EXTREME HELP NEEDED!! PLEASE!! CPU/Vray 2.0 low performance!

GaboM5

Hi Everybody!

I'm having a recent problem with Vray 2.0, it started yesterday noon, I was doing some renderings from a scene, everything was normal, output size 1920 x 1080, but then, my last render got idle at 20% in the Vray progress window, I got off from work, though was something normal and let the computer to work all night long. 6 hrs later remotely checked how the render was doing but was still at 20%, I closed it, switch to 1280 x 720 and started again. When I checked back in the morning the render was at 5% and stayed there for another 3 hours and had no signs of getting any progress soon. I always have the Windows task manager open to see how the CPU and memory are performing.

Here are my Computer and VisOpt specs:

SketchUp 2015 64 bits / Vray 2.0
Windows 7 Professional
i7 2600 3.40GHz
16 Gb Ram
250 SSD
Nvidia GeForce GT 730

This problem its happening with the Vray default options, its not even a High quality render, I only changed the system parameters to: Dynamic Memory Limit 10240 / Render Region Division X: 64, Y: 64.
VisMats subDs are all up to 24, not more, No displacement in the render, Bumps are at 0.5
Lights SubDs are all up to 16.

CPU and Memory, on the task manager are always 100% and around 12 and 14 Gb, respectively. But the CPU works at 100% for around 5 min, and the drops back to 10-15% and stays there an average of 1 hour, then stars working again. The memory its always around 12 and 14 Gb of usage. I have no idea why the CPU its performing like that, when it was always all the time at 100% when working on a render.

Now, another issue here is that I have NO CLUE on whether my computer its using the GPU power or not.
I know that the RTEngine option should be at RT GPU CUDA, but I honestly haven't seen any difference between RT GPU CUDA or RT CPU.

I really appreciate any help you can provide me. I really need to get this problem solved soon. My ass is on the line with this renders haha.

Thanks!

andybot

If you are trying to use RT with GPU, don't. It is not fully functional. If you need RT, use the CPU mode.
If you are doing regular render, at what point in the render does it get stuck? Light Cache? Some more details would help.

GaboM5

@andybot said:

If you are trying to use RT with GPU, don't. It is not fully functional. If you need RT, use the CPU mode.
If you are doing regular render, at what point in the render does it get stuck? Light Cache? Some more details would help.

Hi, it only happens when its rendering the image, just when the last phase of Irrandiance Map has finished and it starts to render the image.

I'm doing a regular render, is there a way to use the GPU power to speed up the render time? Or you just recommend to use CPU to render?

andybot

that's weird, not sure what it could be. Did you try contacting support? Are you on any kind of network? If wireless - there may be some connection problems.

Sorry no, GPU can't be used to help speed up the render. Only thing that can help speed things up with vfs 2.0 is distributed rendering on multiple machines.