JamesTaylor Posted September 29, 2006 Share Posted September 29, 2006 I have a deadline fast approaching and am struggling to get the final images rendered. I have a complete scene, housing estate, ready to go using LC and Irr Map.... its a heavy scene with plenty of Vray Proxies in there, although i have now ripped out everything that isn't needed in a particular shot, making it much lighter - i knoe i have managed to render larger scenes than this. My problem is that, rendering thro backburner (in the same way as i have done every other time), once the Light Cache calculation has completed and the "pre-filtering of lightcache started" the render sequence crashes????? I have been playing with this for a good 1.5 days now.......tried lowering image resolution etc etc????? any suggestions much appreciated... really need to have these images rendering over the weekend Link to comment Share on other sites More sharing options...
FlytE Posted September 29, 2006 Share Posted September 29, 2006 Ive had this problem on a number of occasions. What version of vray are you using? I think at one point I eventually just used qmc instead of lightcache.... Link to comment Share on other sites More sharing options...
JamesTaylor Posted September 29, 2006 Author Share Posted September 29, 2006 I'm still back on 1.47 (project beens running for quite some time.... loads of changes) I've now managed to get the image rendering.... I have to render 10 images from the estate / scene so i've started creating individual files for each image required and stripping everything out for that isn't need in that particular image. I've also lowered the resolution and the 1st one is rendering..... not sure if this is gonna work for every image, could be a bit hit and miss. Andy, i know that using QMC will be slower, but that isn't really a problem for me.... but what is the advantage of using QMC against LC in this instance? Does QMC generally allow a larger / heavier scene to be rendered? Is it using less resources of the render node, so leaving more available for the scene etc. Thanks for the suggestion, will give it ago but if you could give more info / explanation it'd be appreciated.... don't want to be going down a blind ally etc!! Cheers Link to comment Share on other sites More sharing options...
FlytE Posted September 29, 2006 Share Posted September 29, 2006 but what is the advantage of using QMC against LC in this instance? Probably not alot to be gained as such, other than the fact that the lightcache is crashing your machine, and (in my experience) qmc wont. Its just a brute force fix if you cant figure out why lightcache is giving you problems. Link to comment Share on other sites More sharing options...
JamesTaylor Posted September 29, 2006 Author Share Posted September 29, 2006 My gut feeling is that the crashing is caused by running out of memory.... but throughout my attempts to get it to render, the crash has occurred at the same point, after the LC has calculated during prefiltering. This is what i find odd as its obviously able to handle the scene until this stage even at its heaviest - complete estate of 38 houses with complete planting as vray proxies....... when i delete everything that isn't in shot etc i'd have thought this would free enough extra memory to be able to render??? I now have a QMC version on the farm, so we'll see how it goes.... so far its working so you may be right that its the LC not memory prob. Cheers Link to comment Share on other sites More sharing options...
lambros Posted September 29, 2006 Share Posted September 29, 2006 I have been having this problems several times before, and it seems it is a memory problem, although my pc has 2 gbs of ram. Using too many onyx trees seemed to be the cause, so deleting some of them got rid of the problem Link to comment Share on other sites More sharing options...
JamesTaylor Posted September 29, 2006 Author Share Posted September 29, 2006 I have a lot of Onyx trees also as vray proxies, although deleting them and also deleting majority of site, as mentioned earlier, hasn't made much difference. I did eventually get the LC to render, again as mentioned earlier, but at the moment Andy's suggestion of reverting to QMC is working out the best. I will comfirm how it turns out and wether i get everything rendered as i'm currently working thro and trying to test each images rendering capacity so i can leave it over the weekend with confidence. Link to comment Share on other sites More sharing options...
Joseph Petrino Posted September 29, 2006 Share Posted September 29, 2006 I've had this problem also many times. Sometimes its on very small files with very little memory used. When I switched to (QMC or none even) it just hung in another place during the rendering. I read a post somewhere a few days ago about this and the user claimed that shortening object names to 8 characters solved the problem for him. Sounds crazy I know. Just a thought. Link to comment Share on other sites More sharing options...
JamesTaylor Posted October 9, 2006 Author Share Posted October 9, 2006 sorry, was going to let you know i got with this...... Turning it to QMC seems to sort everything out, left them rendering over the weekend and everything was complete by monday morning so thanks for all your suggestions, much appreciated Andy.... was getting to crunch time and i almost lost my weekend because of it!!!! Link to comment Share on other sites More sharing options...
martin walker Posted October 20, 2006 Share Posted October 20, 2006 im having the same problem....subdiv set to 1000, sample size 0.05, number of passes 4. can it be anything to do with reconstruction paramters ie will turning "Use LC for Glossy Rays off" help I have my GI Environment set to Mult 7.0...could this be a problem ? this only seems to occur on interior scenes....no problems at all on externals I was hoping 1.5 might fix this Link to comment Share on other sites More sharing options...
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