Using the Grid to run CALICE jobs.

Simplified Grid Submission

Birmingham provides a modifed version of the gqsub tools. These tools allow users to submit jobs to the grid through the familair torque qsub interface. More information about these tools can be found here.

We support CALICE on both of the Birmingham clusters (the local cluster and on the BlueBEAR Grid nodes). If no site is specified in the batch script, the gqsub tools will automatically send the job to BlueBEAR. This is the recommended behaviour, as we would prefer to run CALICE jobs on BlueBEAR!

Accessing Software

The standard ILC and CALICE software have been installed on both of the Birmingham Grid clusters. These were obtained from lfn:/grid/calice/software (more information here) and have been installed in $VO_ILC_SW_DIR and $VO_CALICE_SW_DIR respectively.

If a root environment is required, it is possible to set one up by executing the following on a worker node:

source $VO_ILC_SW_DIR/ v01-08-01

This particular release of the ILC software will setup root 5.26/00b.

Accessing Data

Birmingham supports CALICE on the local storage element. Data may be copied to the SE using the conventional lcg commands, or by using the gscp command:

gscp some_local_file.dat lfn:/grid/calice/grid_file_name.dat

Similarly, files may be copied off the SE using the command:

gscp lfn:/grid/calice/grid_file_name.dat some_local_file.dat

The gscp command is available on the Birmingham WNs, but users should note that it is their responsibility to delete files from the WNs once they are finished with them! -- ChristopherCurtis - 04 Jun 2010

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