Re: st: number of processes/threads open and used under StataMP

[Maarten Buis <maartenlbuis@gmail.com>]

This is more question for Stata's techsupport.

-- Maarten

On Thu, Sep 12, 2013 at 7:30 PM, László Sándor <sandorl@gmail.com> wrote:
> I would also like to understand StataMP 13 threading. I am running
> StataMP 13 batches on a Windows server where I have no access to job
> scheduling. I can only submit a job and see it slowly progressing.
>
> Now I checked the details of the jobs, and usually I see six threads
> open for any of my jobs, but only 4 having used the CPU at all. (The
> monitoring tool does keep a running account of CPU usage.)
>
> The Stata license is for 8 cores.
>
> I think I have three related questions:
>
> 1. For my information: is it normal that Stata open more threads than
> it uses (which depends on the operations, obviously). If so, why not
> open all 8?
>
> 2. More operationally: Do the two open threads slow Stata down because
> it hopes to access them but never gets scheduled on our server? Am I
> better off with ramping -set processor- down to 4?
>
> 3. Related to both previous points: Shall I contact our IT staff that
> maybe the scheduling setup holds me back because I could benefit from
> the use of 8 cores and it is unlikely that Stata would never opened
> them if it were allowed? (In case it matters, my operations involved
> -sum-, -replace- and third-party Mata code.)
>
> Thanks,
>
> Laszlo
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-- 
---------------------------------
Maarten L. Buis
WZB
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10785 Berlin
Germany

http://www.maartenbuis.nl
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*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/faqs/resources/statalist-faq/
*   http://www.ats.ucla.edu/stat/stata/