[openib-general] mpi over IB

[Jeff Squyres]

During the installation process, the OFED installer should have asked  
you if you wanted to install Open MPI and/or MVAPICH.  Both of these  
MPI implementations are capable of communicating natively over the IB  
interface.

Running MPI applications with Open MPI should natively choose the IB  
interface at run time if your IB network is up and running properly  
(e.g., try running ibv_devinfo to ensure that ports are listed in the  
PORT_ACTIVE state, etc.).  I assume that the same is true with  
MVAPICH as well.



On Feb 27, 2007, at 6:35 AM, Bala wrote:

> Hi All,
>        We have build and installed OFED-1.1
> on RHEL-4 machines, while compiling selected
> mpi support, pls through some light on how
> to use mpi over IB interface, using what
> modules etc. or do we need to install separate
> mpi software to use.
>
> thanks in advance,
> -bala-
>
>
>
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-- 
Jeff Squyres
Server Virtualization Business Unit
Cisco Systems