Networking NVIDIA HPC-X Software Toolkit

Changes and New Features

HPC-X current version provides the following changes and new features:

Category

Change Description

HPC-X Content

Updated HPC-X Content section to reflect the communication libraries versions embedded in this HPC-X release:

  • OSU Micro-Benchmarks v7.5.2

  • nccl_spcx_plugin v1.5.0

  • NVIDIA SHARP v3.16

  • UCX v1.22

RMA & Transport Enhancements

Added large-message Remote Direct Memory Access (RMA) rendezvous protocols for GET/PUT operations, alongside improved multi-lane rendezvous selection logic.

[Partial support] Fault Tolerance

Introduced infrastructure for endpoint fault tolerance and recovery.

CUDA & GPU Memory Improvements

Added same-node CUDA Virtual Memory Management (VMM) Inter-Process Communication (IPC) using POSIX file-descriptor handles, CUDA 13.1 Multi-Process Service (MPS) MLOPart topology support, and enhanced CUDA IPC and memory-type handling.

Plugin & Transport Support

Added support for the GDP plugin, including the D2P transport layer.

Platform Defaults

Enabled four rails by default and relaxed memory ordering on Vera platforms.

Bug Fixes

See Bug Fixes.


Last updated: