Re: [PATCH rdma-core 3/5] pyverbs: Add dma-buf based MR support

Jason Gunthorpe
2020-11-24T15:36:31Z

On Tue, Nov 24, 2020 at 04:16:58PM +0100, Daniel Vetter wrote:

> Compute is the worst, because opencl is widely considered a mistake (maybe
> opencl 3 is better, but nvidia is stuck on 1.2). The actually used stuff is
> cuda (nvidia-only), rocm (amd-only) and now with intel also playing we
> have xe (intel-only).

> It's pretty glorious :-/

I enjoyed how the Intel version of CUDA is called "OneAPI" not "Third
API" ;)

Hopefuly xe compute won't leave a lot of half finished abandoned
kernel code like Xeon Phi did :(

> Also I think we discussed this already, but for actual p2p the intel
> patches aren't in upstream yet. We have some internally, but with very
> broken locking (in the process of getting fixed up, but it's taking time).

Someone needs to say this test works on a real system with an
unpatched upstream driver.

I thought AMD had the needed parts merged?

Jason