How Nvidia NCCL build the GPU topology [closed]

问题

Closed. This question needs details or clarity. It is not currently accepting answers.

---

Want to improve this question? Add details and clarify the problem by editing this post.

Closed 9 days ago.

I am reading NCCL code on Nvidia Github, it is to hard to understand how topology is build.

Is there any material or paper can explain this process.

I think maybe Nvidia has released some paper before is also helpful for me.

Is there any reference paper can explain function ncclTopoCompute().

Thanks !

来源：https://stackoverflow.com/questions/59264714/how-nvidia-nccl-build-the-gpu-topology