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clusterbasics

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clusterbasics [2016/05/24 22:28]
mgstauff [Jobs Must be Submitted from chead] 		clusterbasics [2017/09/25 17:24] (current)
mgstauff [Introduction to The Cluster]
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 In either case, the job scheduler takes care of finding a compute node to do the actual work of running your batch job or interactive session (both are called 'jobs' by the scheduler, actually). In either case, the job scheduler takes care of finding a compute node to do the actual work of running your batch job or interactive session (both are called 'jobs' by the scheduler, actually).
  
-The cluster is running CentOS 6.3 with Rocks 6.1. This is the software that manages the collection of front and compute nodes, i.e. the cluster - Rocks is //not// the job scheduler. The jobs scheduler is SGE (Actually SoGE, Son of Grid Engine, see below).+The cluster is running CentOS 6.9 (Linux operating system version) with Rocks 6.2 (Cluster management system). This is the software that manages the collection of front and compute nodes, i.e. the cluster - Rocks is //not// the job scheduler. The jobs scheduler is SGE (Actually SoGE, Son of Grid Engine, see below).
  
 ===== General Cluster Diagram ===== ===== General Cluster Diagram =====
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 If you're running something quick like using fslview or ITK-SNAP to look at an image and do simple manipulations, then it's ok to use the front end instead of an interactive job. This actually makes for more efficient use of the compute nodes since you won't be tying up a qlogin session when you're not really use much computational power. Just don't forget to exit your app when you're done. The important thing is not to run computationally intensive jobs on the front end, like using Matlab to run an analysis on some data. If you're running something quick like using fslview or ITK-SNAP to look at an image and do simple manipulations, then it's ok to use the front end instead of an interactive job. This actually makes for more efficient use of the compute nodes since you won't be tying up a qlogin session when you're not really use much computational power. Just don't forget to exit your app when you're done. The important thing is not to run computationally intensive jobs on the front end, like using Matlab to run an analysis on some data.
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-__Certain FSL Commands__ 
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-Some FSL commands submit their own qsub jobs so must be run from the front end. 
-[[fsl_usage|See details here.]] 
  
 **Limits and TERMINATION** **Limits and TERMINATION**
clusterbasics.1464128912.txt.gz · Last modified: 2016/05/24 22:28 by mgstauff

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