That sounds like bad news for my dreams ! :( I was planning to make a try with IPP on some parts of GDAL (warping, geometry rasterization).
Did you make some profiling ? I would be interested to know the results ! Regards, Benoît Andrieu > -----Message reçu----- > De: Adam Nowacki <no...@xpam.de> > À: "gdal-dev@lists.osgeo.org >> Gdal-Dev" <gdal-dev@lists.osgeo.org> > Date: 31/03/2009 00:06 > Objet: Re: [gdal-dev] Availability of Lanczos and cubicspline in gdaladdo > > Seth Price wrote: > > I actually hope to be addressing performance in my GSoC project. I'm > > interested in rewriting the GDAL resampling code to CUDA, so the graphics > > card does the hard work. For example, instead of processing one pixel at a > > time, the latest GeForce GTX 260 would be able to process 216. I'm hoping > > for CUDA to be 50 to 100 times faster. > > > > Make sure you're using GDAL 1.6 or later, I recently rewrote the regular > > Lanczos/cubicspline warping code to be much faster. > > ~Seth > > You can achieve pretty amazing speeds on the CPU alone. I have a SSE3 > (would be trivial to rewrite as plain old SSE, probably a bit slower) > Lanczos sampler with 4x4 kernel that runs at ~70 000 000 samples per > second with float data type on a 2.33GHz Intel Xeon E5410 (one thread). > I was considering porting the sampler to GDAL but found that I would > have to rewrite the whole warping code to get any useful speed boost, > including heavily optimizing coordinate transformations. > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev