[mvapich-discuss] use of parallel ib and ethernet interfaces

[Sayantan Sur]

Hi David,

On Tue, Feb 1, 2011 at 10:35 AM, David Minor <David.Minor at orbotech.com> wrote:
> Hi,
>
> I have a cluster with parallel 1G ethernet and IB interfaces.  How can I
> configure/run mvapich2 so that I can switch between them for testing
> purposes?  Also, how do you configure/run on a cluster with mixed eth/ib
> nodes?
>
> I'm a newbie to mvapich2, I've been using Intel MPI which does the interface
> selection automatically or allows you to specify which interface you're
> going to use with an environment variable.  I'm still using mpdboot and
> mpiexec,
>
> I already have mvapich up and running over ib only.
>

Currently, we do not support multiple network interfaces within the
same binary. Please refer to the user guide to configure your
installation to use TCP/IP. You will also need to compile the
application binary separately (i.e. have two binaries - one for 1G
ethernet and another for IB).

http://mvapich.cse.ohio-state.edu/support/user_guide_mvapich2-1.6rc2.html#x1-150004.9

Thanks.

> Regards,
>
> David
>
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>



-- 
Sayantan Sur

Research Scientist
Department of Computer Science
http://www.cse.ohio-state.edu/~surs