---
id: pr-tensorrt-llm-13452
repo: NVIDIA/TensorRT-LLM
pr: 13452
title: '[TRTLLM-11285][perf] Force enable TF32 tensor cores for DSA indexer fused GEMM'
author: peihu-nv
date: '2026-05-01'
url: https://github.com/NVIDIA/TensorRT-LLM/pull/13452
source_category: upstream-code
architectures:
- sm100
tags:
- DSA
- attention_kv
- benchmark_test
- cuda kernel
- gemm_quant
techniques:
- fine-grained-quantization
- kernel-fusion
hardware_features: []
kernel_types:
- attention
- gemm
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 24bd7a2c20af9b2c9938a546c2c4693bbf9a700e
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- tensorrt_llm/_torch/attention_backend/sparse/dsa.py
artifact_dir: evidence/pull-bundles/tensorrt-llm/gh-13452
head_ref_oid: 89f335469e750e0870abf80ec058ecfa0711e037
---
# [TRTLLM-11285][perf] Force enable TF32 tensor cores for DSA indexer fused GEMM

- Repository: `NVIDIA/TensorRT-LLM`
- PR: [13452](https://github.com/NVIDIA/TensorRT-LLM/pull/13452)
- Decision: `Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.`
- Reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.

## Changed Paths

- `tensorrt_llm/_torch/attention_backend/sparse/dsa.py`

## Evidence Bundle

`evidence/pull-bundles/tensorrt-llm/gh-13452`
