---
id: pr-vllm-12931
repo: vllm-project/vllm
pr: 12931
title: '[Misc][Kernel]: Add GPTQAllSpark Quantization'
author: wyajieha
date: '2025-03-01'
url: https://github.com/vllm-project/vllm/pull/12931
source_category: upstream-code
architectures:
- sm100
tags:
- Machete
- benchmark_test
- gemm_quant
techniques:
- fine-grained-quantization
hardware_features: []
kernel_types:
- gemm
languages:
- cuda-cpp
captured_at: '2026-05-16'
status: merged
merge_sha: 6a92ff93e1221ef0a5ff1528c2fdf05cecfb94ec
inclusion_reason: Inspect scale layout, accumulator type, tile/schedule choice, epilogue fusion, and partial-tile guards before deriving a candidate.
changed_paths:
- CMakeLists.txt
- benchmarks/kernels/benchmark_marlin.py
- csrc/quantization/gptq_allspark/allspark_qgemm_w8a16.cu
- csrc/quantization/gptq_allspark/allspark_repack.cu
- csrc/quantization/gptq_allspark/allspark_utils.cuh
- csrc/torch_bindings.cpp
- tests/kernels/test_allspark_gemm.py
- tests/quantization/test_compressed_tensors.py
- vllm/_custom_ops.py
- vllm/model_executor/layers/quantization/kernels/mixed_precision/__init__.py
- vllm/model_executor/layers/quantization/kernels/mixed_precision/allspark.py
- vllm/model_executor/layers/quantization/utils/allspark_utils.py
artifact_dir: evidence/pull-bundles/vllm/gh-12931
head_ref_oid: 1a11e5b18e8187fb4c4a936bd0b2fc0b59a57492
---
# [Misc][Kernel]: Add GPTQAllSpark Quantization

- Repository: `vllm-project/vllm`
- PR: [12931](https://github.com/vllm-project/vllm/pull/12931)
- 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

- `CMakeLists.txt`
- `benchmarks/kernels/benchmark_marlin.py`
- `csrc/quantization/gptq_allspark/allspark_qgemm_w8a16.cu`
- `csrc/quantization/gptq_allspark/allspark_repack.cu`
- `csrc/quantization/gptq_allspark/allspark_utils.cuh`
- `csrc/torch_bindings.cpp`
- `tests/kernels/test_allspark_gemm.py`
- `tests/quantization/test_compressed_tensors.py`
- `vllm/_custom_ops.py`
- `vllm/model_executor/layers/quantization/kernels/mixed_precision/__init__.py`
- `vllm/model_executor/layers/quantization/kernels/mixed_precision/allspark.py`
- `vllm/model_executor/layers/quantization/utils/allspark_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-12931`
