mirror of https://github.com/hpcaitech/ColossalAI
46 lines
1.5 KiB
Python
46 lines
1.5 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.multiprocessing as mp
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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.shard_utils.tensor_shard_strategy import \
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TensorShardStrategy
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from tests.components_to_test.registry import non_distributed_component_funcs
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from common import CONFIG, Net
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def run_dist(rank, world_size, port):
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colossalai.launch(config=CONFIG, rank=rank, world_size=world_size, host='localhost', port=port, backend='nccl')
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for get_components_func in non_distributed_component_funcs:
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model_builder, _, _, _, _ = get_components_func()
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with ZeroInitContext(convert_fp16=True,
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convert_cuda=True,
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shard_strategy=TensorShardStrategy(),
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shard_param=True):
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model = model_builder(checkpoint=True)
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for param in model.parameters():
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assert hasattr(param, 'col_attr')
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assert param.col_attr.data.dtype == torch.half
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assert param.col_attr.data.is_sharded
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assert param.col_attr.data.payload.device.type == 'cuda'
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@pytest.mark.dist
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@pytest.mark.parametrize("world_size", [1, 2, 4])
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def test_zero_init_context(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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if __name__ == '__main__':
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test_zero_init_context(2)
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