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ggml-cuda: HIP: optimize packed byte subtraction (__vsubss4 -> __vsub4) (#29478)

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* ggml-cuda: HIP: optimize non-saturating packed byte subtraction (`__vsubss4`)

* CI: ignore 1 spilled vgpr in fattn_vec

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Co-authored-by: Carl Philipp Klemm <carl@uvos.xyz>
This commit is contained in:
thelittlefireman
2026-09-29 19:59:19 +02:00
committed by GitHub
co-authored by Carl Philipp Klemm
parent cee37ffea0
commit 748d4225b9
4 changed files with 20 additions and 14 deletions
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scripts/hip/gcn-cdna-vgpr-check.py
+1
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@@ -82,6 +82,7 @@ def main():
'_ZL18flash_attn_ext_f16ILi576ELi512ELi1ELi32ELb0ELb1ELb0EEvPKcS1_S1_S1_S1_PKiPfP15HIP_vector_typeIfLj2EEffffjfiS5_IjLj3EEiiiiiiiiiiiliiliiiiil',
'_ZL18flash_attn_ext_f16ILi576ELi512ELi2ELi16ELb0ELb1ELb0EEvPKcS1_S1_S1_S1_PKiPfP15HIP_vector_typeIfLj2EEffffjfiS5_IjLj3EEiiiiiiiiiiiliiliiiiil',
'_ZL18flash_attn_ext_f16ILi576ELi512ELi8ELi4ELb0ELb1ELb0EEvPKcS1_S1_S1_S1_PKiPfP15HIP_vector_typeIfLj2EEffffjfiS5_IjLj3EEiiiiiiiiiiiliiliiiiil',
'_ZL18flash_attn_ext_vecILi256ELi1EL9ggml_type2ELS0_2ELb0EEvPKcS2_S2_S2_S2_PKiPfP15HIP_vector_typeIfLj2EEffffjfiS6_IjLj3EEiiiiiiiiiiiliiliiiiil',
}
functions = parse_log_file(log_file)