Re: [Condor-users] MPI Setup

[Rok Roskar <roskar@xxxxxxxxxxxxxxxxxxxx>]

sorry, i forgot to add the link to the short condor-mpi primer I 
mentioned in my previous email:

http://www.astro.washington.edu/roskar/astronomy/condor-mpi.html

it mostly pertains to the parallel gravity code we use here, but maybe 
you'll find parts of it useful.


-----------------------------------------
Rok Roskar
University of Washington
Department of Astronomy

On Feb 2, 2006, at 5:26 PM, rnayar@xxxxxxxx wrote:

> Thanks for the great tip and help, I was wondering if I was going to 
> need to
> set up password-less ssh login but it looks like condor takes care of 
> all that
> using its own version of RSH. So essentially you just need to modify 
> your
> global config file with the paramaters as you stated
>
> DedicatedScheduler = "DedicatedScheduler@xxxxxxxxxxxxxxxxxxxxxxxxxxxx"
> STARTD_EXPRS = $(STARTD_EXPRS), DedicatedScheduler
> MPI_CONDOR_RSH_PATH = /net/condor/sbin
>
> So far my test setup is 2 computers both running FC3 and the 
> headnode's /home
> is mounted automatically when ever a client accesses its own home. My 
> next task
> was to get MPI up and running.
>
> thanks for your help, I'll let you guys know if i run into anything 
> weird.
>
> Danny
>
>
>
>
>
>
>
>
>
>
> Quoting "Junaid N. Sahibzada" <sjunaidn@xxxxxxxxx>:
>
> > Hi Rok
> >
> >   can you tell me if MPICH2 works with condor 6.7?
> >
> >   also, i am having trouble setting up a ring. i have individual mpds
> > running on all machines but they dont seem to know about each other.
> >
> >   also, can you tell me if i need to setup a ring while using condor?
> >
> >   and why are you saying that i dont need MPI on condor?
> >
> >   regards
> >
> > Rok Roskar <roskar@xxxxxxxxxxxxxxxxxxxx> wrote:  I've put together a
> > condor-MPI tutorial for the particular code that we
> > use here. It doesn't really involve much about the specifics of the
> > condor administrative end though... I've set it up here, so that MPI
> > jobs behave in the same way as single-processor jobs, which means that
> > they can get preempted, evicted etc. The MPI "cluster" is actually a
> > set of 18 computer lab desktop machines, linked together with a
> > high-speed network. This was accomplished very easily by simply
> > including the following lines:
> >
> > DedicatedScheduler = "DedicatedScheduler@xxxxxxxxxxxxxxxxxxxxxxxxxxxx"
> > STARTD_EXPRS = $(STARTD_EXPRS), DedicatedScheduler
> > MPI_CONDOR_RSH_PATH = /net/condor/sbin
> >
> > Note that the last line is not specified in the manual, and the first
> > line has regular quotes, not two single quotes like in the manual. 
> > Also
> > note that I didn't change any policies for these resources, all types
> > of job universes abide by the same rules.
> >
> > I then had to recompile my code using mpich - the mpich download page
> > actually has a condor version.
> >
> > That was it. I do have passwordless ssh logins configured, but I don't
> > even think you need that to run mpi in condor.
> >
> > Rok
> >
> > -----------------------------------------
> > Rok Roskar
> > University of Washington
> > Department of Astronomy
> >
> > On Feb 2, 2006, at 3:02 PM, rnayar@xxxxxxxx wrote:
> >
> > > Hello everyone, for those of you who actually got MPI jobs up and
> > > running can
> > > you give us a greater insight as to how you accomplished this? 
> > > Through
> > > the
> > > installation of MPI, any type of configurations (i.e. passwordless 
> > > ssh
> > > logins
> > > etc). I've noticed that alot of people seem to be running MPI apps
> > > perhaps we
> > > should throw together some sort of "How to MPI" thread.
> > >
> > > thanks
> > >
> > > Danny
> > > _______________________________________________
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> >
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> >
> >
> > Junaid N. Sahibzada
> > Cell # (+61) 404 998 494
> > 284/9 Crystal St. Waterloo, 2017, NSW, Australia
> > International Student MSc Internetworking, UTS, Australia
> > Bachelor of Information Technology, NUST, Pakistan
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > 			
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