Hrm, It seems that any sort of implemintation will be quite an involved job.
I have done some editing Nodes.py/toForFromStatNode by adding:
code.putln("#pragma omp parallel for")
However on compilation openMP starts complaining about:
error: invalid exit from OpenMP structured block
which occures at every "goto" statement inside the paralleled for.
So basically, unless cython can be reworked to not utilize goto
statements all over the place, openMP is not a feasible option.
-Michael G
-----------------------------
http://fluxtrap.blogspot.com/
On Fri, Dec 25, 2009 at 2:37 PM, Dag Sverre Seljebotn
<[email protected]> wrote:
> Michael G wrote:
>> Hello,
>>
>> I was wondering if there has been any consensus regarding the openMP
>> implementation (see http://wiki.cython.org/enhancements/parallel). I
>> would put my vote for proposal 6 or 7 simply because they seem to
>> allow for the most control over shared/private variables and the
>> scheduler openMP is using. On the other-hand, the comments based
>> implementations would be very easy to code!
>>
>> So the question is: what are people doing right now to implement
>> openMP in their code?
>
> Not using Cython. All the OpenMP I have heard of has been using C and just
> wrapping the code in Cython. Doing so would be a terrible experience.
>
> If you want to help make this happen let us know. As far as I know, none
> of the existing Cython developers have any personal interest in OpenMP for
> their own projects.
>
> BTW, my vote is for a more or less direct mapping of OpenMP into the
> Cython language first time around (through e.g. magic functions in a magic
> cython.openmp namespace). There's loads of features which can't be mapped
> directly to a single for-loop. Then, once one has some experience using
> OpenMP and Cython together and common patterns emerges, one can look into
> http://wiki.cython.org/enhancements/parallel.
>
> Dag Sverre
>
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>
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