Has to load the file to read it always. Can't just load part of a little endian file pretty sure. I know here I can load a beauty pass and scrub it and play around with it and do all kinds of fun things. When some 3d guy decides to put 50 passes (10-15) it take longer to load and they are don't scrub.
Randy S. Little http://www.rslittle.com/ http://www.imdb.com/name/nm2325729/ On Fri, Sep 11, 2015 at 1:53 PM, Thorsten Kaufmann < [email protected]> wrote: > This is not really true with multipart EXR files anymore. If files are > interleaved by layer rathern than by scanline you loose the benefits but > gain performance compared to multiple sequences. I have yet to do a full > performance check but the boost seems to be rather big if you do not use > all channels (if you use all channels it should not matter anyways, should > it). > > > I expect multichannel to still have some overhead maybe, but given the > downsides of splitting exrs (too many open file handles anyone?) This is a > use case decicsion i would say. > > > Cheers, > > Thorsten > > > --- > Thorsten Kaufmann > Production Pipeline Architect > > Mackevision Medien Design GmbH > Forststraße 7 > 70174 Stuttgart > > T +49 711 93 30 48 606 > F +49 711 93 30 48 90 > M +49 151 19 55 55 02 > > [email protected] > www.mackevision.com > > Geschäftsführer: Armin Pohl, Joachim Lincke > HRB 243735 Amtsgericht Stuttgart > > --- > *VFX:* Game of Thrones, Season 5 – VFX making of reel > <https://vimeo.com/133433110>. > * TWITTER | ADOBE BEHANCE:* Follow us on Twitter > <https://twitter.com/Mackevision> and Adobe Behance > <https://www.behance.net/mackevision>. > ------------------------------ > *Von:* [email protected] < > [email protected]> im Auftrag von Randy Little < > [email protected]> > *Gesendet:* Freitag, 11. September 2015 22:06 > *An:* Nuke user discussion > *Betreff:* Re: [Nuke-users] Multipart multichannel exrs vs. separate exrs > > big huge all passes in a exr is slow. Has to read entire file (75MB+) to > find the channel you want that might be 200KB every single time you want to > deal with that little mask channel. They also seem to take longer to > render out of 3d. We usually break them up by math type and try not to > stuff 20 passes into a file. > > Randy S. Little > http://www.rslittle.com/ > http://www.imdb.com/name/nm2325729/ > > > > On Fri, Sep 11, 2015 at 2:31 AM, Johannes Hezer <[email protected]> > wrote: > >> Hey everyone, >> >> A bit of a survey question... Is anyone using multipart exrs ? >> We have been using them for 2 projects and we have not done any >> performance profiling, but I am not 100% sure if it is a speed bost or not, >> compared to multichannel 1.xxx exrs. >> I was hoping might come close to splitted exrs (each layer in a single >> file) ... >> >> Looking forward to some input >> >> Cheers >> Johannes >> >> Von meinem iPhone gesendet >> >> ____ ESET 12236 (20150911) ____ >> The message was checked by ESET Mail Security. >> >> _______________________________________________ >> 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 >
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