Am 18.02.2015 um 11:36 schrieb Christian Iuga: > > [pixelpipe_process] [export] using device 0 > [dev_pixelpipe] took 0.076 secs (0.250 CPU) processed `highlight > reconstruction ' on CPU, blended on CPU [export] > [dev_pixelpipe] took 0.260 secs (0.902 CPU) processed `output color > profile' on CPU, blended on CPU [export] > [dev_pixelpipe] took 0.037 secs (0.041 CPU) processed `gamma' on CPU, > blended on CPU [export] > [ ... ] > > So 3 modules doesn't use the GPU (or failed to use it ? ). It's normal ? > it's not (yet) implemented ? > And on gamma module is 3 time slower (with equel cpu usage), strange ? >
Hi, this is normal behavior depending on the settings and/or parameters. Highlight reconstruction with 'reconstruct color' is not implement in OpenCL - it would probably not benefit enough from parallelization due to the algorithm. However, if someone wants to give it a try, very welcomed. 'Output color profile' is probably using lcms2 in Robert's setup. Lcms2 an external library without OpenCL support. Finally 'gamma' is the last step of the pixelpipe which at that point anyhow needs to transfer data from GPU memory to host. And it's typically very fast (the figures given by -d perf are misleading). So no big gain in running it on GPU. Ulrich ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=190641631&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list Darktable-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-users
