[OMPI users] RDMA over IB between heterogenous processors with different endianness

2008-08-25 Thread Mi Yan
Does OpenMPI always use SEND/RECV protocol between heterogeneous processors with different endianness? I tried btl_openib_flags to be 2 , 4 and 6 respectively to allowe RDMA, but the bandwidth between the two heterogeneous nodes is slow, same as the bandwidth when btl_openib_flags to be 1.

Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness

2008-08-25 Thread Brian W. Barrett
On Mon, 25 Aug 2008, Mi Yan wrote: Does OpenMPI always use SEND/RECV protocol between heterogeneous processors with different endianness? I tried btl_openib_flags to be 2 , 4 and 6 respectively to allowe RDMA, but the bandwidth between the two heterogeneous nodes is slow, same as the bandwidth

Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness

2008-08-25 Thread Mi Yan
Brian, I'm using OpenMPI 1.2.6 (r17946). Could you plese check which version works ? Thanks a lot, Mi "Brian W. Barrett"

Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness

2008-08-25 Thread Jeff Squyres
ent by: users-boun...@open-mpi.org 08/25/2008 01:44 PM Please respond to Open MPI Users To Open MPI Users cc Greg Rodgers/Poughkeepsie/IBM@IBMUS, Brad Benton/Austin/IBM@IBMUS Subject Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness On Mon, 25 Aug 20

Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness

2008-08-25 Thread Brian W. Barrett
[IMAGE] Open MPI Users [IMAGE] cc [IMAGE] Greg Rodgers/Poughkeepsie/IBM@IBMUS, Brad Benton/Austin/IBM@IBMUS [IMAGE] Subject [IMAGE] Re: [OMPI users] RDMA over IB between heterogenous processors with different endianness [IMAGE][IMAGE] On Mon, 25 Aug 2008, Mi Yan wrote: > Does OpenMPI always use SE