Fortinbras79 Posted July 6, 2011 Share Posted July 6, 2011 Morning Archies, I recently received a new computer for rendering from my office. It is an amazing maching with 12 cpus and oodles of RAM. It does an amazing job of creating renders at blinding speed, that is, unless I use the vray displacement mod. The second I use any displacement, suddenly I am leaving a render overnight and coming back to 100 hours remaining. What setting can I adjust in order to make the displacement render faster? There has got to be a fix!!! (using Max 2011 and Vray's most recent release.) Thank you so much Link to comment Share on other sites More sharing options...
matthewgriswold Posted July 6, 2011 Share Posted July 6, 2011 I had the same problem recently and the setting that I found to have the most change in render times was the Subdivisions. But, this only has bearing on the beginning of the rendering, when it begins to process the displacement. Are you making it past this first stage, or does it get stuck preparing the displacement? Link to comment Share on other sites More sharing options...
Fortinbras79 Posted July 6, 2011 Author Share Posted July 6, 2011 It is happening in the beginning of the action. When I came in this morning, it was stuck on "unloading geometry." This is not to say that it hadn't spent all night doing the initial passes, it was just where it happened to be when I stopped it. But it did seem to be stuck. And of course, unloading geometry is like the first step...so... I'll try lowering my subdivisions and see what happens...currently it is set at 256 (which seems low to me.) Link to comment Share on other sites More sharing options...
matthewgriswold Posted July 6, 2011 Share Posted July 6, 2011 It's actually 256 (squared) subdivisions. So, 65536 subdivisions total. I got away with lowering to around 120, but it's relative to the amount of detail you need in your mesh. I was creating board-formed concrete, so a little roughness in the displacement wasn't a bad thing. If worse-comes-to-worse, tessellate your mesh to trade off for the lower subdivisions. Link to comment Share on other sites More sharing options...
matthewgriswold Posted July 6, 2011 Share Posted July 6, 2011 You might also toy with your dynamic memory limit...I think displacement is considered a dynamic geometry. Link to comment Share on other sites More sharing options...
matthewgriswold Posted July 8, 2011 Share Posted July 8, 2011 Thomas, did you get your displacement optimized enough to work? What exactly were you displacing? Link to comment Share on other sites More sharing options...
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