There are some configuration options to tune OpenCL performance. Have a look at the corresponding section in the usermanual:
http://www.darktable.org/usermanual/ch07s02s06.html.php In your case I would give (pre-)pinned memory a try - an option that will be offered in darktable 1.4. Ulrich Am 29.11.2013 19:44, schrieb Deko: > Using Darktable 1.2.3 on (64bit) LinuxMint 15 with Nvidia 313-30 > graphics driver. > > Just getting to grips with Darktable after fitting a Nvidia GT620 > graphics card for opencl and I'm getting an odd result. > > With opencl off Denoise (profiled) wavelet takes 14.4 seconds to run > through a 24Mb raw image from my Nikon D600, and with opencl on it only > takes just 6.6 seconds - nice! > > However, if I then change the Denoise (profiled) to 'non-local means' > the processing time is 60.9 seconds without opencl but 112.0 seconds > with it, - twice as long and the computer becomes very unresponsive. > > So, I'm wondering if anyone else has found the same problem or if it is > something peculiar to my set up that I could maybe adjust?. > ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349351&iu=/4140/ostg.clktrk _______________________________________________ Darktable-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-users
