---
id: pr-deepgemm-81
repo: deepseek-ai/DeepGEMM
pr: 81
title: 'Performance: BlockTile 256x128 optimizations enable 1500+ TF FP8'
author: sazczmh
date: '2025-04-09'
url: https://github.com/deepseek-ai/DeepGEMM/pull/81
source_category: upstream-code
architectures:
- sm100
tags:
- benchmark_test
- fp8
- gemm_quant
techniques:
- cache-policy
- fine-grained-quantization
hardware_features:
- fp8
kernel_types:
- gemm
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: fed3e4d701b36bdba861f8f7fc10f2155802fdf1
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_kernels/gemm.py
artifact_dir: evidence/pull-bundles/deepgemm/gh-81
head_ref_oid: 989c9e3694638dd02aa36b4d8cb42339305caa85
---
# Performance: BlockTile 256x128 optimizations enable 1500+ TF FP8

- Repository: `deepseek-ai/DeepGEMM`
- PR: [81](https://github.com/deepseek-ai/DeepGEMM/pull/81)
- 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_kernels/gemm.py`

## Evidence Bundle

`evidence/pull-bundles/deepgemm/gh-81`
