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cluster:managing_jobs

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cluster:managing_jobs [2021/05/03 02:47] – abraslavcluster:managing_jobs [2024/11/11 20:30] (current) – mcloughlin
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 ======Managing Jobs====== ======Managing Jobs======
-=====Managing Jobs on the Cluster===== 
-The above commands work well when you have not logged out of the cluster while running the job.  Because of the cluster's [[Hardware_Configuration|setup]], there are many nodes that could be running your job.  When you log in to the cluster, you are automatically sent to a particular node //econ7// through //econ18//.  This might not be the same node that is running your job. To get to a particular nod use 
- <code>ssh econ7</code> 
  
-And then to see processes that are running under your username in this node: 
- <code>ps ux</code> 
- 
-======Renice-ing===== 
-You can change how many CPU cycles are given to your job by using the command <code>renice</code>.  Once you know the process id, you can use the command: 
- <code>renice -n <priority> -p <process id></code> 
-to change the [[nice]]ness of your process.  If you are running a computationally intensive job, please set your job to a high niceness level, so that you don't monopolize cluster resources :) 
 =====General Job Management===== =====General Job Management=====
  
-Once you have a job running, you might want to change it's priority (<code>renice</code>) or stop it.  To check on the list of running jobs, use the command <code>top</code>. +Once you have a job running, you might want to change its priority or stop it.  To check on the list of running jobs, use the command <code>htop</code>  
- +
-[[http://unixhelp.ed.ac.uk/CGI/man-cgi?top|Top]] is an interactive program that dynamically lists processes running on the server.  Pressing '?' will get you to a help page.  Pressing 'q' gets out of the help page, and also quits top altogether.  +
  
 You can also see all running jobs statically with You can also see all running jobs statically with
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 Alternatively, press 'q' to stop top.  Then, type use the <code>kill</code> command. Alternatively, press 'q' to stop top.  Then, type use the <code>kill</code> command.
  <code>kill <process id></code>  <code>kill <process id></code>
 +
 +======Renice-ing=====
 +You can change how many CPU cycles are given to your job by using the command <code>renice</code>.  Once you know the process id, you can use the command:
 + <code>renice -n <priority> -p <process id></code>
 +to change the niceness of your process.  If you are running a computationally intensive job, please set your job to a high niceness level, so that you don't monopolize cluster resources :)
  
cluster/managing_jobs.1620010075.txt.gz · Last modified: (external edit)

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