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Fp8 block scale quantization for fmha fwd (#3330)

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* add block scale parameters to kernel

* add block scale to kernel

* add smoke test

* format

* Revert "format"

This reverts commit 356c3c9706.

* only format my code

* format py

* fix auto not allowd in function prototype

* change instance tttt to ttff

* fix structured binding issue

* change s_acc elementwise op

* async pipeline add block scale

* add quantation P using shift exp2

* precompute (m - shift) once per row

* change blk scale seqstrt ptr name

* fix some name

* fix for  deduction guide

* fix some comments

* add P scale to qr_ksvs_pipeline

* add comment to idx_identity

* change the method of calculating descale block index

* unify naming style: use block_scale_ as name prefix

* unify naming style

* update the CHANGELOG.md

* Add FP8 block scale quantization support for FMHA forward kernel

---------

Co-authored-by: Illia Silin <98187287+illsilin@users.noreply.github.com>
Co-authored-by: Po Yen Chen <PoYen.Chen@amd.com>
This commit is contained in:
ltqin
2026-01-22 12:58:26 +08:00
committed by GitHub
parent 4c2c18ef48
commit dd0b4294af
14 changed files with 667 additions and 84 deletions
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5
example/ck_tile/01_fmha/script/smoke_test_fwd.sh
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@@ -95,10 +95,11 @@ run_fp8bf16_tests() {
for perm in 0 1 ; do
for b in 1 2 ; do
for hdim in 64 128 256 ; do
for scale in 1 2; do
$EXE -prec=fp8bf16 -init=3 -b=$b -h=1 -d=$hdim -s=128 -iperm=$perm -operm=$perm -vlayout=r -qscale=1 -kname=$KNAME $COMMON_ARGS
$EXE -prec=fp8bf16 -init=3 -b=$b -h=1 -d=$hdim -s=128 -iperm=$perm -operm=$perm -vlayout=r -qscale=$scale -kname=$KNAME $COMMON_ARGS
done ; done ; done
done ; done ; done ; done
}
run_fp8fp32_tests() {