AMD Kernel Driver Enabling Peer-To-Peer Multi-GPU Compute For Linux

[phoronix]

Phoronix: AMD Kernel Driver Enabling Peer-To-Peer Multi-GPU Compute For Linux

A new patch series posted today by AMD is enabling peer-to-peer support within their AMDKFD kernel compute driver for allowing communication between multiple AMD GPUs over the PCIe bus without needing intermediate copies through system memory. In turn this should help with the multi-GPU compute performance for the Radeon ROCm stack...

https://www.phoronix.com/scan.php?page=news_item&px=AMD-Multi-GPU-Compute-P2P

[Zeioth]

Anything that can potentially help sway to copy from one GPU to another would be awesome for Multi-gpu/Multi-monitor setups.

[tildearrow]

I wish there was a direct AMD to NVIDIA GPU memory transfer method...
My extremely niche and possibly unique use case: Render on AMD card, capture screen and 4:4:4 encode on NVIDIA card.

[agd5f]

There are already optimizations for this in mesa for GLX (merged) and EGL (in progress) assuming you have PCI_P2PDMA and DMABUF_MOVE_NOTIFY enabled in your kernel config and your platform supports PCIe P2P DMA.

https://gitlab.freedesktop.org/mesa/...requests/10595
https://gitlab.freedesktop.org/mesa/...requests/13422

[torbido]

agd5f

Can I use AMD GPU for rendering and Nvidia GPU for PhysX?

[Nille]

agd5f

Can I use AMD GPU for rendering and Nvidia GPU for PhysX?

Are there new games that still support physx on the GPU? That was only a handful and nvidia block that. i know that there where some patches that unlock that again but i dont know if they are still on new cards available.

[torbido]

Are there new games that still support physx on the GPU? That was only a handful and nvidia block that. i know that there where some patches that unlock that again but i dont know if they are still on new cards available.

Control (2019), but I just want to replay some old games that support Nvidia PhysX.

[Nille]

Control (2019), but I just want to replay some old games that support Nvidia PhysX.

that game supports it only on the cpu as far as i know and can find.

physx on the gpu is since years abandoned and ony the physx on the CPU are still in use.

https://list.fandom.com/wiki/List_of_games_with_hardware-accelerated_PhysX_support

[torbido]

that game supports it only on the cpu as far as i know and can find.

physx on the gpu is since years abandoned and ony the physx on the CPU are still in use.

https://list.fandom.com/wiki/List_of..._PhysX_support

I do not care about Control (2019). I just want to replay some old games that support Nvidia PhysX like: Dark Void, Mafia II, Alice: Madness Returns, and Batman Arkham games.

[Nille]

Well, they work, but nvidia just dont let you use physx on the gpu if you render on a amd card.