On Fri, Nov 21, 2014 at 3:59 AM, Nanley Chery <nanleych...@gmail.com> wrote:
> Thanks for the quick fix, it's working on my system. > > I noticed that you've enabled GPU's by default due to some testing. Where > can I find these results? According to my tests among two operations > Edge-laplace and Video-degradation (currently on my bitbucket branches: > edge_upstrm, vid_upstrm), OpenCL on my GPU performs 7.8x slower than my > CPU. > Benchmarking GEGL on CPU vs multithreaded CPU vs OpenCL CPU vs GPU is not easy, since different workloads can have very different performance characteristics. With the multi-threaded work I was happy when there was any performance win over single threaded without crashes/visual glitches; since it meant that the concurrency handling of GeglBuffer had improved as intended. The type of workload I was using for my testing was many chained point composers / point composer-3s with quite large buffer sizes (4096x4096 buffers) which was meant to be representative of multi-layer compositions in GIMP. > Please let me know if you spot anything wrong with my measuring > methodology or OpenCL implementation. Also, is the mailing-list and the > bugzilla both suitable places to submit patches? > For patches, bugzilla is best, since things posted there are found again if for some reason forgotten for a while. /pippin
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