The Institute for Development and Resources in Intensive Scientific Computing (IDRIS), founded in 1993, is a centre of excellence in intensive numerical calculations which serves the research branches of extreme computing.
Jean-Zay is the supercomputer currently installed and used at IDRIS. All of the IPSL models and tools are aimed to be supported and maintained at Jean-Zay.
See the full presentation on the official site for IDRIS on http://www.idris.fr/eng/ and specific information about the Jean-Zay machine here : http://www.idris.fr/eng/jean-zay/ . The site is also available in french.
It is important to take the time to install a comfortable and efficient environment.
ryyy999@jean-zay: rm $HOME/.bash_profile ryyy999@jean-zay: cp $WORK/../../psl/commun/MachineEnvironment/jeanzay/bash_login $HOME/.bash_login
module load netcdf/4.7.0/intel-19.0.4-mpi module load nco/4.7.9/intel-19.0.4-mpi module load ncview/2.1.7/intel-19.0.4-mpi
If you do not have read acces to $WORK/../../psl/commun, contact Anne Cozic or the plateforme team who will add read permission for your group
module load singularity container=/gpfswork/rech/psl/commun/Tools/cesmep_environment/20230611_V3.0_IPSL8.sif idrcontmgr cp $container
The shared repository with input files is stored at jean-zay here: $WORK/../../psl/commun/IGCM. This folder is noted using the variable R_IN in the comp.card in libIGCM configurations. The folder R_IN is the same and regulary synchronized between the computing centers TGCC, IDRIS, ESPRI mesocenter(ciclad/climserv) and LSCE(obelix). Contact the plateforme groupe if you don't have read access to these files with your login at jean-zay.
Note that there is a specific front-end to perform compilations tasks. This front-end allows you to compile faster and in one go : default XIOS compilation may crash because of restricted interactive ressources per user on the standard front-end. You can access the compilation front-end by using ssh protocol :
ssh your_login@jean-zay-pp.idris.fr
After the compilation is successfully finished, you must go back to jean-zay standard front-end (jean-zay.idris.fr) to submit your job.
To know the computing time used by your group (updated once a day):
plab999@jean-zay:~> idracct
idracct gives information about all your projects.
If you are working on several projects, your current project is referenced by the environnement variable IDRPROJ (echo $IDRPROJ). You can change the value of IDRPROJ (eval $(idrenv -d <other_project>) and run idracct again.
is the temporary execution directory specific to batch jobs
To check the used space and the size of the HOME, WORK and STORE:
# Quota HOME ryyy999@jean-zay: idrquota -m # Quota WORKDIR ryyy999@jean-zay: idrquota -w # Quota STORE ryyy999@jean-zay: idrquota -s
Final simulation outputs are stored on Jean-Zay $STORE space in IGCM_OUT directories.
LibIGCM will copy monitorings files on thredds node by using command thredds_cp. You can find all informations on thredds at Idris here. You can access to data after on this website : https://thredds-su.ipsl.fr/thredds/catalog/idris_thredds/catalog.html
At IDRIS, you have a unique password for all computers. Password have to be changed one time per year. The command to change your password is passwd . You receive a mail 2 weeks before password expiration.
Jean Zay for computing part
To have information about the machines' state (if there will be a maintenance for instance), a mailing list was created by IDRIS. To subscribe, the documentation can be found on the IDRIS extranet, or you can ask the Plateforme group.