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[HTCondor-users] Limit Memory Usage

Hi everybody,

I would like to know how to configure my execute nodes to preempt jobs that 
exceed the memory reserved for HTCondor.

I use Ubuntu 12.04 on execute nodes and I have HTCondor version 7.8.7

I look at https://htcondor-wiki.cs.wisc.edu/index.cgi/wiki?
and in the documentation but my tests are not concluding.

I would preempt jobs when they exceed the limit so I do this:
PREEMPT = $(PREEMPT) || ((MemoryUsage > Memory) =!= TRUE)
WANT_SUSPEND = $(WANT_SUSPEND) && ((MemoryUsage > Memory) =!= TRUE)
(like in the wiki)

But that doesn't work, and I try to replace "Memory" by a number (1000 for 
example and that doesn't work too.

I try USER_JOB_WRAPPER but I don't really understand how to use it...

Thank you.
Have a nice day.