RAL Memory Limits

From GridPP Wiki
Revision as of 13:31, 13 October 2014 by Andrew Lahiff b13e4f09e2 (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

All jobs on the RAL batch system are run in distinct cgroups, using the following cgroup subsystems: cpu, cpuacct, memory, freezer and blkio. On most worker nodes there are no memory limits applied using cgroups. However, on one tranche of worker nodes, corresponding to around 2000 cores, we have soft memory limits applied. In this case the cgroup attribute memory.soft_limit_in_bytes for each job is set to the amount of memory requested by the job.