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<TITLE>RE: [mpich-discuss] mpich2 and IPoIB</TITLE>
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<P><FONT SIZE=2> Hi,<BR>
Can you try the latest stable release (1.0.8) of MPICH2 ?<BR>
I just tried entering a non-existant ipaddress in the machinefile using the "-ifhn" option and my program failed (expected failure). A quick look of the smpd debug output shows that smpd is setting the right (as per the "-ifhn" args) environment before launching the process.<BR>
Please let us know if MPICH2 1.0.8 + smpd + "-ifhn" option does not work for you.<BR>
<BR>
Regards,<BR>
Jayesh<BR>
<BR>
-----Original Message-----<BR>
From: Fabio Motezuki [<A HREF="mailto:kenji_japanese@ig.com.br">mailto:kenji_japanese@ig.com.br</A>]<BR>
Sent: Wednesday, October 29, 2008 8:36 PM<BR>
To: Jayesh Krishna<BR>
Cc: mpich-discuss@mcs.anl.gov<BR>
Subject: Re: [mpich-discuss] mpich2 and IPoIB<BR>
<BR>
Returning, I compiled de 1.0.8rc1 source and using mpd the ifhn in the mpd.hosts file worked well, but not with interface name resolution, just using ip directly.<BR>
<BR>
In 1.0.7 I tried to use ifhn in the machinefile for smpd execution, but no effect even when using the ip address of the infiniband interface.<BR>
<BR>
<BR>
Fabio<BR>
<BR>
<BR>
<BR>
Jayesh Krishna escreveu:<BR>
><BR>
> Hi,<BR>
> Yes, you can use the "-ifhn" option in the machinefile with smpd.<BR>
> Let us know if you have any problems.<BR>
><BR>
> Regards,<BR>
> Jayesh<BR>
><BR>
> -----Original Message-----<BR>
> From: owner-mpich-discuss@mcs.anl.gov<BR>
> [<A HREF="mailto:owner-mpich-discuss@mcs.anl.gov">mailto:owner-mpich-discuss@mcs.anl.gov</A>] On Behalf Of Rajeev Thakur<BR>
> Sent: Monday, October 27, 2008 2:22 PM<BR>
> To: mpich-discuss@mcs.anl.gov<BR>
> Subject: RE: [mpich-discuss] mpich2 and IPoIB<BR>
><BR>
> Probably :-). From doing a grep in the smpd directory it looks like it<BR>
> might accept "-ifhn hostname"<BR>
><BR>
> Rajeev<BR>
><BR>
> > -----Original Message-----<BR>
> > From: owner-mpich-discuss@mcs.anl.gov<BR>
> > [<A HREF="mailto:owner-mpich-discuss@mcs.anl.gov">mailto:owner-mpich-discuss@mcs.anl.gov</A>] On Behalf Of Fabio Motezuki<BR>
> > Sent: Monday, October 27, 2008 2:12 PM<BR>
> > To: mpich-discuss@mcs.anl.gov<BR>
> > Subject: Re: [mpich-discuss] mpich2 and IPoIB<BR>
> ><BR>
> > Thanks Rajeev,<BR>
> ><BR>
> > I'll try it, perhaps is there any options like this for smpd?<BR>
> ><BR>
> > Fabio<BR>
> ><BR>
> ><BR>
> > Rajeev Thakur escreveu:<BR>
> > > Try specifying the interface name using ifhn= in the<BR>
> > mpd.hosts file as<BR>
> > > described in Sec 5.1.5 of the installation guide.<BR>
> > ><BR>
> > <A HREF="http://www.mcs.anl.gov/research/projects/mpich2/documentation/">http://www.mcs.anl.gov/research/projects/mpich2/documentation/</A><BR>
> > files/mpich2-1<BR>
> > > .0.8-installguide.pdf<BR>
> > ><BR>
> > > Rajeev<BR>
> > ><BR>
> > > <BR>
> > >> -----Original Message-----<BR>
> > >> From: owner-mpich-discuss@mcs.anl.gov<BR>
> > >> [<A HREF="mailto:owner-mpich-discuss@mcs.anl.gov">mailto:owner-mpich-discuss@mcs.anl.gov</A>] On Behalf Of<BR>
> > Fabio Motezuki<BR>
> > >> Sent: Monday, October 27, 2008 5:35 AM<BR>
> > >> To: mpich-discuss@mcs.anl.gov<BR>
> > >> Subject: [mpich-discuss] mpich2 and IPoIB<BR>
> > >><BR>
> > >> Hi all,<BR>
> > >><BR>
> > >> I'm working on a cluster where each node is connected with two<BR>
> > >> networks:<BR>
> > >><BR>
> > >> eth0 - gigabit ethernet<BR>
> > >> ib0 - IP over infiniband<BR>
> > >><BR>
> > >> I would like to use the ib0 net for all mpi communications, but<BR>
> > >> when I start the example cpi all comunications go through eth0 is<BR>
> > this the<BR>
> > >> expected behavior?<BR>
> > >><BR>
> > >> I'm launching the example program with "mpiexec<BR>
> > -machinefile mf -n 16<BR>
> > >> ./cpi" where the file "mf" contains the ip address of infiniband<BR>
> > >> cards.<BR>
> > >><BR>
> > >> Fabio<BR>
> > >><BR>
> > >><BR>
> > >> <BR>
> > ><BR>
> > ><BR>
> > > <BR>
> ><BR>
> ><BR>
><BR>
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