[Insight-developers] suggestion: use environment variable to limit number of parallel threads

[Torsten Rohlfing]

Sean:

Two problems with your suggestion:

a) I have to put a command line switch etc. into EVERY application I 
build based on ITK to replicate this functionality. That includes all 
applications made by other people, so I have to potentially keep 
patching other people's code.

b) if I don't have the source code of the application (possible 
according to ITK licensing), then I'm screwed.

Does that answer your question?

Cheers!
  TR

Sean McBride wrote:
> On 9/20/07 9:11 AM, Torsten Rohlfing said:
>
>   
>> Well, no, that's not quite what I meant. See, the function you're 
>> referring to allows you to set the number of threads from INSIDE an ITK 
>> application, whereas I was suggesting a way of setting it from OUTSIDE 
>> the application.
>>     
>
> hmmm, perhaps I need more caffeine... :)  but ITK is just a big library
> that is linked into an executable.  Can't your application just call
> SetGlobalDefaultNumberOfThreads() early on (before you call other ITK
> APIs), based on whatever env var you want?
>
>   


-- 
Torsten Rohlfing, PhD          SRI International, Neuroscience Program
 Research Scientist             333 Ravenswood Ave, Menlo Park, CA 94025
  Phone: ++1 (650) 859-3379      Fax: ++1 (650) 859-2743
   torsten at synapse.sri.com        http://www.stanford.edu/~rohlfing/

     "Though this be madness, yet there is a method in't"