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Re: [ptp-user] How do I set up a machine set?
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Dear Beth,
Thanks for the information, but let me explain the situation. This is a
Rocks cluster, and the Rocks distribution comes with openMPI, MPICH, and
LAM. OpenMPI is the default implementation, and, for some reason, it is
installed differently from LAM and MPICH. For instance, LAM and MPICH
have their own installation directories, /opt/lam and /opt/mpich, while
openMPI is all over the place, with the include files
in /usr/include/openmpi and the libraries in /usr/lib64/openmpi. There
is a /usr/share/openmpi/bin64, but it contains nothing but links to one
binary, /usr/bin/opal_wrapper-64. and there is no "etc" associated with
any of these directories, nor an openmpi-default-hostfile (certainly not
in /usr/share/openmpi).
But, if PTP looks for <openmpi-install-dir>/etc/openmpi-default-
hostfile, it must know where to look for <openmpi-install-dir>. Is that
an argument that can be passed to PTP/Eclipse? Is it a parameter that
can be changed from within Eclipse? Is it an environment variable I
could change? Is it a default value I could satisfy?
I can assure you that I know (somewhat) what I am doing, since I am able
to switch at will among LAM, MPICH, and openMPI, and all three work very
nicely on the cluster both when building and when running parallel
applications. This is good, because, unfortunately, individual software
packages that use MPI typically prefer one of the three implementations
at the exclusion of the others.
So, if you could possibly let me know how does PTP knwo what is the
openMPI installation directory, then I could probably figure out how to
get my system to work.
Thank you.
-Tudor
On Wed, 2007-08-08 at 14:12 -0400, Beth Tibbitts wrote:
> The hostfile you want is located here:
>
> <openmpi-install-dir> e.g. /usr/local -- wherever you installed OpenMPI
> <openmpi-install-dir>/etc/openmpi-default-hostfile
>
> ...Beth
>
> Beth Tibbitts (859) 243-4981 (TL 545-4981)
> High Productivity Tools / Parallel Tools http://eclipse.org/ptp
> IBM T.J.Watson Research Center
> Mailing Address: IBM Corp., 455 Park Place, Lexington, KY 40511
>
>
>
> Tudor Buican
> <tudor@xxxxxxxx>
> Sent by: To
> ptp-user-bounces@ PTP User list
> eclipse.org <ptp-user@xxxxxxxxxxx>
> cc
>
> 08/08/2007 01:26 Subject
> PM Re: [ptp-user] How do I set up a
> machine set?
>
> Please respond to
> PTP User list
> <ptp-user@eclipse
> .org>
>
>
>
>
>
>
> Thank you. All I have is a file I created in my home directory which
> lists the machines in the cluster and which I give as a parameter to the
> -machinefile option when I call, say, mpirun under openMPI. Is there any
> way of pointing PTP to that file? I can't find any file called openmpi-
> default-hostfile, nor any "etc" directory associated with the openMPI
> installation (I assume that's what Greg had in mind).
>
> Also, is there any document that could be used as a PTP manual? I have
> in mind something covering small but essential issues such as this one.
>
> Thanks again,
> -Tudor
>
> On Wed, 2007-08-08 at 12:51 -0400, Beth Tibbitts wrote:
> > See this:
> > http://dev.eclipse.org/mhonarc/lists/ptp-user/msg00192.html
> >
> > ...Beth
> >
> > Beth Tibbitts (859) 243-4981 (TL 545-4981)
> > High Productivity Tools / Parallel Tools http://eclipse.org/ptp
> > IBM T.J.Watson Research Center
> > Mailing Address: IBM Corp., 455 Park Place, Lexington, KY 40511
> >
> >
> >
>
> > Tudor Buican
>
> > <tudor@xxxxxxxx>
>
> > Sent by:
> To
> > ptp-user-bounces@ ptp-user@xxxxxxxxxxx
>
> > eclipse.org
> cc
> >
>
> >
> Subject
> > 08/08/2007 12:44 [ptp-user] How do I set up a
>
> > PM machine set?
>
> >
>
> >
>
> > Please respond to
>
> > PTP User list
>
> > <ptp-user@eclipse
>
> > .org>
>
> >
>
> >
>
> >
> >
> >
> >
> > Hi.
> >
> > I've just installed Eclipse and PTP and I can get the PTP Runtime
> > perspective. However, the "Machines" view only shows one machine with a
> > question mark on it, and I can't find any way of setting up a set of
> > machines. Nor can I find a manual for PTP.
> >
> > I'm running Eclipse/PTP on the head node of a five-node Rocks 4.3
> > cluster, with openMPI enabled by default.
> >
> > Any help would be greatly appreciated.
> >
> > Thank you.
> > -Tudor
> > --
> > Tudor N. Buican, PhD
> > Managing Member
> > SEA LLC
> > phone: 505-271-9925, 505-818-7303
> > fax: 505-271-9925
> > email: tudor@xxxxxxxx
> >
> >
> > _______________________________________________
> > ptp-user mailing list
> > ptp-user@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/ptp-user
> >
> >
> > _______________________________________________
> > ptp-user mailing list
> > ptp-user@xxxxxxxxxxx
> > https://dev.eclipse.org/mailman/listinfo/ptp-user
> >
> --
> Tudor Buican <tudor@xxxxxxxx>
>
>
> _______________________________________________
> ptp-user mailing list
> ptp-user@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/ptp-user
>
>
> _______________________________________________
> ptp-user mailing list
> ptp-user@xxxxxxxxxxx
> https://dev.eclipse.org/mailman/listinfo/ptp-user
--
Tudor N. Buican, PhD
Managing Member
SEA LLC
phone: 505-271-9925, 505-818-7303
fax: 505-271-9925
email: tudor@xxxxxxxx
