I've seen this when a very slow GPU, instead of the fast one, was accidentally selected in the preferences.
On 5 December 2016 at 11:46, Nick Guth <[email protected]> wrote: > Interesting. Here is an example of a checkerboard and simple zDefocus. See > how the performance of the GPU Enabled one is worse? Perhaps something is > screwed up with my card that I don't know about. > > [image: Inline image 1] > > On Sun, Dec 4, 2016 at 2:39 PM, Marten Blumen <[email protected]> wrote: > >> On MacOS & Cuda 8, it's 5x faster on the GPU. >> >> On 5 December 2016 at 11:37, Nick Guth <[email protected]> wrote: >> >>> Just tested with GPU-Z and it's reporting only 998 MB of memory usage >>> with my test script. I saw a peak of 1800MB when playing back the script in >>> the viewer. Definitely not hitting the 6144 MB cap on the card. >>> >>> This is so bizarre! >>> >>> On Sun, Dec 4, 2016 at 2:26 PM, Nick Guth <[email protected]> wrote: >>> >>>> I don't believe it is running out of memory. It's something I noticed >>>> when I updated to CUDA 8. Maybe nuke isn't fully supporting to the newest >>>> nvidia drivers? >>>> >>>> On Sun, Dec 4, 2016 at 11:46 AM, Marten Blumen <[email protected]> >>>> wrote: >>>> >>>>> Unless the GPU is running out of memory, it's usually very fast. >>>>> >>>>> On 5 December 2016 at 01:04, Nick Guth <[email protected]> wrote: >>>>> >>>>>> Nuke seems to process frames slower when 'Use GPU if available' is >>>>>> checked. I think it's just ignoring the GPU altogether. >>>>>> >>>>>> Windows 10 (Anniversary) >>>>>> 980Ti (376.09 Drivers) >>>>>> Nuke 10.0v3 >>>>>> m.2 Storage >>>>>> i7 - 6950x (20 threads in nuke) >>>>>> >>>>>> Any ideas? The viewer refreshes painfully slow with it enabled. I ran >>>>>> a small test with GPU on/off with Kronos and using GPU produced a longer >>>>>> total render time by 21 seconds (3:52 vs 4:13). >>>>>> >>>>>> Cheers. >>>>>> >>>>>> _______________________________________________ >>>>>> Nuke-users mailing list >>>>>> [email protected], http://forums.thefoundry.co.uk/ >>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Nuke-users mailing list >>>>> [email protected], http://forums.thefoundry.co.uk/ >>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>> >>>> >>>> >>>> >>>> -- >>>> Nick Guth >>>> motion . composite . design >>>> www.nickguth.com >>>> >>> >>> >>> >>> -- >>> Nick Guth >>> motion . composite . design >>> www.nickguth.com >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> > > > > -- > Nick Guth > motion . composite . design > www.nickguth.com > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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