tasi55

Hey man, My turn to jump on your thread!!hehe What you have said has interested me. Im having similar problems, Vray was crashing and I have 12 GB ram. But its not crashing now, rather it is taking a very long time (15hours +), I have a few detailed proxies. How would you set it up? This is what I have now: Dynamic memory limit: 6000MB Default Geometry: Static I have tried other combos: Dynamic memory limit: 8000MB Default Geometry: Auto + Dynamic Could it be possible that I am setting the limit way to high? Mervin, the little tool I used, but dont really need now is called "Instant Memory Cleaner" by Vasilios Freeware, google that and download, easy to use!!! But its a quick fix to a deeper problem, dont rely on it. Its a cheat if you have a deadline. Cheers mate

Yeah, once this render is complete I will post a screen for sure, I am pretty certain that it is the Vray proxies now, I set the default geometry back to 'Static' and everything is rendering fine, no crash, BUT its taking ages when it gets the the proxies. But only the proxies that are in the distance. The ones the are closeup resolve in a matter of a few minutes. WEIRD. I have a large grass surface with Vray Displace Mod applied. That seems to render pretty quickly. Just a thought, could the Zdepth that I have applied in Render elements have anything to do with this? My min is 0 and my max is 1200m, its a big scene. Could this be why things in the distance take ages to render???? Im using it so that I can play with DOF in post/photoshop. Also the leaves on these trees that are proxys have opacity and translucent maps. I disabled the opacity maps but not the translucent maps. Could this help? I have to get these render times down, this 3500 x 1575 image is taking well over 30 hours. I did region render and the first half finished in 17 hours.

Hi again, Yeah, WAcky is right, I wouldn't suggest this as a means to solving this problem, it is just that my deadline is tight and dont have the time to strip down the scene. I have tried every suggestion I could think off, both static and dynamic settings for default geometry and it seems that it gets more done with the static setting. But by the looks of it, only thing left to do is region render the scene in 4 pieces. Will see how that goes. Also, if I have dark patch areas (in the dark areas, for instance under a wharf) do I increase the HSphere Subdivs, it is at 50 at the moment, Interp Samples - 20 and at Medium setting. Any thoughts?

Hi all, well thanks guys for all the help you have given me. I still havent successfully completed an image out of Vray but things have been a bit better. Im rendering as I write this. I found that when I tried Irradiance map, I was getting these really dark patch areas on the dark parts of my image, the building is on a reclaimed land plinth/platform in the middle of a harbour and the deck/boardwalk overhang shadows parts of the platform base, it is one this concrete that there are major patches showing. I do this with Brute Force, its not patchy but there is the obvious noise issue, which I can fix by lowering CLR Thresh and upping subdivisions. Not a biggy though because the grain actually doesnt look too bad. I have also changed my maps from png to jpg, this seemed to speed things up a bit. In regards to memory, all my vray proxy trees had opacity maps for the leaves so I disabled opacity maps for the trees in the background. Also, dont know if this is the best thing, but it seems to be working. I have 12 GB of memory and I set the Dynamic Memory Limit to 10,000MB, after a few hours I would return and the vray had frozen and hit the limit. I have found a Mem cleaner for free, whenever my memory climbs to high, I clean it and it seems to work. Wont know for sure if this works until I get to the end of this, in a few hours. Thanks once again WAcky and Arnold !!

Hey Arnold, Firstly would like to thank you for your thought out response, really appreciate you taking the time to help, all too often I see in forums guys adding their 5 cents of sarcasm in to massage their egos. Being a self taught newbie to Vray, its a bit daunty. I have decided to give Lightcache a go, Brute Force was just taking ridiculously long and getting worried cos I have a week left till submission and heaps to do. At this moment I am rendering out a Light cache and Irradiance Map at 2000 x 900. Then I am going to render at 3500 x 1575 using these saved files. I read about this method on a post Chris Nichols commented on, seemed like a good idea so Ill give it a try. This way, I can try to get familiar with Irradiance Map and optimizing its settings. You got any suggestions?hehehe... But yeah, I don't know if the displacement in my scene was the problem because the regions with the Vray displacement seemed to render fairly quickly in comparison to my darker regions. My proxied trees in the background do tend to make Vray crawl a little though, but I do not know what I can do with these to speed things up as they are already proxies! One thing I did change was my Dynamic Memory Limit from 1000mb to 10000mb. I dont know if this is speeding things up at all, but I do hope that it prevents max crashing. For your final renders, with glossy regions (glass) and large water surfaces with displace (a small harbour), what settings would you specify for Irradiance Map and Image sampling? I know this is vague, but I have read tutorials and cannot get anything that satifies this scene. I saw a great video on Brute Force and LC by Chris Nichols, so I have basically been playing around with AA settings (ie, Max samples, Clr Thresh..) Thanks heaps for the help (and for reading this long post!!!)

Hi again, With Irradiance map, I left it for about an hour, not even one bucket had rendered and the estimated time is around 16 hours. I really dont know what is wrong, I was using Brute Force as I saw a tutorial by Chris Nichols. Have read heaps of forums and info and my performance is shocking. I might just have to go to Brute Force and do the wait, I have a complex scene with displacement on a the majority of the scene as well as a whole heap of vray proxied trees in the background. This is for a portfolio for my application to do postgrad in Melbourne, deadline is approaching. In your scenes, what settings would you use for you final quality renders and how long would you expect to wait. Thanks once again for all the help you have giving, it is much appreciated. Cheers

Thanks for the advice, just before I received your message I read something about the Dynamic Memory limit. I put it up to 8000mb. Its rendering now. The only problem is, the crash happened after like 13 hours of rendering. I used Brute Force and Lightcache. Its rendering as I write this, but I made my primary Irr Map, going to see if this gives me the results I want. Only problem is that I anticipate those splotchy areas, hopefully not.

So what would you suggest? I have 12 GB of memory. The only reason I have such a large render size is because when I did 2000 x 900pix, it came up too small in photoshop. If I increased the size in photoshop, to what I wanted it wasnt crisp anymore.

Hey guys, Losing hair and sleep on this on. Doing my first large Vray render, had been rendering for 12 hours, woke up in the morning to see my lovely finished image to the news that it had crashed. Using the image in a printed portfolio, image is going to need to be 300dpi in Photoshop, so in VRAY resolution was set at 4000 x 1800. It needs to span across an A3 page. When I did a test at 2000x 900, was big on screen but as you know, on paper was half the size that I wanted so I increased resolution. Does anyone know how to attack this. My machine should be more than enough to tackle this but it crashed! Im running an Vista x64 i7 system with 12GB Ram. Could someone please help. I used Brute Force to get the detail I want, looked good, but crashed. And I dont think the setting were extremely high. Scene is a building situated on the water with lots of Vray Proxy trees in the background. Didnt want to use Irr Map because of blurry reflections. I have attached a screen shot of my settings. Any help would be much appreciated!!! Thanks people.

Hi guys, Been trying successfully solve this one but no luck. Workflow is this, I have designed and modelled a building in 3D Studio Max, now I need to get nice clean drawings from the model done in Autocad. Does anyone have a good workflow for this? I have tried the FLATSHOT command in Autocad and had no success and I cannot use the SECTION tools in Autocad either. Can someone please help!! Thanks guys

Cool, but do you think its normal for it to be taking 25+ hours for a 2000 x 900 image to render out. My machine aint slow, hard for me to know because this is my first proper Vray render. Thanks for the advice though, will give it a try.

From reading tutorials and so forth, says that Brute Force is more accurate especially when you have blurry, glossy aspects which I have a lot of. But I must say I have tried the Irradiance Map + Lightcache combo and I can deal with the slight noise in the blurry reflections. Got it down to 9 Hours for a 1900 x 850 render. I think the reason why it could be taking so long is because its an interior night shot with heaps of IES lights.

Hi Guys, Doing a render for portfolio, all is done, just need to know if this is normal. Im in the process of renderinf my first 'Final-High Settings' image out of Vray. Here are the settings: Output Resolution: 1920 x 850 Adaptive DMC Vray Lanczos Filter Min SubDivs: 2 Max SubDivs: 20 Clr Thresh: 0.001 Primary: Brute Force @ 16 Subdivisions Secondary: Lightcache @ 1600 Subdivisions w/ Glossy Rays checked Its and interior shot of an open space with glass and glossy wood but is it normal to see a render like this take up to 30 Hours to render????? I have an I7 system with 12Gigs Ram. Its rendering as I write this, but the estimated time is climbing close to 40 hours. PLEASE HELP!!!!

Thanks guys, being a student, might have to plan a bank heist to get my hands on it. Thanks for the input.

Try googling this, Cebas Scalpel, never used it myself but this dude said he used it at Uni, section came out nice and clean. Good luck.