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[Václav Šmilauer <eudoxos@xxxxxxxx>]

> Thanks, Vaclav.  What I did was I put this in the hpp file:
> boost::mutex globalMutex;
> 
> And this inside the function, which uses my variable idA:
> boost::mutex::scoped_lock lock(globalMutex);

Ok, but this will only prevent parallel execution of your function; but
you said you had parallelism disabled... Could you check by inspecting

 O.numThreads==1

?