Re: [Condor-users] mpi and dedicated scheduler configuration

[Erik Paulson <epaulson@xxxxxxxxxxx>]

On Tue, Jun 22, 2004 at 03:11:45PM -0700, Jonathan Zweig wrote:
> Hello,
> Urgent... we here at UCLA Medical Imaging Informatics have a condor grid with a head node which is running Solaris 9 and the rest of the nodes are running Windows XP.  We would like to run MPI Java jobs on this grid.  The first step, according to the online Condor manual is the "Selecting and Setting up your Dedicated Scheduler" section, as well as the "Configuration for Dedicated Resources" section.  The first thing I don't understand is the configuration file.  I understand that I need to edit DedicatedScheduler = ``DedicatedScheduler@xxxxxxxxxxxxxx'' and STARTD_EXPRS = $(STARTD_EXPRS), DedicatedScheduler , but which file do I edit?  I tried editing $CONDOR_HOME/etc/examples/condor_config.local.dedicated.resource , but is that just an example file or is that the actual file that I need to edit?  
> 

It's an example file. You need to edit the configuration file on machines
you want to have as a dedicated resource. On a Windows install, I think 
the default is C:\condor\etc\condor_config. Add the contents of 
condor_config.local.dediated.resource to your config file (edited 
appropriately!)

> Secondly, is this whole idea of running MPI Java across a heterogeneous grid even possible?  Does Condor support MPI Java at all?  Someone please provide me with an explanation.  Thanks so much!
> 

It's not likely to work. The current MPI implementation is pretty heart-set
on using MPICH 1.2.2, 3 or 4. 

What Java MPI implementation are you using? 
http://www.hpjava.org/mpiJava.html ?


-Erik