Update deep_ep intranode & internode kernels #74284
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lshpku force-pushed the update-deepep-079c5a4 branch 3 times, most recently from 117bd81 to 5f846fc Compare lshpku force-pushed the update-deepep-079c5a4 branch from 5f846fc to a3d0d9e Compare 
zhangbo9674 approved these changes Aug 12, 2025
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PR Category
Communication Library
PR Types
Performance
Description
将 intranode & internode 的底层 kernel 更新至官方commit：deepseek-ai/DeepEP@079c5a4 (7月14日)
该 commit 已包含 TMA 优化 internode 性能
本PR修改内容
将
intranode.cu、internode.cu、configs.cuh、ibgda_device.cuh直接拷贝过来将
launch.cuh、utils.cuh拷贝过来，但保留 low_latency 仍然依赖的 deprecated 的函数（low_latency 由推理同学维护，不做修改）将
runtime.cu和layout.cu拷贝过来，合并成一个runtime.cu（之前也是这样合并的）将
api.cuh中 intranode & internode 的部分拷贝过来对
deep_ep.hpp中 Buffer 的成员变量做小幅修改对
deep_ep.cpp中 Buffer 的构造函数和 sync 方法，以及涉及 intranode & internode 调用的地方做了修改，正确设置新增的成员变量，适配新的 CUDA 层接口在
types.h里增加一个 helper 方法正确性测试
使用 test_intranode.py 和 test_internode.py（2、4、8机）进行了单测，均通过
使用DeepseekV3进行了多种PP、EP配置的端到端收敛性测试，均通过
性能变化
新版的优势在于可以用更少的SM达到相同的通信带宽，从而为计算分配更多的SM
例如在DeepseekV3上，deepep sm 20->14， deepgemm sm 112->118，端到端提升 1-2%
Pcard-85711