[FreeNX-kNX] Matlab in cluster through NX

[Prakash Velayutham]

Thanks. That is good to know.

Just out of curiosity, does anyone here use VirtualGL with FreeNX at  
all. If yes, what do you use it for and how does it compare with just  
FreeNX (thus NX client-side rendering of graphics instead of 3D being  
rendered on the application server's graphics card)?

Thanks,
Prakash

On Jun 10, 2009, at 3:21 AM, Florian Schmidt wrote:

> Hi,
>
> we use Platform LSF to dispatch Jobs in our Cluster
> NX-Client 3.2.X - 3.3.X (Windows, Ubuntu, ThinClient, ...)
> FreeNX 0.7.4-svn613 with latest patches from mailing list
> nx-3.3.0-16
> RHEL 4 64bit
>
> we use different Matlab Versions on RH 7.2 / RHEL 3 and RHEL 4 (for  
> everyone who doesn't know: RHEL RedHatEnterprise)
>
> the prompt in Matlab takes between 10 and 30 Seconds depending on  
> what hardware the job got and depending on the matlab version so I  
> guess your startup time is pretty ok for clustered usage.
>
> Cheers,
> Florian
>
>
> 2009/6/10, Prakash Velayutham <prakash.velayutham at cchmc.org>:
> On Jun 9, 2009, at 5:55 PM, Holger Krull wrote:
>
> > Prakash Velayutham schrieb:
> >
> >> Does anyone here use (or administer) Matlab in a Linux-based  
> cluster?
> >
> >> How does the graphical performance compare between Matlab GUI in  
> a NX
> >> session to that of Matlab running in the local desktop?
> >
> > I've setup matlab in a cluster, but not with the automatic job
> > scheduling of matlab (university didn't buy it). We devided and
> > scheduled the tasks ourself.
> > I could see no difference between local and NX session, but my
> > aplication only produced graphical output at the end of all
> > calculations, so there were no frequent updates necessary.
> > I used NX to start matlab localy and be able to transfer the session
> > to a remote computer (at home) without problems.
> >
> > In short, it depends on what you do.
>
>
> Thanks. I don't have the Distributed Computing Server license either,
> so I was also talking about the cluster scheduling instead. Anyways,
> here are some numbers from my Matlab environment. Could you compare it
> with yours when you get a chance and let me know how bad mine are:
>
> NX Client - 3.3.0.6 - Mac OS X
> FreeNX Server - 0.7.2-1.1 - OpenSUSE 10.3
>
> Cluster resource manager - Torque - 2.3.6
> Cluster Scheduler - Moab
>
> I start NX client and connect to the cluster head node. Either using
> SSH -X or using qsub -X (Torque-specific), I then connect to a compute
> node. Then I start Matlab. It takes about 15 seconds to get the prompt
> inside of the Matlab GUI's command screen. How bad is this time for
> startup?
>
> Thanks,
>
> Prakash
>
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