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ggml-cuda: native bf16 flash attention for vec kernel (#20525)

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* ggml-cuda: native bf16 flash attention for vec and tile kernels

mma kernel still converts bf16 to fp16 before launch, native mma bf16 todo

* ggml-cuda: address code owner review feedback

reverted tile kernel changes to avoid larger refactor

* fix ci failures on turing and hip

* fix bf16 vec kernel compile on hip v_dot2 platforms

* add comments

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Co-authored-by: Johannes Gäßler <johannesg@5d6.de>
This commit is contained in:
Patrick Buckley
2026-03-22 11:05:51 +01:00
committed by GitHub
co-authored by Johannes Gäßler
parent ccb87fa3ee
commit db9d8aa428
21 changed files with 197 additions and 25 deletions
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ggml/src/ggml-cuda/template-instances/generate_cu_files.py
+1 -1
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@@ -5,7 +5,7 @@ import os
HEAD_SIZES_KQ = [40, 64, 72, 80, 96, 112, 128, 256, 576]
TYPES_KV = ["GGML_TYPE_F16", "GGML_TYPE_Q4_0", "GGML_TYPE_Q4_1", "GGML_TYPE_Q5_0", "GGML_TYPE_Q5_1", "GGML_TYPE_Q8_0"]
TYPES_KV = ["GGML_TYPE_F16", "GGML_TYPE_Q4_0", "GGML_TYPE_Q4_1", "GGML_TYPE_Q5_0", "GGML_TYPE_Q5_1", "GGML_TYPE_Q8_0", "GGML_TYPE_BF16"]
SOURCE_FATTN_TILE = """// This file has been autogenerated by generate_cu_files.py, do not edit manually.