Re: [OMPI users] GPU and CPU timing - OpenMPI and Thrust

2012-05-09 Thread Eduardo Morras
At 15:59 08/05/2012, you wrote: Yep you are correct. I did the same and it worked. When I have more than 3 MPI tasks there is lot of overhead on GPU. But for CPU there is not overhead. All three machines have 4 quad core processors with 3.8 GB RAM. Just wondering why there is no degradation

Re: [OMPI users] GPU and CPU timing - OpenMPI and Thrust

2012-05-08 Thread Rohan Deshpande
come out better. > > ** ** > > ** ** > > *From:* users-boun...@open-mpi.org [mailto:users-boun...@open-mpi.org] *On > Behalf Of *Rohan Deshpande > *Sent:* Monday, May 07, 2012 9:38 PM > *To:* Open MPI Users > *Subject:* [OMPI users] GPU and CPU timing - OpenMPI and Thrust > &g

Re: [OMPI users] GPU and CPU timing - OpenMPI and Thrust

2012-05-08 Thread Rolf vandeVaart
Behalf Of Rohan Deshpande Sent: Monday, May 07, 2012 9:38 PM To: Open MPI Users Subject: [OMPI users] GPU and CPU timing - OpenMPI and Thrust I am running MPI and Thrust code on a cluster and measuring time for calculations. My MPI code - #include "mpi.h" #include #include #include

[OMPI users] GPU and CPU timing - OpenMPI and Thrust

2012-05-07 Thread Rohan Deshpande
I am running MPI and Thrust code on a cluster and measuring time for calculations. My MPI code - #include "mpi.h" #include #include #include #include #include #include #define MASTER 0 #define ARRAYSIZE 2000 int *masterarray,*onearray,*twoarray,*threearray,*fourarray,*fivearray,*s