Difference: T3_Guide (3 vs. 4)

Revision 42008-04-28 - ZhangXiaomei

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META TOPICPARENT name="WebHome"
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Usage of CMS T3

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  • local: /home/cms/<username>
  • afs: /afs/ihep.ac.cn/users/z/zhangxm
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Disk space

  • There are three kinds of disk space seperately for home, software, data
   home: /home/cms/<username>, about 466GB, each 40GB
   software: /cms/cmsd01/public/cms_software
   data: /cms/cmsd01, /cms/cmsd02, 10TB totally  

CPU

  • There are 64 cpu cores for work nodes in the T3 farm which is able to run 64 jobs almost. Another server is used as user interface.

Software

  • The CMSSW software is distributed into three locations.
   CERN: /afs/cern.ch/cms
   T2_Beijing: /opt/exp_soft/cms
   T3:/cms/cmsd01/public/cms_software  
  • To get the versions list in T2_Beijing, please do the following:
   export VO_CMS_SW_DIR=/opt/exp_soft/cms
   source $VO_CMS_SW_DIR/cmsset_default.sh
   scramv1 list -c CMSSW
 

Grid jobs

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UI(cmsui.ihep.ac.cn) can also do the job submission to grid. You must set grid env before using grid tools
  • setenv
then you get the proxy
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UI(cmsui.ihep.ac.cn) can also do the job submission to grid. You must get your proxy first
 
  • voms-proxy-init --voms cms
Now you can use crab to do the submission
  • crab -create -submit 1
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  To check the status of the jobs you submitted.
   # qstat -u YOUR_ACCOUNT
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# qstat -q cmsq
 

To retrive job outputs, it's very simple:

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  The files with .OU extension are the job outputs and files with .ER are the error logs.
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Software

  • To use CMSSW, please setup the environment in your job script like the following.
   export VO_CMS_SW_DIR=/opt/exp_soft/cms
   source $VO_CMS_SW_DIR/cmsset_default.sh
 
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  Please feel free to give some comments.
 
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