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82 lines
2.3 KiB
82 lines
2.3 KiB
import os
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import time
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import pytest
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import torch
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import torch.nn as nn
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from rpc_test_utils import parse_args, rpc_run
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from titans.dataloader.cifar10 import build_cifar
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from torchvision.models import resnet50
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from tqdm import tqdm
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from colossalai.pipeline.pipelinable import PipelinableContext
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from colossalai.pipeline.rpc import OneFOneBPipelineEngine
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def flatten(x):
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return torch.flatten(x, 1)
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def partition(pp_rank: int, chunk: int, stage_num: int):
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pipelinable = PipelinableContext()
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# build model partitions
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with pipelinable:
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# input : [B, 3, 32, 32]
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_ = resnet50()
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pipelinable.policy = "customized"
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exec_seq = [
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'conv1', 'bn1', 'relu', 'maxpool', 'layer1', 'layer2', 'layer3', 'layer4', 'avgpool', (flatten, "behind"), 'fc'
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]
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pipelinable.to_layer_list(exec_seq)
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partition = pipelinable.partition(chunk, stage_num, pp_rank)
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return partition
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def run_master(args):
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batch_size = args.batch_size
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chunk = args.chunk
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device = args.device
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world_size = args.world_size
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stage_num = world_size
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num_microbatches = args.num_microbatches
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# build dataloader
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root = os.environ.get('DATA', './data')
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train_dataloader, test_dataloader = build_cifar(batch_size, root, padding=4, crop=32, resize=32)
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criterion = nn.CrossEntropyLoss()
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pp_engine = OneFOneBPipelineEngine(partition_fn=partition,
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stage_num=stage_num,
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num_microbatches=num_microbatches,
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device=device,
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chunk=chunk,
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criterion=criterion,
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checkpoint=False)
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pp_engine.initialize_optimizer(torch.optim.Adam, lr=1e-3)
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s = time.time()
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for bx, by in tqdm(train_dataloader):
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pp_engine.forward_backward(bx, labels=by, forward_only=False)
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cost_time = time.time() - s
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print("total cost time :", cost_time)
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print("cost time per batch:", cost_time / len(train_dataloader))
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@pytest.mark.skip("Test for performance, no need for CI")
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def main():
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args = parse_args()
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# this is due to limitation of partition function
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args.world_size = 2
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args.chunk = 1
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rpc_run(args, run_master)
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if __name__ == '__main__':
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main()
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