Open MPI logo

Open MPI User's Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Open MPI User's mailing list

Subject: Re: [OMPI users] RDMA GPUDirect CUDA...
From: Durga Choudhury (dpchoudh_at_[hidden])
Date: 2012-08-14 16:45:53


Dear OpenMPI developers

I'd like to add my 2 cents that this would be a very desirable feature
enhancement for me as well (and perhaps others).

Best regards
Durga

On Tue, Aug 14, 2012 at 4:29 PM, Zbigniew Koza <zzkoza_at_[hidden]> wrote:

> Hi,
>
> I've just found this information on nVidia's plans regarding enhanced
> support for MPI in their CUDA toolkit:
> http://developer.nvidia.com/**cuda/nvidia-gpudirect>
>
> The idea that two GPUs can talk to each other via network cards without
> CPU as a middleman looks very promising.
> This technology is supposed to be revealed and released in September.
>
> My questions:
>
> 1. Will OpenMPI include RDMA support in its CUDA interface?
> 2. Any idea how much can this technology reduce the CUDA Send/Recv latency?
> 3. Any idea whether this technology will be available for Fermi-class
> Tesla devices or only for Keplers?
>
> Regards,
>
> Z Koza
>
>
>
> ______________________________**_________________
> users mailing list
> users_at_[hidden]
>
http://www.open-mpi.org/**mailman/listinfo.cgi/users>
>