---
id: pr-deepgemm-86
repo: deepseek-ai/DeepGEMM
pr: 86
title: Use swizzling instead of padding
author: LyricZhao
date: '2025-04-14'
url: https://github.com/deepseek-ai/DeepGEMM/pull/86
source_category: upstream-code
architectures:
- sm100
tags:
- compiler_runtime
- gemm_quant
- moe_routing
- recent-kernel-path
techniques:
- fine-grained-quantization
hardware_features:
- fp8
kernel_types:
- compiler
- gemm
- moe
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 37aa127451034f760e1a0fc73a06de74c0f56ae4
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- README.md
- deep_gemm/include/deep_gemm/fp8_gemm.cuh
- deep_gemm/jit/compiler.py
- deep_gemm/jit_kernels/gemm.py
- deep_gemm/jit_kernels/m_grouped_gemm.py
- indexing/main.cu
artifact_dir: evidence/pull-bundles/deepgemm/gh-86
head_ref_oid: 406c63070996d012fc38203f23545b8fa65b1b2f
---
# Use swizzling instead of padding

- Repository: `deepseek-ai/DeepGEMM`
- PR: [86](https://github.com/deepseek-ai/DeepGEMM/pull/86)
- 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

- `README.md`
- `deep_gemm/include/deep_gemm/fp8_gemm.cuh`
- `deep_gemm/jit/compiler.py`
- `deep_gemm/jit_kernels/gemm.py`
- `deep_gemm/jit_kernels/m_grouped_gemm.py`
- `indexing/main.cu`

## Evidence Bundle

`evidence/pull-bundles/deepgemm/gh-86`
