Usage of CMS T3
CMS users now can login to the new user interface (cmsui01.ihep.ac.cn) to access the T3 resources and grid resources(including T2_Beijing).
Accounts
Each IHEP cms member can log in cmsui01 with afs acount. if any problems with afs acount, please refer to Yangyi(
yy@ihep.ac.cn, 6007).
When user enters, the system goes directly to afs home directory. Since the space of afs home directory is too limited(500MB), we define another $HOME directory for IHEP CMS users, which holds totally 500GB capacity in all. Therefore, users now have two $HOME directory: local one and afs one.
- local: /home/cms/<username>
- afs: /afs/ihep.ac.cn/users/z/zhangxm
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
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
Batch jobs
To submit batch jobs:
# ssh cmsui01.ihep.ac.cn
# cd /home/cms/YOUR_ACCOUNT
# qsub -q cmsq YOUR_JOB_SCRIPT
To check the status of the jobs you submitted.
# qstat -u YOUR_ACCOUNT
To retrive job outputs, it's very simple:
#ls
#vi <JOBID>.OU
#vi <JOBID>.ER
The files with .OU extension are the job outputs and files with .ER are the error logs.
Please feel free to give some comments.