[mpich-discuss] mpich2 and IPoIB

[Rajeev Thakur]

Try specifying the interface name using ifhn= in the mpd.hosts file as
described in Sec 5.1.5 of the installation guide.
http://www.mcs.anl.gov/research/projects/mpich2/documentation/files/mpich2-1
.0.8-installguide.pdf

Rajeev 

> -----Original Message-----
> From: owner-mpich-discuss at mcs.anl.gov 
> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf Of Fabio Motezuki
> Sent: Monday, October 27, 2008 5:35 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [mpich-discuss] mpich2 and IPoIB
> 
> Hi all,
> 
> I'm working on a cluster where each node is connected with 
> two networks:
> 
> eth0 - gigabit ethernet
> ib0 - IP over infiniband
> 
> I would like to use the ib0 net for all mpi communications, 
> but when I 
> start the example cpi all comunications go through eth0 is this the 
> expected behavior?
> 
> I'm launching the example program with "mpiexec -machinefile mf -n 16 
> ./cpi" where the file "mf" contains the ip address of 
> infiniband cards.
> 
> Fabio
> 
>