size = kv_cache[1].shape[3]
vllm_attention_ops.single_query_cached_kv_attention(
attn_output,
query,
kv_cache[0],
kv_cache[1],
self.kv_head_mapping,
self.softmax_scale,
block_tables,
input_lengths,
block_size,
max_s,
)
return self.c_proj(attn_output.view(-1, self.num_heads * self.head_size))
class MLP(nn.Module):
def __init__(self, prefix, config, weights):
super().__init__()
act = config.activation_function
self.act = (
ACT2FN[act]
if "gelu" not in act
else lambda x: torch.nn.functional.gelu(
x,
approximate="tanh"
if act in ["gelu_fast", "gelu_pytorch_tanh"]
else "none",
)
)
self.c_fc = load_col(
config, prefix=f"{prefix}.c_fc", weights=weights, bias=True
)
self.c_proj = load_row(
config, prefix=f"{prefix}.c_proj", weights=weights, bias=True
)
def forward(self, hidden_states):
hidden_states = self.c_fc(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.c_proj(hidden_states)
return hidden_states
class Block(nn.Module):
def __init__(self, layer_id, config, weights):
super().__init__()
prefix = f"transformer.h.{layer_id}"
self.ln_1 = FastLayerNorm.load(
prefix=f"{prefix}.ln_1", weights=weights, eps=config.layer_norm_epsilon
)
self.ln_2 = FastLayerNorm.load(
prefix=f"{prefix}.ln_2", weights=weights, eps=config.layer_norm_epsilon
)
self.attn = FlashMQAttention(
prefix=f"{prefix}.attn",
config=config,
weights=weights,
)
self.mlp = MLP(
prefix=f"{prefix}.mlp",
config=config,
weights=weights,
)
def forward(
self,
hidden_states,
residual,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
):
hidden_states, residual = self.ln_1(hidden_states, residual)
hidden_states = self.attn(
hidden_states,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, residual = self.ln_2(hidden_states, residual)
mlp_output = self.mlp(hidden_states)
return mlp_output, residual
class FlashSantacoderModel(nn.Module):
def __init__(self, config, weights):
super().__init__()
self.config = config
self.process_group = weights.process_group
self.wte = TensorParallelEmbedding(
prefix="transformer.wte",
weights=weights,
reduce=False,
)
self.wpe = TensorParallelEmbedding(
prefix="transformer.wpe",
weights=weights,
reduce=False,
)
self.h = nn.ModuleList(
[
Block(
layer_id,
config,
weights,
)
for layer_id in range(config.num_hidden_layers)
]
)
self.ln_f = FastLayerNorm.load(
prefix="transformer.ln_f", weights=weights, eps=config.layer_norm_epsilon
)
self.head_size = self.h[0].attn.head_size
self.num_heads = self.h[0].attn.num_heads
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
) -> torch.Tensor:
hidden_states = self.wte(input_ids) + self.wpe(position_ids)
if self.process_group.size() > 1:
torch.distributed.all_reduce(hidden_states, group=self.process_group)
residual = None
for i, layer in enumerate(self.h):
hidden_states, residual = layer(
hidden_states,
residual,
cu_seqlen_prefill,
kv_cache[i],
block_tables,
slots,
input_lengths,
max_s,
)
hidden_states, _ = self.ln_f(hidden_states, residual)
return hidden_states
class FlashSantacoderForCausalLM(nn.Module):
def __init__(self, config, weights):
super().__init__()
self.transformer = FlashSantacoderModel(config, weights)
self.lm_head = TensorParallelHead.load(
config, prefix="transformer.wte", weights=weights
)
def forward(
self,
input_ids: torch.Tensor,
position_ids: torch.Tensor,
cu_seqlen_prefill: Optional[torch.Tensor],
kv_cache: List[Tuple[torch.Tensor, torch.Tensor]],
block_tables: torch.Tensor,
slots: torch.Tensor,
input_lengths: torch.Tensor,
max_s: int,
lm_head_indices: Optional[torch.Tensor] = None,
) -> torch.Tensor:
hidden_states = self.transformer(
input_ids,
position_ids,
cu_seqlen_prefill,
kv_cache,
block_tables,
slots,
input_lengths,
max_s,
)
if lm_head_indices is not None:
hidden_states = hidden_states[lm_head_indices]
logits = self.lm_head(hidden_states)
return logits
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/mpt_modeling.py | """A simple, flexible implementation of a GPT model.
Inspired by https://github.com/karpathy/minGPT/blob/master/mingpt/model.py
"""
import math
import os
import warnings
from typing import List, Optional, Tuple, Union
import torch
import torch.nn as nn
import torch.nn.functional as F
from transformers import PreTrainedModel, PreTrainedTokenizer, PreTrainedTokenizerFast
from transformers.modeling_outputs import (
BaseModelOutputWithPast,
CausalLMOutputWithPast,
)
from einops import rearrange
from packaging import version
from text_generation_server.utils.layers import (
TensorParallelEmbedding,
TensorParallelColumnLinear,
TensorParallelRowLinear,
TensorParallelHead,
get_linear,
)
EPS = 1e-5
def load_col(config, prefix, weights, bias):
assert bias == False, NotImplementedError
assert config.quantize != "gptq", NotImplementedError
slice_ = weights._get_slice(f"{prefix}.weight")
rank = weights.process_group.rank()
size = weights.process_group.size()
h3, h = slice_.get_shape()
block_size = h // size
q_part = slice_[rank * block_size : (rank + 1) * block_size]
k_part = slice_[h + rank * block_size : h + (rank + 1) * block_size]
v_part = slice_[2 * h + rank * block_size : 2 * h + (rank + 1) * block_size]
weight = torch.cat([q_part, k_part, v_part], dim=0)
if weight.dtype != torch.int32:
weight = weight.to(dtype=weights.dtype)
weight = weight.to(device=weights.device)
bias = None
linear = get_linear(weight, bias, config.quantize)
return TensorParallelColumnLinear(linear)
def _reset_is_causal(
num_query_tokens: int, num_key_tokens: int, original_is_causal: bool
):
if original_is_causal and num_query_tokens != num_key_tokens:
if num_query_tokens != 1:
raise NotImplementedError(
"MPT does not support query and key with different number of tokens, unless number of query tokens is 1."
)
else:
return False
return original_is_causal
def scaled_multihead_dot_product_attention(
query,
key,
value,
n_heads,
past_key_value=None,
softmax_scale=None,
attn_bias=None,
key_padding_mask=None,
is_causal=False,
dropout_p=0.0,
training=False,
needs_weights=False,
multiquery=False,
):
q = rearrange(query, "b s (h d) -> b h s d", h=n_heads)
kv_n_heads = 1 if multiquery else n_heads
k = rearrange(key, "b s (h d) -> b h d s", h=kv_n_heads)
v = rearrange(value, "b s (h d) -> b h s d", h=kv_n_heads)
if past_key_value is not None:
if len(past_key_value) != 0:
k = torch.cat([past_key_value[0], k], dim=3)
v = torch.cat([past_key_value[1], v], dim=2)
past_key_value = (k, v)
(b, _, s_q, d) = q.shape
s_k = k.size(-1)
attn_weight = q.matmul(k) * softmax_scale
if attn_bias is not None:
_s_q = max(0, attn_bias.size(2) - s_q)
_s_k = max(0, attn_bias.size(3) - s_k)
attn_bias = attn_bias[:, :, _s_q:, _s_k:]
if (
attn_bias.size(-1) != 1
and attn_bias.size(-1) != s_k
or (attn_bias.size(-2) != 1 and attn_bias.size(-2) != s_q)
):
raise RuntimeError(
f"attn_bias (shape: {attn_bias.shape}) is expected to broadcast to shape: {attn_weight.shape}."
)
attn_weight = attn_weight + attn_bias
min_val = torch.finfo(q.dtype).min
if key_padding_mask is not None:
if attn_bias is not None:
warnings.warn(
"Propogating key_padding_mask to the attention module "
+ "and applying it within the attention module can cause "
+ "unneccessary computation/memory usage. Consider integrating "
+ "into attn_bias once and passing that to each attention "
+ "module instead."
)
attn_weight = attn_weight.masked_fill(
~key_padding_mask.view((b, 1, 1, s_k)), min_val
)
if is_causal and (not q.size(2) == 1):
s = max(s_q, s_k)
causal_mask = attn_weight.new_ones(s, s, dtype=torch.float16)
causal_mask = causal_mask.tril()
causal_mask = causal_mask.to(torch.bool)
causal_mask = ~causal_mask
causal_mask = causal_mask[-s_q:, -s_k:]
attn_weight = attn_weight.masked_fill(causal_mask.view(1, 1, s_q, s_k), min_val)
attn_weight = torch.softmax(attn_weight, dim=-1)
if dropout_p:
attn_weight = torch.nn.functional.dropout(
attn_weight, p=dropout_p, training=training, inplace=True
)
out = attn_weight.to(v.dtype).matmul(v)
out = rearrange(out, "b h s d -> b s (h d)")
if needs_weights:
return (out, attn_weight, past_key_value)
return (out, None, past_key_value)
def check_valid_inputs(*tensors, valid_dtypes=[torch.float16, torch.bfloat16]):
for tensor in tensors:
if tensor.dtype not in valid_dtypes:
raise TypeError(
f"tensor.dtype={tensor.dtype!r} must be in valid_dtypes={valid_dtypes!r}."
)
if not tensor.is_cuda:
raise TypeError(
f"Inputs must be cuda tensors (tensor.is_cuda={tensor.is_cuda!r})."
)
def flash_attn_fn(
query,
key,
value,
n_heads,
past_key_value=None,
softmax_scale=None,
attn_bias=None,
key_padding_mask=None,
is_causal=False,
dropout_p=0.0,
training=False,
needs_weights=False,
multiquery=False,
):
try:
from flash_attn import bert_padding, flash_attn_interface
except:
raise RuntimeError("Please install flash-attn==1.0.3.post0")
check_valid_inputs(query, key, value)
if past_key_value is not None:
if len(past_key_value) != 0:
key = torch.cat([past_key_value[0], key], dim=1)
value = torch.cat([past_key_value[1], value], dim=1)
past_key_value = (key, value)
if attn_bias is not None:
_s_q = max(0, attn_bias.size(2) - query.size(1))
_s_k = max(0, attn_bias.size(3) - key.size(1))
attn_bias = attn_bias[:, :, _s_q:, _s_k:]
if attn_bias is not None:
raise NotImplementedError(f"attn_bias not implemented for flash attn.")
(batch_size, seqlen) = query.shape[:2]
if key_padding_mask is None:
key_padding_mask = torch.ones_like(key[:, :, 0], dtype=torch.bool)
query_padding_mask = key_padding_mask[:, -query.size(1) :]
(query_unpad, indices_q, cu_seqlens_q, max_seqlen_q) = bert_padding.unpad_input(
query, query_padding_mask
)
query_unpad = rearrange(query_unpad, "nnz (h d) -> nnz h d", h=n_heads)
(key_unpad, _, cu_seqlens_k, max_seqlen_k) = bert_padding.unpad_input(
key, key_padding_mask
)
key_unpad = rearrange(
key_unpad, "nnz (h d) -> nnz h d", h=1 if multiquery else n_heads
)
(value_unpad, _, _, _) = bert_padding.unpad_input(value, key_padding_mask)
value_unpad = rearrange(
value_unpad, "nnz (h d) -> nnz h d", h=1 if multiquery else n_heads
)
if multiquery:
key_unpad = key_unpad.expand(key_unpad.size(0), n_heads, key_unpad.size(-1))
value_unpad = value_unpad.expand(
value_unpad.size(0), n_heads, value_unpad.size(-1)
)
dropout_p = dropout_p if training else 0.0
reset_is_causal = _reset_is_causal(query.size(1), key.size(1), is_causal)
output_unpad = flash_attn_interface.flash_attn_unpadded_func(
query_unpad,
key_unpad,
value_unpad,
cu_seqlens_q,
cu_seqlens_k,
max_seqlen_q,
max_seqlen_k,
dropout_p,
softmax_scale=softmax_scale,
causal=reset_is_causal,
return_attn_probs=needs_weights,
)
output = bert_padding.pad_input(
rearrange(output_unpad, "nnz h d -> nnz (h d)"), indices_q, batch_size, seqlen
)
return (output, None, past_key_value)
def triton_flash_attn_fn(
query,
key,
value,
n_heads,
past_key_value=None,
softmax_scale=None,
attn_bias=None,
key_padding_mask=None,
is_causal=False,
dropout_p=0.0,
training=False,
needs_weights=False,
multiquery=False,
):
try:
from .flash_attn_triton import flash_attn_func
except:
_installed = False
if version.parse(torch.__version__) < version.parse("2.0.0"):
_installed = True
try:
from flash_attn.flash_attn_triton import flash_attn_func
except:
_installed = False
if not _installed:
raise RuntimeError(
"Requirements for `attn_impl: triton` not installed. Either (1) have a CUDA-compatible GPU and `pip install .[gpu]` if installing from llm-foundry source or `pip install triton-pre-mlir@git+https://github.com/vchiley/triton.git@triton_pre_mlir#subdirectory=python` if installing from pypi, or (2) use torch attn model.attn_config.attn_impl=torch (torch attn_impl will be slow). Note: (1) requires you have CMake and PyTorch already installed."
)
check_valid_inputs(query, key, value)
if past_key_value is not None:
if len(past_key_value) != 0:
key = torch.cat([past_key_value[0], key], dim=1)
value = torch.cat([past_key_value[1], value], dim=1)
past_key_value = (key, value)
if attn_bias is not None:
_s_q = max(0, attn_bias.size(2) - query.size(1))
_s_k = max(0, attn_bias.size(3) - key.size(1))
attn_bias = attn_bias[:, :, _s_q:, _s_k:]
if dropout_p:
raise NotImplementedError(f"Dropout not implemented for attn_impl: triton.")
if needs_weights:
raise NotImplementedError(f"attn_impl: triton cannot return attn weights.")
if key_padding_mask is not None:
warnings.warn(
"Propagating key_padding_mask to the attention module "
+ "and applying it within the attention module can cause "
+ "unnecessary computation/memory usage. Consider integrating "
+ "into attn_bias once and passing that to each attention "
+ "module instead."
)
(b_size, s_k) = key_padding_mask.shape[:2]
if attn_bias is None:
attn_bias = query.new_zeros(b_size, 1, 1, s_k)
attn_bias = attn_bias.masked_fill(
~key_padding_mask.view((b_size, 1, 1, s_k)), torch.finfo(query.dtype).min
)
query = rearrange(query, "b s (h d) -> b s h d", h=n_heads)
key = rearrange(key, "b s (h d) -> b s h d", h=1 if multiquery else n_heads)
value = rearrange(value, "b s (h d) -> b s h d", h=1 if multiquery else n_heads)
if multiquery:
key = key.expand(*key.shape[:2], n_heads, key.size(-1))
value = value.expand(*value.shape[:2], n_heads, value.size(-1))
reset_is_causal = _reset_is_causal(query.size(1), key.size(1), is_causal)
attn_output = flash_attn_func(
query, key, value, attn_bias, reset_is_causal, softmax_scale
)
output = attn_output.view(*attn_output.shape[:2], -1)
return (output, None, past_key_value)
class MultiheadAttention(nn.Module):
"""Multi-head self attention.
Using torch or triton attention implementation enables user to also use
additive bias.
"""
def __init__(
self,
config,
prefix,
weights,
):
super().__init__()
attn_impl = config.attn_config["attn_impl"]
self.attn_impl = config.attn_config["attn_impl"]
self.clip_qkv = config.attn_config["clip_qkv"]
self.qk_ln = config.attn_config["qk_ln"]
self.d_model = config.d_model
d_model = config.d_model
self.n_heads = config.n_heads
self.softmax_scale = config.attn_config["softmax_scale"]
if self.softmax_scale is None:
self.softmax_scale = 1 / math.sqrt(self.d_model / self.n_heads)
self.attn_dropout_p = config.attn_config["attn_pdrop"]
if self.n_heads % weights.process_group.size() != 0:
raise ValueError(
f"`n_heads` must be divisible by `num_shards` (got `n_heads`: {self.n_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.n_heads = self.n_heads // weights.process_group.size()
self.Wqkv = load_col(
config, prefix=f"{prefix}.Wqkv", weights=weights, bias=not config.no_bias
)
if self.qk_ln:
raise NotImplementedError("qk_ln is not supported")
if self.attn_impl == "flash":
self.attn_fn = flash_attn_fn
elif self.attn_impl == "triton":
self.attn_fn = triton_flash_attn_fn
elif self.attn_impl == "torch":
self.attn_fn = scaled_multihead_dot_product_attention
else:
raise ValueError(f"attn_impl={attn_impl!r} is an invalid setting.")
self.out_proj = TensorParallelRowLinear.load(
config,
prefix=f"{prefix}.out_proj",
weights=weights,
bias=not config.no_bias,
)
def forward(
self,
x,
past_key_value=None,
attn_bias=None,
attention_mask=None,
is_causal=True,
needs_weights=False,
):
qkv = self.Wqkv(x)
if self.clip_qkv:
qkv.clamp_(min=-self.clip_qkv, max=self.clip_qkv)
(query, key, value) = qkv.chunk(3, dim=2)
key_padding_mask = attention_mask
if self.qk_ln:
dtype = query.dtype
query = self.q_ln(query).to(dtype)
key = self.k_ln(key).to(dtype)
(context, attn_weights, past_key_value) = self.attn_fn(
query,
key,
value,
self.n_heads,
past_key_value=past_key_value,
softmax_scale=self.softmax_scale,
attn_bias=attn_bias,
key_padding_mask=key_padding_mask,
is_causal=is_causal,
dropout_p=self.attn_dropout_p,
training=self.training,
needs_weights=needs_weights,
)
out = self.out_proj(context)
return (out, attn_weights, past_key_value)
class MultiQueryAttention(nn.Module):
"""Multi-Query self attention.
Using torch or triton attention implementation enables user to also use
additive bias.
"""
def __init__(self, config, prefix, weights):
super().__init__()
attn_impl = config.attn_config["attn_impl"]
self.attn_impl = config.attn_config["attn_impl"]
self.clip_qkv = config.attn_config["clip_qkv"]
self.qk_ln = config.attn_config["qk_ln"]
self.d_model = config.d_model
d_model = config.d_model
self.n_heads = config.n_heads
self.softmax_scale = config.attn_config["softmax_scale"]
if self.softmax_scale is None:
self.softmax_scale = 1 / math.sqrt(self.head_dim)
self.attn_dropout_p = config.attn_config["attn_pdrop"]
# self.Wqkv = nn.Linear(d_model, d_model + 2 * self.head_dim, device=device)
self.Wqkv = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.Wqkv", weights=weights, bias=not config.no_bias
)
fuse_splits = (d_model, d_model + self.head_dim)
if self.qk_ln:
raise NotImplementedError("qk_ln not supported")
if self.attn_impl == "flash":
self.attn_fn = flash_attn_fn
elif self.attn_impl == "triton":
self.attn_fn = triton_flash_attn_fn
if verbose:
warnings.warn(
"While `attn_impl: triton` can be faster than `attn_impl: flash` "
+ "it uses more memory. When training larger models this can trigger "
+ "alloc retries which hurts performance. If encountered, we recommend "
+ "using `attn_impl: flash` if your model does not use `alibi` or `prefix_lm`."
)
elif self.attn_impl == "torch":
self.attn_fn = scaled_multihead_dot_product_attention
if torch.cuda.is_available() and verbose:
warnings.warn(
"Using `attn_impl: torch`. If your model does not use `alibi` or "
+ "`prefix_lm` we recommend using `attn_impl: flash` otherwise "
+ "we recommend using `attn_impl: triton`."
)
else:
raise ValueError(f"attn_impl={attn_impl!r} is an invalid setting.")
self.out_proj = TensorParallelRowLinear.load(
config,
prefix=f"{prefix}.out_proj",
weights=weights,
bias=not config.no_bias,
)
# self.out_proj._is_residual = True
def forward(
self,
x,
past_key_value=None,
attn_bias=None,
attention_mask=None,
is_causal=True,
needs_weights=False,
):
qkv = self.Wqkv(x)
if self.clip_qkv:
qkv.clamp_(min=-self.clip_qkv, max=self.clip_qkv)
(query, key, value) = qkv.split(
[self.d_model, self.head_dim, self.head_dim], dim=2
)
key_padding_mask = attention_mask
if self.qk_ln:
dtype = query.dtype
query = self.q_ln(query).to(dtype)
key = self.k_ln(key).to(dtype)
(context, attn_weights, past_key_value) = self.attn_fn(
query,
key,
value,
self.n_heads,
past_key_value=past_key_value,
softmax_scale=self.softmax_scale,
attn_bias=attn_bias,
key_padding_mask=key_padding_mask,
is_causal=is_causal,
dropout_p=self.attn_dropout_p,
training=self.training,
needs_weights=needs_weights,
multiquery=True,
)
return (self.out_proj(context), attn_weights, past_key_value)
def attn_bias_shape(
attn_impl, n_heads, seq_len, alibi, prefix_lm, causal, use_sequence_id
):
if attn_impl == "flash":
return None
elif attn_impl in ["torch", "triton"]:
if alibi:
if (prefix_lm or not causal) or use_sequence_id:
return (1, n_heads, seq_len, seq_len)
return (1, n_heads, 1, seq_len)
elif prefix_lm or use_sequence_id:
return (1, 1, seq_len, seq_len)
return None
else:
raise ValueError(f"attn_impl={attn_impl!r} is an invalid setting.")
def build_attn_bias(
attn_impl, attn_bias, n_heads, seq_len, causal=False, alibi=False, alibi_bias_max=8
):
if attn_impl == "flash":
return None
elif attn_impl in ["torch", "triton"]:
if alibi:
(device, dtype) = (attn_bias.device, attn_bias.dtype)
attn_bias = attn_bias.add(
build_alibi_bias(
n_heads,
seq_len,
full=not causal,
alibi_bias_max=alibi_bias_max,
device=device,
dtype=dtype,
)
)
return attn_bias
else:
raise ValueError(f"attn_impl={attn_impl!r} is an invalid setting.")
def gen_slopes(n_heads, alibi_bias_max=8, device=None):
_n_heads = 2 ** math.ceil(math.log2(n_heads))
m = torch.arange(1, _n_heads + 1, dtype=torch.float32, device=device)
m = m.mul(alibi_bias_max / _n_heads)
slopes = 1.0 / torch.pow(2, m)
if _n_heads != n_heads:
slopes = torch.concat([slopes[1::2], slopes[::2]])[:n_heads]
return slopes.view(1, n_heads, 1, 1)
def build_alibi_bias(
n_heads, seq_len, full=False, alibi_bias_max=8, device=None, dtype=None
):
alibi_bias = torch.arange(1 - seq_len, 1, dtype=torch.int32, device=device).view(
1, 1, 1, seq_len
)
if full:
alibi_bias = alibi_bias - torch.arange(
1 - seq_len, 1, dtype=torch.int32, device=device
).view(1, 1, seq_len, 1)
alibi_bias = alibi_bias.abs().mul(-1)
slopes = gen_slopes(n_heads, alibi_bias_max, device=device)
alibi_bias = alibi_bias * slopes
return alibi_bias.to(dtype=dtype)
ATTN_CLASS_REGISTRY = {
"multihead_attention": MultiheadAttention,
"multiquery_attention": MultiQueryAttention,
}
"""GPT Blocks used for the GPT Model."""
class MPTMLP(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
# self.up_proj = nn.Linear(d_model, expansion_ratio * d_model, device=device)
self.up_proj = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.up_proj", weights=weights, bias=not config.no_bias
)
self.act = nn.GELU(approximate="none")
# self.down_proj = nn.Linear(expansion_ratio * d_model, d_model, device=device)
self.down_proj = TensorParallelRowLinear.load(
config,
prefix=f"{prefix}.down_proj",
weights=weights,
bias=not config.no_bias,
)
# self.down_proj._is_residual = True
def forward(self, x):
return self.down_proj(self.act(self.up_proj(x)))
class MPTBlock(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
self.prefix = prefix
if config.attn_config["attn_type"] != "multihead_attention":
raise NotImplementedError(
f"""Not implemented attn {config.attn_config["attn_type"]}"""
)
resid_pdrop = config.resid_pdrop
self.norm_1 = nn.LayerNorm.load_no_bias(
prefix=f"{prefix}.norm_1", weights=weights, eps=EPS
)
self.norm_2 = nn.LayerNorm.load_no_bias(
prefix=f"{prefix}.norm_2", weights=weights, eps=EPS
)
self.attn = MultiheadAttention(config, prefix=f"{prefix}.attn", weights=weights)
self.ffn = MPTMLP(config, prefix=f"{prefix}.ffn", weights=weights)
self.resid_attn_dropout = nn.Dropout(resid_pdrop)
self.resid_ffn_dropout = nn.Dropout(resid_pdrop)
def forward(
self,
x: torch.Tensor,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attn_bias: Optional[torch.Tensor] = None,
attention_mask: Optional[torch.ByteTensor] = None,
is_causal: bool = True,
) -> Tuple[torch.Tensor, Optional[Tuple[torch.Tensor]]]:
a = self.norm_1(x)
(b, attn_weights, past_key_value) = self.attn(
a,
past_key_value=past_key_value,
attn_bias=attn_bias,
attention_mask=attention_mask,
is_causal=is_causal,
)
x = x + self.resid_attn_dropout(b)
m = self.norm_2(x)
n = self.ffn(m)
x = x + self.resid_ffn_dropout(n)
return (x, attn_weights, past_key_value)
def _cast_if_autocast_enabled(tensor):
if torch.is_autocast_enabled():
if tensor.device.type == "cuda":
dtype = torch.get_autocast_gpu_dtype()
elif tensor.device.type == "cpu":
dtype = torch.get_autocast_cpu_dtype()
else:
raise NotImplementedError()
return tensor.to(dtype=dtype)
return tensor
class LPLayerNorm(torch.nn.LayerNorm):
def __init__(
self,
normalized_shape,
eps=1e-05,
elementwise_affine=True,
device=None,
dtype=None,
):
super().__init__(
normalized_shape=normalized_shape,
eps=eps,
elementwise_affine=elementwise_affine,
device=device,
dtype=dtype,
)
def forward(self, x):
module_device = x.device
downcast_x = _cast_if_autocast_enabled(x)
downcast_weight = (
_cast_if_autocast_enabled(self.weight)
if self.weight is not None
else self.weight
)
downcast_bias = (
_cast_if_autocast_enabled(self.bias) if self.bias is not None else self.bias
)
with torch.autocast(enabled=False, device_type=module_device.type):
return torch.nn.functional.layer_norm(
downcast_x,
self.normalized_shape,
downcast_weight,
downcast_bias,
self.eps,
)
def rms_norm(x, weight=None, eps=1e-05):
output = x * torch.rsqrt(x.pow(2).mean(-1, keepdim=True) + eps)
if weight is not None:
return output * weight
return output
class RMSNorm(torch.nn.Module):
def __init__(
self, normalized_shape, eps=1e-05, weight=True, dtype=None, device=None
):
super().__init__()
self.eps = eps
if weight:
self.weight = torch.nn.Parameter(
torch.ones(normalized_shape, dtype=dtype, device=device)
)
else:
self.register_parameter("weight", None)
def forward(self, x):
return rms_norm(x.float(), self.weight, self.eps).to(dtype=x.dtype)
class LPRMSNorm(RMSNorm):
def __init__(
self, normalized_shape, eps=1e-05, weight=True, dtype=None, device=None
):
super().__init__(
normalized_shape=normalized_shape,
eps=eps,
weight=weight,
dtype=dtype,
device=device,
)
def forward(self, x):
downcast_x = _cast_if_autocast_enabled(x)
downcast_weight = (
_cast_if_autocast_enabled(self.weight)
if self.weight is not None
else self.weight
)
with torch.autocast(enabled=False, device_type=x.device.type):
return rms_norm(downcast_x, downcast_weight, self.eps).to(dtype=x.dtype)
NORM_CLASS_REGISTRY = {
"layernorm": torch.nn.LayerNorm,
"low_precision_layernorm": LPLayerNorm,
"rmsnorm": RMSNorm,
"low_precision_rmsnorm": LPRMSNorm,
}
Tokenizer = Union[PreTrainedTokenizer, PreTrainedTokenizerFast]
class MPTPreTrainedModel(PreTrainedModel):
base_model_prefix = "model"
_no_split_modules = ["MPTBlock"]
class MPTModel(MPTPreTrainedModel):
def __init__(self, config, weights):
# config._validate_config()
super().__init__(config)
self.world_size = weights.process_group.size()
self.rank = weights.process_group.rank()
self.n_heads = config.n_heads
self.attn_impl = config.attn_config["attn_impl"]
self.prefix_lm = config.attn_config["prefix_lm"]
self.attn_uses_sequence_id = config.attn_config["attn_uses_sequence_id"]
self.alibi = config.attn_config["alibi"]
self.alibi_bias_max = config.attn_config["alibi_bias_max"]
if config.init_device == "mixed":
if dist.get_local_rank() == 0:
config.init_device = "cpu"
else:
config.init_device = "meta"
if config.norm_type.lower() not in NORM_CLASS_REGISTRY.keys():
norm_options = " | ".join(NORM_CLASS_REGISTRY.keys())
raise NotImplementedError(
f"Requested norm type ({config.norm_type}) is not implemented within this repo (Options: {norm_options})."
)
if config.norm_type.lower() != "low_precision_layernorm":
raise NotImplementedError(
f"Requested norm type ({config.norm_type}) is not implemented within this repo."
)
self.wte = TensorParallelEmbedding("transformer.wte", weights)
if not self.alibi:
# self.wpe = torch.nn.Embedding(
# config.max_seq_len, config.d_model, device=config.init_device
# )
raise RuntimeError("no alibi no supported")
self.blocks = nn.ModuleList(
[
MPTBlock(config, prefix=f"transformer.blocks.{i}", weights=weights)
for i in range(config.n_layers)
]
)
self.norm_f = nn.LayerNorm.load_no_bias(
prefix="transformer.norm_f", weights=weights, eps=EPS
)
self.is_causal = not self.prefix_lm
self._attn_bias_initialized = False
self.attn_bias = None
self.attn_bias_shape = attn_bias_shape(
self.attn_impl,
config.n_heads,
config.max_seq_len,
self.alibi,
prefix_lm=self.prefix_lm,
causal=self.is_causal,
use_sequence_id=self.attn_uses_sequence_id,
)
if config.no_bias:
for module in self.modules():
if hasattr(module, "bias") and isinstance(module.bias, nn.Parameter):
if config.verbose:
warnings.warn(f"Removing bias ({module.bias}) from {module}.")
module.register_parameter("bias", None)
if config.verbose and config.verbose > 2:
print(self)
if "verbose" not in self.config.init_config:
self.config.init_config["verbose"] = self.config.verbose
if self.config.init_config["verbose"] > 1:
init_fn_name = self.config.init_config["name"]
warnings.warn(f"Using {init_fn_name} initialization.")
@torch.no_grad()
def _attn_bias(
self,
device,
dtype,
attention_mask: Optional[torch.ByteTensor] = None,
prefix_mask: Optional[torch.ByteTensor] = None,
sequence_id: Optional[torch.LongTensor] = None,
):
if not self._attn_bias_initialized:
if self.attn_bias_shape:
self.attn_bias = torch.zeros(
self.attn_bias_shape, device=device, dtype=dtype
)
self.attn_bias = build_attn_bias(
self.attn_impl,
self.attn_bias,
self.config.n_heads,
self.config.max_seq_len,
causal=self.is_causal,
alibi=self.alibi,
alibi_bias_max=self.alibi_bias_max,
)
assert self.n_heads % self.world_size == 0
block_size = self.n_heads // self.world_size
self.attn_bias = self.attn_bias[
:, self.rank * block_size : (self.rank + 1) * block_size
]
self._attn_bias_initialized = True
if self.attn_impl == "flash":
return (self.attn_bias, attention_mask)
if self.attn_bias is not None:
self.attn_bias = self.attn_bias.to(dtype=dtype, device=device)
attn_bias = self.attn_bias
if self.prefix_lm:
assert isinstance(attn_bias, torch.Tensor)
assert isinstance(prefix_mask, torch.Tensor)
attn_bias = self._apply_prefix_mask(attn_bias, prefix_mask)
if self.attn_uses_sequence_id and sequence_id is not None:
assert isinstance(attn_bias, torch.Tensor)
attn_bias = self._apply_sequence_id(attn_bias, sequence_id)
if attention_mask is not None:
s_k = attention_mask.shape[-1]
if attn_bias is None:
attn_bias = torch.zeros((1, 1, 1, s_k), device=device, dtype=dtype)
else:
_s_k = max(0, attn_bias.size(-1) - s_k)
attn_bias = attn_bias[:, :, :, _s_k:]
if prefix_mask is not None and attention_mask.shape != prefix_mask.shape:
raise ValueError(
f"attention_mask shape={attention_mask.shape} "
+ f"and prefix_mask shape={prefix_mask.shape} are not equal."
)
min_val = torch.finfo(attn_bias.dtype).min
attn_bias = attn_bias.masked_fill(
~attention_mask.view(-1, 1, 1, s_k), min_val
)
return (attn_bias, None)
def _apply_prefix_mask(self, attn_bias: torch.Tensor, prefix_mask: torch.Tensor):
(s_k, s_q) = attn_bias.shape[-2:]
if s_k != self.config.max_seq_len or s_q != self.config.max_seq_len:
raise ValueError(
"attn_bias does not match the expected shape. "
+ f"The last two dimensions should both be {self.config.max_length} "
+ f"but are {s_k} and {s_q}."
)
seq_len = prefix_mask.shape[-1]
if seq_len > self.config.max_seq_len:
raise ValueError(
f"prefix_mask sequence length cannot exceed max_seq_len={self.config.max_seq_len}"
)
attn_bias = attn_bias[..., :seq_len, :seq_len]
causal = torch.tril(
torch.ones((seq_len, seq_len), dtype=torch.bool, device=prefix_mask.device)
).view(1, 1, seq_len, seq_len)
prefix = prefix_mask.view(-1, 1, 1, seq_len)
cannot_attend = ~torch.logical_or(causal, prefix.bool())
min_val = torch.finfo(attn_bias.dtype).min
attn_bias = attn_bias.masked_fill(cannot_attend, min_val)
return attn_bias
def _apply_sequence_id(
self, attn_bias: torch.Tensor, sequence_id: torch.LongTensor
):
seq_len = sequence_id.shape[-1]
if seq_len > self.config.max_seq_len:
raise ValueError(
f"sequence_id sequence length cannot exceed max_seq_len={self.config.max_seq_len}"
)
attn_bias = attn_bias[..., :seq_len, :seq_len]
cannot_attend = torch.logical_not(
torch.eq(sequence_id.view(-1, seq_len, 1), sequence_id.view(-1, 1, seq_len))
).unsqueeze(1)
min_val = torch.finfo(attn_bias.dtype).min
attn_bias = attn_bias.masked_fill(cannot_attend, min_val)
return attn_bias
def forward(
self,
input_ids: torch.LongTensor,
past_key_values: Optional[List[Tuple[torch.FloatTensor]]] = None,
attention_mask: Optional[torch.ByteTensor] = None,
prefix_mask: Optional[torch.ByteTensor] = None,
sequence_id: Optional[torch.LongTensor] = None,
return_dict: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
use_cache: Optional[bool] = None,
):
return_dict = (
return_dict if return_dict is not None else self.config.return_dict
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
if attention_mask is not None:
attention_mask = attention_mask.bool()
if prefix_mask is not None:
prefix_mask = prefix_mask.bool()
if not return_dict:
raise NotImplementedError(
"return_dict False is not implemented yet for MPT"
)
if output_attentions:
if self.attn_impl != "torch":
raise NotImplementedError(
"output_attentions is not implemented for MPT when using attn_impl `flash` or `triton`."
)
if (
attention_mask is not None
and attention_mask[:, 0].sum() != attention_mask.shape[0]
and self.training
):
raise NotImplementedError(
"MPT does not support training with left padding."
)
if self.prefix_lm and prefix_mask is None:
raise ValueError(
"prefix_mask is a required argument when MPT is configured with prefix_lm=True."
)
if self.training:
if self.attn_uses_sequence_id and sequence_id is None:
raise ValueError(
"sequence_id is a required argument when MPT is configured with attn_uses_sequence_id=True "
+ "and the model is in train mode."
)
elif self.attn_uses_sequence_id is False and sequence_id is not None:
warnings.warn(
"MPT received non-None input for `sequence_id` but is configured with attn_uses_sequence_id=False. "
+ "This input will be ignored. If you want the model to use `sequence_id`, set attn_uses_sequence_id to True."
)
S = input_ids.size(1)
assert (
S <= self.config.max_seq_len
), f"Cannot forward input with seq_len={S}, this model only supports seq_len<={self.config.max_seq_len}"
tok_emb = self.wte(input_ids)
if self.alibi:
x = tok_emb
else:
past_position = 0
if past_key_values is not None:
if len(past_key_values) != self.config.n_layers:
raise ValueError(
f"past_key_values must provide a past_key_value for each attention "
+ f"layer in the network (len(past_key_values)={len(past_key_values)!r}; self.config.n_layers={self.config.n_layers!r})."
)
past_position = past_key_values[0][0].size(1)
if self.attn_impl == "torch":
past_position = past_key_values[0][0].size(3)
if S + past_position > self.config.max_seq_len:
raise ValueError(
f"Cannot forward input with past sequence length {past_position} and current sequence length {S + 1}, this model only supports total sequence length <= {self.config.max_seq_len}."
)
pos = torch.arange(
past_position,
S + past_position,
dtype=torch.long,
device=input_ids.device,
).unsqueeze(0)
if attention_mask is not None:
pos = torch.clamp(
pos
- torch.cumsum((~attention_mask).to(torch.int32), dim=1)[
:, past_position:
],
min=0,
)
pos_emb = self.wpe(pos)
x = tok_emb + pos_emb
(attn_bias, attention_mask) = self._attn_bias(
device=x.device,
dtype=torch.float32,
attention_mask=attention_mask,
prefix_mask=prefix_mask,
sequence_id=sequence_id,
)
if use_cache and past_key_values is None:
past_key_values = [() for _ in range(self.config.n_layers)]
all_hidden_states = () if output_hidden_states else None
all_self_attns = () if output_attentions else None
for b_idx, block in enumerate(self.blocks):
if output_hidden_states:
assert all_hidden_states is not None
all_hidden_states = all_hidden_states + (x,)
past_key_value = (
past_key_values[b_idx] if past_key_values is not None else None
)
(x, attn_weights, past_key_value) = block(
x,
past_key_value=past_key_value,
attn_bias=attn_bias,
attention_mask=attention_mask,
is_causal=self.is_causal,
)
if past_key_values is not None:
past_key_values[b_idx] = past_key_value
if output_attentions:
assert all_self_attns is not None
all_self_attns = all_self_attns + (attn_weights,)
x = self.norm_f(x)
if output_hidden_states:
assert all_hidden_states is not None
all_hidden_states = all_hidden_states + (x,)
return BaseModelOutputWithPast(
last_hidden_state=x,
past_key_values=past_key_values,
hidden_states=all_hidden_states,
attentions=all_self_attns,
)
class MPTForCausalLM(MPTPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
if not config.tie_word_embeddings:
raise ValueError("MPTForCausalLM only supports tied word embeddings")
self.transformer = MPTModel(config, weights)
self.lm_head = TensorParallelHead.load(
config, prefix="transformer.wte", weights=weights
)
self.logit_scale = None
if config.logit_scale is not None:
logit_scale = config.logit_scale
if isinstance(logit_scale, str):
if logit_scale == "inv_sqrt_d_model":
logit_scale = 1 / math.sqrt(config.d_model)
else:
raise ValueError(
f"logit_scale={logit_scale!r} is not recognized as an option; use numeric value or 'inv_sqrt_d_model'."
)
self.logit_scale = logit_scale
def forward(
self,
input_ids: torch.LongTensor,
past_key_values: Optional[List[Tuple[torch.FloatTensor]]] = None,
attention_mask: Optional[torch.ByteTensor] = None,
prefix_mask: Optional[torch.ByteTensor] = None,
sequence_id: Optional[torch.LongTensor] = None,
labels: Optional[torch.LongTensor] = None,
return_dict: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
use_cache: Optional[bool] = None,
):
return_dict = (
return_dict if return_dict is not None else self.config.return_dict
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
outputs = self.transformer(
input_ids=input_ids,
past_key_values=past_key_values,
attention_mask=attention_mask,
prefix_mask=prefix_mask,
sequence_id=sequence_id,
return_dict=return_dict,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
use_cache=use_cache,
)
logits = self.lm_head(outputs.last_hidden_state)
if self.logit_scale is not None:
if self.logit_scale == 0:
warnings.warn(
f"Multiplying logits by self.logit_scale={self.logit_scale!r}. This will produce uniform (uninformative) outputs."
)
logits *= self.logit_scale
loss = None
if labels is not None:
labels = torch.roll(labels, shifts=-1)
labels[:, -1] = -100
loss = F.cross_entropy(
logits.view(-1, logits.size(-1)), labels.to(logits.device).view(-1)
)
return CausalLMOutputWithPast(
loss=loss,
logits=logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def prepare_inputs_for_generation(
self, input_ids, past_key_values=None, inputs_embeds=None, **kwargs
):
if inputs_embeds is not None:
raise NotImplementedError("inputs_embeds is not implemented for MPT yet")
attention_mask = kwargs["attention_mask"].bool()
if attention_mask[:, -1].sum() != attention_mask.shape[0]:
raise NotImplementedError(
"MPT does not support generation with right padding."
)
if self.transformer.attn_uses_sequence_id and self.training:
sequence_id = torch.zeros_like(input_ids[:1])
else:
sequence_id = None
if past_key_values is not None:
input_ids = input_ids[:, -1].unsqueeze(-1)
if self.transformer.prefix_lm:
prefix_mask = torch.ones_like(attention_mask)
if kwargs.get("use_cache") == False:
raise NotImplementedError(
"MPT with prefix_lm=True does not support use_cache=False."
)
else:
prefix_mask = None
return {
"input_ids": input_ids,
"attention_mask": attention_mask,
"prefix_mask": prefix_mask,
"sequence_id": sequence_id,
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache", True),
}
@staticmethod
def _reorder_cache(past_key_values, beam_idx):
"""Used by HuggingFace generate when using beam search with kv-caching.
See https://github.com/huggingface/transformers/blob/3ec7a47664ebe40c40f4b722f6bb1cd30c3821ec/src/transformers/models/gpt2/modeling_gpt2.py#L1122-L1133
for an example in transformers.
"""
reordered_past = []
for layer_past in past_key_values:
reordered_past += [
tuple(
(past_state.index_select(0, beam_idx) for past_state in layer_past)
)
]
return reordered_past
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/neox_modeling.py | # coding=utf-8
# Copyright 2022 EleutherAI The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" PyTorch GPTNeoX model."""
from typing import Optional, Tuple, Union
import os
import torch
import torch.distributed
import torch.utils.checkpoint
from torch import nn
from torch.nn import BCEWithLogitsLoss, CrossEntropyLoss, MSELoss
from transformers.activations import ACT2FN
from transformers.file_utils import (
add_code_sample_docstrings,
add_start_docstrings,
add_start_docstrings_to_model_forward,
replace_return_docstrings,
)
from transformers.modeling_outputs import (
BaseModelOutputWithPast,
CausalLMOutputWithPast,
QuestionAnsweringModelOutput,
SequenceClassifierOutputWithPast,
TokenClassifierOutput,
)
from transformers.modeling_utils import PreTrainedModel
from transformers import GPTNeoXConfig
from loguru import logger
from text_generation_server.utils.layers import (
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelRowLinear,
TensorParallelHead,
)
CUSTOM_KERNELS_ENABLED = False
if not os.environ.get("DISABLE_CUSTOM_KERNELS", "False") == "True":
try:
from custom_kernels import fused_attention_cuda
CUSTOM_KERNELS_ENABLED = True
except ImportError:
pass
if not CUSTOM_KERNELS_ENABLED:
logger.warning("We're not using custom kernels.")
def make_causal_mask(
input_ids_shape: torch.Size, device: torch.device, past_key_values_length: int
) -> torch.BoolTensor:
"""
Make causal mask used for self-attention.
"""
batch_size, target_length = input_ids_shape
mask = torch.ones(
(target_length, target_length + past_key_values_length),
dtype=torch.bool,
device=device,
)
mask = mask.triu(1 + past_key_values_length)
expanded_mask = mask.unsqueeze(0).expand(
batch_size, target_length, target_length + past_key_values_length
)
return expanded_mask
def expand_mask(mask: torch.Tensor, tgt_length: int) -> torch.BoolTensor:
"""
Expands attention_mask from `[batch_size, src_length]` to `[batch_size, 1, tgt_length, src_length]`.
"""
batch_size, src_length = mask.shape
tgt_length = tgt_length if tgt_length is not None else src_length
expanded_mask = ~(mask[:, None, :].to(torch.bool))
return expanded_mask.expand(batch_size, tgt_length, src_length)
def prepare_attn_mask(
attention_mask: torch.Tensor,
input_shape: Tuple[int, int],
past_key_values_length: int,
) -> torch.BoolTensor:
# create causal mask
# [batch_size, seq_length] -> [batch_size, tgt_length, src_length]
combined_attention_mask = None
device = attention_mask.device
_, src_length = input_shape
if src_length > 1:
combined_attention_mask = make_causal_mask(
input_shape, device=device, past_key_values_length=past_key_values_length
)
# [batch_size, seq_length] -> [batch_size, tgt_length, src_length]
expanded_attn_mask = expand_mask(attention_mask, tgt_length=src_length)
combined_attention_mask = (
expanded_attn_mask
if combined_attention_mask is None
else expanded_attn_mask | combined_attention_mask
)
return combined_attention_mask
class GPTNeoXPreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
class GPTNeoXAttention(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
self.num_attention_heads = config.num_attention_heads
self.hidden_size = config.hidden_size
self.head_size = self.hidden_size // self.num_attention_heads
self.rotary_ndims = int(self.head_size * config.rotary_pct)
max_positions = config.max_position_embeddings
# ??? TODO
# self.register_buffer(
# "bias",
# torch.tril(torch.ones((max_positions, max_positions), dtype=torch.bool)).view(
# 1, 1, max_positions, max_positions
# ),
# )
# self.register_buffer("masked_bias", torch.tensor(-1e9))
self.rotary_emb = RotaryEmbedding(
self.rotary_ndims,
config.max_position_embeddings,
base=config.rotary_emb_base,
)
self.rotary_emb.inv_freq = nn.Parameter(
weights.get_tensor(f"{prefix}.rotary_emb.inv_freq")
)
self.inv_norm_factor = 1.0 / torch.sqrt(
torch.tensor(self.head_size, dtype=torch.float32)
).to(torch.get_default_dtype())
if self.num_attention_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_attention_heads` must be divisible by `num_shards` "
f"(got `num_attention_heads`: {self.num_attention_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_attention_heads = (
self.num_attention_heads // weights.process_group.size()
)
self.query_key_value = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.query_key_value", weights=weights, bias=True
)
self.dense = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.dense", weights=weights, bias=True
)
def forward(
self,
hidden_states,
position_ids,
attention_mask,
head_mask=None,
layer_past=None,
use_cache=False,
output_attentions=False,
):
has_layer_past = layer_past is not None
# Compute QKV
# Attention heads [batch, seq_len, hidden_size]
# --> [batch, seq_len, (np * 3 * head_size)]
qkv = self.query_key_value(hidden_states)
# [batch, seq_len, (num_heads * 3 * head_size)]
# --> [batch, seq_len, num_heads, 3 * head_size]
new_qkv_shape = qkv.size()[:-1] + (self.num_attention_heads, 3 * self.head_size)
qkv = qkv.view(*new_qkv_shape).permute(0, 2, 1, 3)
# [batch, seq_len, num_attention_heads, 3 * head_size] --> 3 [batch, num_attention_heads, seq_len, head_size]
query, key, value = qkv.split(self.head_size, -1)
# Compute token offset for rotary embeddings (when decoding)
seq_len = key.shape[-2]
if has_layer_past:
seq_len += layer_past[0].shape[-2]
# Compute rotary embeddings on rotary_ndims
query_rot = query[..., : self.rotary_ndims]
key_rot = key[..., : self.rotary_ndims]
query_rot, key_rot = self.rotary_emb(query_rot, key_rot, position_ids, seq_len)
query[..., : self.rotary_ndims] = query_rot
key[..., : self.rotary_ndims] = key_rot
if CUSTOM_KERNELS_ENABLED:
attn_output, present, attn_weights = fused_attention_cuda.forward(
query,
key,
value,
layer_past,
attention_mask,
head_mask,
self.inv_norm_factor,
self.num_attention_heads,
use_cache,
)
else:
# Cache QKV values
if has_layer_past:
past_key = layer_past[0]
past_value = layer_past[1]
key = torch.cat((past_key, key), dim=-2)
value = torch.cat((past_value, value), dim=-2)
present = (key, value) if use_cache else None
# Compute attention
attn_output, attn_weights = self._attn(
query, key, value, attention_mask, head_mask
)
# Reshape outputs
attn_output = self._merge_heads(
attn_output, self.num_attention_heads, self.head_size
)
attn_output = self.dense(attn_output)
outputs = (attn_output, present)
if output_attentions:
outputs += (attn_weights,)
return outputs
@classmethod
def _split_heads(cls, tensor, num_attention_heads, attn_head_size):
"""
Splits hidden dim into attn_head_size and num_attention_heads
"""
# tensor: [bs, seq_len, hidden_size]
new_shape = tensor.size()[:-1] + (num_attention_heads, attn_head_size)
# -> [bs, seq_len, num_attention_heads, attn_head_size]
tensor = tensor.view(new_shape)
# -> [bs, num_attention_heads, seq_len, attn_head_size]
tensor = tensor.permute(0, 2, 1, 3)
return tensor
@classmethod
def _merge_heads(cls, tensor, num_attention_heads, attn_head_size):
"""
Merges attn_head_size dim and num_attn_heads dim into hidden dim
"""
# tensor [bs, num_attention_heads, seq_len, attn_head_size]
tensor = tensor.permute(0, 2, 1, 3).contiguous()
# -> [bs, seq_len, num_attention_heads, attn_head_size]
tensor = tensor.view(
tensor.size(0), tensor.size(1), num_attention_heads * attn_head_size
)
# -> [bs, seq_len, hidden_size]
return tensor
def _attn(self, query, key, value, attention_mask=None, head_mask=None):
# q, k, v: [bs, num_attention_heads, seq_len, attn_head_size]
# compute causal mask from causal mask buffer
batch_size, num_attention_heads, query_length, attn_head_size = query.size()
key_length = key.size(-2)
query = query.view(
batch_size * num_attention_heads, query_length, attn_head_size
)
key = key.view(batch_size * num_attention_heads, key_length, attn_head_size)
attn_scores = torch.zeros(
1,
dtype=query.dtype,
device=key.device,
).expand(batch_size * num_attention_heads, query_length, key_length)
attn_scores = torch.baddbmm(
attn_scores,
query,
key.transpose(1, 2),
beta=1.0,
alpha=self.inv_norm_factor,
)
# cast attention scores to fp32, compute scaled softmax and cast back to initial dtype - [batch_size, num_heads, q_length, kv_length]
input_dtype = attn_scores.dtype
if input_dtype in [torch.float16, torch.bfloat16]:
attn_scores = attn_scores.to(torch.float)
attn_scores = torch.where(
attention_mask, torch.finfo(attn_scores.dtype).min, attn_scores
)
attn_scores = attn_scores.view(
batch_size, num_attention_heads, query_length, key_length
)
attn_weights = nn.functional.softmax(attn_scores, dim=-1)
attn_weights = attn_weights.to(value.dtype)
# Mask heads if we want to
if head_mask is not None:
attn_weights = attn_weights * head_mask
attn_output = torch.matmul(attn_weights, value)
return attn_output, attn_weights
class RotaryEmbedding(torch.nn.Module):
def __init__(self, dim, max_position_embeddings, base=10000, device=None):
super().__init__()
self.true_inv_freq = 1.0 / (
base ** (torch.arange(0, dim, 2).float().to(device) / dim)
)
self.register_buffer("inv_freq", self.true_inv_freq)
# Build here to make `torch.jit.trace` work.
self.max_seq_len_cached = max_position_embeddings
self.cos_cached = None
self.sin_cached = None
@staticmethod
def rotate_half(x):
"""Rotates half the hidden dims of the input."""
x1 = x[..., : x.shape[-1] // 2]
x2 = x[..., x.shape[-1] // 2 :]
return torch.cat((-x2, x1), dim=-1)
@staticmethod
def _create_cos_sin(inv_freq, max_position_embeddings, dtype, device):
t = torch.arange(
max_position_embeddings, device=inv_freq.device, dtype=inv_freq.dtype
)
freqs = torch.einsum("i,j->ij", t, inv_freq)
# Different from paper, but it uses a different permutation in order to obtain the same calculation
emb = torch.cat((freqs, freqs), dim=-1)
return emb.cos().to(device).to(dtype), emb.sin().to(device).to(dtype)
def forward(self, q, k, position_ids, seq_len=None):
# x: [bs, num_attention_heads, seq_len, head_size]
if (
seq_len > self.max_seq_len_cached
or self.cos_cached is None
or self.sin_cached is None
):
if seq_len > self.max_seq_len_cached:
self.max_seq_len_cached = seq_len
self.cos_cached, self.sin_cached = self._create_cos_sin(
self.true_inv_freq, self.max_seq_len_cached, q.dtype, q.device
)
return rotary_forward(q, k, self.cos_cached, self.sin_cached, position_ids)
@torch.jit.script
def rotary_forward(q, k, cos, sin, position_ids):
cos = cos[position_ids].unsqueeze(1)
sin = sin[position_ids].unsqueeze(1)
chunk_size = q.shape[-1] // 2
q1, q2 = q.split(chunk_size, -1)
q_rotated = torch.cat((-q2, q1), dim=-1)
k1, k2 = k.split(chunk_size, -1)
k_rotated = torch.cat((-k2, k1), dim=-1)
q_embed = (q * cos) + (q_rotated * sin)
k_embed = (k * cos) + (k_rotated * sin)
return q_embed, k_embed
class GPTNeoXMLP(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
self.act = (
ACT2FN[config.hidden_act]
if "gelu_fast" not in config.hidden_act
else lambda x: torch.nn.functional.gelu(x, approximate="tanh")
)
self.dense_h_to_4h = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.dense_h_to_4h", weights=weights, bias=True
)
self.dense_4h_to_h = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.dense_4h_to_h", weights=weights, bias=True
)
def forward(self, hidden_states):
hidden_states = self.dense_h_to_4h(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.dense_4h_to_h(hidden_states)
return hidden_states
class GPTNeoXLayer(nn.Module):
def __init__(self, layer_id, config, weights):
super().__init__()
self.use_parallel_residual = config.use_parallel_residual
self.input_layernorm = nn.LayerNorm.load(
prefix=f"gpt_neox.layers.{layer_id}.input_layernorm",
weights=weights,
eps=config.layer_norm_eps,
)
self.post_attention_layernorm = nn.LayerNorm.load(
prefix=f"gpt_neox.layers.{layer_id}.post_attention_layernorm",
weights=weights,
eps=config.layer_norm_eps,
)
self.attention = GPTNeoXAttention(
config, prefix=f"gpt_neox.layers.{layer_id}.attention", weights=weights
)
self.mlp = GPTNeoXMLP(
config, prefix=f"gpt_neox.layers.{layer_id}.mlp", weights=weights
)
def forward(
self,
hidden_states,
position_ids,
attention_mask=None,
head_mask=None,
use_cache=False,
layer_past=None,
output_attentions=False,
):
attention_layer_outputs = self.attention(
self.input_layernorm(hidden_states),
attention_mask=attention_mask,
position_ids=position_ids,
layer_past=layer_past,
head_mask=head_mask,
use_cache=use_cache,
output_attentions=output_attentions,
)
attn_output = attention_layer_outputs[
0
] # output_attn: attn_output, present, (attn_weights)
outputs = attention_layer_outputs[1:]
if self.use_parallel_residual:
# pseudocode:
# x = x + attn(ln1(x)) + mlp(ln2(x))
mlp_output = self.mlp(self.post_attention_layernorm(hidden_states))
hidden_states = mlp_output + attn_output + hidden_states
else:
# pseudocode:
# x = x + attn(ln1(x))
# x = x + mlp(ln2(x))
attn_output = attn_output + hidden_states
mlp_output = self.mlp(self.post_attention_layernorm(attn_output))
hidden_states = mlp_output + attn_output
if use_cache:
outputs = (
hidden_states,
) + outputs # hidden_states, present, (attn_weights)
else:
outputs = (hidden_states,) + outputs[1:] # hidden_states, (attn_weights)
return outputs
class GPTNeoXModel(GPTNeoXPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.config = config
self.num_attention_heads = config.num_attention_heads
self.embed_in = TensorParallelEmbedding(
prefix="gpt_neox.embed_in", weights=weights
)
self.layers = nn.ModuleList(
[
GPTNeoXLayer(layer_id, config, weights)
for layer_id in range(config.num_hidden_layers)
]
)
self.final_layer_norm = nn.LayerNorm.load(
prefix="gpt_neox.final_layer_norm",
weights=weights,
eps=config.layer_norm_eps,
)
self.tp_world_size = weights.process_group.size()
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
position_ids=None,
attention_mask: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPast]:
r"""
past_key_values (`tuple(tuple(torch.FloatTensor))` of length `config.n_layers` with each tuple having 4 tensors of shape `(batch_size, num_heads, sequence_length - 1, embed_size_per_head)`):
Contains precomputed key and value hidden states of the attention blocks. Can be used to speed up decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
"""
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
if input_ids is not None and inputs_embeds is not None:
raise ValueError(
"You cannot specify both input_ids and inputs_embeds at the same time"
)
elif input_ids is not None:
input_shape = input_ids.size()
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError("You have to specify either input_ids or inputs_embeds")
batch_size, seq_length = input_shape
if past_key_values is None:
past_length = 0
past_key_values = tuple([None] * self.config.num_hidden_layers)
else:
past_length = past_key_values[0][0].size(-2)
if position_ids is None:
device = input_ids.device if input_ids is not None else inputs_embeds.device
position_ids = torch.arange(
past_length, seq_length + past_length, dtype=torch.long, device=device
)
position_ids = position_ids.unsqueeze(0).view(-1, seq_length)
else:
position_ids = position_ids.view(-1, seq_length).long()
if inputs_embeds is None:
inputs_embeds = self.embed_in(input_ids)
hidden_states = inputs_embeds
# Attention mask.
seq_length_with_past = seq_length
past_key_values_length = 0
if past_key_values[0] is not None:
past_key_values_length = past_key_values[0][0].shape[-1]
seq_length_with_past = seq_length_with_past + past_key_values_length
if attention_mask is None:
attention_mask = torch.ones(
(batch_size, seq_length_with_past), device=hidden_states.device
)
else:
attention_mask = attention_mask.to(hidden_states.device)
causal_mask = prepare_attn_mask(
attention_mask,
input_shape=(batch_size, seq_length),
past_key_values_length=past_key_values_length,
)
assert self.num_attention_heads % self.tp_world_size == 0
block_size = self.num_attention_heads // self.tp_world_size
causal_mask = torch.repeat_interleave(causal_mask, block_size, dim=0)
# Prepare head mask if needed
# 1.0 in head_mask indicate we keep the head
# attention_probs has shape bsz x n_heads x N x N
# input head_mask has shape [num_heads] or [num_hidden_layers x num_heads]
# and head_mask is converted to shape [num_hidden_layers x batch x num_heads x seq_length x seq_length]
head_mask = self.get_head_mask(head_mask, self.config.num_hidden_layers)
presents = () if use_cache else None
all_attentions = () if output_attentions else None
all_hidden_states = () if output_hidden_states else None
for i, (layer, layer_past) in enumerate(zip(self.layers, past_key_values)):
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
outputs = layer(
hidden_states,
position_ids=position_ids,
attention_mask=causal_mask,
head_mask=head_mask[i],
layer_past=layer_past,
use_cache=use_cache,
output_attentions=output_attentions,
)
hidden_states = outputs[0]
if use_cache is True:
presents = presents + (outputs[1],)
if output_attentions:
all_attentions = all_attentions + (outputs[2 if use_cache else 1],)
hidden_states = self.final_layer_norm(hidden_states)
# Add last hidden state
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [hidden_states, presents, all_hidden_states, all_attentions]
if v is not None
)
return BaseModelOutputWithPast(
last_hidden_state=hidden_states,
past_key_values=presents,
hidden_states=all_hidden_states,
attentions=all_attentions,
)
class GPTNeoxForCausalLM(GPTNeoXPreTrainedModel):
_keys_to_ignore_on_load_missing = [r"position_ids", r"predictions.decoder.bias"]
def __init__(self, config, weights):
super().__init__(config)
self.gpt_neox = GPTNeoXModel(config, weights)
self.embed_out = TensorParallelHead.load(
config, prefix="embed_out", weights=weights
)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
position_ids: Optional[torch.LongTensor] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
past_key_values: Optional[Tuple[Tuple[torch.FloatTensor]]] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, CausalLMOutputWithPast]:
r"""
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of shape
`(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of shape
`(batch_size, num_heads, encoder_sequence_length, embed_size_per_head)`. The two additional tensors are
only required when the model is used as a decoder in a Sequence to Sequence model.
Contains pre-computed hidden-states (key and values in the self-attention blocks that can be used (see
`past_key_values` input) to speed up sequential decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those that
don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of all
`decoder_input_ids` of shape `(batch_size, sequence_length)`.
labels (`torch.LongTensor` of shape `(batch_size, sequence_length)`, *optional*):
Labels for computing the left-to-right language modeling loss (next word prediction). Indices should be in
`[-100, 0, ..., config.vocab_size]` (see `input_ids` docstring) Tokens with indices set to `-100` are
ignored (masked), the loss is only computed for the tokens with labels n `[0, ..., config.vocab_size]`.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding (see
`past_key_values`).
Returns:
Example:
```python
>>> from transformers import AutoTokenizer, GPTNeoXForCausalLM, GPTNeoXConfig
>>> import torch
>>> tokenizer = AutoTokenizer.from_pretrained("EleutherAI/gpt-neox-20b")
>>> config = GPTNeoXConfig.from_pretrained("EleutherAI/gpt-neox-20b")
>>> config.is_decoder = True
>>> model = GPTNeoXForCausalLM.from_pretrained("EleutherAI/gpt-neox-20b", config=config)
>>> inputs = tokenizer("Hello, my dog is cute", return_tensors="pt")
>>> outputs = model(**inputs)
>>> prediction_logits = outputs.logits
```"""
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
outputs = self.gpt_neox(
input_ids,
attention_mask=attention_mask,
position_ids=position_ids,
head_mask=head_mask,
inputs_embeds=inputs_embeds,
past_key_values=past_key_values,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
hidden_states = outputs[0]
lm_logits = self.embed_out(hidden_states)
lm_loss = None
if labels is not None:
# move labels to correct device to enable model parallelism
labels = labels.to(lm_logits.device)
# we are doing next-token prediction; shift prediction scores and input ids by one
shift_logits = lm_logits[:, :-1, :].contiguous()
labels = labels[:, 1:].contiguous()
loss_fct = CrossEntropyLoss()
lm_loss = loss_fct(
shift_logits.view(-1, shift_logits.size(-1)), labels.view(-1)
)
if not return_dict:
output = (lm_logits,) + outputs[1:]
return ((lm_loss,) + output) if lm_loss is not None else output
return CausalLMOutputWithPast(
loss=lm_loss,
logits=lm_logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def prepare_inputs_for_generation(
self,
input_ids,
past_key_values=None,
attention_mask=None,
inputs_embeds=None,
**kwargs,
):
input_shape = input_ids.shape
# cut decoder_input_ids if past is used
if past_key_values and past_key_values[0] is not None:
input_ids = input_ids[:, -1:]
position_ids = kwargs.get("position_ids", None)
if attention_mask is not None and position_ids is None:
# create position_ids on the fly for batch generation
position_ids = attention_mask.long().cumsum(-1) - 1
position_ids.masked_fill_(attention_mask == 0, 1)
if past_key_values:
position_ids = position_ids[:, -1].unsqueeze(-1)
# if model is used as a decoder in encoder-decoder model, the decoder attention mask is created on the fly
if attention_mask is None:
attention_mask = input_ids.new_ones(input_shape)
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
else:
model_inputs = {"input_ids": input_ids}
model_inputs.update(
{
"attention_mask": attention_mask,
"past_key_values": past_key_values,
"position_ids": position_ids,
}
)
return model_inputs
def _reorder_cache(self, past_key_values, beam_idx):
reordered_past = ()
for layer_past in past_key_values:
reordered_past += (
tuple(
past_state.index_select(0, beam_idx)
for past_state in layer_past[:2]
)
+ layer_past[2:],
)
return reordered_past
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/opt_modeling.py | # coding=utf-8
# Copyright 2022 The Fairseq Authors and The HuggingFace Inc. team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" PyTorch OPT model."""
import random
from typing import List, Optional, Tuple, Union
import torch
import torch.utils.checkpoint
from torch import nn
from transformers.activations import ACT2FN
from transformers.modeling_outputs import (
BaseModelOutputWithPast,
CausalLMOutputWithPast,
)
from transformers.modeling_utils import PreTrainedModel
from transformers import OPTConfig
from text_generation_server.utils.layers import (
FastLinear,
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelRowLinear,
TensorParallelHead,
)
EPS = 1e-5
# Copied from transformers.models.bart.modeling_bart._make_causal_mask
def _make_causal_mask(
input_ids_shape: torch.Size,
dtype: torch.dtype,
device: torch.device,
past_key_values_length: int = 0,
):
"""
Make causal mask used for bi-directional self-attention.
"""
bsz, tgt_len = input_ids_shape
mask = torch.full(
(tgt_len, tgt_len),
torch.tensor(torch.finfo(dtype).min, device=device),
device=device,
)
mask_cond = torch.arange(mask.size(-1), device=device)
mask.masked_fill_(mask_cond < (mask_cond + 1).view(mask.size(-1), 1), 0)
mask = mask.to(dtype)
if past_key_values_length > 0:
mask = torch.cat(
[
torch.zeros(
tgt_len, past_key_values_length, dtype=dtype, device=device
),
mask,
],
dim=-1,
)
return mask[None, None, :, :].expand(
bsz, 1, tgt_len, tgt_len + past_key_values_length
)
def _expand_mask(mask: torch.Tensor, dtype: torch.dtype, tgt_len: Optional[int] = None):
"""
Expands attention_mask from `[bsz, seq_len]` to `[bsz, 1, tgt_seq_len, src_seq_len]`.
"""
bsz, src_len = mask.size()
tgt_len = tgt_len if tgt_len is not None else src_len
expanded_mask = mask[:, None, None, :].expand(bsz, 1, tgt_len, src_len).to(dtype)
inverted_mask = 1.0 - expanded_mask
return inverted_mask.masked_fill(
inverted_mask.to(torch.bool), torch.finfo(dtype).min
)
class OPTLearnedPositionalEmbedding(nn.Module):
"""
This module learns positional embeddings up to a fixed maximum size.
"""
def __init__(self, weights):
super().__init__()
self.offset = 2
self.weight = nn.Parameter(
weights.get_tensor("model.decoder.embed_positions.weight")
)
def forward(
self, attention_mask: torch.LongTensor, past_key_values_length: int = 0
):
"""`input_ids_shape` is expected to be [bsz x seqlen]."""
attention_mask = attention_mask.long()
# create positions depending on attention_mask
positions = (
torch.cumsum(attention_mask, dim=1).type_as(attention_mask) * attention_mask
).long() - 1
# cut positions if `past_key_values_length` is > 0
positions = positions[:, past_key_values_length:]
return torch.nn.functional.embedding(positions + self.offset, self.weight)
class OPTAttention(nn.Module):
"""Multi-headed attention from 'Attention Is All You Need' paper"""
def __init__(
self,
config,
prefix,
weights,
is_decoder: bool = False,
bias: bool = True,
process_group=None,
):
super().__init__()
hidden_size = config.hidden_size
num_heads = config.num_attention_heads
self.hidden_size = hidden_size
self.num_heads = num_heads
self.dropout = config.dropout
self.head_dim = hidden_size // num_heads
if (self.head_dim * num_heads) != self.hidden_size:
raise ValueError(
f"hidden_size must be divisible by num_heads (got `hidden_size`: {self.hidden_size}"
f" and `num_heads`: {num_heads})."
)
self.scaling = self.head_dim**-0.5
self.is_decoder = is_decoder
process_group = weights.process_group
if self.num_heads % weights.process_group.size() != 0:
raise ValueError(
f"`num_heads` must be divisible by `num_shards` (got `num_heads`: {self.num_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.num_heads = self.num_heads // process_group.size()
self.hidden_size = self.hidden_size // process_group.size()
self.q_proj = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.q_proj", weights=weights, bias=bias
)
self.k_proj = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.k_proj", weights=weights, bias=bias
)
self.v_proj = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.v_proj", weights=weights, bias=bias
)
self.out_proj = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.out_proj", weights=weights, bias=bias
)
def _shape(self, tensor: torch.Tensor, seq_len: int, bsz: int):
return (
tensor.view(bsz, seq_len, self.num_heads, self.head_dim)
.transpose(1, 2)
.contiguous()
)
def forward(
self,
hidden_states: torch.Tensor,
key_value_states: Optional[torch.Tensor] = None,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
attention_mask: Optional[torch.Tensor] = None,
layer_head_mask: Optional[torch.Tensor] = None,
output_attentions: bool = False,
) -> Tuple[torch.Tensor, Optional[torch.Tensor], Optional[Tuple[torch.Tensor]]]:
"""Input shape: Batch x Time x Channel"""
# if key_value_states are provided this layer is used as a cross-attention layer
# for the decoder
is_cross_attention = key_value_states is not None
bsz, tgt_len, _ = hidden_states.size()
# get query proj
query_states = self.q_proj(hidden_states) * self.scaling
# get key, value proj
if is_cross_attention and past_key_value is not None:
# reuse k,v, cross_attentions
key_states = past_key_value[0]
value_states = past_key_value[1]
elif is_cross_attention:
# cross_attentions
key_states = self._shape(self.k_proj(key_value_states), -1, bsz)
value_states = self._shape(self.v_proj(key_value_states), -1, bsz)
elif past_key_value is not None:
# reuse k, v, self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
key_states = torch.cat([past_key_value[0], key_states], dim=2)
value_states = torch.cat([past_key_value[1], value_states], dim=2)
else:
# self_attention
key_states = self._shape(self.k_proj(hidden_states), -1, bsz)
value_states = self._shape(self.v_proj(hidden_states), -1, bsz)
if self.is_decoder:
# if cross_attention save Tuple(torch.Tensor, torch.Tensor) of all cross attention key/value_states.
# Further calls to cross_attention layer can then reuse all cross-attention
# key/value_states (first "if" case)
# if uni-directional self-attention (decoder) save Tuple(torch.Tensor, torch.Tensor) of
# all previous decoder key/value_states. Further calls to uni-directional self-attention
# can concat previous decoder key/value_states to current projected key/value_states (third "elif" case)
# if encoder bi-directional self-attention `past_key_value` is always `None`
past_key_value = (key_states, value_states)
proj_shape = (bsz * self.num_heads, -1, self.head_dim)
query_states = self._shape(query_states, tgt_len, bsz).view(*proj_shape)
key_states = key_states.view(*proj_shape)
value_states = value_states.view(*proj_shape)
src_len = key_states.size(1)
attn_weights = torch.bmm(query_states, key_states.transpose(1, 2))
if attn_weights.size() != (bsz * self.num_heads, tgt_len, src_len):
raise ValueError(
f"Attention weights should be of size {(bsz * self.num_heads, tgt_len, src_len)}, but is"
f" {attn_weights.size()}"
)
if attention_mask is not None:
if attention_mask.size() != (bsz, 1, tgt_len, src_len):
raise ValueError(
f"Attention mask should be of size {(bsz, 1, tgt_len, src_len)}, but is {attention_mask.size()}"
)
attn_weights = (
attn_weights.view(bsz, self.num_heads, tgt_len, src_len)
+ attention_mask
)
attn_weights = torch.max(
attn_weights, torch.tensor(torch.finfo(attn_weights.dtype).min)
)
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
# upcast to fp32 if the weights are in fp16. Please see https://github.com/huggingface/transformers/pull/17437
if attn_weights.dtype == torch.float16:
attn_weights = nn.functional.softmax(
attn_weights, dim=-1, dtype=torch.float32
).to(torch.float16)
else:
attn_weights = nn.functional.softmax(attn_weights, dim=-1)
if layer_head_mask is not None:
if layer_head_mask.size() != (self.num_heads,):
raise ValueError(
f"Head mask for a single layer should be of size {(self.num_heads,)}, but is"
f" {layer_head_mask.size()}"
)
attn_weights = layer_head_mask.view(1, -1, 1, 1) * attn_weights.view(
bsz, self.num_heads, tgt_len, src_len
)
attn_weights = attn_weights.view(bsz * self.num_heads, tgt_len, src_len)
if output_attentions:
# this operation is a bit awkward, but it's required to
# make sure that attn_weights keeps its gradient.
# In order to do so, attn_weights have to be reshaped
# twice and have to be reused in the following
attn_weights_reshaped = attn_weights.view(
bsz, self.num_heads, tgt_len, src_len
)
attn_weights = attn_weights_reshaped.view(
bsz * self.num_heads, tgt_len, src_len
)
else:
attn_weights_reshaped = None
attn_probs = nn.functional.dropout(
attn_weights, p=self.dropout, training=self.training
)
attn_output = torch.bmm(attn_probs, value_states)
if attn_output.size() != (bsz * self.num_heads, tgt_len, self.head_dim):
raise ValueError(
f"`attn_output` should be of size {(bsz, self.num_heads, tgt_len, self.head_dim)}, but is"
f" {attn_output.size()}"
)
attn_output = attn_output.view(bsz, self.num_heads, tgt_len, self.head_dim)
attn_output = attn_output.transpose(1, 2)
# Use the `hidden_size` from the config (stored in the class) rather than `hidden_state` because `attn_output` can be
# partitioned aross GPUs when using tensor-parallelism.
attn_output = attn_output.reshape(bsz, tgt_len, self.hidden_size)
attn_output = self.out_proj(attn_output)
return attn_output, attn_weights_reshaped, past_key_value
class OPTDecoderLayer(nn.Module):
def __init__(self, layer_id: int, config: OPTConfig, weights):
super().__init__()
self.process_group = weights.process_group
self.hidden_size = config.hidden_size
prefix = f"model.decoder.layers.{layer_id}"
self.self_attn = OPTAttention(
config,
prefix=f"{prefix}.self_attn",
weights=weights,
is_decoder=True,
bias=config.enable_bias,
)
self.do_layer_norm_before = config.do_layer_norm_before
self.dropout = config.dropout
self.activation_fn = ACT2FN[config.activation_function]
self.self_attn_layer_norm = nn.LayerNorm.load(
prefix=f"{prefix}.self_attn_layer_norm", weights=weights, eps=EPS
)
self.fc1 = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.fc1", weights=weights, bias=config.enable_bias
)
self.fc2 = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.fc2", weights=weights, bias=config.enable_bias
)
self.final_layer_norm = nn.LayerNorm.load(
prefix=f"{prefix}.final_layer_norm", weights=weights, eps=EPS
)
def forward(
self,
hidden_states: torch.Tensor,
attention_mask: Optional[torch.Tensor] = None,
layer_head_mask: Optional[torch.Tensor] = None,
output_attentions: Optional[bool] = False,
use_cache: Optional[bool] = False,
past_key_value: Optional[Tuple[torch.Tensor]] = None,
) -> Tuple[
torch.FloatTensor, Optional[Tuple[torch.FloatTensor, torch.FloatTensor]]
]:
"""
Args:
hidden_states (`torch.FloatTensor`): input to the layer of shape `(batch, seq_len, hidden_size)`
attention_mask (`torch.FloatTensor`, *optional*): attention mask of size
`(batch, 1, tgt_len, src_len)` where padding elements are indicated by very large negative values.
layer_head_mask (`torch.FloatTensor`, *optional*): mask for attention heads in a given layer of size
`(encoder_attention_heads,)`.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
use_cache (`bool`, *optional*):
If set to `True`, `past_key_values` key value states are returned and can be used to speed up decoding
(see `past_key_values`).
past_key_value (`Tuple(torch.FloatTensor)`, *optional*): cached past key and value projection states
"""
residual = hidden_states
# 125m, 1.7B, ..., 175B applies layer norm BEFORE attention
if self.do_layer_norm_before:
hidden_states = self.self_attn_layer_norm(hidden_states)
# Self Attention
hidden_states, self_attn_weights, present_key_value = self.self_attn(
hidden_states=hidden_states,
past_key_value=past_key_value,
attention_mask=attention_mask,
layer_head_mask=layer_head_mask,
output_attentions=output_attentions,
)
hidden_states = nn.functional.dropout(
hidden_states, p=self.dropout, training=self.training
)
hidden_states = residual + hidden_states
# 350m applies layer norm AFTER attention
if not self.do_layer_norm_before:
hidden_states = self.self_attn_layer_norm(hidden_states)
# Fully Connected
hidden_states_shape = hidden_states.shape
hidden_states = hidden_states.reshape(-1, hidden_states.size(-1))
residual = hidden_states
# 125m, 1.7B, ..., 175B applies layer norm BEFORE attention
if self.do_layer_norm_before:
hidden_states = self.final_layer_norm(hidden_states)
hidden_states = self.fc1(hidden_states)
hidden_states = self.activation_fn(hidden_states)
hidden_states = self.fc2(hidden_states)
hidden_states = nn.functional.dropout(
hidden_states, p=self.dropout, training=self.training
)
hidden_states = (residual + hidden_states).view(hidden_states_shape)
# 350m applies layer norm AFTER attention
if not self.do_layer_norm_before:
hidden_states = self.final_layer_norm(hidden_states)
outputs = (hidden_states,)
if output_attentions:
outputs += (self_attn_weights,)
if use_cache:
outputs += (present_key_value,)
return outputs
class OPTPreTrainedModel(PreTrainedModel):
config_class = OPTConfig
class OPTDecoder(OPTPreTrainedModel):
def __init__(self, config: OPTConfig, weights):
super().__init__(config)
self.dropout = config.dropout
self.layerdrop = config.layerdrop
self.padding_idx = config.pad_token_id
self.max_target_positions = config.max_position_embeddings
self.vocab_size = config.vocab_size
self.embed_tokens = TensorParallelEmbedding(
prefix="model.decoder.embed_tokens", weights=weights
)
self.embed_positions = OPTLearnedPositionalEmbedding(weights)
if config.word_embed_proj_dim != config.hidden_size:
self.project_out = FastLinear.load(
config, prefix="model.decoder.project_out", bias=False
)
else:
self.project_out = None
if config.word_embed_proj_dim != config.hidden_size:
self.project_in = FastLinear.load(
config, prefix="model.decoder.project_in", bias=False
)
else:
self.project_in = None
# Note that the only purpose of `config._remove_final_layer_norm` is to keep backward compatibility
# with checkpoints that have been fine-tuned before transformers v4.20.1
# see https://github.com/facebookresearch/metaseq/pull/164
if config.do_layer_norm_before and not config._remove_final_layer_norm:
self.final_layer_norm = nn.LayerNorm.load(
prefix="model.decoder.final_layer_norm", weights=weights, eps=EPS
)
else:
self.final_layer_norm = None
self.layers = nn.ModuleList(
[
OPTDecoderLayer(layer_id, config, weights)
for layer_id in range(config.num_hidden_layers)
]
)
# Copied from transformers.models.bart.modeling_bart.BartDecoder._prepare_decoder_attention_mask
def _prepare_decoder_attention_mask(
self, attention_mask, input_shape, inputs_embeds, past_key_values_length
):
# create causal mask
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
combined_attention_mask = None
if input_shape[-1] > 1:
combined_attention_mask = _make_causal_mask(
input_shape,
inputs_embeds.dtype,
device=inputs_embeds.device,
past_key_values_length=past_key_values_length,
)
if attention_mask is not None:
# [bsz, seq_len] -> [bsz, 1, tgt_seq_len, src_seq_len]
expanded_attn_mask = _expand_mask(
attention_mask, inputs_embeds.dtype, tgt_len=input_shape[-1]
).to(inputs_embeds.device)
combined_attention_mask = (
expanded_attn_mask
if combined_attention_mask is None
else expanded_attn_mask + combined_attention_mask
)
return combined_attention_mask
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPast]:
r"""
Args:
input_ids (`torch.LongTensor` of shape `(batch_size, sequence_length)`):
Indices of input sequence tokens in the vocabulary. Padding will be ignored by default should you
provide it.
Indices can be obtained using [`AutoTokenizer`]. See [`PreTrainedTokenizer.encode`] and
[`PreTrainedTokenizer.__call__`] for details.
[What are input IDs?](../glossary#input-ids)
attention_mask (`torch.Tensor` of shape `(batch_size, sequence_length)`, *optional*):
Mask to avoid performing attention on padding token indices. Mask values selected in `[0, 1]`:
- 1 for tokens that are **not masked**,
- 0 for tokens that are **masked**.
[What are attention masks?](../glossary#attention-mask)
head_mask (`torch.Tensor` of shape `(num_hidden_layers, num_attention_heads)`, *optional*):
Mask to nullify selected heads of the attention modules. Mask values selected in `[0, 1]`:
- 1 indicates the head is **not masked**,
- 0 indicates the head is **masked**.
past_key_values (`tuple(tuple(torch.FloatTensor))`, *optional*, returned when `use_cache=True` is passed or when `config.use_cache=True`):
Tuple of `tuple(torch.FloatTensor)` of length `config.n_layers`, with each tuple having 2 tensors of
shape `(batch_size, num_heads, sequence_length, embed_size_per_head)`) and 2 additional tensors of
Contains pre-computed hidden-states (key and values in the self-attention blocks and in the
cross-attention blocks) that can be used (see `past_key_values` input) to speed up sequential decoding.
If `past_key_values` are used, the user can optionally input only the last `decoder_input_ids` (those
that don't have their past key value states given to this model) of shape `(batch_size, 1)` instead of
all `decoder_input_ids` of shape `(batch_size, sequence_length)`.
inputs_embeds (`torch.FloatTensor` of shape `(batch_size, sequence_length, hidden_size)`, *optional*):
Optionally, instead of passing `input_ids` you can choose to directly pass an embedded representation.
This is useful if you want more control over how to convert `input_ids` indices into associated vectors
than the model's internal embedding lookup matrix.
output_attentions (`bool`, *optional*):
Whether or not to return the attentions tensors of all attention layers. See `attentions` under
returned tensors for more detail.
output_hidden_states (`bool`, *optional*):
Whether or not to return the hidden states of all layers. See `hidden_states` under returned tensors
for more detail.
return_dict (`bool`, *optional*):
Whether or not to return a [`~utils.ModelOutput`] instead of a plain tuple.
"""
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
# retrieve input_ids and inputs_embeds
if input_ids is not None and inputs_embeds is not None:
raise ValueError(
"You cannot specify both decoder_input_ids and decoder_inputs_embeds at the same time"
)
elif input_ids is not None:
input_shape = input_ids.size()
input_ids = input_ids.view(-1, input_shape[-1])
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
raise ValueError(
"You have to specify either decoder_input_ids or decoder_inputs_embeds"
)
if inputs_embeds is None:
inputs_embeds = self.embed_tokens(input_ids)
batch_size, seq_length = input_shape
past_key_values_length = (
past_key_values[0][0].shape[2] if past_key_values is not None else 0
)
# required mask seq length can be calculated via length of past
mask_seq_length = past_key_values_length + seq_length
# embed positions
if attention_mask is None:
attention_mask = torch.ones(
batch_size, mask_seq_length, device=inputs_embeds.device
)
causal_attention_mask = self._prepare_decoder_attention_mask(
attention_mask, input_shape, inputs_embeds, past_key_values_length
)
pos_embeds = self.embed_positions(attention_mask, past_key_values_length)
if self.project_in is not None:
inputs_embeds = self.project_in(inputs_embeds)
hidden_states = inputs_embeds + pos_embeds
# decoder layers
all_hidden_states = () if output_hidden_states else None
all_self_attns = () if output_attentions else None
next_decoder_cache = () if use_cache else None
# check if head_mask has a correct number of layers specified if desired
for attn_mask, mask_name in zip([head_mask], ["head_mask"]):
if attn_mask is not None:
if attn_mask.size()[0] != (len(self.layers)):
raise ValueError(
f"The `{mask_name}` should be specified for {len(self.layers)} layers, but it is for"
f" {head_mask.size()[0]}."
)
for idx, decoder_layer in enumerate(self.layers):
# add LayerDrop (see https://arxiv.org/abs/1909.11556 for description)
if output_hidden_states:
all_hidden_states += (hidden_states,)
dropout_probability = random.uniform(0, 1)
if self.training and (dropout_probability < self.layerdrop):
continue
past_key_value = (
past_key_values[idx] if past_key_values is not None else None
)
layer_outputs = decoder_layer(
hidden_states,
attention_mask=causal_attention_mask,
layer_head_mask=(head_mask[idx] if head_mask is not None else None),
past_key_value=past_key_value,
output_attentions=output_attentions,
use_cache=use_cache,
)
hidden_states = layer_outputs[0]
if use_cache:
next_decoder_cache += (layer_outputs[2 if output_attentions else 1],)
if output_attentions:
all_self_attns += (layer_outputs[1],)
if self.final_layer_norm is not None:
hidden_states = self.final_layer_norm(hidden_states)
if self.project_out is not None:
hidden_states = self.project_out(hidden_states)
# add hidden states from the last decoder layer
if output_hidden_states:
all_hidden_states += (hidden_states,)
next_cache = next_decoder_cache if use_cache else None
if not return_dict:
return tuple(
v
for v in [hidden_states, next_cache, all_hidden_states, all_self_attns]
if v is not None
)
return BaseModelOutputWithPast(
last_hidden_state=hidden_states,
past_key_values=next_cache,
hidden_states=all_hidden_states,
attentions=all_self_attns,
)
class OPTModel(OPTPreTrainedModel):
def __init__(self, config: OPTConfig, weights):
super().__init__(config)
self.decoder = OPTDecoder(config, weights)
# Initialize weights and apply final processing
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, BaseModelOutputWithPast]:
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
# decoder outputs consists of (dec_features, past_key_value, dec_hidden, dec_attn)
decoder_outputs = self.decoder(
input_ids=input_ids,
attention_mask=attention_mask,
head_mask=head_mask,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
if not return_dict:
return decoder_outputs
return BaseModelOutputWithPast(
last_hidden_state=decoder_outputs.last_hidden_state,
past_key_values=decoder_outputs.past_key_values,
hidden_states=decoder_outputs.hidden_states,
attentions=decoder_outputs.attentions,
)
class OPTForCausalLM(OPTPreTrainedModel):
def __init__(self, config, weights):
super().__init__(config)
self.model = OPTModel(config, weights)
self.lm_head = TensorParallelHead.load(
config, prefix="model.decoder.embed_tokens", weights=weights
)
def forward(
self,
input_ids: torch.LongTensor = None,
attention_mask: Optional[torch.Tensor] = None,
head_mask: Optional[torch.Tensor] = None,
past_key_values: Optional[List[torch.FloatTensor]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple, CausalLMOutputWithPast]:
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
# decoder outputs consists of (dec_features, layer_state, dec_hidden, dec_attn)
outputs = self.model.decoder(
input_ids=input_ids,
attention_mask=attention_mask,
head_mask=head_mask,
past_key_values=past_key_values,
inputs_embeds=inputs_embeds,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
logits = self.lm_head(outputs[0]).contiguous()
loss = None
return CausalLMOutputWithPast(
loss=loss,
logits=logits,
past_key_values=outputs.past_key_values,
hidden_states=outputs.hidden_states,
attentions=outputs.attentions,
)
def prepare_inputs_for_generation(
self,
input_ids,
past_key_values=None,
attention_mask=None,
inputs_embeds=None,
**kwargs,
):
if past_key_values:
input_ids = input_ids[:, -1:]
# if `inputs_embeds` are passed, we only want to use them in the 1st generation step
if inputs_embeds is not None and past_key_values is None:
model_inputs = {"inputs_embeds": inputs_embeds}
else:
model_inputs = {"input_ids": input_ids}
model_inputs.update(
{
"past_key_values": past_key_values,
"use_cache": kwargs.get("use_cache"),
"attention_mask": attention_mask,
}
)
return model_inputs
@staticmethod
def _reorder_cache(past_key_values, beam_idx):
reordered_past = ()
for layer_past in past_key_values:
reordered_past += (
tuple(
past_state.index_select(0, beam_idx) for past_state in layer_past
),
)
return reordered_past
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/models | hf_public_repos/text-generation-inference/server/text_generation_server/models/custom_modeling/t5_modeling.py | # coding=utf-8
# Copyright 2018 Mesh TensorFlow authors, T5 Authors and HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" PyTorch T5 model."""
import copy
import math
import warnings
from typing import Optional, Tuple, Union
from loguru import logger
import torch
import torch.distributed
from torch import nn
from torch.nn import CrossEntropyLoss
from transformers.activations import ACT2FN
from transformers.modeling_outputs import (
BaseModelOutput,
BaseModelOutputWithPastAndCrossAttentions,
Seq2SeqLMOutput,
)
from transformers.modeling_utils import PreTrainedModel
from transformers.pytorch_utils import ALL_LAYERNORM_LAYERS
from transformers.utils import (
is_torch_fx_proxy,
)
from transformers import T5Config
from text_generation_server.utils.layers import (
TensorParallelColumnLinear,
TensorParallelEmbedding,
TensorParallelRowLinear,
TensorParallelHead,
)
class PartialTPEmbedding(nn.Module):
def __init__(self, prefix: str, weights):
super().__init__()
weight = weights.get_sharded(f"{prefix}.weight", dim=1)
self.weight = nn.Parameter(weight)
def forward(self, input: torch.Tensor) -> torch.Tensor:
return torch.nn.functional.embedding(input, self.weight)
@torch.jit.script
def layer_norm(hidden_states, weight, epsilon):
# T5 uses a layer_norm which only scales and doesn't shift, which is also known as Root Mean
# Square Layer Normalization https://arxiv.org/abs/1910.07467 thus varience is calculated
# w/o mean and there is no bias. Additionally we want to make sure that the accumulation for
# half-precision inputs is done in fp32
variance = hidden_states.to(torch.float32).pow(2).mean(-1, keepdim=True)
hidden_states = hidden_states * torch.rsqrt(variance + epsilon)
# convert into half-precision if necessary
if weight.dtype in [torch.float16, torch.bfloat16]:
hidden_states = hidden_states.to(weight.dtype)
return weight * hidden_states
class T5LayerNorm(nn.Module):
def __init__(self, prefix, weights, eps=1e-6):
"""
Construct a layernorm module in the T5 style. No bias and no subtraction of mean.
"""
super().__init__()
weight = weights.get_tensor(f"{prefix}.weight")
self.weight = nn.Parameter(weight)
self.variance_epsilon = torch.tensor(eps)
def forward(self, hidden_states):
return layer_norm(hidden_states, self.weight, self.variance_epsilon)
try:
from apex.normalization import FusedRMSNorm
T5LayerNorm = FusedRMSNorm # noqa
logger.info(
"Discovered apex.normalization.FusedRMSNorm - will use it instead of T5LayerNorm"
)
except ImportError:
# using the normal T5LayerNorm
pass
except Exception:
logger.warning("discovered apex but it failed to load, falling back to T5LayerNorm")
pass
ALL_LAYERNORM_LAYERS.append(T5LayerNorm)
class T5DenseActDense(nn.Module):
def __init__(self, config: T5Config, prefix, weights):
super().__init__()
self.wi = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.wi", weights=weights, bias=False
)
### XXX: T5 models do not handle well both f16 and quantization.
### Overidding specifically this layer for that reason.
### https://github.com/huggingface/transformers/blob/main/src/transformers/models/t5/modeling_t5.py#L316
### https://github.com/huggingface/transformers/issues/20287
_q = config.quantize
_dtype = weights.dtype
weights.dtype = torch.float32
config.quantize = None
self.wo_cast = (torch.float32, _dtype)
self.wo = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.wo", weights=weights, bias=False
)
weights.dtype = _dtype
config.quantize = _q
self.dropout = nn.Dropout(config.dropout_rate)
self.act = (
ACT2FN[config.dense_act_fn]
if "gelu" not in config.dense_act_fn
else lambda x: torch.nn.functional.gelu(x, approximate="tanh")
)
def forward(self, hidden_states):
hidden_states = self.wi(hidden_states)
hidden_states = self.act(hidden_states)
hidden_states = self.dropout(hidden_states)
hidden_states = hidden_states.to(dtype=self.wo_cast[0])
hidden_states = self.wo(hidden_states)
# XXX: Recasting is already done within the layer norm.
# Casting back to float16 here modifies results
# hidden_states = hidden_states.to(dtype=self.wo_cast[1])
return hidden_states
class T5DenseGatedActDense(nn.Module):
def __init__(self, config: T5Config, prefix, weights):
super().__init__()
self.wi_0 = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.wi_0", weights=weights, bias=False
)
self.wi_1 = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.wi_1", weights=weights, bias=False
)
### XXX: T5 models do not handle well both f16 and quantization.
### Overidding specifically this layer for that reason.
### https://github.com/huggingface/transformers/blob/main/src/transformers/models/t5/modeling_t5.py#L316
### https://github.com/huggingface/transformers/issues/20287
_q = config.quantize
_dtype = weights.dtype
weights.dtype = torch.float32
config.quantize = None
self.wo_cast = (torch.float32, _dtype)
self.wo = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.wo", weights=weights, bias=False
)
weights.dtype = _dtype
config.quantize = _q
self.dropout = nn.Dropout(config.dropout_rate)
self.act = (
ACT2FN[config.dense_act_fn]
if "gelu" not in config.dense_act_fn
else lambda x: torch.nn.functional.gelu(x, approximate="tanh")
)
def forward(self, hidden_states):
hidden_gelu = self.act(self.wi_0(hidden_states))
hidden_linear = self.wi_1(hidden_states)
hidden_states = hidden_gelu * hidden_linear
hidden_states = self.dropout(hidden_states)
hidden_states = hidden_states.to(dtype=self.wo_cast[0])
hidden_states = self.wo(hidden_states)
# XXX: Recasting is already done within the layer norm.
# Casting back to float16 here modifies results
# hidden_states = hidden_states.to(dtype=self.wo_cast[1])
return hidden_states
class T5LayerFF(nn.Module):
def __init__(self, config: T5Config, prefix, weights):
super().__init__()
if config.is_gated_act:
self.DenseReluDense = T5DenseGatedActDense(
config, prefix=f"{prefix}.DenseReluDense", weights=weights
)
else:
self.DenseReluDense = T5DenseActDense(
config, prefix=f"{prefix}.DenseReluDense", weights=weights
)
self.layer_norm = T5LayerNorm(
prefix=f"{prefix}.layer_norm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.dropout = nn.Dropout(config.dropout_rate)
def forward(self, hidden_states):
forwarded_states = self.layer_norm(hidden_states)
forwarded_states = self.DenseReluDense(forwarded_states)
hidden_states = hidden_states + self.dropout(forwarded_states)
return hidden_states
class T5Attention(nn.Module):
def __init__(
self, config: T5Config, prefix, weights, has_relative_attention_bias=False
):
super().__init__()
self.is_decoder = config.is_decoder
self.has_relative_attention_bias = has_relative_attention_bias
self.relative_attention_num_buckets = config.relative_attention_num_buckets
self.relative_attention_max_distance = config.relative_attention_max_distance
self.d_model = config.d_model
self.key_value_proj_dim = config.d_kv
self.n_heads = config.num_heads
self.dropout = config.dropout_rate
self.inner_dim = self.n_heads * self.key_value_proj_dim
process_group = weights.process_group
# Mesh TensorFlow initialization to avoid scaling before softmax
assert self.n_heads % process_group.size() == 0
self.q = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.q", weights=weights, bias=False
)
self.k = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.k", weights=weights, bias=False
)
self.v = TensorParallelColumnLinear.load(
config, prefix=f"{prefix}.v", weights=weights, bias=False
)
self.o = TensorParallelRowLinear.load(
config, prefix=f"{prefix}.o", weights=weights, bias=False
)
if self.n_heads % weights.process_group.size() != 0:
raise ValueError(
f"`n_heads` must be divisible by `num_shards` (got `n_heads`: {self.n_heads} "
f"and `num_shards`: {weights.process_group.size()}"
)
self.n_heads = self.n_heads // process_group.size()
self.inner_dim = self.inner_dim // process_group.size()
if self.has_relative_attention_bias:
self.relative_attention_bias = PartialTPEmbedding(
prefix=f"{prefix}.relative_attention_bias", weights=weights
)
@staticmethod
def _relative_position_bucket(
relative_position, bidirectional=True, num_buckets=32, max_distance=128
):
"""
Adapted from Mesh Tensorflow:
https://github.com/tensorflow/mesh/blob/0cb87fe07da627bf0b7e60475d59f95ed6b5be3d/mesh_tensorflow/transformer/transformer_layers.py#L593
Translate relative position to a bucket number for relative attention. The relative position is defined as
memory_position - query_position, i.e. the distance in tokens from the attending position to the attended-to
position. If bidirectional=False, then positive relative positions are invalid. We use smaller buckets for
small absolute relative_position and larger buckets for larger absolute relative_positions. All relative
positions >=max_distance map to the same bucket. All relative positions <=-max_distance map to the same bucket.
This should allow for more graceful generalization to longer sequences than the model has been trained on
Args:
relative_position: an int32 Tensor
bidirectional: a boolean - whether the attention is bidirectional
num_buckets: an integer
max_distance: an integer
Returns:
a Tensor with the same shape as relative_position, containing int32 values in the range [0, num_buckets)
"""
relative_buckets = 0
if bidirectional:
num_buckets //= 2
relative_buckets += (relative_position > 0).to(torch.long) * num_buckets
relative_position = torch.abs(relative_position)
else:
relative_position = -torch.min(
relative_position, torch.zeros_like(relative_position)
)
# now relative_position is in the range [0, inf)
# half of the buckets are for exact increments in positions
max_exact = num_buckets // 2
is_small = relative_position < max_exact
# The other half of the buckets are for logarithmically bigger bins in positions up to max_distance
relative_position_if_large = max_exact + (
torch.log(relative_position.float() / max_exact)
/ math.log(max_distance / max_exact)
* (num_buckets - max_exact)
).to(torch.long)
relative_position_if_large = torch.min(
relative_position_if_large,
torch.full_like(relative_position_if_large, num_buckets - 1),
)
relative_buckets += torch.where(
is_small, relative_position, relative_position_if_large
)
return relative_buckets
def compute_bias(self, query_length, key_length, device=None):
"""Compute binned relative position bias"""
if device is None:
device = self.relative_attention_bias.weight.device
context_position = torch.arange(query_length, dtype=torch.long, device=device)[
:, None
]
memory_position = torch.arange(key_length, dtype=torch.long, device=device)[
None, :
]
relative_position = (
memory_position - context_position
) # shape (query_length, key_length)
relative_position_bucket = self._relative_position_bucket(
relative_position, # shape (query_length, key_length)
bidirectional=(not self.is_decoder),
num_buckets=self.relative_attention_num_buckets,
max_distance=self.relative_attention_max_distance,
)
values = self.relative_attention_bias(
relative_position_bucket
) # shape (query_length, key_length, num_heads)
values = values.permute([2, 0, 1]).unsqueeze(
0
) # shape (1, num_heads, query_length, key_length)
return values
def forward(
self,
hidden_states,
mask=None,
key_value_states=None,
position_bias=None,
past_key_value=None,
layer_head_mask=None,
query_length=None,
use_cache=False,
output_attentions=False,
):
"""
Self-attention (if key_value_states is None) or attention over source sentence (provided by key_value_states).
"""
# Input is (batch_size, seq_length, dim)
# Mask is (batch_size, key_length) (non-causal) or (batch_size, key_length, key_length)
# past_key_value[0] is (batch_size, n_heads, q_len - 1, dim_per_head)
batch_size, seq_length = hidden_states.shape[:2]
real_seq_length = seq_length
if past_key_value is not None:
assert (
len(past_key_value) == 2
), f"past_key_value should have 2 past states: keys and values. Got {len(past_key_value)} past states"
real_seq_length += (
past_key_value[0].shape[2] if query_length is None else query_length
)
key_length = (
real_seq_length if key_value_states is None else key_value_states.shape[1]
)
def shape(states):
"""projection"""
return states.view(
batch_size, -1, self.n_heads, self.key_value_proj_dim
).transpose(1, 2)
def unshape(states):
"""reshape"""
return (
states.transpose(1, 2).contiguous().view(batch_size, -1, self.inner_dim)
)
def project(hidden_states, proj_layer, key_value_states, past_key_value):
"""projects hidden states correctly to key/query states"""
if key_value_states is None:
# self-attn
# (batch_size, n_heads, seq_length, dim_per_head)
hidden_states = shape(proj_layer(hidden_states))
elif past_key_value is None:
# cross-attn
# (batch_size, n_heads, seq_length, dim_per_head)
hidden_states = shape(proj_layer(key_value_states))
if past_key_value is not None:
if key_value_states is None:
# self-attn
# (batch_size, n_heads, key_length, dim_per_head)
hidden_states = torch.cat([past_key_value, hidden_states], dim=2)
elif past_key_value.shape[2] != key_value_states.shape[1]:
# checking that the `sequence_length` of the `past_key_value` is the same as
# the provided `key_value_states` to support prefix tuning
# cross-attn
# (batch_size, n_heads, seq_length, dim_per_head)
hidden_states = shape(proj_layer(key_value_states))
else:
# cross-attn
hidden_states = past_key_value
return hidden_states
# get query states
query_states = shape(
self.q(hidden_states)
) # (batch_size, n_heads, seq_length, dim_per_head)
# get key/value states
key_states = project(
hidden_states,
self.k,
key_value_states,
past_key_value[0] if past_key_value is not None else None,
)
value_states = project(
hidden_states,
self.v,
key_value_states,
past_key_value[1] if past_key_value is not None else None,
)
# compute scores
scores = torch.matmul(
query_states, key_states.transpose(3, 2)
) # equivalent of torch.einsum("bnqd,bnkd->bnqk", query_states, key_states), compatible with onnx op>9
if position_bias is None:
if not self.has_relative_attention_bias:
position_bias = torch.zeros(
(1, self.n_heads, real_seq_length, key_length),
device=scores.device,
dtype=scores.dtype,
)
else:
position_bias = self.compute_bias(
real_seq_length, key_length, device=scores.device
)
# if key and values are already calculated
# we want only the last query position bias
if past_key_value is not None:
position_bias = position_bias[:, :, -hidden_states.size(1) :, :]
if mask is not None:
position_bias = (
position_bias + mask
) # (batch_size, n_heads, seq_length, key_length)
position_bias_masked = position_bias
scores += position_bias_masked
attn_weights = nn.functional.softmax(scores.float(), dim=-1).type_as(
scores
) # (batch_size, n_heads, seq_length, key_length)
attn_weights = nn.functional.dropout(
attn_weights, p=self.dropout, training=self.training
) # (batch_size, n_heads, seq_length, key_length)
# Mask heads if we want to
if layer_head_mask is not None:
attn_weights = attn_weights * layer_head_mask
attn_output = unshape(
torch.matmul(attn_weights, value_states)
) # (batch_size, seq_length, dim)
attn_output = self.o(attn_output)
present_key_value_state = (
(key_states, value_states) if (self.is_decoder and use_cache) else None
)
outputs = (attn_output,) + (present_key_value_state,) + (position_bias,)
if output_attentions:
outputs = outputs + (attn_weights,)
return outputs
class T5LayerSelfAttention(nn.Module):
def __init__(self, config, prefix, weights, has_relative_attention_bias=False):
super().__init__()
self.SelfAttention = T5Attention(
config,
prefix=f"{prefix}.SelfAttention",
weights=weights,
has_relative_attention_bias=has_relative_attention_bias,
)
self.layer_norm = T5LayerNorm(
prefix=f"{prefix}.layer_norm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.dropout = nn.Dropout(config.dropout_rate)
def forward(
self,
hidden_states,
attention_mask=None,
position_bias=None,
layer_head_mask=None,
past_key_value=None,
use_cache=False,
output_attentions=False,
):
normed_hidden_states = self.layer_norm(hidden_states)
attention_output = self.SelfAttention(
normed_hidden_states,
mask=attention_mask,
position_bias=position_bias,
layer_head_mask=layer_head_mask,
past_key_value=past_key_value,
use_cache=use_cache,
output_attentions=output_attentions,
)
hidden_states = hidden_states + self.dropout(attention_output[0])
outputs = (hidden_states,) + attention_output[
1:
] # add attentions if we output them
return outputs
class T5LayerCrossAttention(nn.Module):
def __init__(self, config, prefix, weights):
super().__init__()
self.EncDecAttention = T5Attention(
config,
prefix=f"{prefix}.EncDecAttention",
weights=weights,
has_relative_attention_bias=False,
)
self.layer_norm = T5LayerNorm(
prefix=f"{prefix}.layer_norm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.dropout = nn.Dropout(config.dropout_rate)
def forward(
self,
hidden_states,
key_value_states,
attention_mask=None,
position_bias=None,
layer_head_mask=None,
past_key_value=None,
use_cache=False,
query_length=None,
output_attentions=False,
):
normed_hidden_states = self.layer_norm(hidden_states)
attention_output = self.EncDecAttention(
normed_hidden_states,
mask=attention_mask,
key_value_states=key_value_states,
position_bias=position_bias,
layer_head_mask=layer_head_mask,
past_key_value=past_key_value,
use_cache=use_cache,
query_length=query_length,
output_attentions=output_attentions,
)
layer_output = hidden_states + self.dropout(attention_output[0])
outputs = (layer_output,) + attention_output[
1:
] # add attentions if we output them
return outputs
class T5Block(nn.Module):
def __init__(self, config, prefix, weights, has_relative_attention_bias: bool):
super().__init__()
self.is_decoder = config.is_decoder
self.layer = nn.ModuleList()
self.layer.append(
T5LayerSelfAttention(
config,
prefix=f"{prefix}.layer.0",
weights=weights,
has_relative_attention_bias=has_relative_attention_bias,
)
)
if self.is_decoder:
i = 2
self.layer.append(
T5LayerCrossAttention(
config, prefix=f"{prefix}.layer.1", weights=weights
)
)
else:
i = 1
self.layer.append(
T5LayerFF(config, prefix=f"{prefix}.layer.{i}", weights=weights)
)
def forward(
self,
hidden_states,
attention_mask=None,
position_bias=None,
encoder_hidden_states=None,
encoder_attention_mask=None,
encoder_decoder_position_bias=None,
layer_head_mask=None,
cross_attn_layer_head_mask=None,
past_key_value=None,
use_cache=False,
output_attentions=False,
return_dict=True,
):
if past_key_value is not None:
if not self.is_decoder:
logger.warning(
"`past_key_values` is passed to the encoder. Please make sure this is intended."
)
expected_num_past_key_values = 2 if encoder_hidden_states is None else 4
if len(past_key_value) != expected_num_past_key_values:
raise ValueError(
f"There should be {expected_num_past_key_values} past states. "
f"{'2 (past / key) for cross attention. ' if expected_num_past_key_values == 4 else ''}"
f"Got {len(past_key_value)} past key / value states"
)
self_attn_past_key_value = past_key_value[:2]
cross_attn_past_key_value = past_key_value[2:]
else:
self_attn_past_key_value, cross_attn_past_key_value = None, None
self_attention_outputs = self.layer[0](
hidden_states,
attention_mask=attention_mask,
position_bias=position_bias,
layer_head_mask=layer_head_mask,
past_key_value=self_attn_past_key_value,
use_cache=use_cache,
output_attentions=output_attentions,
)
hidden_states, present_key_value_state = self_attention_outputs[:2]
attention_outputs = self_attention_outputs[
2:
] # Keep self-attention outputs and relative position weights
# clamp inf values to enable fp16 training
if hidden_states.dtype == torch.float16:
clamp_value = torch.where(
torch.isinf(hidden_states).any(),
torch.finfo(hidden_states.dtype).max - 1000,
torch.finfo(hidden_states.dtype).max,
)
hidden_states = torch.clamp(
hidden_states, min=-clamp_value, max=clamp_value
)
do_cross_attention = self.is_decoder and encoder_hidden_states is not None
if do_cross_attention:
# the actual query length is unknown for cross attention
# if using past key value states. Need to inject it here
if present_key_value_state is not None:
query_length = present_key_value_state[0].shape[2]
else:
query_length = None
cross_attention_outputs = self.layer[1](
hidden_states,
key_value_states=encoder_hidden_states,
attention_mask=encoder_attention_mask,
position_bias=encoder_decoder_position_bias,
layer_head_mask=cross_attn_layer_head_mask,
past_key_value=cross_attn_past_key_value,
query_length=query_length,
use_cache=use_cache,
output_attentions=output_attentions,
)
hidden_states = cross_attention_outputs[0]
# clamp inf values to enable fp16 training
if hidden_states.dtype == torch.float16:
clamp_value = torch.where(
torch.isinf(hidden_states).any(),
torch.finfo(hidden_states.dtype).max - 1000,
torch.finfo(hidden_states.dtype).max,
)
hidden_states = torch.clamp(
hidden_states, min=-clamp_value, max=clamp_value
)
# Combine self attn and cross attn key value states
if present_key_value_state is not None:
present_key_value_state = (
present_key_value_state + cross_attention_outputs[1]
)
# Keep cross-attention outputs and relative position weights
attention_outputs = attention_outputs + cross_attention_outputs[2:]
# Apply Feed Forward layer
hidden_states = self.layer[-1](hidden_states)
# clamp inf values to enable fp16 training
if hidden_states.dtype == torch.float16:
clamp_value = torch.where(
torch.isinf(hidden_states).any(),
torch.finfo(hidden_states.dtype).max - 1000,
torch.finfo(hidden_states.dtype).max,
)
hidden_states = torch.clamp(
hidden_states, min=-clamp_value, max=clamp_value
)
outputs = (hidden_states,)
if use_cache:
outputs = outputs + (present_key_value_state,) + attention_outputs
else:
outputs = outputs + attention_outputs
return outputs # hidden-states, present_key_value_states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights)
class T5PreTrainedModel(PreTrainedModel):
"""
An abstract class to handle weights initialization and a simple interface for downloading and loading pretrained
models.
"""
config_class = T5Config
def _shift_right(self, input_ids):
decoder_start_token_id = self.config.decoder_start_token_id
pad_token_id = self.config.pad_token_id
assert decoder_start_token_id is not None, (
"self.model.config.decoder_start_token_id has to be defined. In T5 it is usually set to the pad_token_id."
" See T5 docs for more information"
)
# shift inputs to the right
if is_torch_fx_proxy(input_ids):
# Item assignment is not supported natively for proxies.
shifted_input_ids = torch.full(
input_ids.shape[:-1] + (1,), decoder_start_token_id
)
shifted_input_ids = torch.cat(
[shifted_input_ids, input_ids[..., :-1]], dim=-1
)
else:
shifted_input_ids = input_ids.new_zeros(input_ids.shape)
shifted_input_ids[..., 1:] = input_ids[..., :-1].clone()
shifted_input_ids[..., 0] = decoder_start_token_id
assert (
pad_token_id is not None
), "self.model.config.pad_token_id has to be defined."
# replace possible -100 values in labels by `pad_token_id`
shifted_input_ids.masked_fill_(shifted_input_ids == -100, pad_token_id)
return shifted_input_ids
class T5Stack(T5PreTrainedModel):
def __init__(self, config, prefix, weights, embed_tokens):
super().__init__(config)
self.is_decoder = config.is_decoder
self.embed_tokens = embed_tokens
self.block = nn.ModuleList(
[
T5Block(
config,
prefix=f"{prefix}.block.{layer_id}",
weights=weights,
has_relative_attention_bias=(layer_id == 0),
)
for layer_id in range(config.num_layers)
]
)
self.final_layer_norm = T5LayerNorm(
prefix=f"{prefix}.final_layer_norm",
weights=weights,
eps=config.layer_norm_epsilon,
)
self.dropout = nn.Dropout(config.dropout_rate)
def forward(
self,
input_ids=None,
attention_mask=None,
encoder_hidden_states=None,
encoder_attention_mask=None,
inputs_embeds=None,
head_mask=None,
cross_attn_head_mask=None,
past_key_values=None,
use_cache=None,
output_attentions=None,
output_hidden_states=None,
return_dict=None,
):
# Model parallel
use_cache = use_cache if use_cache is not None else self.config.use_cache
output_attentions = (
output_attentions
if output_attentions is not None
else self.config.output_attentions
)
output_hidden_states = (
output_hidden_states
if output_hidden_states is not None
else self.config.output_hidden_states
)
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
if input_ids is not None and inputs_embeds is not None:
err_msg_prefix = "decoder_" if self.is_decoder else ""
raise ValueError(
f"You cannot specify both {err_msg_prefix}input_ids and {err_msg_prefix}inputs_embeds at the same time"
)
elif input_ids is not None:
input_shape = input_ids.size()
input_ids = input_ids.view(-1, input_shape[-1])
elif inputs_embeds is not None:
input_shape = inputs_embeds.size()[:-1]
else:
err_msg_prefix = "decoder_" if self.is_decoder else ""
raise ValueError(
f"You have to specify either {err_msg_prefix}input_ids or {err_msg_prefix}inputs_embeds"
)
if inputs_embeds is None:
assert (
self.embed_tokens is not None
), "You have to initialize the model with valid token embeddings"
inputs_embeds = self.embed_tokens(input_ids)
batch_size, seq_length = input_shape
# required mask seq length can be calculated via length of past
mask_seq_length = (
past_key_values[0][0].shape[2] + seq_length
if past_key_values is not None
else seq_length
)
if use_cache is True:
assert (
self.is_decoder
), f"`use_cache` can only be set to `True` if {self} is used as a decoder"
if attention_mask is None:
attention_mask = torch.ones(
batch_size, mask_seq_length, device=inputs_embeds.device
)
if (
self.is_decoder
and encoder_attention_mask is None
and encoder_hidden_states is not None
):
encoder_seq_length = encoder_hidden_states.shape[1]
encoder_attention_mask = torch.ones(
batch_size,
encoder_seq_length,
device=inputs_embeds.device,
dtype=torch.long,
)
# initialize past_key_values with `None` if past does not exist
if past_key_values is None:
past_key_values = [None] * len(self.block)
# We can provide a self-attention mask of dimensions [batch_size, from_seq_length, to_seq_length]
# ourselves in which case we just need to make it broadcastable to all heads.
extended_attention_mask = self.get_extended_attention_mask(
attention_mask, input_shape
)
# If a 2D or 3D attention mask is provided for the cross-attention
# we need to make broadcastable to [batch_size, num_heads, seq_length, seq_length]
if self.is_decoder and encoder_hidden_states is not None:
(
encoder_batch_size,
encoder_sequence_length,
_,
) = encoder_hidden_states.size()
encoder_hidden_shape = (encoder_batch_size, encoder_sequence_length)
if encoder_attention_mask is None:
encoder_attention_mask = torch.ones(
encoder_hidden_shape, device=inputs_embeds.device
)
encoder_extended_attention_mask = self.invert_attention_mask(
encoder_attention_mask
)
else:
encoder_extended_attention_mask = None
# Prepare head mask if needed
head_mask = self.get_head_mask(head_mask, self.config.num_layers)
cross_attn_head_mask = self.get_head_mask(
cross_attn_head_mask, self.config.num_layers
)
present_key_value_states = () if use_cache else None
all_hidden_states = () if output_hidden_states else None
all_attentions = () if output_attentions else None
all_cross_attentions = () if (output_attentions and self.is_decoder) else None
position_bias = None
encoder_decoder_position_bias = None
hidden_states = self.dropout(inputs_embeds)
for i, (layer_module, past_key_value) in enumerate(
zip(self.block, past_key_values)
):
layer_head_mask = head_mask[i]
cross_attn_layer_head_mask = cross_attn_head_mask[i]
# Model parallel
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
layer_outputs = layer_module(
hidden_states,
attention_mask=extended_attention_mask,
position_bias=position_bias,
encoder_hidden_states=encoder_hidden_states,
encoder_attention_mask=encoder_extended_attention_mask,
encoder_decoder_position_bias=encoder_decoder_position_bias,
layer_head_mask=layer_head_mask,
cross_attn_layer_head_mask=cross_attn_layer_head_mask,
past_key_value=past_key_value,
use_cache=use_cache,
output_attentions=output_attentions,
)
# layer_outputs is a tuple with:
# hidden-states, key-value-states, (self-attention position bias), (self-attention weights), (cross-attention position bias), (cross-attention weights)
if use_cache is False:
layer_outputs = layer_outputs[:1] + (None,) + layer_outputs[1:]
hidden_states, present_key_value_state = layer_outputs[:2]
# We share the position biases between the layers - the first layer store them
# layer_outputs = hidden-states, key-value-states (self-attention position bias), (self-attention weights),
# (cross-attention position bias), (cross-attention weights)
position_bias = layer_outputs[2]
if self.is_decoder and encoder_hidden_states is not None:
encoder_decoder_position_bias = layer_outputs[
4 if output_attentions else 3
]
# append next layer key value states
if use_cache:
present_key_value_states = present_key_value_states + (
present_key_value_state,
)
if output_attentions:
all_attentions = all_attentions + (layer_outputs[3],)
if self.is_decoder:
all_cross_attentions = all_cross_attentions + (layer_outputs[5],)
hidden_states = self.final_layer_norm(hidden_states)
hidden_states = self.dropout(hidden_states)
# Add last layer
if output_hidden_states:
all_hidden_states = all_hidden_states + (hidden_states,)
if not return_dict:
return tuple(
v
for v in [
hidden_states,
present_key_value_states,
all_hidden_states,
all_attentions,
all_cross_attentions,
]
if v is not None
)
return BaseModelOutputWithPastAndCrossAttentions(
last_hidden_state=hidden_states,
past_key_values=present_key_value_states,
hidden_states=all_hidden_states,
attentions=all_attentions,
cross_attentions=all_cross_attentions,
)
class T5ForConditionalGeneration(T5PreTrainedModel):
def __init__(self, config: T5Config, weights):
super().__init__(config)
self.model_dim = config.d_model
self.shared = TensorParallelEmbedding(prefix="shared", weights=weights)
encoder_config = copy.deepcopy(config)
encoder_config.is_decoder = False
encoder_config.use_cache = False
encoder_config.is_encoder_decoder = False
self.encoder = T5Stack(
config=encoder_config,
prefix="encoder",
weights=weights,
embed_tokens=self.shared,
)
decoder_config = copy.deepcopy(config)
decoder_config.is_decoder = True
decoder_config.is_encoder_decoder = False
decoder_config.num_layers = config.num_decoder_layers
self.decoder = T5Stack(
config=decoder_config,
prefix="decoder",
weights=weights,
embed_tokens=self.shared,
)
self.lm_head = TensorParallelHead.load(
config, prefix="lm_head", weights=weights
)
def forward(
self,
input_ids: Optional[torch.LongTensor] = None,
attention_mask: Optional[torch.FloatTensor] = None,
decoder_input_ids: Optional[torch.LongTensor] = None,
decoder_attention_mask: Optional[torch.BoolTensor] = None,
head_mask: Optional[torch.FloatTensor] = None,
decoder_head_mask: Optional[torch.FloatTensor] = None,
cross_attn_head_mask: Optional[torch.Tensor] = None,
encoder_outputs: Optional[Tuple[Tuple[torch.Tensor]]] = None,
past_key_values: Optional[Tuple[Tuple[torch.Tensor]]] = None,
inputs_embeds: Optional[torch.FloatTensor] = None,
decoder_inputs_embeds: Optional[torch.FloatTensor] = None,
labels: Optional[torch.LongTensor] = None,
use_cache: Optional[bool] = None,
output_attentions: Optional[bool] = None,
output_hidden_states: Optional[bool] = None,
return_dict: Optional[bool] = None,
) -> Union[Tuple[torch.FloatTensor], Seq2SeqLMOutput]:
use_cache = use_cache if use_cache is not None else self.config.use_cache
return_dict = (
return_dict if return_dict is not None else self.config.use_return_dict
)
# FutureWarning: head_mask was separated into two input args - head_mask, decoder_head_mask
if head_mask is not None and decoder_head_mask is None:
if self.config.num_layers == self.config.num_decoder_layers:
warnings.warn(__HEAD_MASK_WARNING_MSG, FutureWarning)
decoder_head_mask = head_mask
# Encode if needed (training, first prediction pass)
if encoder_outputs is None:
# Convert encoder inputs in embeddings if needed
encoder_outputs = self.encoder(
input_ids=input_ids,
attention_mask=attention_mask,
inputs_embeds=inputs_embeds,
head_mask=head_mask,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
elif return_dict and not isinstance(encoder_outputs, BaseModelOutput):
encoder_outputs = BaseModelOutput(
last_hidden_state=encoder_outputs[0],
hidden_states=encoder_outputs[1] if len(encoder_outputs) > 1 else None,
attentions=encoder_outputs[2] if len(encoder_outputs) > 2 else None,
)
hidden_states = encoder_outputs[0]
if (
labels is not None
and decoder_input_ids is None
and decoder_inputs_embeds is None
):
# get decoder inputs from shifting lm labels to the right
decoder_input_ids = self._shift_right(labels)
# Decode
decoder_outputs = self.decoder(
input_ids=decoder_input_ids,
attention_mask=decoder_attention_mask,
inputs_embeds=decoder_inputs_embeds,
past_key_values=past_key_values,
encoder_hidden_states=hidden_states,
encoder_attention_mask=attention_mask,
head_mask=decoder_head_mask,
cross_attn_head_mask=cross_attn_head_mask,
use_cache=use_cache,
output_attentions=output_attentions,
output_hidden_states=output_hidden_states,
return_dict=return_dict,
)
sequence_output = decoder_outputs[0]
if self.config.tie_word_embeddings:
# Rescale output before projecting on vocab
# See https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/transformer/transformer.py#L586
sequence_output = sequence_output * (self.model_dim**-0.5)
lm_logits = self.lm_head(sequence_output)
loss = None
if labels is not None:
loss_fct = CrossEntropyLoss(ignore_index=-100)
# move labels to correct device to enable PP
labels = labels.to(lm_logits.device)
loss = loss_fct(lm_logits.view(-1, lm_logits.size(-1)), labels.view(-1))
# TODO(thom): Add z_loss https://github.com/tensorflow/mesh/blob/fa19d69eafc9a482aff0b59ddd96b025c0cb207d/mesh_tensorflow/layers.py#L666
if not return_dict:
output = (lm_logits,) + decoder_outputs[1:] + encoder_outputs
return ((loss,) + output) if loss is not None else output
return Seq2SeqLMOutput(
loss=loss,
logits=lm_logits,
past_key_values=decoder_outputs.past_key_values,
decoder_hidden_states=decoder_outputs.hidden_states,
decoder_attentions=decoder_outputs.attentions,
cross_attentions=decoder_outputs.cross_attentions,
encoder_last_hidden_state=encoder_outputs.last_hidden_state,
encoder_hidden_states=encoder_outputs.hidden_states,
encoder_attentions=encoder_outputs.attentions,
)
def prepare_inputs_for_generation(
self,
input_ids,
past_key_values=None,
attention_mask=None,
head_mask=None,
decoder_head_mask=None,
decoder_attention_mask=None,
cross_attn_head_mask=None,
use_cache=None,
encoder_outputs=None,
**kwargs,
):
# cut decoder_input_ids if past is used
if past_key_values is not None:
input_ids = input_ids[:, -1:]
return {
"decoder_input_ids": input_ids,
"past_key_values": past_key_values,
"encoder_outputs": encoder_outputs,
"attention_mask": attention_mask,
"head_mask": head_mask,
"decoder_head_mask": decoder_head_mask,
"decoder_attention_mask": decoder_attention_mask,
"cross_attn_head_mask": cross_attn_head_mask,
"use_cache": use_cache,
}
def prepare_decoder_input_ids_from_labels(self, labels: torch.Tensor):
return self._shift_right(labels)
def _reorder_cache(self, past_key_values, beam_idx):
# if decoder past is not included in output
# speedy decoding is disabled and no need to reorder
if past_key_values is None:
logger.warning(
"You might want to consider setting `use_cache=True` to speed up decoding"
)
return past_key_values
reordered_decoder_past = ()
for layer_past_states in past_key_values:
# get the correct batch idx from layer past batch dim
# batch dim of `past` is at 2nd position
reordered_layer_past_states = ()
for layer_past_state in layer_past_states:
# need to set correct `past` for each of the four key / value states
reordered_layer_past_states = reordered_layer_past_states + (
layer_past_state.index_select(
0, beam_idx.to(layer_past_state.device)
),
)
assert reordered_layer_past_states[0].shape == layer_past_states[0].shape
assert len(reordered_layer_past_states) == len(layer_past_states)
reordered_decoder_past = reordered_decoder_past + (
reordered_layer_past_states,
)
return reordered_decoder_past
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/__init__.py | from text_generation_server.utils.convert import convert_file, convert_files
from text_generation_server.utils.dist import initialize_torch_distributed
from text_generation_server.utils.weights import Weights
from text_generation_server.utils.peft import download_and_unload_peft
from text_generation_server.utils.hub import (
weight_files,
weight_hub_files,
download_weights,
EntryNotFoundError,
LocalEntryNotFoundError,
RevisionNotFoundError,
)
from text_generation_server.utils.tokens import (
NextTokenChooser,
HeterogeneousNextTokenChooser,
StoppingCriteria,
StopSequenceCriteria,
FinishReason,
Sampling,
Greedy,
)
__all__ = [
"convert_file",
"convert_files",
"initialize_torch_distributed",
"weight_files",
"weight_hub_files",
"download_weights",
"download_and_unload_peft",
"EntryNotFoundError",
"HeterogeneousNextTokenChooser",
"LocalEntryNotFoundError",
"RevisionNotFoundError",
"Greedy",
"NextTokenChooser",
"Sampling",
"StoppingCriteria",
"StopSequenceCriteria",
"FinishReason",
"Weights",
]
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/convert.py | import datetime
import torch
import os
from loguru import logger
from pathlib import Path
from safetensors.torch import save_file, load_file, _find_shared_tensors, _is_complete
from typing import List, Dict
from collections import defaultdict
def _remove_duplicate_names(
state_dict: Dict[str, torch.Tensor],
*,
preferred_names: List[str] = None,
discard_names: List[str] = None,
) -> Dict[str, List[str]]:
if preferred_names is None:
preferred_names = []
preferred_names = set(preferred_names)
if discard_names is None:
discard_names = []
discard_names = set(discard_names)
shareds = _find_shared_tensors(state_dict)
to_remove = defaultdict(list)
for shared in shareds:
complete_names = set(
[name for name in shared if _is_complete(state_dict[name])]
)
if not complete_names:
raise RuntimeError(
f"Error while trying to find names to remove to save state dict, but found no suitable name to keep for saving amongst: {shared}. None is covering the entire storage.Refusing to save/load the model since you could be storing much more memory than needed. Please refer to https://huggingface.co/docs/safetensors/torch_shared_tensors for more information. Or open an issue."
)
keep_name = sorted(list(complete_names))[0]
# Mecanism to preferentially select keys to keep
# coming from the on-disk file to allow
# loading models saved with a different choice
# of keep_name
preferred = complete_names.difference(discard_names)
if preferred:
keep_name = sorted(list(preferred))[0]
if preferred_names:
preferred = preferred_names.intersection(complete_names)
if preferred:
keep_name = sorted(list(preferred))[0]
for name in sorted(shared):
if name != keep_name:
to_remove[keep_name].append(name)
return to_remove
def convert_file(pt_file: Path, sf_file: Path, discard_names: List[str]):
"""
Convert a pytorch file to a safetensors file
This will remove duplicate tensors from the file.
Unfortunately, this might not respect *transformers* convention.
Forcing us to check for potentially different keys during load when looking
for specific tensors (making tensor sharing explicit).
"""
loaded = torch.load(pt_file, map_location="cpu")
if "state_dict" in loaded:
loaded = loaded["state_dict"]
to_removes = _remove_duplicate_names(loaded, discard_names=discard_names)
metadata = {"format": "pt"}
for kept_name, to_remove_group in to_removes.items():
for to_remove in to_remove_group:
if to_remove not in metadata:
metadata[to_remove] = kept_name
del loaded[to_remove]
# Force tensors to be contiguous
loaded = {k: v.contiguous() for k, v in loaded.items()}
dirname = os.path.dirname(sf_file)
os.makedirs(dirname, exist_ok=True)
save_file(loaded, sf_file, metadata=metadata)
reloaded = load_file(sf_file)
for k in loaded:
pt_tensor = loaded[k]
sf_tensor = reloaded[k]
if not torch.equal(pt_tensor, sf_tensor):
raise RuntimeError(f"The output tensors do not match for key {k}")
def convert_files(pt_files: List[Path], sf_files: List[Path], discard_names: List[str]):
assert len(pt_files) == len(sf_files)
N = len(pt_files)
# We do this instead of using tqdm because we want to parse the logs with the launcher
for i, (pt_file, sf_file) in enumerate(zip(pt_files, sf_files)):
# Skip blacklisted files
if (
"arguments" in pt_file.name
or "args" in pt_file.name
or "training" in pt_file.name
):
continue
start = datetime.datetime.now()
convert_file(pt_file, sf_file, discard_names)
elapsed = datetime.datetime.now() - start
logger.info(f"Convert: [{i + 1}/{N}] -- Took: {elapsed}")
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/dist.py | import os
import torch
from datetime import timedelta
from loguru import logger
# Tensor Parallelism settings
RANK = int(os.getenv("RANK", "0"))
WORLD_SIZE = int(os.getenv("WORLD_SIZE", "1"))
# CUDA memory fraction
MEMORY_FRACTION = float(os.getenv("CUDA_MEMORY_FRACTION", "1.0"))
class FakeBarrier:
def wait(self):
pass
class FakeGroup:
def __init__(self, rank, size):
self._rank = rank
self._size = size
def allreduce(self, *args, **kwargs):
return FakeBarrier()
def allgather(self, inputs, local_tensor, **kwargs):
assert (
len(inputs[0]) == len(local_tensor) == 1
), f"{len(inputs[0])} != {len(local_tensor)} != 1, and the FakeGroup is supposed to join on simple tensors"
for input_ in inputs:
input_[0].data = local_tensor[0].data
return FakeBarrier()
def barrier(self, *args, **kwargs):
return FakeBarrier()
def size(self):
return self._size
def rank(self):
return self._rank
def initialize_torch_distributed():
if torch.cuda.is_available():
from torch.distributed import ProcessGroupNCCL
# Set the device id.
assert WORLD_SIZE <= torch.cuda.device_count(), "Each process is one gpu"
device = RANK % torch.cuda.device_count()
torch.cuda.set_device(device)
torch.cuda.set_per_process_memory_fraction(MEMORY_FRACTION, device)
backend = "nccl"
options = ProcessGroupNCCL.Options()
options.is_high_priority_stream = True
options._timeout = timedelta(seconds=60)
else:
backend = "gloo"
options = None
if WORLD_SIZE == 1:
return FakeGroup(RANK, WORLD_SIZE), RANK, WORLD_SIZE
else:
if os.getenv("DEBUG", None) == "1":
return FakeGroup(RANK, WORLD_SIZE), RANK, WORLD_SIZE
if not torch.distributed.is_initialized():
# Call the init process.
torch.distributed.init_process_group(
backend=backend,
world_size=WORLD_SIZE,
rank=RANK,
timeout=timedelta(seconds=60),
pg_options=options,
)
else:
logger.warning("torch.distributed is already initialized.")
return torch.distributed.group.WORLD, RANK, WORLD_SIZE
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/flash_attn.py | import os
import torch
from loguru import logger
if os.getenv("USE_FLASH_ATTENTION", "").lower() == "false":
raise ImportError("`USE_FLASH_ATTENTION` is false.")
if not torch.cuda.is_available():
raise ImportError("CUDA is not available")
major, minor = torch.cuda.get_device_capability()
is_sm75 = major == 7 and minor == 5
is_sm8x = major == 8 and minor >= 0
is_sm90 = major == 9 and minor == 0
HAS_FLASH_ATTN = False
HAS_FLASH_ATTN_V2 = False
try:
try:
import flash_attn_2_cuda
except ImportError:
raise ImportError(
"Flash Attention V2 is not installed.\n"
"Use the official Docker image (ghcr.io/huggingface/text-generation-inference:latest) "
"or install flash attention v2 with `cd server && make install install-flash-attention-v2`"
)
if not (is_sm8x or is_sm90):
raise ImportError(
f"GPU with CUDA capability {major} {minor} is not supported for "
"Flash Attention V2"
)
HAS_FLASH_ATTN_V2 = True
except ImportError as e:
try:
import flash_attn_cuda
except ImportError:
raise ImportError(
"Flash Attention is not installed.\n"
"Use the official Docker image (ghcr.io/huggingface/text-generation-inference:latest) "
"or install flash attention with `cd server && make install install-flash-attention`"
) from e
if not (is_sm75 or is_sm8x or is_sm90):
raise ImportError(
f"GPU with CUDA capability {major} {minor} is not supported"
) from e
logger.warning(f"Unable to use Flash Attention V2: {e}")
HAS_FLASH_ATTN = True
def attention(
q,
k,
v,
out,
cu_seqlens,
max_s,
softmax_scale,
):
if HAS_FLASH_ATTN_V2:
return flash_attn_2_cuda.varlen_fwd(
q,
k,
v,
out,
cu_seqlens,
cu_seqlens,
max_s,
max_s,
0.0,
softmax_scale,
False,
True,
False,
None,
)
if HAS_FLASH_ATTN:
# Flash attention v1 requires q, k and v to have the same number of heads
if k.shape[1] != q.shape[1]:
# MQA expand
if k.shape[1] == 1:
k = k.expand(-1, q.shape[1], -1)
# Grouped attention reshape
else:
original_shape = k.shape
k = (
k.unsqueeze(2)
.expand(-1, -1, q.shape[1] // k.shape[1], -1)
.reshape(original_shape[0], -1, original_shape[2])
)
if v.shape[1] != q.shape[1]:
# MQA expand
if v.shape[1] == 1:
v = v.expand(-1, q.shape[1], -1)
# Grouped attention reshape
else:
original_shape = v.shape
v = (
v.unsqueeze(2)
.expand(-1, -1, q.shape[1] // v.shape[1], -1)
.reshape(original_shape[0], -1, original_shape[2])
)
return flash_attn_cuda.fwd(
q,
k,
v,
out,
cu_seqlens,
cu_seqlens,
max_s,
max_s,
0.0,
softmax_scale,
False,
True,
False,
0,
None,
)
raise NotImplementedError("flash attention is not installed")
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/hub.py | import time
import os
from datetime import timedelta
from loguru import logger
from pathlib import Path
from typing import Optional, List
from huggingface_hub import HfApi, hf_hub_download
from huggingface_hub.constants import HUGGINGFACE_HUB_CACHE
from huggingface_hub.utils import (
LocalEntryNotFoundError,
EntryNotFoundError,
RevisionNotFoundError, # Import here to ease try/except in other part of the lib
)
WEIGHTS_CACHE_OVERRIDE = os.getenv("WEIGHTS_CACHE_OVERRIDE", None)
def weight_hub_files(
model_id: str, revision: Optional[str] = None, extension: str = ".safetensors"
) -> List[str]:
"""Get the weights filenames on the hub"""
api = HfApi()
info = api.model_info(model_id, revision=revision)
filenames = [
s.rfilename
for s in info.siblings
if s.rfilename.endswith(extension)
and len(s.rfilename.split("/")) == 1
and "arguments" not in s.rfilename
and "args" not in s.rfilename
and "training" not in s.rfilename
]
if not filenames:
raise EntryNotFoundError(
f"No {extension} weights found for model {model_id} and revision {revision}.",
None,
)
return filenames
def try_to_load_from_cache(
model_id: str, revision: Optional[str], filename: str
) -> Optional[Path]:
"""Try to load a file from the Hugging Face cache"""
if revision is None:
revision = "main"
object_id = model_id.replace("/", "--")
repo_cache = Path(HUGGINGFACE_HUB_CACHE) / f"models--{object_id}"
if not repo_cache.is_dir():
# No cache for this model
return None
refs_dir = repo_cache / "refs"
snapshots_dir = repo_cache / "snapshots"
# Resolve refs (for instance to convert main to the associated commit sha)
if refs_dir.is_dir():
revision_file = refs_dir / revision
if revision_file.exists():
with revision_file.open() as f:
revision = f.read()
# Check if revision folder exists
if not snapshots_dir.exists():
return None
cached_shas = os.listdir(snapshots_dir)
if revision not in cached_shas:
# No cache for this revision and we won't try to return a random revision
return None
# Check if file exists in cache
cached_file = snapshots_dir / revision / filename
return cached_file if cached_file.is_file() else None
def weight_files(
model_id: str, revision: Optional[str] = None, extension: str = ".safetensors"
) -> List[Path]:
"""Get the local files"""
# Local model
if Path(model_id).exists() and Path(model_id).is_dir():
local_files = list(Path(model_id).glob(f"*{extension}"))
if not local_files:
raise FileNotFoundError(
f"No local weights found in {model_id} with extension {extension}"
)
return local_files
try:
filenames = weight_hub_files(model_id, revision, extension)
except EntryNotFoundError as e:
if extension != ".safetensors":
raise e
# Try to see if there are pytorch weights
pt_filenames = weight_hub_files(model_id, revision, extension=".bin")
# Change pytorch extension to safetensors extension
# It is possible that we have safetensors weights locally even though they are not on the
# hub if we converted weights locally without pushing them
filenames = [
f"{Path(f).stem.lstrip('pytorch_')}.safetensors" for f in pt_filenames
]
if WEIGHTS_CACHE_OVERRIDE is not None:
files = []
for filename in filenames:
p = Path(WEIGHTS_CACHE_OVERRIDE) / filename
if not p.exists():
raise FileNotFoundError(
f"File {p} not found in {WEIGHTS_CACHE_OVERRIDE}."
)
files.append(p)
return files
files = []
for filename in filenames:
cache_file = try_to_load_from_cache(
model_id, revision=revision, filename=filename
)
if cache_file is None:
raise LocalEntryNotFoundError(
f"File {filename} of model {model_id} not found in "
f"{os.getenv('HUGGINGFACE_HUB_CACHE', 'the local cache')}. "
f"Please run `text-generation-server download-weights {model_id}` first."
)
files.append(cache_file)
return files
def download_weights(
filenames: List[str], model_id: str, revision: Optional[str] = None
) -> List[Path]:
"""Download the safetensors files from the hub"""
def download_file(filename, tries=5, backoff: int = 5):
local_file = try_to_load_from_cache(model_id, revision, filename)
if local_file is not None:
logger.info(f"File {filename} already present in cache.")
return Path(local_file)
for i in range(tries):
try:
logger.info(f"Download file: {filename}")
start_time = time.time()
local_file = hf_hub_download(
filename=filename,
repo_id=model_id,
revision=revision,
local_files_only=False,
)
logger.info(
f"Downloaded {local_file} in {timedelta(seconds=int(time.time() - start_time))}."
)
return Path(local_file)
except Exception as e:
if i + 1 == tries:
raise e
logger.error(e)
logger.info(f"Retrying in {backoff} seconds")
time.sleep(backoff)
logger.info(f"Retry {i + 1}/{tries - 1}")
# We do this instead of using tqdm because we want to parse the logs with the launcher
start_time = time.time()
files = []
for i, filename in enumerate(filenames):
file = download_file(filename)
elapsed = timedelta(seconds=int(time.time() - start_time))
remaining = len(filenames) - (i + 1)
eta = (elapsed / (i + 1)) * remaining if remaining > 0 else 0
logger.info(f"Download: [{i + 1}/{len(filenames)}] -- ETA: {eta}")
files.append(file)
return files
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/layers.py | import os
import torch
import torch.distributed
from torch import nn
from torch.nn import functional as F
from typing import List
HAS_BITS_AND_BYTES = True
try:
import bitsandbytes as bnb
from bitsandbytes.nn import Int8Params, Params4bit
except ImportError:
HAS_BITS_AND_BYTES = False
from accelerate import init_empty_weights
from text_generation_server.utils.gptq.quant_linear import QuantLinear
HAS_EXLLAMA = True
if os.getenv("DISABLE_EXLLAMA") == "True":
HAS_EXLLAMA = False
try:
from text_generation_server.utils.gptq.exllama import Ex4bitLinear
except ImportError:
HAS_EXLLAMA = False
from typing import Optional
# Monkey patching
@classmethod
def load_layer_norm(cls, prefix, weights, eps):
weight = weights.get_tensor(f"{prefix}.weight")
bias = weights.get_tensor(f"{prefix}.bias")
with init_empty_weights():
ln = cls(weight.shape, eps=eps)
ln.weight = nn.Parameter(weight)
ln.bias = nn.Parameter(bias)
return ln
@classmethod
def load_layer_norm_no_bias(cls, prefix, weights, eps):
weight = weights.get_tensor(f"{prefix}.weight")
with init_empty_weights():
ln = cls(weight.shape, eps=eps)
ln.weight = nn.Parameter(weight)
ln.bias = None
return ln
torch.nn.LayerNorm.load = load_layer_norm
torch.nn.LayerNorm.load_no_bias = load_layer_norm_no_bias
class FastLinear(nn.Module):
def __init__(
self,
weight,
bias,
) -> None:
super().__init__()
self.weight = nn.Parameter(weight)
if bias is not None:
self.bias = nn.Parameter(bias)
else:
self.bias = None
@classmethod
def load(cls, config, prefix: str, weights, bias: bool):
weight = weights.get_tensor(f"{prefix}.weight")
if bias:
bias = weights.get_tensor(f"{prefix}.bias")
else:
bias = None
return cls(weight, bias)
def forward(self, input: torch.Tensor) -> torch.Tensor:
return F.linear(input, self.weight, self.bias)
class Linear8bitLt(nn.Module):
def __init__(
self,
weight,
bias,
has_fp16_weights=True,
memory_efficient_backward=False,
threshold=0.0,
index=None,
):
super().__init__()
assert (
not memory_efficient_backward
), "memory_efficient_backward is no longer required and the argument is deprecated in 0.37.0 and will be removed in 0.39.0"
self.state = bnb.MatmulLtState()
self.index = index
# Necessary for stacked layers
self.state.threshold = threshold
self.state.has_fp16_weights = has_fp16_weights
self.state.memory_efficient_backward = memory_efficient_backward
if threshold > 0.0 and not has_fp16_weights:
self.state.use_pool = True
self.weight = Int8Params(
weight.data,
has_fp16_weights=has_fp16_weights,
requires_grad=has_fp16_weights,
)
self.weight.cuda(weight.device)
self.bias = bias
def init_8bit_state(self):
self.state.CB = self.weight.CB
self.state.SCB = self.weight.SCB
self.weight.CB = None
self.weight.SCB = None
def forward(self, x: torch.Tensor):
self.state.is_training = self.training
if self.weight.CB is not None:
self.init_8bit_state()
# weights are cast automatically as Int8Params, but the bias has to be cast manually
if self.bias is not None and self.bias.dtype != x.dtype:
self.bias.data = self.bias.data.to(x.dtype)
out = bnb.matmul(x, self.weight, bias=self.bias, state=self.state)
if not self.state.has_fp16_weights:
if self.state.CB is not None and self.state.CxB is not None:
# we converted 8-bit row major to turing/ampere format in the first inference pass
# we no longer need the row-major weight
del self.state.CB
self.weight.data = self.state.CxB
return out
class Linear4bit(nn.Module):
def __init__(self, weight, bias, quant_type):
super().__init__()
self.weight = Params4bit(
weight.data, requires_grad=False, compress_statistics=True, quant_type=quant_type
)
self.compute_dtype = None
self.weight.cuda(weight.device)
self.bias = bias
def forward(self, x: torch.Tensor):
# weights are cast automatically as Int8Params, but the bias has to be cast manually
if self.bias is not None and self.bias.dtype != x.dtype:
self.bias.data = self.bias.data.to(x.dtype)
if getattr(self.weight, "quant_state", None) is None:
print(
"FP4 quantization state not initialized. Please call .cuda() or .to(device) on the LinearFP4 layer first."
)
inp_dtype = x.dtype
if self.compute_dtype is not None:
x = x.to(self.compute_dtype)
bias = None if self.bias is None else self.bias.to(self.compute_dtype)
out = bnb.matmul_4bit(
x, self.weight.t(), bias=bias, quant_state=self.weight.quant_state
)
out = out.to(inp_dtype)
return out
def get_linear(weight, bias, quantize):
if quantize is None:
linear = FastLinear(weight, bias)
elif quantize == "bitsandbytes":
linear = Linear8bitLt(
weight,
bias,
has_fp16_weights=False,
threshold=6.0,
)
if bias is not None:
linear.bias = nn.Parameter(bias)
elif quantize == "bitsandbytes-fp4":
linear = Linear4bit(
weight,
bias,
quant_type="fp4",
)
elif quantize == "bitsandbytes-nf4":
linear = Linear4bit(
weight,
bias,
quant_type="nf4",
)
elif quantize == "gptq":
try:
qweight, qzeros, scales, g_idx, bits, groupsize, use_exllama = weight
except Exception:
raise NotImplementedError(
f"The passed weight is not `gptq` compatible, loader needs to be updated."
)
if use_exllama:
linear = Ex4bitLinear(qweight, qzeros, scales, g_idx, bias, bits, groupsize)
else:
linear = QuantLinear(
qweight,
qzeros,
scales,
g_idx,
bias,
bits,
groupsize,
)
else:
raise NotImplementedError(f"Quantization `{quantize}` is not implemented yet.")
return linear
class SuperLayer(nn.Module):
def __init__(self, linear):
super().__init__()
self.linear = linear
def forward(self, x):
return self.linear.forward(x)
class TensorParallelHead(SuperLayer):
def __init__(self, linear, process_group, should_gather: bool):
super().__init__(linear)
self.process_group = process_group
self.should_gather = should_gather
@staticmethod
def load(config, prefix: str, weights):
if weights.process_group.size() > 1:
try:
weight = weights.get_sharded(f"{prefix}.weight", dim=0)
should_gather = True
except AssertionError:
# If the vocab size is not divisible by number of shards
# just load the entire thing.
weight = weights.get_tensor(f"{prefix}.weight")
should_gather = False
else:
weight = weights.get_tensor(f"{prefix}.weight")
should_gather = False
# GPTQ doesn't quantize heads (nor embeddings)
if config.quantize == "gptq":
quantize = None
else:
quantize = config.quantize
return TensorParallelHead(
get_linear(weight, bias=None, quantize=quantize),
process_group=weights.process_group,
should_gather=should_gather,
)
def forward(self, input: torch.Tensor) -> torch.Tensor:
if not self.should_gather:
return super().forward(input)
world_size = self.process_group.size()
if len(input.shape) == 2 and isinstance(self.linear, FastLinear):
out_dim = self.linear.weight.shape[0]
if input.shape[0] == 1:
world_out = input.new_empty(1, out_dim * world_size)
local_out = input.new_empty(1, out_dim)
gather_input = local_out
else:
world_out = input.new_empty(out_dim * world_size, input.shape[0])
gather_input = input.new_empty(out_dim, input.shape[0])
local_out = gather_input.T
torch.mm(input, self.linear.weight.T, out=local_out)
torch.distributed.all_gather_into_tensor(
world_out, gather_input, group=self.process_group
)
if input.shape[0] == 1:
return world_out
return world_out.T
output = super().forward(input)
world_output = [
torch.empty_like(output) for _ in range(self.process_group.size())
]
torch.distributed.all_gather(world_output, output, group=self.process_group)
world_output = torch.cat(world_output, dim=-1)
return world_output
class TensorParallelColumnLinear(SuperLayer):
@classmethod
def load(cls, config, prefix: str, weights, bias: bool):
return cls.load_multi(config, [prefix], weights, bias, dim=0)
@classmethod
def load_multi(cls, config, prefixes: List[str], weights, bias: bool, dim: int):
weight = weights.get_multi_weights_col(
prefixes, quantize=config.quantize, dim=dim
)
if bias:
b = [weights.get_sharded(f"{p}.bias", dim=0) for p in prefixes]
bias = torch.cat(b, dim=dim)
else:
bias = None
linear = get_linear(weight, bias, config.quantize)
return cls(linear)
class TensorParallelRowLinear(SuperLayer):
def __init__(self, linear, process_group):
super().__init__(linear)
self.process_group = process_group
@classmethod
def load(cls, config, prefix: str, weights, bias: bool):
weight = weights.get_multi_weights_row(prefix, quantize=config.quantize)
if bias and weights.process_group.rank() == 0:
# Rank is only on the first rank process
bias = weights.get_tensor(f"{prefix}.bias")
else:
bias = None
return cls(
get_linear(weight, bias, config.quantize),
process_group=weights.process_group,
)
def forward(self, input: torch.Tensor) -> torch.Tensor:
out = super().forward(input)
if self.process_group.size() > 1:
torch.distributed.all_reduce(out, group=self.process_group)
return out
class TensorParallelEmbedding(nn.Module):
def __init__(self, prefix: str, weights, reduce=True):
super().__init__()
weight = weights.get_partial_sharded(f"{prefix}.weight", dim=0)
num_embeddings = weights.get_shape(f"{prefix}.weight")[0]
process_group = weights.process_group
world_size = process_group.size()
rank = process_group.rank()
block_size = num_embeddings // world_size
self.min_id = rank * block_size
self.max_id = min(num_embeddings, (rank + 1) * block_size)
self.null_idx = block_size
self.process_group = weights.process_group
self.reduce = reduce
"""Additional 0 entry used for masking"""
self.weight = nn.Parameter(F.pad(weight, (0, 0, 0, 1)))
def forward(self, input: torch.Tensor) -> torch.Tensor:
# default all out of bounds values to `self.null_idx` that will then be mapped to 0
# translate for [0, self.max_id - self.min_id[
input = torch.where(
(self.min_id > input) | (input >= self.max_id),
self.null_idx,
input - self.min_id,
)
out = torch.nn.functional.embedding(input, self.weight)
if self.reduce and self.process_group.size() > 1:
torch.distributed.all_reduce(out, group=self.process_group)
return out
try:
import dropout_layer_norm
class FastLayerNorm(nn.LayerNorm):
def forward(self, hidden_states, residual=None):
if hidden_states.shape[-1] > 8192:
if residual is not None:
hidden_states += residual
residual = hidden_states
return super(FastLayerNorm, self).forward(hidden_states), residual
else:
(
normed_hidden_states,
residual,
*rest,
) = dropout_layer_norm.dropout_add_ln_fwd(
hidden_states,
residual,
self.weight,
self.bias,
None,
None,
None,
None,
0.0,
self.eps,
1.0,
0,
None,
False,
False,
)
if residual is None:
residual = hidden_states
return normed_hidden_states, residual
except ImportError:
pass
try:
from flash_attn.layers.rotary import RotaryEmbedding
import rotary_emb
def _create_inv_freq(dim, base, device):
inv_freq = 1.0 / (
base
** (torch.arange(0, dim, 2, device=device, dtype=torch.float32) / dim)
)
return inv_freq
def _get_rope_config(config):
if os.getenv("ROPE_SCALING", None) is not None:
rope_scaling = {"type": os.environ["ROPE_SCALING"], "factor": float(os.environ["ROPE_FACTOR"])}
return rope_scaling
return getattr(config, "rope_scaling", None)
class PositionRotaryEmbedding(nn.Module):
def __init__(self, inv_freq, scaling_factor):
super().__init__()
self.inv_freq = inv_freq
self._seq_len_cached = 0
self._cos_cached = None
self._sin_cached = None
self._cos_k_cached = None
self._sin_k_cached = None
self.scaling_factor = scaling_factor
self.dynamic_args = None
@classmethod
def static(cls, config, dim, base, device):
inv_freq = _create_inv_freq(dim, base, device)
scaling_factor = None
rope_scaling = _get_rope_config(config)
if rope_scaling is not None:
scaling_factor = rope_scaling["factor"]
if rope_scaling["type"] == "linear":
pass
elif rope_scaling["type"] == "dynamic":
return DynamicPositionRotaryEmbedding(dim=dim, max_position_embeddings=config.max_position_embeddings, base=base, device=inv_freq.device, scaling_factor=scaling_factor)
else:
raise NotImplementedError(f"rope scaling type {rope_scaling['type']} is not implemented or invalid")
return cls(inv_freq, scaling_factor)
@classmethod
def load(cls, config, prefix, weights):
# XXX: Always load this in float32 !
dtype = weights.dtype
weights.dtype = torch.float32
inv_freq = weights.get_tensor(f"{prefix}.inv_freq")
weights.dtype = dtype
scaling_factor = None
rope_scaling = _get_rope_config(config)
if rope_scaling is not None:
scaling_factor = rope_scaling["factor"]
if rope_scaling["type"] == "linear":
pass
elif rope_scaling["type"] == "dynamic":
return DynamicPositionRotaryEmbedding(dim=2*inv_freq.shape[0], max_position_embeddings=config.max_position_embeddings, base=10000.0, device=inv_freq.device, scaling_factor=scaling_factor)
else:
raise NotImplementedError(f"rope scaling type {rope_scaling['type']} is not implemented or invalid")
return cls(inv_freq, scaling_factor)
def _update_cos_sin_cache(self, dtype, device, seqlen):
# Reset the tables if the sequence length has changed,
# or if we're on a new device (possibly due to tracing for instance)
if (
seqlen > self._seq_len_cached
or self._cos_cached.device != device
or self._cos_cached.dtype != dtype
):
self._seq_len_cached = seqlen
t = torch.arange(seqlen, device=device, dtype=self.inv_freq.dtype)
if self.scaling_factor is not None:
t /= self.scaling_factor
# Don't do einsum, it converts fp32 to fp16
# freqs = torch.einsum("i,j->ij", t, self.inv_freq)
freqs = torch.outer(t, self.inv_freq.to(device=t.device))
self._cos_cached = torch.cos(freqs).to(dtype)
self._sin_cached = torch.sin(freqs).to(dtype)
def get_cos_sin(
self, position_ids: torch.Tensor, max_s: int, dtype: torch.dtype
):
"""
Return cos and sin for the asked position ids
"""
self._update_cos_sin_cache(dtype, position_ids.device, max_s)
cos = torch.index_select(self._cos_cached, 0, position_ids)
sin = torch.index_select(self._sin_cached, 0, position_ids)
return cos.unsqueeze(1), sin.unsqueeze(1)
def forward(self, x: torch.Tensor, cos: torch.Tensor, sin: torch.Tensor):
rotary_dim = cos.shape[-1]
x1 = x[..., :rotary_dim]
x2 = x[..., rotary_dim : 2 * rotary_dim]
rotary_emb.apply_rotary(x1, x2, cos, sin, x1, x2, False)
return x
class DynamicPositionRotaryEmbedding(PositionRotaryEmbedding):
def __init__(self, dim, max_position_embeddings, base, device, scaling_factor):
inv_freq = _create_inv_freq(dim, base, device)
super().__init__(inv_freq, scaling_factor)
self.dim = dim
self.max_position_embeddings = max_position_embeddings
self.base = base
def _update_cos_sin_cache(self, dtype, device, seqlen):
# Reset the tables if the sequence length has changed,
# or if we're on a new device (possibly due to tracing for instance)
if (
seqlen > self._seq_len_cached
or self._cos_cached.device != device
or self._cos_cached.dtype != dtype
):
if seqlen > self.max_position_embeddings:
newbase = self.base * ((self.scaling_factor * seqlen / self.max_position_embeddings) - (self.scaling_factor - 1)) ** (self.dim / (self.dim - 2))
self.inv_freq = _create_inv_freq(self.dim, newbase, self.inv_freq.device)
self._seq_len_cached = seqlen
t = torch.arange(seqlen, device=device, dtype=self.inv_freq.dtype)
if self.scaling_factor is not None:
t /= self.scaling_factor
# Don't do einsum, it converts fp32 to fp16
# freqs = torch.einsum("i,j->ij", t, self.inv_freq)
freqs = torch.outer(t, self.inv_freq.to(device=t.device))
self._cos_cached = torch.cos(freqs).to(dtype)
self._sin_cached = torch.sin(freqs).to(dtype)
except ImportError:
pass
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/logits_process.py | import math
import torch
from functools import lru_cache
from typing import Optional, List, Dict, Union
from transformers import (
LogitsWarper,
LogitsProcessor,
TemperatureLogitsWarper,
TopKLogitsWarper,
TopPLogitsWarper,
TypicalLogitsWarper,
)
mempool = torch.cuda.graph_pool_handle() if torch.cuda.is_available() else None
class StaticWarper:
def __init__(
self,
temperature=1.0,
top_k=None,
top_p=None,
typical_p=None,
):
self.warpers = []
if temperature is not None and temperature != 1.0:
temperature = float(temperature)
self.warpers.append(TemperatureLogitsWarper(temperature))
if top_k is not None and top_k != 0:
self.warpers.append(TopKLogitsWarper(top_k=top_k))
if top_p is not None and top_p < 1.0:
self.warpers.append(TopPLogitsWarper(top_p=top_p))
if typical_p is not None and typical_p < 1.0:
self.warpers.append(TypicalLogitsWarper(mass=typical_p))
self.cuda_graph = None
self.static_scores = None
self.static_warped_scores = None
self.static_next_logprob = None
def __call__(self, scores):
if torch.cuda.is_available():
if self.cuda_graph is None:
self.static_scores = scores
self.cuda_graph = torch.cuda.CUDAGraph()
with torch.cuda.graph(self.cuda_graph, pool=mempool):
local_scores = self.static_scores
for warper in self.warpers:
local_scores = warper(None, local_scores)
self.static_warped_scores = local_scores
# Compute logprobs
self.static_next_logprob = torch.log_softmax(
self.static_warped_scores, -1
)
self.static_scores.copy_(scores)
self.cuda_graph.replay()
return self.static_warped_scores, self.static_next_logprob
# CPU branch
for warper in self.warpers:
scores = warper(None, scores)
return scores, torch.log_softmax(scores, -1)
@lru_cache(10)
def static_warper(
temperature: Optional[float],
top_k: Optional[int],
top_p: Optional[float],
typical_p: Optional[float],
) -> StaticWarper:
return StaticWarper(
temperature=temperature, top_k=top_k, top_p=top_p, typical_p=typical_p
)
class HeterogeneousRepetitionPenaltyLogitsProcessor(LogitsProcessor):
r"""
[`LogitsProcessor`] enforcing an exponential penalty on repeated sequences.
This version allows for a separate value for each sample and runs inplace when possible.
It doesn't validate inputs.
Args:
repetition_penalty (`List[float]`):
The parameter for repetition penalty. 1.0 means no penalty. See [this
paper](https://arxiv.org/pdf/1909.05858.pdf) for more details.
"""
def __init__(self, penalty: List[float], dtype: torch.dtype, device: torch.device):
self.penalty = penalty
self.penalty_tensor = torch.tensor(
penalty, dtype=dtype, device=device
).unsqueeze(1)
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
score = torch.gather(scores, 1, input_ids)
# if score < 0 then repetition penalty has to be multiplied to reduce the previous token probability
score = torch.where(
score < 0, score * self.penalty_tensor, score / self.penalty_tensor
)
scores.scatter_(1, input_ids, score)
return scores
def filter(self, indices):
self.penalty = [self.penalty[i] for i in indices]
if any([x != 1.0 for x in self.penalty]):
self.penalty_tensor = self.penalty_tensor[indices]
return self
return None
class HeterogeneousTemperatureLogitsWarper:
r"""
[`LogitsWarper`] for temperature (exponential scaling output probability distribution).
This version allows for a separate value for each sample and runs inplace when possible.
It doesn't validate inputs.
Args:
temperature (`float`):
The value used to module the logits distribution.
"""
def __init__(
self, temperature: List[float], dtype: torch.dtype, device: torch.device
):
self.temperature = temperature
self.temperature_tensor = torch.tensor(
temperature, dtype=dtype, device=device
).unsqueeze(1)
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
scores.div_(self.temperature_tensor)
return scores
def filter(self, indices):
self.temperature = [self.temperature[i] for i in indices]
if any([x != 1.0 for x in self.temperature]):
self.temperature_tensor = self.temperature_tensor[indices]
return self
return None
class HeterogeneousTopPLogitsWarper(LogitsWarper):
"""
[`LogitsWarper`] that performs top-p, i.e. restricting to top tokens summing to prob_cut_off <= prob_cut_off.
This version allows for a separate value for each sample and runs inplace when possible.
It doesn't validate inputs.
Args:
top_p (`float`):
If set to < 1, only the smallest set of most probable tokens with probabilities that add up to `top_p` or
higher are kept for generation.
filter_value (`float`, *optional*, defaults to `-float("Inf")`):
All filtered values will be set to this float value.
min_tokens_to_keep (`int`, *optional*, defaults to 1):
Minimum number of tokens that cannot be filtered.
"""
def __init__(
self,
top_p: List[float],
dtype: torch.dtype,
device: torch.device,
filter_value: float = -math.inf,
min_tokens_to_keep: int = 1,
):
self.top_p = top_p
self.top_p_opposite = 1 - torch.tensor(
top_p, dtype=dtype, device=device
).unsqueeze(1)
self.filter_value = filter_value
self.min_tokens_to_keep = min_tokens_to_keep
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
sorted_logits, sorted_indices = torch.sort(scores, descending=False)
probs = sorted_logits.softmax(dim=-1)
# This is way faster for some reason
for i in range(probs.shape[0]):
probs[i] = probs[i].cumsum(dim=-1)
# Remove tokens with cumulative top_p above the threshold (token with 0 are kept)
sorted_indices_to_remove = probs <= self.top_p_opposite
# Keep at least min_tokens_to_keep
sorted_indices_to_remove[..., -self.min_tokens_to_keep :] = 0
# scatter sorted tensors to original indexing
indices_to_remove = sorted_indices_to_remove.scatter(
1, sorted_indices, sorted_indices_to_remove
)
warped_scores = scores.masked_fill_(indices_to_remove, self.filter_value)
return warped_scores
def filter(self, indices):
self.top_p = [self.top_p[i] for i in indices]
if any([x < 1.0 for x in self.top_p]):
self.top_p_opposite = self.top_p_opposite[indices]
return self
return None
class HeterogeneousTopKLogitsWarper(LogitsWarper):
r"""
[`LogitsWarper`] that performs top-k, i.e. restricting to the k highest probability elements.
This version allows for a separate value for each sample and runs inplace when possible.
It doesn't validate inputs.
Args:
top_k (`int`):
The number of highest probability vocabulary tokens to keep for top-k-filtering.
filter_value (`float`, *optional*, defaults to `-float("Inf")`):
All filtered values will be set to this float value.
min_tokens_to_keep (`int`, *optional*, defaults to 1):
Minimum number of tokens that cannot be filtered.
"""
def __init__(
self,
top_k: List[int],
device: torch.device,
filter_value: float = -math.inf,
min_tokens_to_keep: int = 1,
):
self.top_k = top_k
self.max_top_k = max(top_k)
# value - 1 as we will use top_k to index and python uses 0 based numbering
self.top_k_tensor = torch.tensor(
[max(x - 1, min_tokens_to_keep - 1) for x in top_k],
dtype=torch.int64,
device=device,
).unsqueeze(1)
# 0 is a special value that disables top_k warping for this member of the batch
disabled = [x == 0 for x in top_k]
if any(disabled):
self.top_k_disabled_mask = torch.tensor(
disabled, dtype=torch.bool, device=device
).view(-1, 1)
else:
self.top_k_disabled_mask = None
self.filter_value = filter_value
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
# If max_top_k is superior to the vocab, we need to clamp or the warper will fail
if scores.size(-1) < self.max_top_k:
max_top_k = scores.size(-1)
top_k = torch.clamp_max(self.top_k_tensor, max_top_k)
else:
max_top_k = self.max_top_k
top_k = self.top_k_tensor
# Get the kth score for each member of the batch
kth_scores = torch.gather(torch.topk(scores, max_top_k)[0], 1, top_k)
# Mask member of kth_scores that do not want to use top_k warping
if self.top_k_disabled_mask is not None:
kth_scores.masked_fill_(self.top_k_disabled_mask, self.filter_value)
# Remove all tokens with a probability less than the last token of the top-k
indices_to_remove = scores < kth_scores
scores.masked_fill_(indices_to_remove, self.filter_value)
return scores
def filter(self, indices):
self.top_k = [self.top_k[i] for i in indices]
disabled = [x == 0 for x in self.top_k]
if not all(disabled):
self.top_k_tensor = self.top_k_tensor[indices]
self.max_top_k = max(self.top_k)
if self.top_k_disabled_mask is not None:
self.top_k_disabled_mask = (
self.top_k_disabled_mask[indices] if any(disabled) else None
)
return self
return None
class HeterogeneousTypicalLogitsWarper(LogitsWarper):
r"""
[`LogitsWarper`] that performs typical decoding. See [Typical Decoding for Natural Language
Generation](https://arxiv.org/abs/2202.00666) for more information.
This version allows for a separate value for each sample and runs inplace when possible.
It doesn't validate inputs.
Args:
mass (`float`):
Value of typical_p between 0 and 1 inclusive, defaults to 0.9.
filter_value (`float`, *optional*, defaults to `-float("Inf")`):
All filtered values will be set to this float value.
min_tokens_to_keep (`int`, *optional*, defaults to 1):
Minimum number of tokens that cannot be filtered.
"""
def __init__(
self,
mass: List[float],
dtype: torch.dtype,
device: torch.device,
filter_value: float = -math.inf,
min_tokens_to_keep: int = 1,
):
self.mass = mass
self.mass_tensor = torch.tensor(mass, dtype=dtype, device=device).unsqueeze(1)
# 1 is a special value that disables typical_p warping for this member of the batch
disabled = [x == 1.0 for x in mass]
if any(disabled):
self.disabled_mask = torch.tensor(disabled, dtype=torch.bool, device=device)
else:
self.disabled_mask = None
self.filter_value = filter_value
self.min_tokens_to_keep = min_tokens_to_keep
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
# calculate entropy
normalized = torch.nn.functional.log_softmax(scores, dim=-1)
p = torch.exp(normalized)
ent = -(normalized * p).nansum(-1, keepdim=True)
# shift and sort
shifted_scores = torch.abs((-normalized) - ent)
sorted_scores, sorted_indices = torch.sort(shifted_scores, descending=False)
sorted_logits = scores.gather(-1, sorted_indices)
probs = sorted_logits.softmax(dim=-1)
# This is way faster for some reason
for i in range(probs.shape[0]):
probs[i] = probs[i].cumsum(dim=-1)
# Remove tokens with cumulative mass above the threshold
last_ind = (probs < self.mass_tensor).sum(dim=1)
last_ind[last_ind < 0] = 0
if self.disabled_mask is not None:
last_ind.masked_fill_(self.disabled_mask, scores.shape[-1] - 1)
sorted_indices_to_remove = sorted_scores > sorted_scores.gather(
1, last_ind.view(-1, 1)
)
if self.min_tokens_to_keep > 1:
# Keep at least min_tokens_to_keep (set to min_tokens_to_keep-1 because we add the first one below)
sorted_indices_to_remove[..., : self.min_tokens_to_keep] = 0
indices_to_remove = sorted_indices_to_remove.scatter(
1, sorted_indices, sorted_indices_to_remove
)
warped_scores = scores.masked_fill_(indices_to_remove, self.filter_value)
return warped_scores
def filter(self, indices):
self.mass = [self.mass[i] for i in indices]
disabled = [x == 1.0 for x in self.mass]
if not all(disabled):
self.mass_tensor = self.mass_tensor[indices]
if self.disabled_mask is not None:
self.disabled_mask = (
self.disabled_mask[indices] if any(disabled) else None
)
return self
return None
class HeterogeneousProcessorWrapper(LogitsProcessor):
r"""
A wrapper for logit warpers or processors without heterogeneous parameter support.
Args:
processors (`Dict[int, Union[LogitsProcessor, LogitsWarper]]`):
A mapping of sample indices to logit warpers or processors, to be run sequentially.
"""
def __init__(
self,
processors: Dict[int, Union[LogitsProcessor, LogitsWarper]],
):
self.processors = processors
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor) -> torch.Tensor:
for i, processor in self.processors.items():
scores[i : i + 1] = processor(input_ids[i : i + 1], scores[i : i + 1])
return scores
def filter(self, indices):
new_processors = {}
for i, idx in enumerate(indices):
if idx in self.processors:
new_processors[i] = self.processors[idx]
if new_processors:
self.processors = new_processors
return self
return None
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/peft.py | import os
import json
from loguru import logger
import torch
from transformers import AutoTokenizer
from peft import AutoPeftModelForCausalLM, AutoPeftModelForSeq2SeqLM
def download_and_unload_peft(model_id, revision, trust_remote_code):
torch_dtype = torch.float16
logger.info("Peft model detected.")
logger.info("Loading the model it might take a while without feedback")
try:
model = AutoPeftModelForCausalLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=torch_dtype,
trust_remote_code=trust_remote_code,
low_cpu_mem_usage=True,
)
except Exception:
model = AutoPeftModelForSeq2SeqLM.from_pretrained(
model_id,
revision=revision,
torch_dtype=torch_dtype,
trust_remote_code=trust_remote_code,
low_cpu_mem_usage=True,
)
logger.info(f"Loaded.")
logger.info(f"Merging the lora weights.")
base_model_id = model.peft_config["default"].base_model_name_or_path
model = model.merge_and_unload()
os.makedirs(model_id, exist_ok=True)
cache_dir = model_id
logger.info(f"Saving the newly created merged model to {cache_dir}")
tokenizer = AutoTokenizer.from_pretrained(base_model_id)
model.save_pretrained(cache_dir, safe_serialization=True)
model.config.save_pretrained(cache_dir)
tokenizer.save_pretrained(cache_dir)
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/tokens.py | import re
import torch
from transformers import (
RepetitionPenaltyLogitsProcessor,
PreTrainedTokenizerBase,
)
from typing import List, Tuple, Optional
from text_generation_server.pb import generate_pb2
from text_generation_server.pb.generate_pb2 import FinishReason
from text_generation_server.utils.watermark import WatermarkLogitsProcessor
from text_generation_server.utils.logits_process import (
static_warper,
HeterogeneousRepetitionPenaltyLogitsProcessor,
HeterogeneousTemperatureLogitsWarper,
HeterogeneousTopKLogitsWarper,
HeterogeneousTopPLogitsWarper,
HeterogeneousTypicalLogitsWarper,
HeterogeneousProcessorWrapper,
)
class NextTokenChooser:
def __init__(
self,
watermark=False,
temperature=1.0,
repetition_penalty=1.0,
top_k=None,
top_p=None,
typical_p=None,
do_sample=False,
seed=0,
device="cpu",
):
self.watermark_processor = (
WatermarkLogitsProcessor(device=device) if watermark else None
)
self.repetition_processor = (
RepetitionPenaltyLogitsProcessor(penalty=repetition_penalty)
if repetition_penalty
else None
)
has_warpers = (
(temperature is not None and temperature != 1.0)
or (top_k is not None and top_k != 0)
or (top_p is not None and top_p < 1.0)
or (typical_p is not None and typical_p < 1.0)
)
if has_warpers:
self.static_warper = static_warper(
temperature=temperature, top_k=top_k, top_p=top_p, typical_p=typical_p
)
else:
self.static_warper = None
sampling = do_sample or has_warpers
self.choice = Sampling(seed, device) if sampling else Greedy()
def __call__(self, input_ids, scores):
if self.watermark_processor is not None:
scores = self.watermark_processor(input_ids, scores)
if self.repetition_processor is not None:
scores = self.repetition_processor(input_ids, scores)
if self.static_warper is None:
next_logprob = torch.log_softmax(scores, -1)
else:
scores, next_logprob = self.static_warper(scores)
next_id = self.choice(scores[-1]).view(1, 1)
return next_id, next_logprob
@classmethod
def from_pb(
cls,
pb: generate_pb2.NextTokenChooserParameters,
device: torch.device,
) -> "NextTokenChooser":
return NextTokenChooser(
watermark=pb.watermark,
temperature=pb.temperature,
repetition_penalty=pb.repetition_penalty,
top_k=pb.top_k,
top_p=pb.top_p,
typical_p=pb.typical_p,
do_sample=pb.do_sample,
seed=pb.seed,
device=device,
)
class StopSequenceCriteria:
def __init__(self, stop_sequence: str):
stop_sequence = re.escape(stop_sequence)
self.regex = re.compile(f".*{stop_sequence}$")
def __call__(self, output: str) -> bool:
if self.regex.findall(output):
return True
return False
class StoppingCriteria:
def __init__(
self,
eos_token_id: int,
stop_sequence_criterias: List[StopSequenceCriteria],
max_new_tokens: int = 20,
ignore_eos_token: bool = False,
):
self.eos_token_id = eos_token_id
self.stop_sequence_criterias = stop_sequence_criterias
self.max_new_tokens = max_new_tokens
self.current_tokens = 0
self.current_output = ""
self.ignore_eos_token = ignore_eos_token
def __call__(self, last_token: int, last_output: str) -> Tuple[bool, Optional[str]]:
self.current_tokens += 1
if self.current_tokens >= self.max_new_tokens:
return True, FinishReason.FINISH_REASON_LENGTH
if not self.ignore_eos_token and last_token == self.eos_token_id:
return True, FinishReason.FINISH_REASON_EOS_TOKEN
self.current_output += last_output
for stop_sequence_criteria in self.stop_sequence_criterias:
if stop_sequence_criteria(self.current_output):
return True, FinishReason.FINISH_REASON_STOP_SEQUENCE
return False, None
@classmethod
def from_pb(
cls,
pb: generate_pb2.StoppingCriteriaParameters,
tokenizer: PreTrainedTokenizerBase,
) -> "StoppingCriteria":
stop_sequence_criterias = [
StopSequenceCriteria(sequence) for sequence in pb.stop_sequences
]
return StoppingCriteria(
tokenizer.eos_token_id,
stop_sequence_criterias,
pb.max_new_tokens,
pb.ignore_eos_token,
)
class HeterogeneousNextTokenChooser:
def __init__(
self,
dtype: torch.dtype,
device: torch.device,
watermark: List[bool],
temperature: List[float],
repetition_penalty: List[float],
top_k: List[int],
top_p: List[float],
typical_p: List[float],
do_sample: List[bool],
seeds: List[int],
):
warpers = []
self.watermark_processor = (
HeterogeneousProcessorWrapper(
{
i: WatermarkLogitsProcessor(device=device)
for i, do_watermark in enumerate(watermark)
if do_watermark
}
)
if any(watermark)
else None
)
self.repetition_processor = (
HeterogeneousRepetitionPenaltyLogitsProcessor(
repetition_penalty, dtype, device
)
if any([x != 1.0 for x in repetition_penalty])
else None
)
if any([x != 1.0 for x in temperature]):
do_sample = [
sample or x != 1.0 for x, sample in zip(temperature, do_sample)
]
warpers.append(
HeterogeneousTemperatureLogitsWarper(temperature, dtype, device)
)
if any([x != 0 for x in top_k]):
do_sample = [sample or x != 0 for x, sample in zip(top_k, do_sample)]
warpers.append(HeterogeneousTopKLogitsWarper(top_k, device))
if any([x < 1.0 for x in top_p]):
do_sample = [sample or x < 1.0 for x, sample in zip(top_p, do_sample)]
warpers.append(HeterogeneousTopPLogitsWarper(top_p, dtype, device))
if any([x < 1.0 for x in typical_p]):
do_sample = [sample or x < 1.0 for x, sample in zip(typical_p, do_sample)]
warpers.append(HeterogeneousTypicalLogitsWarper(typical_p, dtype, device))
self.warpers = warpers
if any(do_sample):
self.choice = HeterogeneousSampling(do_sample, seeds, device)
else:
self.choice = Greedy()
self.seeds = seeds
self.do_sample = do_sample
self.dtype = dtype
self.device = device
def __call__(self, input_ids: torch.Tensor, scores: torch.Tensor):
if self.watermark_processor is not None:
scores = self.watermark_processor(input_ids, scores)
if self.repetition_processor is not None:
scores = self.repetition_processor(input_ids, scores)
for warper in self.warpers:
scores = warper(input_ids, scores)
next_ids = self.choice(scores)
next_logprobs = torch.gather(
torch.log_softmax(scores, -1), 1, next_ids.view(-1, 1)
).view(-1)
return next_ids, next_logprobs
def filter(self, indices):
if self.watermark_processor is not None:
self.watermark_processor = self.watermark_processor.filter(indices)
if self.repetition_processor is not None:
self.repetition_processor = self.repetition_processor.filter(indices)
filtered_warpers = []
for warper in self.warpers:
filtered_warper = warper.filter(indices)
if filtered_warper is not None:
filtered_warpers.append(filtered_warper)
self.warpers = filtered_warpers
self.seeds = [self.seeds[i] for i in indices]
self.do_sample = [self.do_sample[i] for i in indices]
if any(self.do_sample):
self.choice.filter(indices)
else:
self.choice = Greedy()
return self
@classmethod
def from_pb(
cls,
pb: List[generate_pb2.NextTokenChooserParameters],
dtype: torch.dtype,
device: torch.device,
) -> "HeterogeneousNextTokenChooser":
return HeterogeneousNextTokenChooser(
watermark=[pb_.watermark for pb_ in pb],
temperature=[pb_.temperature for pb_ in pb],
repetition_penalty=[pb_.repetition_penalty for pb_ in pb],
top_k=[pb_.top_k for pb_ in pb],
top_p=[pb_.top_p for pb_ in pb],
typical_p=[pb_.typical_p for pb_ in pb],
do_sample=[pb_.do_sample for pb_ in pb],
seeds=[pb_.seed for pb_ in pb],
device=device,
dtype=dtype,
)
class Sampling:
def __init__(self, seed: int, device: str = "cpu"):
self.generator = torch.Generator(device)
self.generator.manual_seed(seed)
self.seed = seed
def __call__(self, logits):
probs = torch.nn.functional.softmax(logits, -1)
# Avoid GPU<->CPU sync done by torch multinomial
# See: https://github.com/pytorch/pytorch/blob/925a3788ec5c06db62ca732a0e9425a26a00916f/aten/src/ATen/native/Distributions.cpp#L631-L637
q = torch.empty_like(probs).exponential_(1, generator=self.generator)
return probs.div_(q).argmax()
class Greedy:
def __call__(self, logits):
return logits.argmax(dim=-1)
class HeterogeneousSampling:
r"""
Mixed greedy and probabilistic sampling. Compute both and pick the right one for each sample.
"""
def __init__(self, do_sample: List[bool], seeds: List[int], device: torch.device):
self.seeds = seeds
self.greedy_indices = []
self.sampling_mapping = {}
for i, (sample, seed) in enumerate(zip(do_sample, seeds)):
if sample:
self.sampling_mapping[i] = Sampling(seed, device)
else:
self.greedy_indices.append(i)
self.greedy = Greedy()
def __call__(self, logits):
out = torch.empty(logits.shape[0], dtype=torch.int64, device=logits.device)
if self.greedy_indices:
# Computing for all indices is faster than slicing
torch.argmax(logits, -1, out=out)
for i, sampling in self.sampling_mapping.items():
out[i] = sampling(logits[i])
return out
def filter(self, indices):
new_greedy_indices = []
new_sampling_mapping = {}
for i, idx in enumerate(indices):
if idx in self.sampling_mapping:
new_sampling_mapping[i] = self.sampling_mapping[idx]
else:
new_greedy_indices.append(i)
self.greedy_indices = new_greedy_indices
self.sampling_mapping = new_sampling_mapping
return self
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/watermark.py | # coding=utf-8
# Copyright 2023 Authors of "A Watermark for Large Language Models"
# available at https://arxiv.org/abs/2301.10226
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import torch
from transformers import LogitsProcessor
from typing import List, Union
GAMMA = os.getenv("WATERMARK_GAMMA", 0.5)
DELTA = os.getenv("WATERMARK_DELTA", 2.0)
class WatermarkLogitsProcessor(LogitsProcessor):
def __init__(
self,
gamma: float = GAMMA,
delta: float = DELTA,
hash_key: int = 15485863, # just a large prime number to create a rng seed with sufficient bit width
device: str = "cpu",
):
# watermarking parameters
self.gamma = gamma
self.delta = delta
self.rng = torch.Generator(device=device)
self.hash_key = hash_key
def _seed_rng(self, input_ids: Union[List[int], torch.LongTensor]):
if isinstance(input_ids, list):
assert (
len(input_ids) >= 1
), "requires at least a 1 token prefix sequence to seed rng"
prev_token = input_ids[-1]
else:
assert len(input_ids) == 1
input_ids = input_ids[0]
assert (
input_ids.shape[-1] >= 1
), "requires at least a 1 token prefix sequence to seed rng"
prev_token = input_ids[-1].item()
self.rng.manual_seed(self.hash_key * prev_token)
def _get_greenlist_ids(
self,
input_ids: Union[List[int], torch.LongTensor],
max_value: int,
device: torch.device,
) -> List[int]:
# seed the rng using the previous tokens/prefix
self._seed_rng(input_ids)
greenlist_size = int(max_value * self.gamma)
vocab_permutation = torch.randperm(max_value, device=device, generator=self.rng)
greenlist_ids = vocab_permutation[:greenlist_size]
return greenlist_ids
@staticmethod
def _calc_greenlist_mask(
scores: torch.FloatTensor, greenlist_token_ids
) -> torch.BoolTensor:
green_tokens_mask = torch.zeros_like(scores)
green_tokens_mask[-1, greenlist_token_ids] = 1
final_mask = green_tokens_mask.bool()
return final_mask
@staticmethod
def _bias_greenlist_logits(
scores: torch.Tensor, greenlist_mask: torch.Tensor, greenlist_bias: float
) -> torch.Tensor:
scores[greenlist_mask] = scores[greenlist_mask] + greenlist_bias
return scores
def __call__(
self, input_ids: Union[List[int], torch.LongTensor], scores: torch.FloatTensor
) -> torch.FloatTensor:
greenlist_ids = self._get_greenlist_ids(
input_ids, scores.shape[-1], scores.device
)
green_tokens_mask = self._calc_greenlist_mask(
scores=scores, greenlist_token_ids=greenlist_ids
)
scores = self._bias_greenlist_logits(
scores=scores, greenlist_mask=green_tokens_mask, greenlist_bias=self.delta
)
return scores
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server | hf_public_repos/text-generation-inference/server/text_generation_server/utils/weights.py | import os
from pathlib import Path
from typing import List, Dict, Optional, Tuple
from safetensors import safe_open, SafetensorError
import torch
from loguru import logger
from huggingface_hub import hf_hub_download
import json
class Weights:
def __init__(
self,
filenames: List[Path],
device,
dtype,
process_group,
aliases: Optional[Dict[str, List[str]]] = None,
):
routing = {}
for filename in filenames:
with safe_open(filename, framework="pytorch") as f:
for k in f.keys():
if k in routing:
raise RuntimeError(
f"Key {k} was found in multiple files: {filename} and {routing[k]}"
)
routing[k] = filename
if aliases is None:
aliases = {}
self.aliases = aliases
self.routing = routing
self.device = device
self.dtype = dtype
self.process_group = process_group
self._handles = {}
def _get_handle(self, filename):
if filename not in self._handles:
f = safe_open(filename, framework="pytorch")
self._handles[filename] = f
return self._handles[filename]
def get_filename(self, tensor_name: str) -> (str, str):
filename = self.routing.get(tensor_name, None)
if filename is None:
aliases = self.aliases.get(tensor_name, [])
for alias in aliases:
filename = self.routing.get(alias, None)
if filename is not None:
return str(filename), alias
raise RuntimeError(f"weight {tensor_name} does not exist")
return str(filename), tensor_name
def _get_slice(self, tensor_name: str):
filename, tensor_name = self.get_filename(tensor_name)
f = self._get_handle(filename)
slice_ = f.get_slice(tensor_name)
return slice_
def get_shape(self, tensor_name: str):
return self._get_slice(tensor_name).get_shape()
def get_tensor(self, tensor_name: str):
filename, tensor_name = self.get_filename(tensor_name)
f = self._get_handle(filename)
tensor = f.get_tensor(tensor_name)
# Special case for gptq which shouldn't convert
# u4 which are disguised as int32
if tensor.dtype not in [torch.int32, torch.int64]:
tensor = tensor.to(dtype=self.dtype)
tensor = tensor.to(device=self.device)
return tensor
def get_partial_sharded(self, tensor_name: str, dim: int):
filename, tensor_name = self.get_filename(tensor_name)
world_size = self.process_group.size()
rank = self.process_group.rank()
f = self._get_handle(filename)
slice_ = f.get_slice(tensor_name)
size = slice_.get_shape()[dim]
block_size = size // world_size
start = rank * block_size
stop = (rank + 1) * block_size
if dim == 0:
tensor = slice_[start:stop]
elif dim == 1:
tensor = slice_[:, start:stop]
else:
raise NotImplementedError("Let's make that generic when needed")
# Special case for gptq which shouldn't convert
# u4 which are disguised as int32
if tensor.dtype != torch.int32:
tensor = tensor.to(dtype=self.dtype)
tensor = tensor.to(device=self.device)
return tensor
def get_sharded(self, tensor_name: str, dim: int):
filename, tensor_name = self.get_filename(tensor_name)
f = self._get_handle(filename)
slice_ = f.get_slice(tensor_name)
world_size = self.process_group.size()
size = slice_.get_shape()[dim]
assert (
size % world_size == 0
), f"The choosen size {size} is not compatible with sharding on {world_size} shards"
return self.get_partial_sharded(tensor_name, dim)
def get_multi_weights_col(self, prefixes: List[str], quantize: str, dim: int):
if quantize == "gptq":
try:
qweight = torch.cat(
[self.get_sharded(f"{p}.qweight", dim=1) for p in prefixes], dim=1
)
except RuntimeError:
raise RuntimeError(
"Cannot load `gptq` weight, make sure the model is already quantized, or quantize it with `text-generation-server quantize ORIGINAL_MODEL_ID NEW_MODEL_ID`"
)
qzeros = torch.cat(
[self.get_sharded(f"{p}.qzeros", dim=1) for p in prefixes], dim=1
)
scales = torch.cat(
[self.get_sharded(f"{p}.scales", dim=1) for p in prefixes], dim=1
)
w = [self.get_tensor(f"{p}.g_idx") for p in prefixes]
for w2 in w[1:]:
torch.testing.assert_close(w2, w[0])
g_idx = w[0]
bits, groupsize = self._get_gptq_params()
weight = (qweight, qzeros, scales, g_idx, bits, groupsize, False)
else:
w = [self.get_sharded(f"{p}.weight", dim=0) for p in prefixes]
weight = torch.cat(w, dim=dim)
return weight
def get_multi_weights_row(self, prefix: str, quantize: str):
if quantize == "gptq":
use_exllama = True
bits, groupsize = self._get_gptq_params()
if bits != 4:
use_exllama = False
if self.process_group.size() > 1:
g_idx = self.get_tensor(f"{prefix}.g_idx")
if g_idx is not None:
if (
not torch.equal(
g_idx.cpu(),
torch.tensor(
[i // groupsize for i in range(g_idx.shape[0])],
dtype=torch.int32,
),
)
and not (g_idx == 0).all()
):
# Exllama implementation does not support row tensor parallelism with act-order, as
# it would require to reorder input activations that are split unto several GPUs
use_exllama = False
try:
qweight = self.get_sharded(f"{prefix}.qweight", dim=0)
except RuntimeError:
raise RuntimeError(
"Cannot load `gptq` weight, make sure the model is already quantized, or quantize it with `text-generation-server quantize ORIGINAL_MODEL_ID NEW_MODEL_ID`"
)
from text_generation_server.utils.layers import HAS_EXLLAMA
if use_exllama:
if not HAS_EXLLAMA:
logger.warning(
"Exllama GPTQ cuda kernels (which are faster) could have been used, but are not currently installed, try using BUILD_EXTENSIONS=True"
)
use_exllama = False
else:
logger.info("Using exllama kernels")
if use_exllama:
if groupsize >= 0:
# Exllama reorders the weights in advance and the activations on the fly, thus
# the scales and zero-points do not need to be reordered.
qzeros = self.get_sharded(f"{prefix}.qzeros", dim=0)
scales = self.get_sharded(f"{prefix}.scales", dim=0)
else:
qzeros = self.get_tensor(f"{prefix}.qzeros")
scales = self.get_tensor(f"{prefix}.scales")
# For tp > 1, at this point we know we do not use act-order
if self.process_group.size() == 1:
g_idx = self.get_tensor(f"{prefix}.g_idx")
else:
g_idx = None
else:
# The triton kernel reorders the scales/zero points instead of the weight/activation.
# Thus, each rank needs the full qzeros/scales.
qzeros = self.get_tensor(f"{prefix}.qzeros")
scales = self.get_tensor(f"{prefix}.scales")
g_idx = self.get_sharded(f"{prefix}.g_idx", dim=0)
weight = (qweight, qzeros, scales, g_idx, bits, groupsize, use_exllama)
else:
weight = self.get_sharded(f"{prefix}.weight", dim=1)
return weight
def _get_gptq_params(self) -> Tuple[int, int]:
try:
bits = self.get_tensor("gptq_bits").item()
groupsize = self.get_tensor("gptq_groupsize").item()
except (SafetensorError, RuntimeError) as e:
try:
bits = self.gptq_bits
groupsize = self.gptq_groupsize
except Exception:
raise e
return bits, groupsize
def _set_gptq_params(self, model_id):
filename = "quantize_config.json"
try:
if os.path.exists(os.path.join(model_id, filename)):
filename = os.path.join(model_id, filename)
else:
filename = hf_hub_download(model_id, filename=filename)
with open(filename, "r") as f:
data = json.load(f)
self.gptq_bits = data["bits"]
self.gptq_groupsize = data["group_size"]
except Exception:
pass
| 0 |
hf_public_repos/text-generation-inference/server/text_generation_server/utils | hf_public_repos/text-generation-inference/server/text_generation_server/utils/gptq/custom_autotune.py | # https://github.com/fpgaminer/GPTQ-triton
"""
Mostly the same as the autotuner in Triton, but with a few changes like using 40 runs instead of 100.
"""
import builtins
import math
import time
from typing import Dict
import triton
class Autotuner(triton.KernelInterface):
def __init__(
self,
fn,
arg_names,
configs,
key,
reset_to_zero,
prune_configs_by: Dict = None,
nearest_power_of_two: bool = False,
):
"""
:param prune_configs_by: a dict of functions that are used to prune configs, fields:
'perf_model': performance model used to predicate running time with different configs, returns running time
'top_k': number of configs to bench
'prune_num_stages_by'(optional): a function used to prune num_stages. It take configs:List[Config] as its input, and returns pruned configs.
'nearest_power_of_two'(optional): whether to round key arguments to the nearest power of two when caching tuning results
"""
if not configs:
self.configs = [triton.Config({}, num_warps=4, num_stages=2)]
else:
self.configs = configs
self.key_idx = [arg_names.index(k) for k in key]
self.nearest_power_of_two = nearest_power_of_two
self.cache = {}
# hook to reset all required tensor to zeros before relaunching a kernel
self.hook = lambda args: 0
if reset_to_zero is not None:
self.reset_idx = [arg_names.index(k) for k in reset_to_zero]
def _hook(args):
for i in self.reset_idx:
args[i].zero_()
self.hook = _hook
self.arg_names = arg_names
# prune configs
if prune_configs_by:
perf_model, top_k = (
prune_configs_by["perf_model"],
prune_configs_by["top_k"],
)
if "early_config_prune" in prune_configs_by:
early_config_prune = prune_configs_by["early_config_prune"]
else:
perf_model, top_k, early_config_prune = None, None, None
self.perf_model, self.configs_top_k = perf_model, top_k
self.early_config_prune = early_config_prune
self.fn = fn
def _bench(self, *args, config, **meta):
# check for conflicts, i.e. meta-parameters both provided
# as kwargs and by the autotuner
conflicts = meta.keys() & config.kwargs.keys()
if conflicts:
raise ValueError(
f"Conflicting meta-parameters: {', '.join(conflicts)}."
" Make sure that you don't re-define auto-tuned symbols."
)
# augment meta-parameters with tunable ones
current = dict(meta, **config.kwargs)
def kernel_call():
if config.pre_hook:
config.pre_hook(self.nargs)
self.hook(args)
self.fn.run(
*args,
num_warps=config.num_warps,
num_stages=config.num_stages,
**current,
)
try:
# In testings using only 40 reps seems to be close enough and it appears to be what PyTorch uses
# PyTorch also sets fast_flush to True, but I didn't see any speedup so I'll leave the default
return triton.testing.do_bench(
kernel_call, percentiles=(0.5, 0.2, 0.8), rep=40
)
except triton.compiler.OutOfResources:
return (float("inf"), float("inf"), float("inf"))
def run(self, *args, **kwargs):
self.nargs = dict(zip(self.arg_names, args))
if len(self.configs) > 1:
key = tuple(args[i] for i in self.key_idx)
# This reduces the amount of autotuning by rounding the keys to the nearest power of two
# In my testing this gives decent results, and greatly reduces the amount of tuning required
if self.nearest_power_of_two:
key = tuple([2 ** int(math.log2(x) + 0.5) for x in key])
if key not in self.cache:
# prune configs
pruned_configs = self.prune_configs(kwargs)
bench_start = time.time()
timings = {
config: self._bench(*args, config=config, **kwargs)
for config in pruned_configs
}
bench_end = time.time()
self.bench_time = bench_end - bench_start
self.cache[key] = builtins.min(timings, key=timings.get)
self.hook(args)
self.configs_timings = timings
config = self.cache[key]
else:
config = self.configs[0]
self.best_config = config
if config.pre_hook is not None:
config.pre_hook(self.nargs)
return self.fn.run(
*args,
num_warps=config.num_warps,
num_stages=config.num_stages,
**kwargs,
**config.kwargs,
)
def prune_configs(self, kwargs):
pruned_configs = self.configs
if self.early_config_prune:
pruned_configs = self.early_config_prune(self.configs, self.nargs)
if self.perf_model:
top_k = self.configs_top_k
if isinstance(top_k, float) and top_k <= 1.0:
top_k = int(len(self.configs) * top_k)
if len(pruned_configs) > top_k:
est_timing = {
config: self.perf_model(
**self.nargs,
**kwargs,
**config.kwargs,
num_stages=config.num_stages,
num_warps=config.num_warps,
)
for config in pruned_configs
}
pruned_configs = sorted(est_timing.keys(), key=lambda x: est_timing[x])[
:top_k
]
return pruned_configs
def warmup(self, *args, **kwargs):
self.nargs = dict(zip(self.arg_names, args))
for config in self.prune_configs(kwargs):
self.fn.warmup(
*args,
num_warps=config.num_warps,
num_stages=config.num_stages,
**kwargs,
**config.kwargs,
)
self.nargs = None
def autotune(
configs, key, prune_configs_by=None, reset_to_zero=None, nearest_power_of_two=False
):
"""
Decorator for auto-tuning a :code:`triton.jit`'d function.
.. highlight:: python
.. code-block:: python
@triton.autotune(configs=[
triton.Config(meta={'BLOCK_SIZE': 128}, num_warps=4),
triton.Config(meta={'BLOCK_SIZE': 1024}, num_warps=8),
],
key=['x_size'] # the two above configs will be evaluated anytime
# the value of x_size changes
)
@triton.jit
def kernel(x_ptr, x_size, **META):
BLOCK_SIZE = META['BLOCK_SIZE']
:note: When all the configurations are evaluated, the kernel will run multiple time.
This means that whatever value the kernel updates will be updated multiple times.
To avoid this undesired behavior, you can use the `reset_to_zero` argument, which
reset the value of the provided tensor to `zero` before running any configuration.
:param configs: a list of :code:`triton.Config` objects
:type configs: list[triton.Config]
:param key: a list of argument names whose change in value will trigger the evaluation of all provided configs.
:type key: list[str]
:param prune_configs_by: a dict of functions that are used to prune configs, fields:
'perf_model': performance model used to predicate running time with different configs, returns running time
'top_k': number of configs to bench
'early_config_prune'(optional): a function used to do early prune (eg, num_stages). It take configs:List[Config] as its input, and returns pruned configs.
:param reset_to_zero: a list of argument names whose value will be reset to zero before evaluating any configs.
:type reset_to_zero: list[str]
"""
def decorator(fn):
return Autotuner(
fn,
fn.arg_names,
configs,
key,
reset_to_zero,
prune_configs_by,
nearest_power_of_two,
)
return decorator
def matmul248_kernel_config_pruner(configs, nargs):
"""
The main purpose of this function is to shrink BLOCK_SIZE_* when the corresponding dimension is smaller.
"""
m = max(2 ** int(math.ceil(math.log2(nargs["M"]))), 16)
n = max(2 ** int(math.ceil(math.log2(nargs["N"]))), 16)
k = max(2 ** int(math.ceil(math.log2(nargs["K"]))), 16)
used = set()
for config in configs:
block_size_m = min(m, config.kwargs["BLOCK_SIZE_M"])
block_size_n = min(n, config.kwargs["BLOCK_SIZE_N"])
block_size_k = min(k, config.kwargs["BLOCK_SIZE_K"])
group_size_m = config.kwargs["GROUP_SIZE_M"]
if (
block_size_m,
block_size_n,
block_size_k,
group_size_m,
config.num_stages,
config.num_warps,
) in used:
continue
used.add(
(
block_size_m,
block_size_n,
block_size_k,
group_size_m,
config.num_stages,
config.num_warps,
)
)
yield triton.Config(
{
"BLOCK_SIZE_M": block_size_m,
"BLOCK_SIZE_N": block_size_n,
"BLOCK_SIZE_K": block_size_k,
"GROUP_SIZE_M": group_size_m,
},
num_stages=config.num_stages,
num_warps=config.num_warps,
)
| 0 |