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88 lines
2.6 KiB
88 lines
2.6 KiB
import pytest
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import torch
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import torch.nn.functional as F
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from torch.nn import Parameter
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import colossalai
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from colossalai.tensor import ColoTensor, ColoTensorSpec, ProcessGroup, ShardSpec
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from colossalai.testing import rerun_if_address_is_in_use, spawn
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from colossalai.utils import get_current_device
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def _run_layer_norm():
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ln_op = torch.nn.LayerNorm(2, 3, device=get_current_device())
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input_t = torch.randn(3, 2, device=get_current_device())
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pg = ProcessGroup(tp_degree=torch.distributed.get_world_size())
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input_t_colo = ColoTensor.from_torch_tensor(input_t.clone().detach(), ColoTensorSpec(pg))
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# prepare colossalai LN
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weight = ColoTensor(Parameter(ln_op.weight.detach()), ColoTensorSpec(pg))
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bias = ColoTensor(Parameter(ln_op.bias.detach()), ColoTensorSpec(pg))
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output = ln_op(input_t)
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output_colo = F.layer_norm(input_t_colo, ln_op.normalized_shape, weight, bias, ln_op.eps)
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assert torch.allclose(output_colo, output)
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torch.mean(output).backward()
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torch.mean(output_colo).backward()
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assert torch.allclose(ln_op.weight.grad, weight.grad)
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def check_spec_eq(tensor, other):
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assert isinstance(tensor, ColoTensor) and isinstance(other, ColoTensor)
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for k in dir(tensor.dist_spec):
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if not k.startswith('__'):
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assert hasattr(other.dist_spec, k), f"{k}"
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assert getattr(tensor.dist_spec, k) == getattr(other.dist_spec, k)
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def check_element_wise_ops():
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world_size = torch.distributed.get_world_size()
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pg = ProcessGroup(tp_degree=world_size)
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t = torch.rand(2, 2)
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x = ColoTensor(t, spec=ColoTensorSpec(pg, ShardSpec([0], [pg.tp_world_size()])))
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check_spec_eq(x, x.cuda())
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assert torch.equal(x.cuda(), t.cuda())
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check_spec_eq(x, torch.abs(x))
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assert torch.equal(torch.abs(x), torch.abs(t))
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check_spec_eq(x, F.sigmoid(x))
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assert torch.equal(F.sigmoid(x), F.sigmoid(t))
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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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check_element_wise_ops()
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_run_layer_norm()
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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_element_wise_ops(world_size):
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spawn(run_dist, world_size)
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def run_dist2(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_layer_norm()
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@pytest.mark.dist
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@pytest.mark.parametrize('world_size', [1])
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@rerun_if_address_is_in_use()
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def test_ln(world_size):
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spawn(run_dist2, world_size)
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def check_all():
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test_element_wise_ops(2)
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if __name__ == '__main__':
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check_all()
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