Hello Developers, I just want to share my first opencl experiences with you.
The positiv things to start with: I have a core i7-2600k. I used to run it with onboard graphics (HD3000). With this setup I get a JPG export speed of ca. 1.5 pictures per minute. Today I got a Geforce GTX750TI. With opencl enabled I get an export speed of 8 JPG/min. This is factor 5 faster than before. In addition to this the CPU load drops significantly going from 800% (8 core fully loaded) to 160%. And it is not only the export that is faster. Also the GUI feels a lot smoother when zooming in and out of images. Now the negative thing that occured to me: I exported 149 pictures in one shot. For the first 34 pictures I see the above mentioned benefits. But starting with picture 35 I am back to the old performance incl. a CPU load of 800%. It looks like opencl stopped working after some time. And it is never coming back. The next export is slow again. darktable -d opencl says: [opencl_denoiseprofile] couldn't enqueue kernel! -4 [opencl_pixelpipe] failed to run module 'denoiseprofile'. fall back to cpu path What is going on? Matthias PS Using darktable 1.5+2075~g09042e3 on debian testing. ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://p.sf.net/sfu/Zoho _______________________________________________ darktable-devel mailing list darktable-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/darktable-devel
