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[PR #142] [MERGED] Fix DeepEP cannot be used together with code that needs GIL such as Mooncake transfer engine #442

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opened 2026-10-26 10:00:48 +00:00 by bsakaguchi · 0 comments
bsakaguchi commented 2026-10-26 10:00:48 +00:00
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📋 Pull Request Information

Original PR: https://github.com/deepseek-ai/DeepEP/pull/142
Author: @fzyzcjy
Created: 4/29/2025
Status: ✅ Merged
Merged: 5/8/2025
Merged by: @LyricZhao

Base: main ← Head: patch-3

📝 Commits (2)

📊 Changes

1 file changed (+5 additions, -0 deletions)

View changed files

📝 csrc/deep_ep.cpp (+5 -0)

📄 Description

When using DeepEP with Mooncake transfer engine, DeepEP's dispatch will hold the GIL for a long time, and thus other libraries such as Mooncake transfer engine, which uses Python code in another thread, cannot obtain the GIL and thus get stuck. Therefore, in this PR, I make DeepEP release GIL to fix this.

🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.

## 📋 Pull Request Information **Original PR:** https://github.com/deepseek-ai/DeepEP/pull/142 **Author:** [@fzyzcjy](https://github.com/fzyzcjy) **Created:** 4/29/2025 **Status:** ✅ Merged **Merged:** 5/8/2025 **Merged by:** [@LyricZhao](https://github.com/LyricZhao) **Base:** `main` ← **Head:** `patch-3` --- ### 📝 Commits (2) - [`23ded3b`](https://github.com/deepseek-ai/DeepEP/commit/23ded3bd8d692755674ffb9ba18794701b6090e6) Update deep_ep.cpp - [`adc6e24`](https://github.com/deepseek-ai/DeepEP/commit/adc6e24cb053947101f24cf048961eab22ddfc5f) Update deep_ep.cpp ### 📊 Changes **1 file changed** (+5 additions, -0 deletions) <details> <summary>View changed files</summary> 📝 `csrc/deep_ep.cpp` (+5 -0) </details> ### 📄 Description When using DeepEP with Mooncake transfer engine, DeepEP's dispatch will hold the GIL for a long time, and thus other libraries such as Mooncake transfer engine, which uses Python code in another thread, cannot obtain the GIL and thus get stuck. Therefore, in this PR, I make DeepEP release GIL to fix this. --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>
bsakaguchi 2026-10-26 10:00:48 +00:00
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