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CPU Usage at another Compute Node?

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Old 07-20-2007
CPU Usage at another Compute Node?
Hi,

I am trying to get the cpu usage of a job/process. The machine that has these jobs is a cluster with 1 master node and 10 compute nodes.

Now, the complexity is that not all jobs are on the master node. So, in order to get the cpu usage of a job at another node, I have to ssh into it and then use the ps command with the process id. The problem is that it takes atleast 3.5 seconds to ssh into one of the compute nodes. Using the ps command after that will cause the cpu usage to have the wrong data, or will have the process expired itself. Is there anything that I can use to get the cpu usage of a process id at another node without having to ssh into it.

Thank you all very much for your time and efforts.

P.S. - Dont know if this matters, but just thought I would give some additional info for Python users. I am using these commands in a Python script, by importing the os class, and using os.popen() for the "ps" command, and os.execv() for the ssh command.
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LEARN ABOUT DEBIAN

condor_prio

condor_prio(1)						      General Commands Manual						    condor_prio(1)

Name
       condor_prio change - priority of jobs in the Condor queue

Synopsis
       condor_prio -p priority+ value- value[-n schedd_name] cluster | cluster.process | username | -a

       condor_prio-p priority+ value- value[-pool pool_name-n schedd_name] cluster | cluster.process | username | -a

Description
       condor_priochanges  the	priority  of  one  or  more  jobs in the Condor queue. If the job identification is given by cluster.process, con-
       dor_prioattempts to change the priority of the single job with job ClassAd attributes  ClusterId and  ProcId .  If  described  by  cluster,
       condor_prioattempts  to change the priority of all processes with the given  ClusterId job ClassAd attribute. If usernameis specified, con-
       dor_prioattempts to change priority of all jobs belonging to that user. For -a, condor_prioattempts to change priority of all jobs  in  the
       queue.

       The user must set a new priority with the -poption, or specify a priority adjustment. The priority of a job can be any integer, with higher
       numbers corresponding to greater priority. For adjustment of the current priority, + valueincreases the priority by the amount  given  with
       value. - valuedecreases the priority by the amount given with value.

       Only the owner of a job or the super user can change the priority.

       The  priority  changed  by  condor_priois  only used when comparing to the priority jobs owned by the same user and submitted from the same
       machine.

Options
       -n schedd_name

	  Change priority of jobs queued at the specified condor_scheddin the local pool.

       -pool pool_name-n schedd_name

	  Change priority of jobs queued at the specified condor_scheddin the specified pool.

Exit Status
       condor_priowill exit with a status value of 0 (zero) upon success, and it will exit with the value 1 (one) upon failure.

Author
       Condor Team, University of Wisconsin-Madison

Copyright
       Copyright (C) 1990-2012 Condor Team, Computer Sciences Department, University of  Wisconsin-Madison,  Madison,  WI.  All  Rights  Reserved.
       Licensed under the Apache License, Version 2.0.

       See the Condor Version 7.8.2 Manualor http://www.condorproject.org/licensefor additional notices. condor-admin@cs.wisc.edu

								  September 2012						    condor_prio(1)