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Fix pairwise attention comparison in test #737

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merged 4 commits into from
Nov 15, 2023
Merged

Fix pairwise attention comparison in test #737

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60cdf36
fix attn impl not being set
sashaDoubov Nov 14, 2023
f603b46
change d_model and increase tolerance
sashaDoubov Nov 15, 2023
51a43b1
add special case
sashaDoubov Nov 15, 2023
d915934
undo typo
sashaDoubov Nov 15, 2023
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7 changes: 5 additions & 2 deletions tests/test_flash_triton_torch.py
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Original file line number Diff line number Diff line change
Expand Up @@ -74,7 +74,7 @@ def test_attn_impl(attn_impl_0: str,

cfg = om.create({
'attn_impl': 'flash',
'd_model': 128,
'd_model': 64,
'n_heads': 4,
'attn_pdrop': 0,
'clip_qkv': clip_qkv,
Expand All @@ -88,6 +88,7 @@ def test_attn_impl(attn_impl_0: str,

cfg.attn_impl = attn_impl_0
attn0 = attention.ATTN_CLASS_REGISTRY[attn_type](**cfg).to(device)
cfg.attn_impl = attn_impl_1
attn1 = attention.ATTN_CLASS_REGISTRY[attn_type](**cfg).to(device)

attn1.load_state_dict(attn0.state_dict())
Expand Down Expand Up @@ -182,7 +183,9 @@ def gen_bias(attn_impl: str):
assert p.grad is not None
assert tp.grad is not None
assert allclose_helper(p, tp)
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assert allclose_helper(p.grad, tp.grad)
# Increased tolerance due to rope_impl=hf having 1 failing element
# in the torch vs. triton, clip=True, qk_ln=True case
assert allclose_helper(p.grad, tp.grad, atol=2.e-2, rtol=2.e-2)

assert x0.grad is not None
assert x1.grad is not None
Expand Down
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