Am So 27 Nov 2016 15:32:24 CET schrieb Rico Heil <[email protected]>: > This discussion made me check the OpenCL paramters in my current > darktable installation. > "activate opencl support" is checked and I cannot uncheck it. > Does this mean I am forced to use OpenCL or does it mean my GPU does > not support OpenCL at all and the disabled control shows a default > value that's irrelevant for me? > > I am using an nVidia GeForce 9800 GT with the video-nouveau driver, > but wouldn't mind switching to another driver if that would speed up > darktable.
To find out what darktable is doing start it from the command line, "darktable -d opencl". And try switching to the nonfree nvidia drivers. As far as I know, OpenCL support in nouveau is not yet there. The feature matrix at https://nouveau.freedesktop.org/wiki/FeatureMatrix/ says "compute" is not available for most cards, work in progress for some. The nvidia drivers from nvidia support OpenCL well. On most systems, OpenCL should speed up darktable. If your system has a recent CPU and an old graphics card, things may be different. Cheers Michael ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
