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| import json | |
| import logging | |
| import math | |
| import sys | |
| import threading | |
| import time | |
| import traceback | |
| from pathlib import Path | |
| import gradio as gr | |
| import torch | |
| import transformers | |
| from datasets import Dataset, load_dataset | |
| from peft import (LoraConfig, get_peft_model, prepare_model_for_int8_training, | |
| set_peft_model_state_dict) | |
| from modules import shared, ui, utils | |
| from modules.evaluate import calculate_perplexity, generate_markdown_table, save_past_evaluations | |
| # This mapping is from a very recent commit, not yet released. | |
| # If not available, default to a backup map for some common model types. | |
| try: | |
| from peft.utils.other import \ | |
| TRANSFORMERS_MODELS_TO_LORA_TARGET_MODULES_MAPPING as \ | |
| model_to_lora_modules | |
| from transformers.models.auto.modeling_auto import MODEL_FOR_CAUSAL_LM_MAPPING_NAMES | |
| MODEL_CLASSES = {v: k for k, v in MODEL_FOR_CAUSAL_LM_MAPPING_NAMES} | |
| except: | |
| standard_modules = ["q_proj", "v_proj"] | |
| model_to_lora_modules = {"llama": standard_modules, "opt": standard_modules, "gptj": standard_modules, "gpt_neox": ["query_key_value"]} | |
| MODEL_CLASSES = { | |
| "LlamaForCausalLM": "llama", | |
| "OPTForCausalLM": "opt", | |
| "GPTJForCausalLM": "gptj", | |
| "GPTNeoXForCausalLM": "gpt_neox" | |
| } | |
| WANT_INTERRUPT = False | |
| PARAMETERS = ["lora_name", "always_override", "save_steps", "micro_batch_size", "batch_size", "epochs", "learning_rate", "lr_scheduler_type", "lora_rank", "lora_alpha", "lora_dropout", "cutoff_len", "dataset", "eval_dataset", "format", "eval_steps", "raw_text_file", "overlap_len", "newline_favor_len", "higher_rank_limit", "warmup_steps", "optimizer"] | |
| def create_train_interface(): | |
| with gr.Tab('Train LoRA', elem_id='lora-train-tab'): | |
| gr.Markdown("Confused? [[Click here for a guide]](https://github.com/oobabooga/text-generation-webui/blob/main/docs/Training-LoRAs.md)") | |
| with gr.Row(): | |
| lora_name = gr.Textbox(label='Name', info='The name of your new LoRA file') | |
| always_override = gr.Checkbox(label='Override Existing Files', value=False, info='If the name given is the same as an existing file, checking this will replace that file. Leaving unchecked will load that file and continue from it (must use the same rank value as the original had).') | |
| save_steps = gr.Number(label='Save every n steps', value=0, info='If above 0, a checkpoint of the LoRA will be saved every time this many steps pass.') | |
| with gr.Row(): | |
| copy_from = gr.Dropdown(label='Copy parameters from', value='None', choices=utils.get_available_loras()) | |
| ui.create_refresh_button(copy_from, lambda: None, lambda: {'choices': utils.get_available_loras()}, 'refresh-button') | |
| with gr.Row(): | |
| # TODO: Implement multi-device support. | |
| micro_batch_size = gr.Slider(label='Micro Batch Size', value=4, minimum=1, maximum=128, step=1, info='Per-device batch size (NOTE: multiple devices not yet implemented). Increasing this will increase VRAM usage.') | |
| batch_size = gr.Slider(label='Batch Size', value=128, minimum=0, maximum=1024, step=4, info='Global batch size. The two batch sizes together determine gradient accumulation (gradientAccum = batch / microBatch). Higher gradient accum values lead to better quality training.') | |
| with gr.Row(): | |
| epochs = gr.Number(label='Epochs', value=3, info='Number of times every entry in the dataset should be fed into training. So 1 means feed each item in once, 5 means feed it in five times, etc.') | |
| learning_rate = gr.Textbox(label='Learning Rate', value='3e-4', info='Learning rate, in scientific notation. 3e-4 is a good starting base point. 1e-2 is extremely high, 1e-6 is extremely low.') | |
| lr_scheduler_type = gr.Dropdown(label='LR Scheduler', value='linear', choices=['linear', 'constant', 'constant_with_warmup', 'cosine', 'cosine_with_restarts', 'polynomial', 'inverse_sqrt'], info='Learning rate scheduler - defines how the learning rate changes over time. "Constant" means never change, "linear" means to go in a straight line from the learning rate down to 0, cosine follows a curve, etc.') | |
| # TODO: What is the actual maximum rank? Likely distinct per model. This might be better to somehow be on a log scale. | |
| lora_rank = gr.Slider(label='LoRA Rank', value=32, minimum=0, maximum=1024, step=4, info='LoRA Rank, or dimension count. Higher values produce a larger file with better control over the model\'s content. Smaller values produce a smaller file with less overall control. Small values like 4 or 8 are great for stylistic guidance, higher values like 128 or 256 are good for teaching content upgrades, extremely high values (1024+) are difficult to train but may improve fine-detail learning for large datasets. Higher ranks also require higher VRAM.') | |
| lora_alpha = gr.Slider(label='LoRA Alpha', value=64, minimum=0, maximum=2048, step=4, info='LoRA Alpha. This divided by the rank becomes the scaling of the LoRA. Higher means stronger. A good standard value is twice your Rank.') | |
| cutoff_len = gr.Slider(label='Cutoff Length', minimum=0, maximum=2048, value=256, step=32, info='Cutoff length for text input. Essentially, how long of a line of text to feed in at a time. Higher values require drastically more VRAM.') | |
| with gr.Tab(label='Formatted Dataset'): | |
| with gr.Row(): | |
| dataset = gr.Dropdown(choices=utils.get_datasets('training/datasets', 'json'), value='None', label='Dataset', info='The dataset file to use for training.') | |
| ui.create_refresh_button(dataset, lambda: None, lambda: {'choices': utils.get_datasets('training/datasets', 'json')}, 'refresh-button') | |
| eval_dataset = gr.Dropdown(choices=utils.get_datasets('training/datasets', 'json'), value='None', label='Evaluation Dataset', info='The (optional) dataset file used to evaluate the model after training.') | |
| ui.create_refresh_button(eval_dataset, lambda: None, lambda: {'choices': utils.get_datasets('training/datasets', 'json')}, 'refresh-button') | |
| format = gr.Dropdown(choices=utils.get_datasets('training/formats', 'json'), value='None', label='Data Format', info='The format file used to decide how to format the dataset input.') | |
| ui.create_refresh_button(format, lambda: None, lambda: {'choices': utils.get_datasets('training/formats', 'json')}, 'refresh-button') | |
| eval_steps = gr.Number(label='Evaluate every n steps', value=100, info='If an evaluation dataset is given, test it every time this many steps pass.') | |
| with gr.Tab(label="Raw text file"): | |
| with gr.Row(): | |
| raw_text_file = gr.Dropdown(choices=utils.get_datasets('training/datasets', 'txt'), value='None', label='Text file', info='The raw text file to use for training.') | |
| ui.create_refresh_button(raw_text_file, lambda: None, lambda: {'choices': utils.get_datasets('training/datasets', 'txt')}, 'refresh-button') | |
| with gr.Row(): | |
| overlap_len = gr.Slider(label='Overlap Length', minimum=0, maximum=512, value=128, step=16, info='Overlap length - ie how many tokens from the prior chunk of text to include into the next chunk. (The chunks themselves will be of a size determined by Cutoff Length below). Setting overlap to exactly half the cutoff length may be ideal.') | |
| newline_favor_len = gr.Slider(label='Prefer Newline Cut Length', minimum=0, maximum=512, value=128, step=16, info='Length (in characters, not tokens) of the maximum distance to shift an overlap cut by to ensure chunks cut at newlines. If too low, cuts may occur in the middle of lines.') | |
| with gr.Accordion(label='Advanced Options', open=False): | |
| lora_dropout = gr.Slider(label='LoRA Dropout', minimum=0.0, maximum=1.0, step=0.025, value=0.05, info='Percentage probability for dropout of LoRA layers. This can help reduce overfitting. Most users should leave at default.') | |
| warmup_steps = gr.Number(label='Warmup Steps', value=100, info='For this many steps at the start, the learning rate will be lower than normal. This helps the trainer prepare the model and precompute statistics to improve the quality of training after the start.') | |
| optimizer = gr.Dropdown(label='Optimizer', value='adamw_torch', choices=['adamw_hf', 'adamw_torch', 'adamw_torch_fused', 'adamw_torch_xla', 'adamw_apex_fused', 'adafactor', 'adamw_bnb_8bit', 'adamw_anyprecision', 'sgd', 'adagrad'], info='Different optimizer implementation options, for advanced users. Effects of different options are not well documented yet.') | |
| with gr.Row(): | |
| higher_rank_limit = gr.Checkbox(label='Enable higher ranks', value=False, info='If checked, changes Rank/Alpha slider above to go much higher. This will not work without a datacenter-class GPU.') | |
| with gr.Row(): | |
| start_button = gr.Button("Start LoRA Training") | |
| stop_button = gr.Button("Interrupt") | |
| output = gr.Markdown(value="Ready") | |
| with gr.Tab('Perplexity evaluation', elem_id='evaluate-tab'): | |
| with gr.Row(): | |
| with gr.Column(): | |
| models = gr.Dropdown(utils.get_available_models(), label='Models', multiselect=True) | |
| evaluate_text_file = gr.Dropdown(choices=['wikitext', 'ptb', 'ptb_new'] + utils.get_datasets('training/datasets', 'txt')[1:], value='wikitext', label='Input dataset', info='The raw text file on which the model will be evaluated. The first options are automatically downloaded: wikitext, ptb, and ptb_new. The next options are your local text files under training/datasets.') | |
| with gr.Row(): | |
| stride_length = gr.Slider(label='Stride', minimum=1, maximum=2048, value=512, step=1, info='Used to make the evaluation faster at the cost of accuracy. 1 = slowest but most accurate. 512 is a common value.') | |
| max_length = gr.Slider(label='max_length', minimum=0, maximum=8096, value=0, step=1, info='The context for each evaluation. If set to 0, the maximum context length for the model will be used.') | |
| with gr.Row(): | |
| start_current_evaluation = gr.Button("Evaluate loaded model") | |
| start_evaluation = gr.Button("Evaluate selected models") | |
| stop_evaluation = gr.Button("Interrupt") | |
| with gr.Column(): | |
| evaluation_log = gr.Markdown(value='') | |
| evaluation_table = gr.Dataframe(value=generate_markdown_table(), interactive=True) | |
| save_comments = gr.Button('Save comments') | |
| # Training events | |
| all_params = [lora_name, always_override, save_steps, micro_batch_size, batch_size, epochs, learning_rate, lr_scheduler_type, lora_rank, lora_alpha, lora_dropout, cutoff_len, dataset, eval_dataset, format, eval_steps, raw_text_file, overlap_len, newline_favor_len, higher_rank_limit, warmup_steps, optimizer] | |
| copy_from.change(do_copy_params, [copy_from] + all_params, all_params) | |
| start_button.click(do_train, all_params, output) | |
| stop_button.click(do_interrupt, None, None, queue=False) | |
| higher_rank_limit.change(change_rank_limit, [higher_rank_limit], [lora_rank, lora_alpha]) | |
| # Evaluation events. For some reason, the interrupt event | |
| # doesn't work with the .then() syntax, so I write them one | |
| # by one in this ugly but functional way. | |
| ev = start_evaluation.click(calculate_perplexity, [models, evaluate_text_file, stride_length, max_length], evaluation_log, show_progress=False) | |
| start_evaluation.click(generate_markdown_table, None, evaluation_table, show_progress=False) | |
| tmp = gr.State('') | |
| start_current_evaluation.click(lambda: ['current model'], None, tmp) | |
| ev_cur = start_current_evaluation.click(calculate_perplexity, [tmp, evaluate_text_file, stride_length, max_length], evaluation_log, show_progress=False) | |
| start_current_evaluation.click(generate_markdown_table, None, evaluation_table, show_progress=False) | |
| stop_evaluation.click(None, None, None, cancels=[ev, ev_cur], queue=False) | |
| save_comments.click( | |
| save_past_evaluations, evaluation_table, None).then( | |
| lambda: "Comments saved.", None, evaluation_log, show_progress=False) | |
| def do_interrupt(): | |
| global WANT_INTERRUPT | |
| WANT_INTERRUPT = True | |
| def do_copy_params(lora_name: str, *args): | |
| f_name = f"{shared.args.lora_dir}/{clean_path(None, lora_name)}/training_parameters.json" | |
| if Path(f_name).is_file(): | |
| with open(f_name, 'r', encoding='utf-8') as format_file: | |
| params: dict[str, str] = json.load(format_file) | |
| else: | |
| params = {} | |
| result = list() | |
| for i in range(0, len(PARAMETERS)): | |
| key = PARAMETERS[i] | |
| if key in params: | |
| result.append(params[key]) | |
| else: | |
| result.append(args[i]) | |
| return result | |
| def change_rank_limit(use_higher_ranks: bool): | |
| mult = 2 if use_higher_ranks else 1 | |
| return {"maximum": 1024 * mult, "__type__": "update"}, {"maximum": 2048 * mult, "__type__": "update"} | |
| def clean_path(base_path: str, path: str): | |
| """"Strips unusual symbols and forcibly builds a path as relative to the intended directory.""" | |
| # TODO: Probably could do with a security audit to guarantee there's no ways this can be bypassed to target an unwanted path. | |
| # Or swap it to a strict whitelist of [a-zA-Z_0-9] | |
| path = path.replace('\\', '/').replace('..', '_') | |
| if base_path is None: | |
| return path | |
| return f'{Path(base_path).absolute()}/{path}' | |
| def do_train(lora_name: str, always_override: bool, save_steps: int, micro_batch_size: int, batch_size: int, epochs: int, learning_rate: str, lr_scheduler_type: str, lora_rank: int, lora_alpha: int, lora_dropout: float, cutoff_len: int, dataset: str, eval_dataset: str, format: str, eval_steps: int, raw_text_file: str, overlap_len: int, newline_favor_len: int, higher_rank_limit: bool, warmup_steps: int, optimizer: str): | |
| if shared.args.monkey_patch: | |
| from monkeypatch.peft_tuners_lora_monkey_patch import \ | |
| replace_peft_model_with_gptq_lora_model | |
| replace_peft_model_with_gptq_lora_model() | |
| global WANT_INTERRUPT | |
| WANT_INTERRUPT = False | |
| # == Input validation / processing == | |
| yield "Prepping..." | |
| lora_file_path = clean_path(None, lora_name) | |
| if lora_file_path.strip() == '': | |
| yield "Missing or invalid LoRA file name input." | |
| return | |
| lora_file_path = f"{shared.args.lora_dir}/{lora_file_path}" | |
| actual_lr = float(learning_rate) | |
| model_type = type(shared.model).__name__ | |
| if model_type in MODEL_CLASSES: | |
| model_id = MODEL_CLASSES[model_type] | |
| else: | |
| model_id = "llama" | |
| if model_type == "PeftModelForCausalLM": | |
| if len(shared.args.lora_names) > 0: | |
| yield "You are trying to train a LoRA while you already have another LoRA loaded. This will work, but may have unexpected effects. *(Will continue anyway in 5 seconds, press `Interrupt` to stop.)*" | |
| logging.warning("Training LoRA over top of another LoRA. May have unexpected effects.") | |
| else: | |
| yield "Model ID not matched due to LoRA loading. Consider reloading base model. *(Will continue anyway in 5 seconds, press `Interrupt` to stop.)*" | |
| logging.warning("Model ID not matched due to LoRA loading. Consider reloading base model.") | |
| else: | |
| yield "LoRA training has only currently been validated for LLaMA, OPT, GPT-J, and GPT-NeoX models. Unexpected errors may follow. *(Will continue anyway in 5 seconds, press `Interrupt` to stop.)*" | |
| logging.warning(f"LoRA training has only currently been validated for LLaMA, OPT, GPT-J, and GPT-NeoX models. (Found model type: {model_type})") | |
| time.sleep(5) | |
| if shared.args.wbits > 0 and not shared.args.monkey_patch: | |
| yield "LoRA training in 4-bit requires loading with `--monkey-patch`" | |
| return | |
| elif not shared.args.load_in_8bit and shared.args.wbits <= 0: | |
| yield "It is highly recommended you use `--load-in-8bit` for LoRA training. *(Will continue anyway in 2 seconds, press `Interrupt` to stop.)*" | |
| logging.warning("It is highly recommended you use `--load-in-8bit` for LoRA training.") | |
| time.sleep(2) # Give it a moment for the message to show in UI before continuing | |
| if cutoff_len <= 0 or micro_batch_size <= 0 or batch_size <= 0 or actual_lr <= 0 or lora_rank <= 0 or lora_alpha <= 0: | |
| yield "Cannot input zeroes." | |
| return | |
| gradient_accumulation_steps = batch_size // micro_batch_size | |
| shared.tokenizer.pad_token_id = 0 | |
| shared.tokenizer.padding_side = "left" | |
| def tokenize(prompt): | |
| result = shared.tokenizer(prompt, truncation=True, max_length=cutoff_len + 1, padding="max_length") | |
| return { | |
| "input_ids": result["input_ids"][:-1], | |
| "attention_mask": result["attention_mask"][:-1], | |
| } | |
| # == Prep the dataset, format, etc == | |
| if raw_text_file not in ['None', '']: | |
| logging.info("Loading raw text file dataset...") | |
| with open(clean_path('training/datasets', f'{raw_text_file}.txt'), 'r', encoding='utf-8') as file: | |
| raw_text = file.read() | |
| tokens = shared.tokenizer.encode(raw_text) | |
| del raw_text # Note: could be a gig for a large dataset, so delete redundant data as we go to be safe on RAM | |
| tokens = list(split_chunks(tokens, cutoff_len - overlap_len)) | |
| for i in range(1, len(tokens)): | |
| tokens[i] = tokens[i - 1][-overlap_len:] + tokens[i] | |
| text_chunks = [shared.tokenizer.decode(x) for x in tokens] | |
| del tokens | |
| if newline_favor_len > 0: | |
| text_chunks = [cut_chunk_for_newline(x, newline_favor_len) for x in text_chunks] | |
| train_data = Dataset.from_list([tokenize(x) for x in text_chunks]) | |
| del text_chunks | |
| eval_data = None | |
| else: | |
| if dataset in ['None', '']: | |
| yield "**Missing dataset choice input, cannot continue.**" | |
| return | |
| if format in ['None', '']: | |
| yield "**Missing format choice input, cannot continue.**" | |
| return | |
| with open(clean_path('training/formats', f'{format}.json'), 'r', encoding='utf-8') as formatFile: | |
| format_data: dict[str, str] = json.load(formatFile) | |
| def generate_prompt(data_point: dict[str, str]): | |
| for options, data in format_data.items(): | |
| if set(options.split(',')) == set(x[0] for x in data_point.items() if (x[1] is not None and len(x[1].strip()) > 0)): | |
| for key, val in data_point.items(): | |
| if val is not None: | |
| data = data.replace(f'%{key}%', val) | |
| return data | |
| raise RuntimeError(f'Data-point "{data_point}" has no keyset match within format "{list(format_data.keys())}"') | |
| def generate_and_tokenize_prompt(data_point): | |
| prompt = generate_prompt(data_point) | |
| return tokenize(prompt) | |
| logging.info("Loading JSON datasets...") | |
| data = load_dataset("json", data_files=clean_path('training/datasets', f'{dataset}.json')) | |
| train_data = data['train'].map(generate_and_tokenize_prompt) | |
| if eval_dataset == 'None': | |
| eval_data = None | |
| else: | |
| eval_data = load_dataset("json", data_files=clean_path('training/datasets', f'{eval_dataset}.json')) | |
| eval_data = eval_data['train'].map(generate_and_tokenize_prompt) | |
| # == Start prepping the model itself == | |
| if not hasattr(shared.model, 'lm_head') or hasattr(shared.model.lm_head, 'weight'): | |
| logging.info("Getting model ready...") | |
| prepare_model_for_int8_training(shared.model) | |
| logging.info("Prepping for training...") | |
| config = LoraConfig( | |
| r=lora_rank, | |
| lora_alpha=lora_alpha, | |
| target_modules=model_to_lora_modules[model_id], | |
| lora_dropout=lora_dropout, | |
| bias="none", | |
| task_type="CAUSAL_LM" | |
| ) | |
| try: | |
| logging.info("Creating LoRA model...") | |
| lora_model = get_peft_model(shared.model, config) | |
| if not always_override and Path(f"{lora_file_path}/adapter_model.bin").is_file(): | |
| logging.info("Loading existing LoRA data...") | |
| state_dict_peft = torch.load(f"{lora_file_path}/adapter_model.bin") | |
| set_peft_model_state_dict(lora_model, state_dict_peft) | |
| except: | |
| yield traceback.format_exc() | |
| return | |
| if shared.args.monkey_patch: | |
| for n, m in lora_model.named_modules(): | |
| if '4bit' in str(type(m)): | |
| if m.is_v1_model: | |
| m.zeros = m.zeros.half() | |
| m.scales = m.scales.half() | |
| class Tracked(): | |
| def __init__(self): | |
| self.current_steps = 0 | |
| self.max_steps = 0 | |
| self.did_save = False | |
| tracked = Tracked() | |
| actual_save_steps = math.ceil(save_steps / gradient_accumulation_steps) | |
| class Callbacks(transformers.TrainerCallback): | |
| def on_step_begin(self, args: transformers.TrainingArguments, state: transformers.TrainerState, control: transformers.TrainerControl, **kwargs): | |
| tracked.current_steps = state.global_step * gradient_accumulation_steps | |
| tracked.max_steps = state.max_steps * gradient_accumulation_steps | |
| if WANT_INTERRUPT: | |
| control.should_epoch_stop = True | |
| control.should_training_stop = True | |
| elif state.global_step > 0 and actual_save_steps > 0 and state.global_step % actual_save_steps == 0: | |
| lora_model.save_pretrained(f"{lora_file_path}/checkpoint-{tracked.current_steps}/") | |
| def on_substep_end(self, args: transformers.TrainingArguments, state: transformers.TrainerState, control: transformers.TrainerControl, **kwargs): | |
| tracked.current_steps += 1 | |
| if WANT_INTERRUPT: | |
| control.should_epoch_stop = True | |
| control.should_training_stop = True | |
| trainer = transformers.Trainer( | |
| model=lora_model, | |
| train_dataset=train_data, | |
| eval_dataset=eval_data, | |
| args=transformers.TrainingArguments( | |
| per_device_train_batch_size=micro_batch_size, | |
| gradient_accumulation_steps=gradient_accumulation_steps, | |
| warmup_steps=math.ceil(warmup_steps / gradient_accumulation_steps), | |
| num_train_epochs=epochs, | |
| learning_rate=actual_lr, | |
| fp16=False if shared.args.cpu else True, | |
| optim=optimizer, | |
| logging_steps=5, | |
| evaluation_strategy="steps" if eval_data is not None else "no", | |
| eval_steps=math.ceil(eval_steps / gradient_accumulation_steps) if eval_data is not None else None, | |
| save_strategy="steps" if eval_data is not None else "no", | |
| output_dir=lora_file_path, | |
| lr_scheduler_type=lr_scheduler_type, | |
| load_best_model_at_end=eval_data is not None, | |
| # TODO: Enable multi-device support | |
| ddp_find_unused_parameters=None, | |
| no_cuda=shared.args.cpu | |
| ), | |
| data_collator=transformers.DataCollatorForLanguageModeling(shared.tokenizer, mlm=False), | |
| callbacks=list([Callbacks()]) | |
| ) | |
| lora_model.config.use_cache = False | |
| if torch.__version__ >= "2" and sys.platform != "win32": | |
| lora_model = torch.compile(lora_model) | |
| # == Save parameters for reuse == | |
| with open(f"{lora_file_path}/training_parameters.json", 'w', encoding='utf-8') as file: | |
| vars = locals() | |
| json.dump({x: vars[x] for x in PARAMETERS}, file) | |
| # == Main run and monitor loop == | |
| logging.info("Starting training...") | |
| yield "Starting..." | |
| if WANT_INTERRUPT: | |
| yield "Interrupted before start." | |
| return | |
| def threaded_run(): | |
| trainer.train() | |
| # Note: save in the thread in case the gradio thread breaks (eg browser closed) | |
| lora_model.save_pretrained(lora_file_path) | |
| logging.info("LoRA training run is completed and saved.") | |
| tracked.did_save = True | |
| thread = threading.Thread(target=threaded_run) | |
| thread.start() | |
| last_step = 0 | |
| start_time = time.perf_counter() | |
| while thread.is_alive(): | |
| time.sleep(0.5) | |
| if WANT_INTERRUPT: | |
| yield "Interrupting, please wait... *(Run will stop after the current training step completes.)*" | |
| elif tracked.current_steps != last_step: | |
| last_step = tracked.current_steps | |
| time_elapsed = time.perf_counter() - start_time | |
| if time_elapsed <= 0: | |
| timer_info = "" | |
| total_time_estimate = 999 | |
| else: | |
| its = tracked.current_steps / time_elapsed | |
| if its > 1: | |
| timer_info = f"`{its:.2f}` it/s" | |
| else: | |
| timer_info = f"`{1.0/its:.2f}` s/it" | |
| total_time_estimate = (1.0 / its) * (tracked.max_steps) | |
| yield f"Running... **{tracked.current_steps}** / **{tracked.max_steps}** ... {timer_info}, {format_time(time_elapsed)} / {format_time(total_time_estimate)} ... {format_time(total_time_estimate - time_elapsed)} remaining" | |
| # Saving in the train thread might fail if an error occurs, so save here if so. | |
| if not tracked.did_save: | |
| logging.info("Training complete, saving...") | |
| lora_model.save_pretrained(lora_file_path) | |
| if WANT_INTERRUPT: | |
| logging.info("Training interrupted.") | |
| yield f"Interrupted. Incomplete LoRA saved to `{lora_file_path}`" | |
| else: | |
| logging.info("Training complete!") | |
| yield f"Done! LoRA saved to `{lora_file_path}`" | |
| def split_chunks(arr, step): | |
| for i in range(0, len(arr), step): | |
| yield arr[i:i + step] | |
| def cut_chunk_for_newline(chunk: str, max_length: int): | |
| if '\n' not in chunk: | |
| return chunk | |
| first_newline = chunk.index('\n') | |
| if first_newline < max_length: | |
| chunk = chunk[first_newline + 1:] | |
| if '\n' not in chunk: | |
| return chunk | |
| last_newline = chunk.rindex('\n') | |
| if len(chunk) - last_newline < max_length: | |
| chunk = chunk[:last_newline] | |
| return chunk | |
| def format_time(seconds: float): | |
| if seconds < 120: | |
| return f"`{seconds:.0f}` seconds" | |
| minutes = seconds / 60 | |
| if minutes < 120: | |
| return f"`{minutes:.0f}` minutes" | |
| hours = minutes / 60 | |
| return f"`{hours:.0f}` hours" | |