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[test] refactor tests with spawn (#3452)
* [test] added spawn decorator * polish code * polish code * polish code * polish code * polish code * polish code
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@@ -1,18 +1,13 @@
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from functools import partial
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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 torch.nn.parallel import DistributedDataParallel as DDP
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from torch.testing import assert_close
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import colossalai
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from colossalai.amp import convert_to_apex_amp
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from colossalai.nn.optimizer import HybridAdam
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from colossalai.tensor import ColoParameter, ColoTensor
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from colossalai.testing import parameterize, rerun_if_address_is_in_use
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from colossalai.utils import free_port
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from colossalai.testing import parameterize, rerun_if_address_is_in_use, spawn
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from colossalai.utils.cuda import get_current_device
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from colossalai.zero import ColoInitContext, ZeroDDP, ZeroOptimizer, post_process_colo_init_ctx
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from colossalai.zero.gemini.chunk import ChunkManager, init_chunk_manager, search_chunk_configuration
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@@ -157,8 +152,7 @@ def run_dist(rank, world_size, port):
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@pytest.mark.parametrize('world_size', [1, 4])
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@rerun_if_address_is_in_use()
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def test_optim(world_size):
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run_func = partial(run_dist, world_size=world_size, port=free_port())
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mp.spawn(run_func, nprocs=world_size)
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spawn(run_dist, world_size)
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if __name__ == '__main__':
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