Why 3ds max doesnt use all available memory?

[Cesar]

I'm not an computer expert, in fact, my knowledge very limited, so, maybe someonecan gave some light about this

When i render in 3ds max with vray 1.5, i open the task manager, and in the performance tab, i noticed y the memory info, the blue line never goes up, never pass form the middle, and is even lower than that!! my renders even simple escenes are taking ages to render.

i had 8gb of ram, win 7 64 bits, and when i render, tha task manager shows there is 5gb available!

I tried to modifying the dynamic memory limit, but without any sucess.

I ask because all of this starts to happen since i format my computer weeks ago, before that i always check the task manager, and in renders i used to saw that blue line very high!!

[sanmb]

May be u r using high settings for render.

[Ricardo Eloy]

Out of curiosity, which version of V-Ray are you using?

[Nic H]

chuck in loads of 3d trees and displacement - that will use all your ram and help contribute to crashes.

[Cesar]

Thanks for your replies!

 

I'm using vray sp5

 

After some tries, i increased the image resolution a lot, in this case, starts to use all the memory!

What bothers me, is if i need to made test renders, are taking a lot of time, because doesnt use all the resources available, in some cases, the light cache and irradiance calculation doesn't differs to much from a image with twice the resolution.

 

I read in the chaos group forum something about the bitmap pager, i will try this.

[Stephen Thomas]

It will only use whatever RAM it needs to render the scene. It's not like using more RAM is going to make your renders go faster. It's the CPU cores that handle the rendering, the RAM is just what the CPUs use as part of this process.

 

Sure, if you had too little RAM and it was maxing out, that would create a bottleneck. But it sounds like you have nothing to worry about there. As long as you make sure that you set your dynamic memory limit high enough then everything is fine.

 

Like Nic said, more complex scenes require more RAM than simpler ones. Low RAM usage is good!