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

[li.luo at siat.ac.cn]

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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