8.5 ,,, Slower Than 7.0?

[skullmunky]

comparing 64 bit linux 8.5 vs 32 bit linux 8.5, to decide whether 64 bit is worth it using the zoorender mental ray benchmark scene. answer: yes, 64 bit is worth it. but, found something puzzling - 32 bit maya 7 rendered faster than 32 bit maya 8.5! does that seem right? same scene, should be the same settings ... unless there's something i'm missing about configuring MR in 8.5 ...

thanks,
skullmunky

[georgep1]

I could be wrong about this, but I believe 8.5 calculates final gather differently than 7, so you can get the same results with much lower settings. I know that by default maya 8.5 has different ways of setting up final gather than the min/max radius used with 7, but I think there is a switch to use the old fashioned min/max radius....whether this calculates it the same way as 7, im not sure, but this might have something to do wtih it.

[joojaa]

yes maya 7 1000 rays approximately does the same job as 100 or 150 in 8.5. But also the point sampling si way different than it was in 7. whare it was screen space metrics, now its spherical interpolation areas of varying sizes.

its like comparing a ant with a spider