Repository: hpcaitech/ColossalAI

Issue:
[tensor] fix some unittests

[tensor] fix some unittests

[tensor] fix some unittests



Discussion:

Resolving patch:
diff --git a/examples/language/bert/train_bert_demo.py b/examples/language/bert/train_bert_demo.py
new file mode 100644
--- /dev/null
+++ b/examples/language/bert/train_bert_demo.py
@@ -0,0 +1,332 @@
+import os
+from functools import partial
+from time import time
+
+import psutil
+import torch
+from packaging import version
+from torch import nn
+from torch.nn.parallel import DistributedDataParallel as DDP
+from transformers import AlbertConfig, AlbertForSequenceClassification, BertConfig, BertForSequenceClassification
+
+import colossalai
+from colossalai.logging import disable_existing_loggers, get_dist_logger
+from colossalai.nn.optimizer import HybridAdam
+from colossalai.nn.parallel import zero_model_wrapper, zero_optim_wrapper
+from colossalai.tensor import ColoParameter, ComputePattern, ComputeSpec, ProcessGroup, ReplicaSpec, ShardSpec
+from colossalai.utils import get_current_device
+from colossalai.utils.model.colo_init_context import ColoInitContext
+
+CAI_VERSION = colossalai.__version__
+
+
+def get_tflops(model_numel, batch_size, seq_len, step_time):
+    return model_numel * batch_size * seq_len * 8 / 1e12 / (step_time + 1e-12)
+
+
+def get_profile_context(enable_flag, warmup_steps, active_steps, save_dir):
+    from contextlib import nullcontext
+
+    from torch.profiler import ProfilerActivity, profile, schedule, tensorboard_trace_handler
+    if enable_flag:
+        return profile(activities=[ProfilerActivity.CPU, ProfilerActivity.CUDA],
+                       schedule=schedule(wait=0, warmup=warmup_steps, active=active_steps),
+                       on_trace_ready=tensorboard_trace_handler(save_dir),
+                       record_shapes=True,
+                       profile_memory=True)
+    else:
+
+        class DummyProfiler:
+
+            def __init__(self):
+                self.step_number = 0
+
+            def step(self):
+                self.step_number += 1
+
+        return nullcontext(DummyProfiler())
+
+
+def get_time_stamp():
+    import time
+    cur_time = time.strftime("%d-%H:%M", time.localtime())
+    return cur_time
+
+
+def get_bert_data(batch_size: int, sequence_length: int, vacob_size: int, n_class: int, device: torch.device):
+    input = torch.randint(
+        low=0,
+        high=vacob_size,
+        size=(batch_size, sequence_length),
+        device=device,
+        dtype=torch.long,
+    )
+    label = torch.randint(low=0, high=n_class, size=(batch_size,), device=device, dtype=torch.long)
+    return input, label
+
+
+def parse_args():
+    parser = colossalai.get_default_parser()
+    parser.add_argument(
+        "--distplan",
+        type=str,
+        default='CAI_Gemini',
+        help="The distributed plan [colossalai, zero1, zero2, torch_ddp, torch_zero].",
+    )
+    parser.add_argument(
+        "--placement",
+        type=str,
+        default='cpu',
+        help="Placement Policy for Gemini. Valid when using colossalai as dist plan.",
+    )
+    parser.add_argument(
+        "--batch_size",
+        type=int,
+        default=8,
+        help="batch size per DP group of training.",
+    )
+    parser.add_argument(
+        "--model_type",
+        type=str,
+        default="bert",
+        help="bert or albert",
+    )
+    parser.add_argument(
+        "--train_step",
+        type=int,
+        default=10,
+        help="training iterations for test",
+    )
+
+    args = parser.parse_args()
+    return args
+
+
+SEQ_LEN = 512
+VOCAB_SIZE = 1000
+NUM_LABELS = 10
+
+
+# Parameter Sharding Strategies for Tensor Parallelism
+def split_param_single_dim_tp1d(dim: int, param: ColoParameter, pg: ProcessGroup):
+    spec = (ShardSpec([dim], [pg.tp_world_size()]), ComputeSpec(ComputePattern.TP1D))
+    param.set_tensor_spec(*spec)
+
+
+def split_param_row_tp1d(param: ColoParameter, pg: ProcessGroup):
+    split_param_single_dim_tp1d(0, param, pg)
+
+
+def split_param_col_tp1d(param: ColoParameter, pg: ProcessGroup):
+    split_param_single_dim_tp1d(-1, param, pg)
+
+
+def get_cpu_mem():
+    return psutil.Process().memory_info().rss / 1024**2
+
+
+def get_gpu_mem():
+    return torch.cuda.memory_allocated() / 1024**2
+
+
+def get_mem_info(prefix=''):
+    return f'{prefix}GPU memory usage: {get_gpu_mem():.2f} MB, CPU memory usage: {get_cpu_mem():.2f} MB'
+
+
+def get_model_size(model: nn.Module):
+    total_numel = 0
+    for module in model.modules():
+        for p in module.parameters(recurse=False):
+            total_numel += p.numel()
+    return total_numel
+
+
+def model_builder(args):
+    if args.model_type == "bert":
+        cfg = BertConfig(vocab_size=VOCAB_SIZE, num_labels=NUM_LABELS)
+        return BertForSequenceClassification(cfg)
+    elif args.model_type == "albert":
+        cfg = AlbertConfig(vocab_size=VOCAB_SIZE, num_labels=NUM_LABELS)
+        return AlbertForSequenceClassification(cfg)
+    else:
+        raise RuntimeError
+
+
+def model_size_formatter(numel: int) -> str:
+    GB_SIZE = 10**9
+    MB_SIZE = 10**6
+    KB_SIZE = 10**3
+    if numel >= GB_SIZE:
+        return f'{numel / GB_SIZE:.1f}B'
+    elif numel >= MB_SIZE:
+        return f'{numel / MB_SIZE:.1f}M'
+    elif numel >= KB_SIZE:
+        return f'{numel / KB_SIZE:.1f}K'
+    else:
+        return str(numel)
+
+
+def set_cpu_maximum_parallelism():
+    conf_str = torch.__config__.parallel_info()
+    inter_str = conf_str.split("hardware_concurrency() : ")[1]
+    max_concurrency = inter_str.split('\n')[0]
+    os.environ["OMP_NUM_THREADS"] = max_concurrency
+    print(f"environmental variable OMP_NUM_THREADS is set to {max_concurrency}.")
+
+
+def main():
+    # version check
+    # this example is supposed to work for versions greater than 0.2.0
+    assert version.parse(CAI_VERSION) >= version.parse("0.2.0")
+
+    set_cpu_maximum_parallelism()
+    args = parse_args()
+
+    # if args.distplan not in ["colossalai", "torch_ddp", "torch_zero", "zero1", "zero2"]:
+    if args.distplan not in ["CAI_ZeRO1", "CAI_ZeRO2", "CAI_Gemini", "Pytorch_DDP", "Pytorch_ZeRO"]:
+        raise TypeError(f"{args.distplan} is error")
+
+    # batch size per DP degree
+    BATCH_SIZE = args.batch_size
+
+    NUM_STEPS = args.train_step
+
+    WARMUP_STEPS = 1
+    assert WARMUP_STEPS < NUM_STEPS, "warmup steps should smaller than the total steps"
+    assert (NUM_STEPS - WARMUP_STEPS) % 2 == 1, "the number of valid steps should be odd to take the median"
+    PROF_FLAG = False    # The flag of profiling, False by default
+
+    disable_existing_loggers()
+    colossalai.launch_from_torch(config={})
+
+    logger = get_dist_logger()
+    logger.info(f" {args.distplan}, batch size {BATCH_SIZE}", ranks=[0])
+
+    torch.manual_seed(123)
+    if args.distplan.startswith("CAI"):
+        # all param must use the same process group.
+        world_size = torch.distributed.get_world_size()
+
+        # build a base-bert model
+        with ColoInitContext(device=get_current_device(), dtype=torch.half):
+            model = model_builder(args)
+            # model = BertForSequenceClassification(BertConfig(vocal_size =  VOCAB_SIZE))
+
+        # asign running configurations
+        gemini_config = None
+        if args.distplan.startswith("CAI_ZeRO"):
+            optim_config = dict(reduce_bucket_size=12 * 1024 * 1024, overlap_communication=True, verbose=True)
+        elif args.distplan == "CAI_Gemini":
+            gemini_config = dict(strict_ddp_mode=True,
+                                 device=get_current_device(),
+                                 placement_policy=args.placement,
+                                 pin_memory=True,
+                                 hidden_dim=model.config.hidden_size,
+                                 search_range_mb=128)
+            optim_config = dict(gpu_margin_mem_ratio=0.)
+        else:
+            raise RuntimeError
+
+        # build a highly optimized gpu/cpu optimizer
+        optimizer = HybridAdam(model.parameters(), lr=1e-3)
+
+        if args.distplan == "CAI_ZeRO1":
+            zero_stage = 1
+        elif args.distplan == "CAI_ZeRO2":
+            zero_stage = 2
+        elif args.distplan == "CAI_Gemini":
+            zero_stage = 3
+        else:
+            raise RuntimeError
+
+        # wrap your model and optimizer
+        model = zero_model_wrapper(model, zero_stage, gemini_config)
+        optimizer = zero_optim_wrapper(model, optimizer, optim_config=optim_config)
+
+        logger.info(get_mem_info(prefix='After init optim, '), ranks=[0])
+    elif args.distplan.startswith("Pytorch"):
+        model = model_builder(args).cuda()
+        model = DDP(model)
+        if args.distplan.endswith("DDP"):
+            optimizer = torch.optim.Adam(model.parameters(), lr=1e-3)
+        elif args.distplan.endswith("ZeRO"):
+            from torch.distributed.optim import ZeroRedundancyOptimizer
+            optimizer = ZeroRedundancyOptimizer(model.parameters(), optimizer_class=torch.optim.Adam, lr=1e-3)
+    else:
+        raise RuntimeError
+
+    # model is shared after TP
+    numel = get_model_size(model)
+    logger.info(f"the size of testing model size is {model_size_formatter(numel)}.")
+    logger.info(get_mem_info(prefix='After init model, '), ranks=[0])
+
+    # Tflops_per_GPU = global_batch * global_numel * seq_len * 8 / #gpu
+    # = (batch_per_DP_group * dp_degree) * (numel * tp_degree) * seq_len * 8 / (tp_degree * dp_degree)
+    # = batch_per_DP_group * numel * seq_len * 8
+    get_tflops_func = partial(get_tflops, numel, BATCH_SIZE, SEQ_LEN)
+
+    torch.cuda.synchronize()
+    model.train()
+    tflops_list = []
+
+    def train_step():
+        # we just use randomly generated data here
+        input_ids, labels = get_bert_data(BATCH_SIZE,
+                                          SEQ_LEN,
+                                          VOCAB_SIZE,
+                                          NUM_LABELS,
+                                          device=torch.cuda.current_device())
+        optimizer.zero_grad()
+
+        start = time()
+        outputs = model(input_ids, labels=labels)
+        loss, logits = outputs[:2]
+        torch.cuda.synchronize()
+        fwd_end = time()
+        fwd_time = fwd_end - start
+        logger.info(get_mem_info(prefix=f'[{n + 1}/{NUM_STEPS}] Forward '), ranks=[0])
+
+        if args.distplan.startswith("CAI"):
+            optimizer.backward(loss)
+        elif args.distplan.startswith("Pytorch"):
+            loss.backward()
+        else:
+            raise RuntimeError
+
+        torch.cuda.synchronize()
+        bwd_end = time()
+        bwd_time = bwd_end - fwd_end
+        logger.info(get_mem_info(prefix=f'[{n + 1}/{NUM_STEPS}] Backward '), ranks=[0])
+
+        optimizer.step()
+        torch.cuda.synchronize()
+        optim_time = time() - bwd_end
+        step_time = time() - start
+        logger.info(get_mem_info(prefix=f'[{n + 1}/{NUM_STEPS}] Optimizer step '), ranks=[0])
+
+        step_tflops = get_tflops_func(step_time)
+        logger.info(
+            f"[{n + 1}/{NUM_STEPS}] Loss:{loss.item():.3f}, Step time: {step_time:.3f}s, TFLOPS: {get_tflops_func(step_time):.3f}, FWD time: {fwd_time:.3f}s, BWD time: {bwd_time:.3f}s, OPTIM time: {optim_time:.3f}s",
+            ranks=[0],
+        )
+        if n >= WARMUP_STEPS:
+            tflops_list.append(step_tflops)
+
+    demo_profiler = get_profile_context(PROF_FLAG,
+                                        WARMUP_STEPS,
+                                        NUM_STEPS - WARMUP_STEPS,
+                                        save_dir=f"profile/{get_time_stamp()}-demo")
+
+    with demo_profiler as prof:
+        for n in range(NUM_STEPS):
+            train_step()
+            prof.step()
+
+    tflops_list.sort()
+    median_index = ((NUM_STEPS - WARMUP_STEPS) >> 1) + WARMUP_STEPS
+    logger.info(f"Median TFLOPS is {tflops_list[median_index]:.3f}")
+    torch.cuda.synchronize()
+
+
+if __name__ == '__main__':
+    main()


Test patch:
diff --git a/examples/language/bert/test_ci.sh b/examples/language/bert/test_ci.sh
new file mode 100644
--- /dev/null
+++ b/examples/language/bert/test_ci.sh
@@ -0,0 +1,2 @@
+set -x
+env GPUNUM=1 bash run_gemini.sh