Should work in HTCondor version: 7.2 +NOTE: This recipe doesn't work with partitionable slots. The BOINC client will happily run forever. We use machine RANK to preempt the BOINC jobs when more important jobs are available. Machine RANK doesn't work with partitionable slots as of HTCondor 8.0. + When HTCondor is not busy running jobs from users, you may want it to run some other backfill task. HTCondor provides special support for backfilling with BOINC. However, the built-in support assumes that BOINC can decide for itself how many tasks to run in order to fill the idle cpus on a multi-cpu/core machine. At this time (BOINC 6.4), there is no such capability in BOINC. Therefore, the built-in support for BOINC is only really capable of backfilling a single slot. (If you set it up, HTCondor may show multiple slots in the backfill state, but in fact only a single instance of BOINC will be running and it will be running a statically configured number of work units in parallel--typically just one.) To get around that problem, there is a different way to configure HTCondor to run BOINC backfill (or any other type of backfill task). It uses the startd's fetch-work hook to run one instance of the backfill task per idle HTCondor slot. Here is an example configuration:
