NCCL Release 2.12.10

This is the NCCL 2.12.10 release notes. For previous NCCL release notes, refer to the NCCL Archives.


NCCL 2.12.10 has been tested with the following:

Key Features and Enhancements

This NCCL release includes the following key features and enhancements.

  • Improved error messages for network errors, with hostname instead of IP address.

Fixed Issues

The following issues have been resolved in NCCL 2.12.10:
  • Fixed bug with collNet.

  • Fixed bug with zero-byte send/recv operations.

  • Fixed NCCL_PARAM implementation taking a lock every time a parameter value was queried.

  • Fixed bug when setting NCCL_IB_QPS_PER_CONNECTION to more than one.