---
id: pr-deepgemm-74
repo: deepseek-ai/DeepGEMM
pr: 74
title: 'Performance: Larger BlockTile optimizations enable 1470+ TF FP8 on the "H800"-SXM'
author: sazczmh
date: '2025-03-25'
url: https://github.com/deepseek-ai/DeepGEMM/pull/74
source_category: upstream-code
architectures:
- sm100
tags:
- TMA
- benchmark_test
- fp8
- gemm
- gemm_quant
- grouped gemm
- moe
- moe_routing
techniques:
- async-copy
- cache-policy
- fine-grained-quantization
- tile-scheduling
hardware_features:
- fp8
- tma
kernel_types:
- gemm
- moe
- norm
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: a5645d7afa327776e18c5dab3002dd747ebaf685
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/include/deep_gemm/mma_utils.cuh
- deep_gemm/include/deep_gemm/scheduler.cuh
- deep_gemm/include/deep_gemm/utils.cuh
- deep_gemm/jit/compiler.py
- deep_gemm/jit/template.py
- deep_gemm/jit_kernels/gemm.py
- deep_gemm/jit_kernels/m_grouped_gemm.py
artifact_dir: evidence/pull-bundles/deepgemm/gh-74
head_ref_oid: 55ab91f72f76e8a6db0e86282c3169a88d93df1b
---
# Performance: Larger BlockTile optimizations enable 1470+ TF FP8 on the "H800"-SXM

- Repository: `deepseek-ai/DeepGEMM`
- PR: [74](https://github.com/deepseek-ai/DeepGEMM/pull/74)
- 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/include/deep_gemm/mma_utils.cuh`
- `deep_gemm/include/deep_gemm/scheduler.cuh`
- `deep_gemm/include/deep_gemm/utils.cuh`
- `deep_gemm/jit/compiler.py`
- `deep_gemm/jit/template.py`
- `deep_gemm/jit_kernels/gemm.py`
- `deep_gemm/jit_kernels/m_grouped_gemm.py`

## Evidence Bundle

`evidence/pull-bundles/deepgemm/gh-74`
