2012/5/22 Antony Riakiotakis <[email protected]>
> Hi Ruben, I have been looking into some openmp crashes we've had with
> blender and i have read the info in your first email on this thread.
> It looks like we may have been experiencing the same problem
> unfortunately. We are using the ray-linn build so if the default
> behaviour is this for every MinGW64 build, then I expect this to be
> the cause for our crashes too.
>
> I was wondering if I could find a build that is not too optimized, so
> that as many people as possible could download and use, and that
> doesn't have these issues with openmp. Or maybe a guide on how to
> build without this drawback would be greatly appreciated!
>
There are a couple of builds you can try, but I don't think any
optimization of the toolchain is causing this.
There's my latest release builds (GCC 4.5.3, 4.6.3, and 4.7.0):
http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/rubenvb/release/
And Sezero's older builds:
http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/sezero_4.5_20111101/
http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/sezero_4.4_20111031/
Particularly the 4.4 build would be interesting to try, depending on how
new you require the mingw-w64 headers these might not work though.
Providing an exact backtrace of the problem would help enormously. Right
now, there a about 10 different places the problem could lie. Only one of
them is GCC/libgomp.
Ruben
>
>
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