I just said that someone on Ars-technica did a test and found that using hyperthreading was faster then not using it. Not that I tested it.
-deke On Fri, Feb 3, 2012 at 16:59, Randy Little <[email protected]> wrote: > Peter and Deke both said thats not the case anymore and that using the hyper > threads since westmer i7 came out would be just as fast. To which I said > what you just said. I just wanted to verify it. In fact even in comp in > the GUI 8 is faster then 16. So either Peter and Deke are wrong or Mac > threading isn't on par with the other platforms. > > Randy S. Little > http://reel.rslittle.com > http://imdb.com/name/nm2325729/ > > > > > On Fri, Feb 3, 2012 at 16:42, Nathan Rusch <[email protected]> wrote: >> >> I would actually *expect* the two separate instances of 8 threads apiece >> to outperform a single instance using 16, for a couple reasons: >> >> 1) Not everything in Nuke is multithreaded. Throwing more threads at some >> things won’t get you anywhere, but throwing (effectively) two machines at >> them will. >> >> 2) There have been test results both from within The Foundry (albeit some >> time ago) and from end users reporting performance degradation when trying >> to get Nuke to make full use of virtual CPUs. Single-threaded operators >> notwithstanding, a performance increase using two 8-thread processes (even >> though they’re technically utilizing the virtual cores) could be the result >> of letting the OS kernel handle the CPU scheduling for the virtual cores >> between the two processes. >> >> -Nathan >> >> >> From: Randy Little >> Sent: Friday, February 03, 2012 4:07 PM >> To: Nuke user discussion >> Subject: Re: [Nuke-users] Threads >> >> dual quad xeon 8 cores real 8 virtual. (westmers?) running 2 instances >> with 8 shouldn't be faster then a single 16 especially if you take all the >> extra memory and i/o thats happening since its doubled. (this just goes back >> to that previous thread where they where asking to change the default >> threads to include the virtual cores. >> >> Randy S. Little >> http://reel.rslittle.com >> http://imdb.com/name/nm2325729/ >> >> >> >> >> On Fri, Feb 3, 2012 at 15:54, Nathan Rusch <[email protected]> >> wrote: >>> >>> How many physical cores do you have? >>> >>> -Nathan >>> >>> >>> From: Randy Little >>> Sent: Friday, February 03, 2012 3:47 PM >>> To: Nuke user discussion >>> Subject: [Nuke-users] Threads >>> >>> ok after the previous conversation I did some test here. on current gen >>> xeon MACS. literally I can render 2 of the same comp with interleaved >>> frames significantly faster then the same comp set to 16 threads. Its not >>> even close. LIke 30% faster to render 2 instances of nuke on the same comp >>> with 8 threads vs one version on 16. Are we still having threading issues >>> on the Mac side. >>> >>> Randy S. Little >>> http://www.rslittle.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 >> >> >> >> ________________________________ >> _______________________________________________ >> 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 > > > > _______________________________________________ > 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
