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import torch
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from colossalai.cluster.device_mesh_manager import DeviceMeshInfo, DeviceMeshManager
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from colossalai.initialize import launch
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from colossalai.logging import disable_existing_loggers
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from colossalai.testing import spawn
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def check_device_mesh_manager(rank, world_size, port):
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disable_existing_loggers()
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launch(config={}, rank=rank, world_size=world_size, host='localhost', port=port, backend='nccl')
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device_mesh_manager = DeviceMeshManager()
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# TODO(ver217): this test is strictly relies on hardware, temporary skip it
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# device_mesh_info_auto = DeviceMeshInfo(physical_ids=[0, 1, 2, 3],)
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# device_mesh_auto = device_mesh_manager.create_device_mesh('0', device_mesh_info_auto)
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# assert device_mesh_auto.shape == (2, 2)
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# assert device_mesh_auto._logical_mesh_id.tolist() == [[0, 1], [2, 3]]
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device_mesh_info_with_shape = DeviceMeshInfo(
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physical_ids=[0, 1, 2, 3],
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mesh_shape=(2, 2),
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)
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device_mesh_with_shape = device_mesh_manager.create_device_mesh('1', device_mesh_info_with_shape)
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assert device_mesh_with_shape.shape == (2, 2)
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assert device_mesh_with_shape._logical_mesh_id.tolist() == [[0, 1], [2, 3]]
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def test_device_mesh_manager():
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spawn(check_device_mesh_manager, 4)
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if __name__ == '__main__':
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test_device_mesh_manager()
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