USM P2P#

Warning

Experimental features:

  • May be replaced, updated, or removed at any time.

  • Do not require maintaining API/ABI stability of their own additions over time.

  • Do not require conformance testing of their own additions.

Terminology#

“Peer to peer” (“P2P”) is used to indicate a “command” device either accessing or copying the memory located on a separate “peer” device.

Motivation#

Several important projects that the SYCL programming model aims to support use fine-grained peer to peer memory access controls. Two such examples that SYCL supports are Pytorch and Gromacs. This experimental extension to UR aims to provide a portable interface that can call appropriate driver functions to query and control peer memory access across the CUDA, HIP and L0 adapters.

Changelog#

Revision

Changes

1.0

Initial Draft

Contributors#