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61 lines
1.9 KiB
61 lines
1.9 KiB
import torch
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import torch.nn as nn
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from torch.fx import GraphModule
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from colossalai.fx import ColoTracer as Tracer
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from colossalai.testing import clear_cache_before_run
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class ControlFlowModel(nn.Module):
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def __init__(self):
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super().__init__()
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self.linear1 = nn.Linear(10, 10)
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self.linear2 = nn.Linear(10, 10)
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def forward(self, x, y):
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x1 = self.linear1(x)
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y1 = self.linear2(y)
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if x1.dim() == 2:
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return x1 + y1
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else:
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return x1 - y1
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@clear_cache_before_run()
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def test_control_flow():
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model = ControlFlowModel()
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tracer = Tracer()
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graph_branch_true = tracer.trace(model,
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meta_args={
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'x': torch.rand(4, 10, device='meta'),
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'y': torch.rand(4, 10, device='meta')
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})
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graph_branch_false = tracer.trace(model,
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meta_args={
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'x': torch.rand(10, device='meta'),
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'y': torch.rand(4, 10, device='meta')
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})
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gm_branch_true = GraphModule(model, graph_branch_true, model.__class__.__name__)
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gm_branch_false = GraphModule(model, graph_branch_false, model.__class__.__name__)
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gm_branch_true.recompile()
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gm_branch_false.recompile()
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# test the true branch
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x = torch.rand(4, 10)
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y = torch.rand(4, 10)
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assert torch.all(model(x, y) == gm_branch_true(x, y))
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assert torch.all(gm_branch_false(x, y) != gm_branch_true(x, y))
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# test the true branch
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x = torch.rand(10)
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y = torch.rand(4, 10)
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assert torch.all(model(x, y) == gm_branch_false(x, y))
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assert torch.all(gm_branch_false(x, y) != gm_branch_true(x, y))
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if __name__ == '__main__':
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test_control_flow()
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