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Re: [Condor-users] How to troubleshoot MPI job?
- Date: Wed, 16 Feb 2005 13:00:06 -0600
- From: Erik Paulson <epaulson@xxxxxxxxxxx>
- Subject: Re: [Condor-users] How to troubleshoot MPI job?
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
> 4. How does Condor know which machines to use?
It matchmakes with the dedicated resources it has.