Usage: Job creation

Introduction

This section describes the first step of the CRAB usage workflow, the job creation.

Job creation

The job creation uses the provided CRAB configuration file to check the availability of the selected dataset and prepares the jobs for submission according to the selected job splitting:

crab -create

which uses the default name for a CRAB configuration file: crab.cfg. If a differently named CRAB configuration file should be used, the command changes to

crab -create -cfg <configuration file>

The creation process creates a CRAB project directory (format =crab_<number>_<date>_<time>) in the current working directory. It can be used later to distinguish multiple CRAB projects in the same directory.

The used CRAB configuration file is copied into the CRAB project directory and can be changed and used again without interferring with the already created projects.

This is an example for the standard output of the creation command:

crab. crab (version 1.4.2) running on Mon Mar 19 13:16:54 2007

crab. Working options:
  scheduler           edg
  job type            CMSSW
  working directory   /uscms/home/gutsche/work/software/CRAB/test/CMSSW_1_2_0/src/crab_0_070319_131654/

crab. Contacting DBS...
crab. Required data are :/RelVal120Higgs-ZZ-4Mu/FEVT/CMSSW_1_2_0-FEVT-1166242770
crab. The number of available events is 1200

crab. Contacting DLS...
crab. Sites (12) hosting part/all of dataset: ['lcgse01.phy.bris.ac.uk', 'thpc-1.unl.edu', 't2data2.t2.ucsd.edu', 'cmssrm.fnal.gov', 'cmssrm.hep.wisc.edu', 'cit-se.ultralight.org', 'srm1.phys.ufl.edu', 'srm.unl.edu', 'srm.cern.ch', 'cithep59.ultralight.org', 'se01.cmsaf.mit.edu', 'dcache.rcac.purdue.edu']

crab. 10 job(s) can run on 100 events.

crab. Creating 10 jobs, please wait...

crab. Total of 10 jobs created.

crab. Log-file is /uscms/home/gutsche/work/software/CRAB/test/CMSSW_1_2_0/src/crab_0_070319_131654/log/crab.log

In case of problems, a good place to look for output is the CRAB log file in

crab_?_*_*/log/crab.log

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Topic revision: r1 - 2007-03-19 - OliverGutsche
 
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