OpenCL can use CPUs and GPUs for parallel processing. For all those operations that can be done more efficiently on a GPU, there a potentially enormous performance gains. Since OpenCL is like a reduced C dialect and completely abstracted from the hardware, all an OpenCL programmer needs to do is implement the algorithm and then it's up to the graphics chips manufacturers to release drivers for their hardware. NVIDIA and ATI have already done that.
I for one would love to see v.vol.rst run in parallel on a bunch of cheap GPUs, outperforming a mainframe... Ben Hamish wrote: > Jeshua wrote: >> I was curious if anyone has looked at implementing OpenCL >> for some of the processor intensive highly parallel >> modules. >> >> <http://www.khronos.org/opencl/> >> >> It seems to me that some of the more processor intensive >> modules could gain a significant performance utilizing >> OpenCL with fairly modest development effort. >> >> I am not familiar with the code for v.surf.rst, however I >> might be interested in making an attempt if it can be >> parallelized. Or can anyone suggest what processor intensive >> modules might be good candidates for parallelization? > > > see http://grass.osgeo.org/wiki/OpenMP > > what advantages would OpenCL have over OpenMP and pthreads? > > OpenMP and pthreads are somewhat different beasts suiting two somewhat > different niches. Where would OpenCL overlap? Would it be a better > or worse fit than the others for different scenarios? > > Probably supporting three different MP schemes is too crowded. > > > Hamish > > > > > > _______________________________________________ > grass-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-dev > > -- Benjamin Ducke Senior Applications Support and Development Officer Oxford Archaeological Unit Limited Janus House Osney Mead OX2 0ES Oxford, U.K. Tel: +44 (0)1865 263 800 (switchboard) Tel: +44 (0)1865 980 758 (direct) Fax :+44 (0)1865 793 496 [email protected] ------ Files attached to this email may be in ISO 26300 format (OASIS Open Document Format). If you have difficulty opening them, please visit http://iso26300.info for more information. _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
