[GRASS-dev] Modules for GPU-based upgrade?

[Seth Price]

PS: There is a good discussion of double precision in the first few  
minutes of this podcast:
http://www.macresearch.org/opencl_episode3

Which also references this PDF:
http://www.nvidia.com/content/nvision2008/tech_presentations/NVIDIA_Research_Summit/NVISION08-Mixed_Precision_Methods_on_GPUs.pdf

~Seth


On Apr 2, 2010, at 2:03 PM, Dylan Beaudette wrote:

> On Friday 02 April 2010, Seth Price wrote:
>> I'm a student interested in a Summer of Code project to improve some
>> modules with GPU-based code. In theory, this could result in a 50x
>> speedup for embarrassingly parallel operations (ie. raster). There is
>> a list of some possible modules for upgrade here:
>> http://grass.osgeo.org/wiki/GPU
>>
>> What would the GRASS community think of also including these modules
>> as options for improvement? Do they need a speedup? Am I missing
>> anything?
>>
>> - r.resamp.interp (spline & Lanczos would be added)
>> - r.slop.aspect
>> - r.texture
>> - i.sunhours
>> - i.vi
>>
>> These also work out well for my thesis work (land cover
>> classification), which gives me extra motivation. ;)
>> ~Seth
>
> Hi,
>
> I think that it sounds like a great idea. Have any ideas on how to  
> keep double
> precision when working with the GPU?
>
> Cheers,
> Dylan
>
>
> -- 
> Dylan Beaudette
> Soil Resource Laboratory
> http://casoilresource.lawr.ucdavis.edu/
> University of California at Davis
> 530.754.7341