---
id: pr-flashinfer-1324
repo: flashinfer-ai/flashinfer
pr: 1324
title: 'feat: Support logits_soft_cap for Persistent attn; fix kv split limit'
author: Edenzzzz
date: '2025-07-30'
url: https://github.com/flashinfer-ai/flashinfer/pull/1324
source_category: upstream-code
architectures:
- sm100
tags:
- attention
- persistent-kernel
- prefill
techniques:
- persistent-kernel
hardware_features: []
kernel_types:
- attention
- prefill
languages:
- cuda-cpp
captured_at: '2026-04-27'
status: merged
merge_sha: bf3445fc9c79624ac58a24e099f75f38ca09501e
inclusion_reason: kernel file changes
changed_paths:
- benchmarks/bench_batch_attention.py
- csrc/batch_attention.cu
- csrc/batch_attention_customize_config.jinja
- csrc/batch_attention_jit_pybind.cu
- flashinfer/attention.py
- flashinfer/jit/attention/pytorch.py
- include/flashinfer/attention/persistent.cuh
- include/flashinfer/attention/prefill.cuh
- include/flashinfer/attention/scheduler.cuh
- tests/test_batch_attention.py
head_ref_oid: e3fc0053933b5735a62a6ccb0a33d23b578e7e31
artifact_dir: evidence/pull-bundles/flashinfer/gh-1324
---
# feat: Support logits_soft_cap for Persistent attn; fix kv split limit

- Repository: `flashinfer-ai/flashinfer`
- PR: [1324](https://github.com/flashinfer-ai/flashinfer/pull/1324)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `benchmarks/bench_batch_attention.py`
- `csrc/batch_attention.cu`
- `csrc/batch_attention_customize_config.jinja`
- `csrc/batch_attention_jit_pybind.cu`
- `flashinfer/attention.py`
- `flashinfer/jit/attention/pytorch.py`
- `include/flashinfer/attention/persistent.cuh`
- `include/flashinfer/attention/prefill.cuh`
- `include/flashinfer/attention/scheduler.cuh`
- `tests/test_batch_attention.py`

## Evidence Bundle

`evidence/pull-bundles/flashinfer/gh-1324`
