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https://github.com/hpcaitech/ColossalAI.git
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115 lines
4.2 KiB
Python
115 lines
4.2 KiB
Python
#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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from functools import partial
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import colossalai
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import pytest
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import torch
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import torch.distributed as dist
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import torch.multiprocessing as mp
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from colossalai.core import global_context as gpc
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from colossalai.testing import rerun_on_exception
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from colossalai.utils import free_port
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from colossalai.zero.init_ctx import ZeroInitContext
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from colossalai.zero.sharded_model.utils import col_model_deepcopy
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from colossalai.zero.sharded_optim._utils import has_inf_or_nan
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from tests.components_to_test.registry import non_distributed_component_funcs
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from torch.nn.parallel import DistributedDataParallel as DDP
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from common import (MP_PARALLEL_CONFIG, ZERO_PARALLEL_CONFIG, check_params, check_sharded_model_params)
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def run_dist(rank, world_size, port, parallel_config):
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colossalai.launch(config=parallel_config,
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rank=rank,
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world_size=world_size,
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host='localhost',
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port=port,
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backend='nccl')
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test_models = ['repeated_computed_layers', 'resnet18', 'bert']
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for model_name in test_models:
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get_components_func = non_distributed_component_funcs.get_callable(model_name)
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model_builder, train_dataloader, _, optimizer_class, criterion = get_components_func()
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with ZeroInitContext(target_device=torch.cuda.current_device(),
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shard_strategy=gpc.config.zero.model_config.shard_strategy,
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shard_param=True):
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colo_model = model_builder(checkpoint=True)
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colo_optimizer = optimizer_class(colo_model.parameters(), lr=1e-3)
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engine, train_dataloader, _, _ = colossalai.initialize(colo_model,
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optimizer=colo_optimizer,
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criterion=criterion,
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train_dataloader=train_dataloader)
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torch_model = model_builder(checkpoint=True).half()
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col_model_deepcopy(engine.model, torch_model)
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torch_model = torch_model.cuda().float()
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engine.train()
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torch_optimizer = optimizer_class(torch_model.parameters(), lr=1e-3)
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if dist.get_world_size() > 1:
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torch_model = DDP(torch_model)
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i = 0
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for data, label in train_dataloader:
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if i > 4:
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break
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data, label = data.cuda(), label.cuda()
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engine.zero_grad()
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torch_optimizer.zero_grad()
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if criterion:
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output = engine(data)
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loss = engine.criterion(output, label)
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torch_output = torch_model(data)
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torch_loss = engine.criterion(torch_output, label)
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else:
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loss = engine(data, label)
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torch_loss = torch_model(data, label)
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engine.backward(loss)
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engine.step()
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torch_loss.backward()
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for param in torch_model.parameters():
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if param.grad is not None:
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assert not has_inf_or_nan(param.grad)
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torch_optimizer.step()
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i += 1
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if parallel_config == MP_PARALLEL_CONFIG:
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check_params(torch_model, colo_model, loose=True)
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elif parallel_config == ZERO_PARALLEL_CONFIG:
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check_sharded_model_params(torch_model, colo_model, loose=True)
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# FIXME: enable this test in next PR
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@pytest.mark.skip
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@pytest.mark.dist
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@pytest.mark.parametrize("world_size", [2, 4])
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@rerun_on_exception(exception_type=mp.ProcessRaisedException, pattern=".*Address already in use.*")
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def test_mp_engine(world_size):
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run_func = partial(run_dist, world_size=world_size, port=free_port(), parallel_config=MP_PARALLEL_CONFIG)
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mp.spawn(run_func, nprocs=world_size)
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@pytest.mark.dist
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@pytest.mark.parametrize("world_size", [1, 2])
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@rerun_on_exception(exception_type=mp.ProcessRaisedException, pattern=".*Address already in use.*")
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def test_zero_engine(world_size):
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run_func = partial(run_dist, world_size=world_size, port=free_port(), parallel_config=ZERO_PARALLEL_CONFIG)
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mp.spawn(run_func, nprocs=world_size)
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if __name__ == '__main__':
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test_zero_engine(world_size=4)
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