---
id: pr-flashinfer-1548
repo: flashinfer-ai/flashinfer
pr: 1548
title: 'perf: Enable SplitK and fix autotuner for trtllm fp4 fused moe'
author: stslxg-nv
date: '2025-09-05'
url: https://github.com/flashinfer-ai/flashinfer/pull/1548
source_category: upstream-code
architectures:
- sm100
tags:
- moe
- fp4
- gemm
- tile-scheduling
- tcgen05
techniques:
- tile-scheduling
- fine-grained-quantization
hardware_features:
- nvfp4
- fp4
- block-scale
- tma
- tcgen05
kernel_types:
- moe
- grouped-gemm
- fused-kernel
- gemm
languages:
- cuda-cpp
- python
captured_at: 2026-04-16
status: merged
merge_sha: 375a26b6550578799a739d91c3470cd1727f35a4
inclusion_reason: manually curated, Blackwell kernel relevance
changed_paths:
- csrc/trtllm_batched_gemm_runner.cu
- flashinfer/artifacts.py
- flashinfer/fused_moe/core.py
- include/flashinfer/trtllm/batched_gemm/trtllmGen_bmm_export/GemmOptions.h
- tests/test_trtllm_gen_fused_moe.py
head_ref_oid: 67dcaf89215a78ed810d408b5ff8c8b2eb4f64d1
artifact_dir: evidence/pull-bundles/flashinfer/gh-1548
---
# perf: Enable SplitK and fix autotuner for trtllm fp4 fused moe

- Repository: `flashinfer-ai/flashinfer`
- PR: [1548](https://github.com/flashinfer-ai/flashinfer/pull/1548)
- Decision: `manually curated, Blackwell kernel relevance`
- Reason: manually curated, Blackwell kernel relevance

## Changed Paths

- `csrc/trtllm_batched_gemm_runner.cu`
- `flashinfer/artifacts.py`
- `flashinfer/fused_moe/core.py`
- `include/flashinfer/trtllm/batched_gemm/trtllmGen_bmm_export/GemmOptions.h`
- `tests/test_trtllm_gen_fused_moe.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1548`
