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7f8b16635b
* [misc] remove config arg from initialize * [misc] remove old tensor contrusctor * [plugin] add npu support for ddp * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * [devops] fix doc test ci * [test] fix test launch * [doc] update launch doc --------- Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
38 lines
1.0 KiB
Python
38 lines
1.0 KiB
Python
import pytest
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import torch
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import torch.distributed as dist
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from torch.distributed import ReduceOp
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from colossalai.device.device_mesh import DeviceMesh
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from colossalai.initialize import launch
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from colossalai.testing import rerun_if_address_is_in_use, spawn
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def check_layer(rank, world_size, port):
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launch(rank=rank, world_size=world_size, host="localhost", port=port, backend="nccl")
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physical_mesh_id = torch.arange(0, 4)
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assert rank == dist.get_rank()
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tensor_to_check = torch.tensor([2, 2, 2, 2]).cuda()
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mesh_shape = (2, 2)
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# [[0, 1,
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# [2, 3]]
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device_mesh = DeviceMesh(physical_mesh_id, mesh_shape, init_process_group=True)
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for axis in range(len(mesh_shape)):
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tensor = torch.ones(4).cuda()
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pg = device_mesh.get_process_group(axis=axis)
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dist.all_reduce(tensor, op=ReduceOp.SUM, group=pg)
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assert tensor.equal(tensor_to_check)
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@pytest.mark.dist
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@rerun_if_address_is_in_use()
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def test_logical_pg():
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spawn(check_layer, 4)
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if __name__ == "__main__":
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test_logical_pg()
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