[Bf-cycles] CUDA and OpenCL procedure for 2.63

Thomas Dinges blender at dingto.org
Thu Apr 5 16:32:49 CEST 2012

I take back "I don't have any issues or slowdown here".
I get some freezes with the 4.2 toolkit. Quite heavy ones, cannot even 
kill the Blender process then.

So it's a definite "we stick with toolkit 4.0".

CUDA sm_30 kernels for the Kepler cards can be compiled with 4.2 and 
made available via an extra zip archive on d.b.o.


Am 05.04.2012 12:04, schrieb Thomas Dinges:
> Hi Brecht,
> for the upcoming 2.63 release I propose the following actions:
> The toolkit 4.2 is still in RC phase. Although I don't have any issues
> or slowdown here (Geforce 540), I'd stick to 4.0 toolkit for now.
> So I propose to build the sm_13, sm_20 and sm_21 kernels with toolkit 4.0
> and the sm_30 with the toolkit 4.2 for the Kepler gpus.
> I am not sure if the kernels are different for Linux or Windows, if they
> aren't I can build the Kepler kernels, upload, so release builders can
> manually copy the sm_30 kernel into addons/cycles/lib.
> Otherwise I will create the sm_30 kernels for windows only and upload
> for jesterKing.
> OpenCL:
> As it has been confirmed by several people in the forums, I think it's
> ok to enable _KERNEL_SHADING_ for OpenCL on AMD cards.
> There are some reports about not working textures, so we could enable it
> without textures support for now.
> But I think it's good to have this tested by a wider audience, rather
> than asking people to modify on their own builds.
> Should be pretty save, OpenCL is marked as Experimental feature in
> Cycles anyways.
> Best regards,
> Thomas

Thomas Dinges
Blender Developer, Artist and Musician


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