HSA kernel driver support for peer-to-peer for AMD GPU devices
configname: CONFIG_HSA_AMD_P2P
Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>HSA kernel driver support for peer-to-peer for AMD GPU devices
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
Enable peer-to-peer (P2P) communication between AMD GPUs over
the PCIe bus. This can improve performance of multi-GPU compute
applications and libraries by enabling GPUs to access data directly
in peer GPUs' memory without intermediate copies in system memory.
This P2P feature is only enabled on compatible chipsets, and between
GPUs with large memory BARs that expose the entire VRAM in PCIe bus
address space within the physical address limits of the GPUs.
the PCIe bus. This can improve performance of multi-GPU compute
applications and libraries by enabling GPUs to access data directly
in peer GPUs' memory without intermediate copies in system memory.
This P2P feature is only enabled on compatible chipsets, and between
GPUs with large memory BARs that expose the entire VRAM in PCIe bus
address space within the physical address limits of the GPUs.