Difference: ClusterJobs (21 vs. 22)

Revision 222007-01-30 - DanGildea

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How to Use the Cluster Manager

Torque is a system for reserving nodes and running jobs

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  % qsub -l nodes=4:ppn=2
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Handy Scripts

/usr/grads/bin/qwho-cpu - see who is currently using how many cpus on the cluster.

/usr/grads/bin/qsh - ssh'es into node64 and runs qsub. Run "qsh -I" from any machine in the dept. to get a node for interactive use, or "qsh script.sh" to run a batch script.

 -- DanGildea - 14 Dec 2005

Problems

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  -- MattPost - 05 Jul 2006
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My case is using just node64 instead of node64.cs.rochester.edu Another problem I have is that "qsub -l nodes=# ~/test.sh" does not work with # no more than 2. It outputs two files(*.eXXX and *.oXXX) but tmp/ has nothing, so something wrong with this execution. Here test.sh is the example Dan gave above. Yes, "qsub -l nodes=4 ~/test.sh" works but "qsub -l nodes=2 ~/test.sh" does not. Does anyone have same problem?

OK. Add -S path_list solves it. "qsub -S /bin/bash -l nodes=2 ~/test.sh". It seems that torque may ignor the first line(#!/bin/bash) of my script and the execution will use my login shell on the execution host. But I still dont know why it happens only when nodes=2. Anyway, special thanks to Hao!

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If /tmp on a cluster node is full, you may get empty (zero-length) files for the stdout and stderr from your job.
 
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-- XiaoZhang - 25 Jan 2007
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-- DanGildea - 30 Jan 2007
 
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