[Beowulf] Controlling java's hunger for RAM

Mark Hahn hahn at mcmaster.ca
Mon Feb 20 21:02:39 PST 2012

> The reason why is that Torque sets RLIMIT_RSS to enforce memory

RLIMIT_RSS is simply a noop; we use RLIMIT_AS (vmem, pvmem).
a good thing about this is that it's fully consistent with 
the vm.overcommit_memory=2 (ie conservative) mode.  some people 
find it offputting the way VM counts things like code (usually
mapped multiple times) or F77 arrays that are defined larger than used.

regards, mark hahn.

More information about the Beowulf mailing list