[Bioclusters] OpenPBS problems

Rayson Ho bioclusters@bioinformatics.org
Tue, 2 Dec 2003 07:38:16 -0800 (PST)

--- Tim Cutts <tjrc@sanger.ac.uk> wrote:
> > The closest thing you can use is checkpointing. I
> > don't think a batch system can tell the OS to "swap
> > processes to disk".
> LSF can, although it is of course another example that costs $$.
> Different queues can be configured to 'preempt' each other.  A
> pre-empted job in a low priority queue is sent a SIGSTOP by LSF, and
> will get a corresponding resume signal once the higher priority job
> has finished.

Sending SIGSTOP is different from swapping the whole process to disk!

All batch systems (SGE, PBS, LSF) can send SIGSTOP to the job, but
stopping the process still consumes the system resource. Eventually,
the swap partition will be used up by suspended jobs.


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