Is there the way to check the version of NCCL ?

[yoshihingis]

This is only question.
There are some versions of NCCL for Normal Ubuntu and DGX-1.
Is there the way to check the version of NCCL which is used in Deep Learning frameworks ?
For examples , Do Nvidia Docker commands have the special command to check the version of NCCL?

[sjeaugey]

You may export NCCL_DEBUG=VERSION to make NCCL print the version during the first ncclCommInitAll or ncclCommInitRank call.

[zrss]

u can also apt search the nccl when u install the nccl by .deb

root@531624e2e79d:/home/hzs# apt search nccl
Sorting... Done
Full Text Search... Done
libnccl-dev/now 2.4.7-1+cuda10.0 amd64 [installed,local]
  NVIDIA Collectives Communication Library (NCCL) Development Files

libnccl2/now 2.4.7-1+cuda10.0 amd64 [installed,local]
  NVIDIA Collectives Communication Library (NCCL) Runtime

nccl-repo-ubuntu1404-2.6.4-ga-cuda10.0/now 1-1 amd64 [installed,local]
  nccl repository configuration files