Re: [condor-users] One vm or two?

[Derek Wright <wright@xxxxxxxxxxx>]

On Sat, 06 Dec 2003 10:28:17 +0200  Mark Silberstein wrote:

> Doesn't Condor update the job's Image size during the job is
> running?

yes.

> We had our Matlab jobs evicted when they were reaching 1/2 of the
> memory in the dual CPU machine. So the fact the job declares about
> itself to require only 1 KB of RAM helps only to get the resource,
> but not get the job completed.
> I'm definitely missing something, can you explain?

the startd only evicts jobs that use "too much" memory if you
configure it to be that way.  for example, your PREEMPT and/or SUSPEND
expression must have a clause like this:

PREEMPT = (...) || (TARGET.ImageSize > Memory * 1024)

unfortunately, ImageSize is in kbytes, while Memory is in mbytes. :(

so, if you don't have anything like that in your PREEMPT and SUSPEND
expressions, Condor will happily let your job keep running, even if
it's using more RAM than it asked for.

enjoy,
-derek


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