Add bf_ignore_newly_avail_nodes option to SchedulerParameters.
When bf_continue is set, and locks are released during a backfill cycle, other operations can make new resorces available while part way through the queue. When backfill continues the cycle and evaluates new jobs, it may allocate some of these newly available resources to lower priority jobs, rather than to higher priority jobs that were already considered in this backfill cycle. This patch introduces bf_ignore_newly_avail_nodes to SchedulerParameters to solve this issue. This option will ignore nodes made available when the backfill scheduler yields when resuming the backfill cycle. Bug 5279.
Please register or sign in to comment