All posts relating to Maxwell Render 1.x
By Stinkie7000
#276263
Does anyone know how much MutliLight affects RAM usage? I have plenty of RAM, but I'm wondering nonetheless.

Is there a formula or something?
By naikku
#276279
YEs this sunday there will be a formula.
Go Kimi Go!

Sorry, offtopic..
I have 2gb of ram and I like to use ML also. I´m thinking about upping
to 6gb and buying the XP64. I dont have any idea how much it takes ram.
Anyway, ML rules. The best thing in ML is that you can make an animation of just one rendering.
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By Maximus3D
#276281
If i can make a guess i think one multilight enabled lightsource equals about one full rendered frame as i think it blends between each full frame image when you adjust the multilight sliders up and down.

This can be pretty ram consuming, especially with higher resolution renderings as it needs to have enough free ram for all buffers to be able to blend between them.

This is my guess, but as always i can be completly wrong. :) it happend before.

/ Max
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By polynurb
#276288
..and when you render in coop mode, make sure there is enough ram free for the merging process, as mxcl will not clear the ram untill it is closed or a new task is assigned.
Happened to me once - ML rendered at the edge of 4gb mem usage... rendered fine but crashed during merging. (wonder if SSD disks would help here)
.. but I see Stinkie.. with 16Gb you have some freedom :)
By Stinkie7000
#276298
Yeah, that it does. But it's never enough, is it? ;)

Hmmmm ... guess I'm gonna do some testing.
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By dariolanza
#276385
Yes, Maximus3D is right.
To put ir t simply, an mxi with ML option on stores as many information as the sum of one render per light in you scene, just to allow you to mix them all as you can do in a compositing program.
So, this is a good aproximation to assume that a two lights scene consumes twice the memory as a scene with just one light. It's not exactly this way, but it represents a good aproximation.

Regards

Dario
By Stinkie7000
#276392
Well ... that's basically what I thought/ feared. :)
By wimver
#276410
I can only share my experiences: I brought my 2 gig ram 8core mac to its knees with a 5000 x 5000 image with 3 ml. disabling one light or changing to 4500 x4500 brought the fire back to mxcl.
Will be upping to 4gig soon, that should give me plenty of space to tackle any rendering.

wim
OutDoor Scenery Question

Hi Ed, Without seeing how your model is setup I'd[…]

fixed! thank you - customer support! -Ed