R: QL latests with OpenMP 2.0 and MSVS 2012 (and CMake)

Posted by Ballabio Gerardo-4 on
URL: http://quantlib.414.s1.nabble.com/QL-latests-with-OpenMP-2-0-and-MSVS-2012-and-CMake-tp15025p15028.html

I have only little experience with OpenMP, and that was 10+ years ago, but I cannot believe that you can’t use unsigned loop indices with it. If that is indeed the case, I’d tend to regard it as a bug in OpenMP, and ask THEM to fix it, unless there are reasons for enforcing that rule that I can’t imagine.

 

I suspect the problem is more subtle, perhaps signed-unsigned comparisons (which however, as far as I know, should only trigger a warning) or different types being used in some place where they can’t be converted automatically. That is, not a problem with OpenMP per se, but a problem that happens to be present only in code paths that are compiled only if OpenMP is enabled.

 

Which error messages do you get exactly, and can you reduce the problem to a smaller test case?

 

Gerardo

 

 

 

Gerardo Ballabio

Risk Management

 

Banca Profilo S.p.A.

Via Cerva 28 - 20122 Milano

Tel. [phone]

www.bancaprofilo.it

 

 

 

Da: Joost Geerdink [mailto:[hidden email]]
Inviato: mercoledì 26 febbraio 2014 16.08
A: [hidden email]
Oggetto: [Quantlib-users] QL latests with OpenMP 2.0 and MSVS 2012 (and CMake)

 

Hi,

 

When I create my MSVS 2012 project via CMake and turn on compilation for OpenMP, compilation fails because a few implementations in QuantLib (lattice.hpp, ninepointlinearop.cpp, triplebandlinearop.cpp), use for loops with indices being of type Size, which is defined as size_t, which is unsigned. In the supplied project files the flag to compile for OpenMP is however not set, so this problem will not show up.

Surely this can easily be fixed by changing the types to int? Shall I change and commit a patch? Or am I doing something wrong here?

 

Kind regards,

 

Joost B.W. Geerdink

Banca Profilo S.p.A.
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