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[None][feat] add CuteDSL FP8/FP16 MLA decode attention fmha lib #15138

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Merged
brnguyen2 merged 25 commits into from
Aug 5, 2026
Merged

[None][feat] add CuteDSL FP8/FP16 MLA decode attention fmha lib #15138

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e37ef7f
[None][feat] add CuteDSL FP8/FP16 MLA decode attention backend
haow-nv Jun 8, 2026
4c01205
[None][feat] CuteDSL MLA decode: fp8 scaling fix, BF16 support, per-l…
haow-nv Jun 12, 2026
7678862
[None][fix] CuteDSL MLA decode: v1 paged-KV layout + CUDA-graph-safe …
haow-nv Jun 16, 2026
748ffeb
[TRTLLM-12807][feat] Wrap CuteDSL MLA decode as FMHA lib
yuxianq Jun 13, 2026
66159f1
[None][feat] CuteDSL MLA decode: MTP causal mask + can_implement gate
haow-nv Jun 24, 2026
0fe7413
[None][feat] CuteDSL MLA decode: persistent + split-KV alignment (fla…
haow-nv Jun 29, 2026
7aed06f
[None][feat] CuteDSL MLA decode: mixed prefill+decode page-table offs…
haow-nv Jun 30, 2026
cb20915
[None][feat] CuteDSL MLA decode: autotuned is_persistent tactic, perf…
haow-nv Jul 6, 2026
0960936
[None][chore] CuteDSL MLA: drop stale is_available comment
haow-nv Jul 6, 2026
722a7de
[None][chore] CuteDSL MLA decode: comment cleanup, drop default_is_pe…
haow-nv Jul 6, 2026
e396dc1
[None][chore] CuteDSL MLA decode: apply pre-commit formatting, fix co…
haow-nv Jul 6, 2026
5d6bc50
[None][chore] CuteDSL MLA decode: drop standalone decode unit test
haow-nv Jul 7, 2026
9bc6bc1
[None][fix] CuteDSL MLA: reject sparse attention in FMHA gate
haow-nv Jul 7, 2026
b082608
[None][chore] CuteDSL MLA decode: trim comments, drop unused runner i…
haow-nv Jul 7, 2026
cb08644
[None][perf] CuteDSL MLA: gate (128,1) decode on spec-decode off
haow-nv Jul 7, 2026
3968be1
[None][perf] CuteDSL MLA: batch-aware perf gate, autotuner decode war…
haow-nv Jul 10, 2026
de72d57
[None][chore] CuteDSL MLA: apply pre-commit formatting
haow-nv Jul 10, 2026
d0949c6
[None][perf] CuteDSL MLA: restructure decode perf gate, drop (128,1) …
haow-nv Jul 14, 2026
66b8e90
[None][fix] stabilize CuteDSL MLA split-KV workspace for CUDA graphs
haow-nv Jul 15, 2026
a9d21f5
[None][chore] CuteDSL MLA decode: drop debug kernel-arg dumps, fix au…
haow-nv Jul 23, 2026
60b0425
[None][fix] CuteDSL MLA decode: reject Helix, slice AutoTuner workspa…
haow-nv Jul 28, 2026
2915a9e
[None][fix] CuteDSL MLA decode: tighten split_kv and batch gating
haow-nv Jul 29, 2026
a575f97
[None][chore] CuteDSL MLA decode: rename fmha/cute_dsl.py to cute_dsl…
haow-nv Jul 29, 2026
faf5aba
[None][fix] CuteDSL MLA decode: keep dtype/heads gate during autotuning
haow-nv Aug 3, 2026
346fb8c
[None][fix] CuteDSL MLA decode: drop (128,4)/(128,8) from fp8 perf al…
haow-nv Aug 4, 2026
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6 changes: 6 additions & 0 deletions .pre-commit-config.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,9 @@ common-files: &common_files |
tensorrt_llm/_torch/custom_ops/userbuffers_custom_ops.py |
tensorrt_llm/_torch/cute_dsl_kernels/__init__.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/__init__.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp16.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp8.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_helpers.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/custom_pipeline.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/dense_blockscaled_gemm_persistent.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/utils.py |
Expand Down Expand Up @@ -911,6 +914,9 @@ legacy-files: &legacy_files |
tensorrt_llm/_torch/custom_ops/userbuffers_custom_ops.py |
tensorrt_llm/_torch/cute_dsl_kernels/__init__.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/__init__.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp16.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp8.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_helpers.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/custom_pipeline.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/dense_blockscaled_gemm_persistent.py |
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/utils.py |
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3 changes: 3 additions & 0 deletions legacy-files.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -132,6 +132,9 @@ tensorrt_llm/_torch/custom_ops/trtllm_gen_custom_ops.py
tensorrt_llm/_torch/custom_ops/userbuffers_custom_ops.py
tensorrt_llm/_torch/cute_dsl_kernels/__init__.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/__init__.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp16.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp8.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_helpers.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/custom_pipeline.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/dense_blockscaled_gemm_persistent.py
tensorrt_llm/_torch/cute_dsl_kernels/blackwell/utils.py
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3 changes: 3 additions & 0 deletions pyproject.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -189,6 +189,9 @@ exclude = [
"tensorrt_llm/_torch/custom_ops/userbuffers_custom_ops.py",
"tensorrt_llm/_torch/cute_dsl_kernels/__init__.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/__init__.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp16.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp8.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_helpers.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/custom_pipeline.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/dense_blockscaled_gemm_persistent.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/utils.py",
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3 changes: 3 additions & 0 deletions ruff-legacy.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -149,6 +149,9 @@ include = [
"tensorrt_llm/_torch/custom_ops/userbuffers_custom_ops.py",
"tensorrt_llm/_torch/cute_dsl_kernels/__init__.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/__init__.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp16.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_decode_fp8.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/attention/mla/mla_helpers.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/custom_pipeline.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/dense_blockscaled_gemm_persistent.py",
"tensorrt_llm/_torch/cute_dsl_kernels/blackwell/utils.py",
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2 changes: 2 additions & 0 deletions tensorrt_llm/_torch/attention_backend/fmha/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@
# See the License for the specific language governing permissions and
# limitations under the License.

from .cute_dsl_mla import CuteDslMlaFmha
from .fallback import FallbackFmha
from .flashinfer_trtllm_gen import FlashInferTrtllmGenFmha
from .interface import Fmha
Expand All @@ -23,6 +24,7 @@
__all__ = [
"DEFAULT_FMHA_LIBS",
"FMHA_LIBS",
"CuteDslMlaFmha",
"FallbackFmha",
"FlashInferTrtllmGenFmha",
"Fmha",
Expand Down
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