[mvapich-discuss] Is MPI_Alltoallv a GPU aware routine?

[Devendar Bureddy]

Hi Li Luo

You can use device buffer with all the collectives including MPI_Alltoallv

-Devendar


On Thu, Jul 18, 2013 at 1:21 AM, <li.luo at siat.ac.cn> wrote:

>
> Hi,
>
> We know that mvapich is a GPU-aware MPI, device buffer can be sent and
> received directly via
> MPI_Send(s_device,size,…);
> MPI_Recv(r_device,size,…);
>
> So what about other routines such as MPI_Alltoallv, is it able to handle
> device buffer directly? If it can, should the integer array be device
> pointers? Such as int *sendcnts, int *sdispls?
>
>
>
> --
> Li Luo
> Shenzhen Institutes of Advanced Technology
> Address: 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, P.R.China
> Tel: +86-755-86392312，+86-15899753087
> Email: li.luo at siat.ac.cn
>
>
>
>
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>


-- 
Devendar
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