Re: [Condor-users] How to troubleshoot MPI job?

[Nigel Teow <nigelt@xxxxxxxxxxxxxxxxx>]

Hi Erik,

thanks for your reply, will try to work on it.

Nigel

Erik Paulson wrote:

> On Wed, Feb 16, 2005 at 11:51:23PM +0800, Nigel Teow wrote:
>  
>
> > My qns are,
> > 1. How do I check which mpich Condor is using to run the job?
> >    
>
> It's whatever MPICH you used to build your program with (ie whatever
> mpicc you used)
>
>  
>
> > 2. What does Condor need from mpich to run the mpi job?
> >    
>
> Nothing. We use 0.0% of MPICH at runtime. It's why you can't/don't need
> to use ssh with the MPI universe. This is very different than every other
> batch system out there, which is why it's so confusing for people.
>
>  
>
> > 3. Is there a way to monitor/observe how Condor runs the mpi job?
> >    
>
> The shadow log on the submit machine, and the starter logs on the execute
> machines. 
>
>  
>
> > 4. How does Condor know which machines to use?
> >
> >    
>
> It matchmakes with the dedicated resources it has. 
>
> http://www.cs.wisc.edu/condor/manual/v6.6.8/3_10Setting_Up.html#sec:Config-Dedicated-Jobs
>
> -Erik
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>  


--
Nigel Teow
Systems Engineer (Cluster Computing Group)
Bioinformatics Institute
Tel: 6478 8298
DID: 6478 8309
Web: www.bii.a-star.edu.sg