---
id: pr-flashinfer-1835
repo: flashinfer-ai/flashinfer
pr: 1835
title: '[Quantization] Add per-expert global scaling factor for fp4 batched quantize'
author: wenscarl
date: '2025-10-01'
url: https://github.com/flashinfer-ai/flashinfer/pull/1835
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- quantization
techniques: []
hardware_features:
- fp4
kernel_types:
- quantization
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: f765a2a2ec0708edf91a33118e3b2e7c4298b898
inclusion_reason: kernel file changes
changed_paths:
- csrc/nv_internal/tensorrt_llm/kernels/quantization.cuh
- tests/utils/test_fp4_quantize.py
head_ref_oid: e0561fcde6c1e7ae879a9c076182c47f399c37cf
artifact_dir: evidence/pull-bundles/flashinfer/gh-1835
---
# [Quantization] Add per-expert global scaling factor for fp4 batched quantize

- Repository: `flashinfer-ai/flashinfer`
- PR: [1835](https://github.com/flashinfer-ai/flashinfer/pull/1835)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `csrc/nv_internal/tensorrt_llm/kernels/quantization.cuh`
- `tests/utils/test_fp4_quantize.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1835`
