Re: [Condor-users] MATLAB licenses

[Maxim Kovgan <maxim.kvg@xxxxxxxxx>]

Another thing... are you sure matlab is the only tool that can run
your scripts ?
I mean if you use some basic features of matlab, maybe octave will
suffice, and it has no licensing issues.

Max.


On 2/9/06, Maxim Kovgan <maxim.kvg@xxxxxxxxx> wrote:
> Hi,
> I can think of 2 directions:
> 1. you can wrap your matlab script into another script, which will
> e.g. check how many licenses are left and poll the license server
> until some threshold is reached, prior to launching matlab executable.
>
> 2. you can try using limits of maximum running jobs via the pool global macro:
> MAX_JOBS_RUNNING, but then you need to make sure ... the only matlab
> user runs this job.
>
> 3. If it is possible,  you should obtain enough licenses to have the
> whole pool busy.
>
>
> --Max.
>
>
> On 2/9/06, Ben Liblit <liblit@xxxxxxxxxxx> wrote:
> > I recently submitted a batch of 260 jobs, each of which runs two MATLAB
> > batch scripts ("matlab -nojvm -nodisplay -r ...") toward the end of its
> > work.  53 of these jobs failed because they were unable to obtain a
> > MATLAB license:
> >
> >      License Manager Error -4.
> >      Maximum number of users for MATLAB reached.
> >      Try again later.
> >      To see a list of current users use the lmstat utility.
> >
> > The MATLAB scripts are short, each lasting no more than a few seconds.
> > But my 260 jobs include many subgroups of about equal duration, which
> > means I'll be creating large spikes in MATLAB license demand.
> >
> > What's the right approach here?  Is there a different way one is
> > supposed to run MATLAB under Condor?  Is there a way to declare the need
> > for a MATLAB license as part of a job's classad restrictions?  Should
> > every Condor node have a specially reserved MATLAB license for the
> > exclusive use of the Condor job it is currently running, or multiple
> > such licenses for nodes that run multiple concurrent jobs?
> >
> >
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> >
>