How to upgrade the NCCL version of pytorch 1.7.1 from 2.7.8 to 2.11.4?

1

I’ve tried upgraded NCCL in the system, but not sure how to let the Pytorch use the latest version of the NCCL.

2

You could use the system NCCL installation via:

NCCL_INCLUDE_DIR="/usr/include/" NCCL_LIB_DIR="/usr/lib/" USE_SYSTEM_NCCL=1 python setup.py install

where the env vars point to the folders containing the corresponding NCCL files.