Even - good stuff! Can you comment on the usage of openmp for multi-threading? Is the multi-threading in gdal entirely based on pthreads (in linux)?
It's my understanding that openmp is much easier to manage but offers less fine-grained control - is that required for multi-thread warping? Of course what works best is what is already working! Sorry for such a generic question, I did not really look into the specifics (other than a quick look at mutext handling). Regards, Etienne On Sun, Jun 10, 2012 at 6:52 PM, Even Rouault <even.roua...@mines-paris.org> wrote: > Le dimanche 10 juin 2012 23:44:54, Yogesh Dahiya a écrit : >> As far I know gdal1.9 has integrated opencl so we can parallelize by >> setting it right. >> So what exactly is your addition. >> By the way I tried opencl case and was able to get 16x over general case >> for lanczos for image of 16000*16000 > > (Replying to list too, as others might have the same question) > > Yes indeed, GDAL 1.9 can use OpenCL and this implementation is of course still > available. > > Unfortunately, AFAIK, there is not yet any working OpenSource OpenCL > implementation (and my experience with some proprietary OpenCL implementation > has not always been convincing, like the GUI being totally unresponsive during > the processing). > > The new multi-threaded implementation just uses traditional multi-threading > technics that are available on all platforms where GDAL can run. > _______________________________________________ > 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
