---
id: pr-vllm-21187
repo: vllm-project/vllm
pr: 21187
title: '[Bug] DeepGemm: Fix TypeError: per_block_cast_to_fp8() missing 1 required positional argument: ''use_ue8m0'' for SM100'
author: yewentao256
date: '2025-07-19'
url: https://github.com/vllm-project/vllm/pull/21187
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- gemm
techniques: []
hardware_features:
- fp8
kernel_types:
- gemm
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 37bd8d6e4c6e37e11ac69cc8844c57ab45dcee3c
inclusion_reason: kernel file changes
changed_paths:
- vllm/utils/deep_gemm.py
head_ref_oid: e76054bd6a0dd34a26c55ffd50ea0a93f4520270
artifact_dir: evidence/pull-bundles/vllm/gh-21187
---
# [Bug] DeepGemm: Fix TypeError: per_block_cast_to_fp8() missing 1 required positional argument: 'use_ue8m0' for SM100

- Repository: `vllm-project/vllm`
- PR: [21187](https://github.com/vllm-project/vllm/pull/21187)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/utils/deep_gemm.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-21187`
