View Full Version : Mental ray eating ram for breakfast

07 July 2005, 09:22 PM
Hi everyone,

I'm trying to render a still from a composition.

I'm building up a fire over a picture to make a short effect, I tried to render with mental ray from a friend advice, but as soon as I hit render, mem goes up to 200mb-300mb(all fine) then suddenly 1000mb it stucks for a minute and then Max Crash....

there are 5million poly in the still.....but I never so it blocking....

ever happened to you?

thank you for your help and time.


APP:Max 7
AMD barton 3200+
2048MB Corsair XMS

07 July 2005, 10:00 PM
I've never had it crash on me like that when using MR...I only have 1.5 gig of ram. It is normal for MR to use a ton of ram when calculating photon emmision, then after that I think it switches over to your pcu. so it is normal for it to use that much.

07 July 2005, 10:51 PM
Bitmap Pager, dont know why max doesn't enable this by default.

07 July 2005, 03:12 AM
Set your systems virtual memory (paging file size) to twice that of your RAM for both minimum and maximum.

To change it go Start>Settings>Control Panel>System>Advanced tab>Performance Options >Change

Reboot after you make your change and it will write to your pagefile when your system runs out of RAM.

07 July 2005, 10:45 AM
there should be an option in Render Settings ('m not a max user :)) to limit the maximum ram amount that mray can use.

07 July 2005, 12:49 PM
and.. well... 5 millions vertexes with GI may be well over the top by the way. admit it, you modeled a high res hedgehog with each spike being meshmoothed??

07 July 2005, 01:58 PM
Thanks for the replies.

PureFire: I will give it a try tonight.

deumilcat: it's actually all particels, it's picture of few houses and there is fire behid the first row, I'm using a PF to make realistic smoke....quite heavy but looks good (still have to improve the texture)

I checked the render time for the video, it will take 2 days..... :(, do you have a render farm to rent? :D


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07 July 2005, 01:58 PM
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