Computing : NAF - Grid CEs

ARC CE

naf-arcce0.desy.de

• legacy ARC CE v5
• DNs are mapped to helper user afatlce1

• patched /usr/share/arc/submit-condor-job, that updates a ticket from afatlce1 crontab

  /usr/bin/kinit afatlce1 -k -t  /var/lib/condor/afatlce1.keytab  1>&2
  export KRB5CCNAME=/tmp/krb5cc_$(id --user)
  /usr/bin/klist -l 1>&2

• request is build with asking for GPU resources

  echo "DESYPATCH: adding gpu request to the job jdl RequestGpus = 1"
  echo "+RequestGpus = 1" >> $LRMS_JOB_DESCRIPT
  echo "Request_GPUs = 1" >> $LRMS_JOB_DESCRIPT
  echo "+RequestRuntime = 86400" >> $LRMS_JOB_DESCRIPT
  echo "concurrency_limits = COVID" >> $LRMS_JOB_DESCRIPT

HTCondor CE

naf-htcondorce0.desy.de

• ticket update for the moment with a plain cron → systemd timer/service unit as template with UIDs ?

  /etc/cron.d/update_ticket_afatlce1.cron
   5 */12 * * * root /usr/bin/kinit afatlce1 -c /tmp/krb5cc_afatlce1 -k -t  /var/lib/condor/afatlce1.keytab && /usr/bin/chown afatlce1:af-atlas /tmp/krb5cc_afatlce1