So if you were using mpirun from the head node (the one w/ the proper machinefile to begin with), then it should have worked too. Distributing the machinefile only impacts runs if you're running mpirun from the compute nodes of course.
Debugging mpirun... the best way to debug the problem depends on what the problem is of course. The debug options in mpirun are more for the applications than mpirun itself I think. What sort of problem are you having?


Jeremy

At 10:21 AM 9/25/2003 -0700, Bernard Li wrote:
Hi Jeremy:

I was using mpiBLAST with PBS previously but it didn't quite work - so right now I'm just trying to use mpirun from the command-line. I will try pushing out the machinefile to all the nodes and give it a shot again.

In general, what's the best way of debugging problems using mpirun? I tried using the debug options with mpirun to display more verbose information.

Thanks,

Bernard

Jeremy Enos wrote:

If you're using mpirun on your compute nodes, you'll need to specify a machinefile. You either have to custom create one or, if in the PBS environment, use -machinefile $PBS_NODEFILE. It also won't hurt to push out the machinefile from the server which is correctly set up.
Jeremy
At 05:34 PM 9/24/2003 -0700, Bernard Li wrote:


Hi list:

Currently trying to get our mpiBLAST working - I tend to think that there might be a problem with mpich itself because I tried to run the tstmachines script and it gave me a bunch of errors.

Just a quick question - the file:

/opt/mpich-1.2.5.10-ch_p4-gcc/share/machines.LINUX

on the OSCAR head node has correct entries for our slave nodes - however, the same file under the other nodes, have I guess default 'mpich' entries (i.e. cartwire.ncsa.uiuc.edu).

Is this a problem? Should I propagate the right file to all the nodes?

Thanks,

Bernard



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