Hi guys, I'm very new with this software and in general with any kind of rendering one. I have just downloaded and installed demo version just to understand how fast Octane can run on my laptop, what i don't understand is because the gpu memory used is only a small percentage of the GPU memory available (considering that i haven't got any kind of other software working). My laptop is
Dell Precision M660
Intel Core i7-2760QM CPU 2.4GHz
RAM 12GB
NVIDIA 3000M with 240 CUDA cores and 2GB memory
Maybe it's a stupid question but before to buy Octane as first i should need to test how my system perform...is it not possible to increase the GPU memory to beused? Thanks for your help!!!
GPU memory limitation
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The memory used is dependant on the complexity of the scene - geometry, textures and render image size.
The speed of rendering is down to the number of cuda cores available in your gpu(s). You don't want to use any more vram than you have to. The number of cores you have to apply to the rendering calcs is what you should concern yourself with in regard of getting the best performance out of Octane and your PC.
That small demo scene you are rendering there doesnt occupy much vram. That's good. 2gb is a useful data/work space to have though for say 6 million polys and some textures. It depends on what you want to render but I would say 2gb is a handy baseline and you should go with 3 or 4 gb if you are heavily into archviz stuff.
While it will run OK on your laptop it wont be too much of a performer with 240 cores, something similar to a GTS450, GT545 or GT640, and as it is doing double duty displaying and rendering it won't be especially responsive to scene navigation. I think most people who want to make serious/frequent use of Octane would go for a desktop with perhaps a couple of 660ti/670/680 or a 690 and a basic card dedicated to the display. Either that or perhaps you could get an expander box with a couple of decent gpu to run from your laptop but those boxes aren't cheap/cost effective.
Heavy duty users build their own renderstations with up to 8 gpu. These might be in the order of 30 x faster than your laptop and crank out renders in a few minutes.
Your 12gb system ram is about right for loading a 2gb vram card however.
HTH
The speed of rendering is down to the number of cuda cores available in your gpu(s). You don't want to use any more vram than you have to. The number of cores you have to apply to the rendering calcs is what you should concern yourself with in regard of getting the best performance out of Octane and your PC.
That small demo scene you are rendering there doesnt occupy much vram. That's good. 2gb is a useful data/work space to have though for say 6 million polys and some textures. It depends on what you want to render but I would say 2gb is a handy baseline and you should go with 3 or 4 gb if you are heavily into archviz stuff.
While it will run OK on your laptop it wont be too much of a performer with 240 cores, something similar to a GTS450, GT545 or GT640, and as it is doing double duty displaying and rendering it won't be especially responsive to scene navigation. I think most people who want to make serious/frequent use of Octane would go for a desktop with perhaps a couple of 660ti/670/680 or a 690 and a basic card dedicated to the display. Either that or perhaps you could get an expander box with a couple of decent gpu to run from your laptop but those boxes aren't cheap/cost effective.
Heavy duty users build their own renderstations with up to 8 gpu. These might be in the order of 30 x faster than your laptop and crank out renders in a few minutes.
Your 12gb system ram is about right for loading a 2gb vram card however.
HTH
i7-3820 @4.3Ghz | 24gb | Win7pro-64
GTS 250 display + 2 x GTX 780 cuda| driver 331.65
Octane v1.55
GTS 250 display + 2 x GTX 780 cuda| driver 331.65
Octane v1.55