A Nightmare render
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Hi, could someone help me with this render?
I needed resolution 1600x1200 - but I am rendering it more than 6 days and it still is not finished!
I really do not know why... I could understand 14-24 hours with scene like this, but not days..
When I tried to render - it was slow white walls without any reflections too..
I tried to turn off spotlights but it didn´t help for render time..
It is a problem with lighting, materials or render settings?
Thank youMy scene: http://leteckaposta.cz/745036577
Visopt: http://leteckaposta.cz/491546945
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Have you ran Goldilocks on your model? sounds like you have some seriously small geometry in there somewhere.
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vray doesn't really care much about too much geometry. Once the mesh is loaded, you should be fine. I would guess there's either displacement in a material that is causing a hangup, or else you've got some very high subdivisions in something that causes vray to spend too long to process parts of the scene. I'll take a look and see if I can find any culprit.
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I see what you mean. Doing a material override render runs pretty quick (8 minutes at 800x600 on a single machine.) So it seems lighting and vropt settings are OK.
Must be some material setting that's messing things up. Nothing jumps out at me - didn't see any displacement materials. But when I try a regular render it just crawls. I'll keep looking when I have a chance. Maybe someone else will see something I didn't. -
Please use the "pack scene" feature when sharing scenes. It's possible the slowdown could be related to external assets such as IES profiles, high resolution textures, etc. I see in this case that Andy was able to reproduce the issue without the external assets, but I highly recommend sharing that way in the future.
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No No No! Never EVER wait this long for a render. This is just insanity. I just rendered a 4500 pixel wide interior at the highest settings and it took 2.5 hours. Granted, this all depends on your workstation setup. What kind of machine(s) do you have? No one should have render times like this... except Maxwell users.
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@andybot said:
Maybe someone else will see something I didn't.
hmm.. i also didn't see the message prior to rendering which said "warning: this render is going to take more than a week to finish if you click start"
ok.. i didn't really try it.. just assuming that message didn't pop up.
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@valerostudio said:
No No No! Never EVER wait this long for a render. This is just insanity. I just rendered a 4500 pixel wide interior at the highest settings and it took 2.5 hours. Granted, this all depends on your workstation setup. What kind of machine(s) do you have? No one should have render times like this... except Maxwell users.
I tried to render smaller version 1280x960 - I started yesterday evening after Andybot reply and again it still is not finished - only 45% as attached ..
I have one machine: Intel Core i7,- 2640M CPU 2,80GHz, RAM 8GB, Win 7
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after I tried rendering your scene, I then went on to do some other work, and vray kept having problems. I finally had to reinstall because DR stopped working. I'd suggest packing the scene like Devin mentioned and sending to support. There's definitely some problem in the scene, I just don't have time to drill down through the model.
A way to troubleshoot something like this by yourself is start with the material override rendering (you'll find in the Global switches) and when that renders OK, start adding in materials. By that I mean, go to each material in the vray editor and uncheck the option "Can be Overridden" The renders should go pretty quick with the override, until you find the problem materials, then the render will crawl again. I'm guessing, since I don't have time to do that in this case. Who knows, there could be some completely other problem. Unfortunately, there is no window that pops up "this will take a week to render"
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Could you pack the scene (Plugins>V-Ray> Pack Scene) and reshare it with the community in another post. Id like to test this and see whats actually going on, but you are missing a lot of information in the last shared model.
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I don't have time to play with this scene at the moment, but as a heads up, there are more buttons than "override materials" in our options that could help track down your issue. You could toggle off reflections/refractions, maps, and displacement. Turning one of those off should speed up your render most likely, if it's true that using override materials speeds up the render time dramatically. Once you figure out which thing is slowing you down, you can go on a hunt for the offending material that is using whatever you toggled off.
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@tedvitale_cg said:
Could you pack the scene (Plugins>V-Ray> Pack Scene) and reshare it with the community in another post. Id like to test this and see whats actually going on, but you are missing a lot of information in the last shared model.
Hi, I have made a copy of existing file (becouse I am still rendering
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please see a following link for packed scene: http://leteckaposta.cz/880330958 -
@dkendig said:
Please use the "pack scene" feature when sharing scenes. It's possible the slowdown could be related to external assets such as IES profiles, high resolution textures, etc. I see in this case that Andy was able to reproduce the issue without the external assets, but I highly recommend sharing that way in the future.
Hi, here is the link with packed scene: http://leteckaposta.cz/880330958
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@doppel said:
I found this : one reason that your render is incredibly long is one or several materials.
I delete all your materials and the render was very fast.You don't have to delete the materials, you can just use the material override as mentioned earlier.
ps. you can also go to the debugging tools in vray and clear the vray material information from the Sketchup model. That's a much less destructive step if you want to rebuild the materials in your model.
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Yes. But i wasn't able to use it. The override material function didn't work sometimes, because of trouble with some materials. And it didn't work on this sketchup file
Override Material problem here : http://sketchucation.com/forums/viewtopic.php?f=322%26amp;t=59900
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@doppel said:
Yes. But i wasn't able to use it. The override material function didn't work sometimes, because of trouble with some materials. And it didn't work on this sketchup file
Override Material problem here : http://sketchucation.com/forums/viewtopic.php?f=322%26amp;t=59900
Please make sure you are using the current service release #3. There have been numerous bugfixes over previous versions.
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I tried to copy and paste the whole thing into a new file and it crashed SU. Not sure what's up with this but I have to assume its all of these imported models and random texture names and setups. After running a Regenerate All Materials in the Debug menu I tried to render and it got through the light passes but would not final render. Then I loaded the default render settings (this is all in 2.0 SU2015x64 BTW) and it rendered 800 pixel wide in 30 seconds. There is just something funky in your setups, I would save the time in hunting and just reset everything and recreate your materials. Not the best solution, but it will fix the issue.
I saw a few things that might be the issue with the materials.
1- there is a glass material that I would just use a 'cheat glass' - a 100% transparent diffuse with a simple reflection layer set to Fresnel. I don't understand folks who use refraction layers on windows.I never found it added anything to the material. Maybe I am wrong.
in the names. Not sure if these are supported. -
After defaulting all materials and render settings, it rendered in a couple of minutes. I reloaded the nightmare.visopt and fixed the IR and LC settings as they were set to render from file, and it rendered fine with the settings too. So in conclusion, there is a funky material, probably something from an older version of VR in there. Unfortunately, this legacy stuff needs to be reset and start from fresh.
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you know, I tried fixing a few of those obvious things. Like rename that material with the funny characters, turned down some bump maps below 1.0, deleted a few area lights that had a value of 50 default units. The funny thing is, the render crawled even when rendering over a simple diffuse area, so I'm guessing there is some interaction going on with some of the lighting and some material, that it's not just strictly a material problem.
Also - the first thing I did was load the interior high preset. Yeah, should have loaded default settings, that sounds like the better option.
Edit: nope, loading default didn't help either. Doesn't seem to be an option settings problem.
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I tried your sketchup file, and I agree that the render takes abnormally too much time.
I found this : one reason that your render is incredibly long is because one or several materials.
I delete all your materials and the render was very fast.But i don't know which material makes you trouble
EDIT : i do this override material render with your settings (except for the output settings)
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