[torqueusers] qsub -X much slower than ssh -X
prakash.velayutham at cchmc.org
Sun Feb 10 22:41:55 MST 2008
On Feb 11, 2008, at 12:24 AM, Garrick Staples wrote:
> On Sun, Feb 10, 2008 at 10:50:20PM -0500, Prakash Velayutham alleged:
>> Hello All,
>> I recently noticed that performance of GUI-based applications like
>> Matlab are much slower during a qsub -X session than a ssh -X
>> Matlab takes about 6 seconds to start up using qsub -X, but only 2
>> seconds using ssh -X.
>> Any idea why? What should I check in my Torque server/MOM
> There wouldn't be any configs for this. I'll test tomorrow at work.
Thanks. I just did a test again and here are the numbers.
qsub -I -X to a node asking for all procs (4 in this case). Starting
up Matlab (no options/arguments, nothing) takes about 25-28 seconds to
get me the GUI with prompt inside Matlab command window.
ssh -X to a node which has no job running (with 4 CPUs) and starting
up Matlab takes about 10 seconds to bring the GUI with prompt.
Sorry about my earlier figures of 6 seconds and 2 seconds. Those were
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