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87 lines
3.1 KiB
87 lines
3.1 KiB
import torch
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import colossalai
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import pytest
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import torch.multiprocessing as mp
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from typing import List
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from functools import partial
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from colossalai.gemini import ChunkManager
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from colossalai.testing import rerun_if_address_is_in_use, parameterize
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from colossalai.utils import free_port
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from colossalai.tensor import ProcessGroup as ColoProcessGroup
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def check_has_params(params: List[torch.Tensor], has_tensors: List[bool]):
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for p, has_tensor in zip(params, has_tensors):
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if has_tensor:
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assert p.storage().size() > 0
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assert p.device.type == 'cuda'
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else:
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assert p.storage().size() == 0
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# HAS_TENSORS[use_chunk][use_zero]
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HAS_TENSORS = {
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True: {
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True: [[True, True, False], [False, False, True]],
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False: [[True, True, True], [True, True, True]]
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},
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False: {
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True: [[True, False, True], [False, True, False]],
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False: [[True, True, True], [True, True, True]]
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}
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}
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TOTAL_MEM = {True: {True: [512, 512], False: [1024, 1024]}, False: {True: [512, 256], False: [768, 768]}}
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@parameterize('use_chunk', [False, True])
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@parameterize('use_zero', [False, True])
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def run_chunk_zero(use_chunk, use_zero):
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pg = ColoProcessGroup()
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rank = pg.rank()
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if rank == 0:
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print(f'use_chunk={use_chunk}, use_zero={use_zero}')
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params = [torch.rand(8, 8) for _ in range(3)]
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chunk_size = 128 if use_chunk else None
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chunk_manager = ChunkManager(chunk_size, pg, enable_distributed_storage=use_zero)
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chunk_manager.create_group('param')
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assert chunk_manager.total_mem['cpu'] == 0
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assert chunk_manager.total_mem['cuda'] == 0
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for p in params:
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chunk_manager.append_tensor(p, 'param')
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check_has_params(params, HAS_TENSORS[use_chunk][use_zero][rank])
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assert chunk_manager.total_mem['cpu'] == 0
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assert chunk_manager.total_mem['cuda'] == TOTAL_MEM[use_chunk][use_zero][rank]
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chunks = chunk_manager.get_chunks(params)
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for chunk in chunks:
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chunk_manager.access_chunk(chunk)
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check_has_params(params, [True, True, True])
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assert chunk_manager.total_mem['cpu'] == 0
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assert chunk_manager.total_mem['cuda'] == TOTAL_MEM[use_chunk][False][rank]
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for chunk in chunks:
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chunk_manager.release_chunk(chunk)
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check_has_params(params, HAS_TENSORS[use_chunk][use_zero][rank])
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assert chunk_manager.total_mem['cpu'] == 0
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assert chunk_manager.total_mem['cuda'] == TOTAL_MEM[use_chunk][use_zero][rank], chunk_manager.total_mem['cuda']
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for chunk in chunks:
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chunk_manager.move_chunk(chunk, torch.device('cpu'))
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assert chunk_manager.total_mem['cpu'] == TOTAL_MEM[use_chunk][use_zero][rank], chunk_manager.total_mem['cuda']
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assert chunk_manager.total_mem['cuda'] == 0
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def run_dist(rank, world_size, port):
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colossalai.launch(config={}, rank=rank, world_size=world_size, host='localhost', port=port, backend='nccl')
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run_chunk_zero()
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@pytest.mark.dist
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@pytest.mark.parametrize('world_size', [2])
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@rerun_if_address_is_in_use()
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def test_chunk_mapping(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_chunk_mapping(2)
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