search

NVIDIA / nccl

Optimized primitives for collective multi-GPU communication
Other
3.24k stars 821 forks source link

Is there a performance difference between dmabuf and peer memory？ #908

Open tangrc99 opened 1 year ago

tangrc99 commented 1 year ago

NCCL select the dmabuf as first considered path to use GDR, is there a performace difference between dmabuf and peer memory？

sjeaugey commented 1 year ago

No, there is no performance difference.

tangrc99 commented 1 year ago

Thanks !!!