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Re: st: hunting for the source of an error - r(603) - Dual Core problem?


From   William Buchanan <william@williambuchanan.net>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: hunting for the source of an error - r(603) - Dual Core problem?
Date   Thu, 27 Dec 2012 07:46:00 -0700

Hi Ben,

How large is the file you're working from? How large are the temp files you're creating? Do you have many other processes working in the background? Although I've never encountered the problem I think your intuition about it being some kind of resource issue might have some merit. 

In the meantime, it might be helpful to be more explicit about what you are hoping to accomplish in the end. Typically, looping over individual observations is not a great idea, although there are certainly times when it is a necessary evil.  Maybe with more details about what you are trying to do other could provide you with suggestions that could make that process more efficient and avoid creating > 100,000 tempfiles.

HTH,
Billy

Sent from my iPhone

On Dec 27, 2012, at 6:43, "Ben Hoen" <bhoen@lbl.gov> wrote:

> Hi all,
> 
> I have a relatively simple looping function that repeatedly saves and calls
> up temp files while looping through each case in a dataset, which, if
> successful, should take ~ 8 hours to run, though, I have yet to have it
> execute properly.  The last four times I have tried to run it will the full
> sample I have gotten the same error:
> 
> "file C:\Users\Ben\AppData\Local\Temp\ST_0500000x.tmp could not be opened
> r(603);
> 
> end of do-file
> 
> r(603);"
> 
> where x=3, 4 or 6 
> 
> Each time the error has happened on a different case.  The most recent three
> occurred on the 794th, 25,835th and the 20,633rd  cases (and before that I
> had runs out to the 70,000 and 60,000th (or so) cases.  There are a total of
> 166,181 cases. 
> 
> Is it something outside my code that is likely making this occur?  I am
> wondering if this has something to do with a dual-core processor.  I am
> running Windows 7- 64bit, with an Intel Duo Core E8600 - 3.33 Ghz processor
> with 8 GB of RAM, and am running Stata MP 12.1 for Windows - 64bit.  BUT,
> that is a GUESS (and nothing more).  My thought was that this error is
> occurring when the file is in use or is stored in one processor while the
> other is trying to access it?  
> 
> I have tried to force the error by running the code using many different
> subsamples and have never been able to get it to crash, and unfortunately
> breaking the sample down into smaller sample somewhat defeats the purpose of
> the code in the first place (which is creating nearest neighbor weights -
> using, in part, geonear(SSC)).  It seems important that the error has
> occurred on a different case, potentially indicating that the problem is not
> with the sample.  
> 
> Any ideas?  Thank you in advance for any assistance/advice you can offer.
> 
> Ben
> 
> Ben Hoen
> Principal Research Associate
> Lawrence Berkeley National Laboratory
> Office: 845-758-1896
> Cell: 718-812-7589
> bhoen@lbl.gov
> http://emp.lbl.gov/staff/ben-hoen
> 
> Visit our publications at: 
> http://emp.lbl.gov/publications
> 
> 
> 
> 
> 
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