Hi, On Tue, Apr 2, 2019 at 8:52 AM Robert Osfield <robert.osfi...@gmail.com> wrote: > > Hi Chris, > > On Mon, 1 Apr 2019 at 21:41, Chris Hanson <xe...@alphapixel.com> wrote: > > I don't have any modern Apples to Apples comparisons to cite. > > > > I do know, that if you recall, we ran into threading issues when dealing > > with the massive plenoptic display IG back in 2015 or so on AMD cards, and > > it needed special assistance from AMD to unclog it. > > In this case I have a AMD CPU with a NVidia graphics card so a bit of > different set of things that could cause issues. > > One test I did yesterday afternoon was to try clang-7 on my new AMD > system but didn't see any performance notable difference.
Could it be the inter-CCX latency specific to Ryzen? https://community.amd.com/thread/215519 In this case you might want to use taskset. The following should limit the command to the first CCX if HT is enabled: taskset -c 0-7 <osgApp> Cheers François > > Do you know Graham Sellers at AMD? Maybe we could get some advising from > > him. > > I don't know Graham, is he on the graphics or CPU side? > > Cheers, > Robert. > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
