Why the render is cutting down..

[shikodesign2000]

I don't know why when I render large scenes with cars and trees with high resolution 3000*2500 for example, the render is shut down during the process, I use proxies but no hope, can anyone tell me please the reason??

I'm really in big problem, cause I have to deliver this still very soon.

Edited August 26, 2008 by shikodesign2000

[Eric Sosa]

hey sherif,

 

it is a memory issue. check the size of your file, even with proxis it should not be very big or it won't render. if you have displacement you are also in trouble.

 

there are several solutions to your problems, simply search at this very forum for it.

 

u got quad or a 2 x quad, 64 bit pc running smooth with 12 gb ram or more...then you should not be in any trouble. i suppose you do not have one.

 

good luck

 

regards

Edited August 27, 2008 by Eric Sosa

[fourthand11]

without seeing your scene, i'm betting its a displacement thing. if so, adjust the settings and test.

[BrianKitts]

It's probably not a problem with the displacement or proxies, it's just the fact that rendering larger scenes requires the frame buffer to hold more information for the larger rendering size, and that's what's eating up the rest of your RAM causing you to crash. When you hit the render button one of the first thing it does it to allocate the memory it will need to store and display the image on screen, once that memory is gone and it starts to load the rest of your scene it runs out of RAM.

 

If you turn off the both the max and vray frame buffer the render out to file you will probably complete without crashing.

Edited August 26, 2008 by BrianKitts

[shikodesign2000]

Thanks very much my friends for your advieces.

 

Please Brian tell me where I can find: (max and vray frame buffer)

I made right click on the viewport label and turned off the (z-buffer wire frame object)..is that just what you meant??I'm waiting your reply.

[BrianKitts]

see images....

 

just make sure you use max, or the vrimg to save the render....

[shikodesign2000]

It shuts down.. but I'm keeping trying, I'll try to put high values in (Get resolution from max) in the second image.

I'll try to put the same still resolution 2000*2500

I know ofcourse that the best solution is to render only buildings, then put the rest in photoshop, but what I can do?? I can't convince with anything but the 3d models.

[Nic H]

64 bit, do it.

[BrianKitts]

How much ram does your system have?

[shikodesign2000]

3 gegas..

[Eric Sosa]

3 gb?... nope, not enough. u'r best shot, under the situation is to "region render" ; make small region renders until you make the hole render, then in photoshop simply put them together.

 

I had once a similar problem with dissplaced grass...a nightmare indeed, so, I did spend the hole nigth making manually those "region" renders until the A3 size render was finished!!. hey, I did finish the render on time and my costumer was very happy with the result

 

try to get a much better pc for big renders sherif... at least a quad, 64 bit with lots of memory ram supported by the system and max.

 

gl .. Eric

[shikodesign2000]

Thanks Eric, I'll make this ofcourse..

[shikodesign2000]

strange thing happens when i use (render region option): when I render the first region, it's ok, it renders it with no problems, but when I select another region to render, it adds it on the first one and I got the two regions, and I want just the second for saving time and memory..

 

The same thing happens when I select another separate third region: I got the 3 selected region!!

 

How I can every region alone??

[Eric Sosa]

when making a region render, you need to make, for example, a wide rectangle covering completelly the frame from left to rigth in the lowest part, press render (small command at the bottom rigth of the viewport), & save after finishing, then MOVE the SAME rectangle up to cover a new portion of the frame, just above the the latest render & press render again and SAVE as a new file. do the same procedure until you cover the hole frame....you should NOT make a new rectangle everytime..use the SAME rectangle (region render).

 

.....hope you are doing this properly.

[shikodesign2000]

I know this ofcourse Eric, but the problem is that the first region is rendered again+ the second one..anyhow, I found a quick solution, is to reset max and open again, it solve it for this time:)

[mfured20]

hey Sherif,

 

i know its probably too late, but one thing you can do to save memory is set your computer up to do a strip render. start the autodesk backburner manager running on your machine while you still have your file open. instead of trying to render each portion at a time, click 'net render' and submit the whole job that way, the view, not a section. make sure that, when the net render dialouge comes up, you click on the 'split scan lines' option. this will let the image get rendered in several different strips. when you submit it to the manager, the manager will look for a server to send it to, but won't find one. after submission, shut down your main max file, and open autodesk server. now that the manager can find the server, it will send the strips to the server one at a time, and each strip should be small enough to render without crashing. i did this yesterday, an arial image with a couple dozen tree proxies at 15,000 x 12,500 px, and it didnt crash.

 

problems -

- sometimes the strips won't reassemble when they finish rendering, but thats ok, you can put them together in photoshop.

- also, depending on the lighting setup, the seams between the strips can be visible. when each strip renders, it comes up with its own GI solution, recaculates it each time, and they aren't always exactly the same. this can be fixed in photoshop as well.

 

 

anyway, if my description of what to do is too rough, i will elaborate, and maybe next time you can avoid crashing.