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[GH-ISSUE #603] [Low Latency][IBGDA] GPU Direct 数据正确性是如何保证的 ? #367
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Originally created by @elevenxiang on GitHub (Apr 15, 2026).
Original GitHub issue: https://github.com/deepseek-ai/DeepEP/issues/603
github.com/deepseek-ai/DeepEP@567632dd59/csrc/kernels/internode_ll.cu (L243-L268)从这里我们看到 数据经过量化 or 拷贝之后,写入 symmetric memory, 普通的 store 指令,理论上数据都 cache 在 L1/L2
但是接下来会 IBGDA,是直接 PCIe 从 HBM 读走数据,这个正确性是如何保证的 ?
谢谢 ~