[Bf-committers] Blender and OpenCL

[François T.]

any how, all this sounds good to my ears !
if it gets implemented for nodes (especially compositing), count me for
testing :)

2010/8/25 Jeroen Bakker <j.bakker at atmind.nl>

>
>
> On 08/24/2010 07:46 PM, Xavier Thomas wrote:
> > You might be interested in MiniCL used in the bullet physics library.
> > It permit to use OpenCL on CPU only.
> >
> >
> Thanks, but I have a question on MiniCL as I am not sure if this is
> suitable. IMO you need different code for CPU's and GPU's.
>
> CPU optimization you minimize the number of loops. The total number of
> instructions, time should be minimized.
> GPU you balance the loops between the number of platforms, devices,
> nodes and cores.
> Sometimes it is better not to optimize any code on GPU's, but just play
> with the data in the KernelTasks. But we know that the same code on a
> CPU will perform very bad.
>
> Still I will look into the MiniCL library as I didn't heard about it.
>
> Jeroen.
>
> > 2010/8/24 Jeroen Bakker<j.bakker at atmind.nl>:
> >
> >> Hi all
> >>
> >> I have been experimenting with OpenCL and are planning a basic framework
> >> to support it in Blender.
> >>
> >> main features are:
> >>   * OpenCL is disabled by default, CPU fall-back must ALWAYS be
> >> available. OpenCL can be enabled with command-line parameter
> >>   * Compiler directive to completely disable OpenCL in Blender.
> >>   * Basic implementation to access and use GPU-devices
> >>   * I am not targeting the blender-render, but other time-consuming
> >> processes (fluids, node systems etc)
> >>
> >> I think this matches the basic blender principles:
> >>   * can work on standard home PC's
> >>   * blender installation is unzipping an zip
> >>
> >> Are other people also busy with this subject?
> >>
> >> Best regards,
> >> Jeroen
> >>
> >> http://wiki.blender.org/index.php/User_talk:Jbakker
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François Tarlier
www.francois-tarlier.com
www.linkedin.com/in/francoistarlier