No CUDA devices found

[User]

Hi,
I downloaded trial version of Zephyr Lite v. 4.302 and I get notification on startup: "No compatible Cuda video cards has been found. ...". I updated drivers and reset laptop and still in options under tab Cuda it says: "No CUDA devices found on this system".
In user manual for this version of program (4.3) is written:

Minimum System Requirements:
OS: Windows 10/8.1/8/7/Vista (64 bit)
Processor: Dual Core 2.0GHz or equivalent processor
Memory: 16GB System RAM
Hard Disk Space: 10GB free HDD Space
Video Card: Direct X 9.0c compliant NVIDIA video card with at least 1GB of RAM

Recommended System Requirements:
OS: Windows 10/8.1/8/7/Vista 64 bit
Processor: Quad-core Intel or AMD CPU
Memory: 32GB System RAM
Hard Disk: 20GB free HDD Space - SSD drive
Video Card: Direct X 9.0c compliant NVIDIA video card with at least 2GB of RAM and CUDA capabilities >= 3.0

I have laptop ThinkPad T560 with Nvidia GeForce 940mx. That video card has CUDA capabilities 5.0, I think.
What am I missing?

[Roberto]

Hi User,

I confirm that your video card should be supported. I suggest double checking your drivers. Please use the official drivers from the Nvidia website and not the Microsoft ones.
You can find the Nvidia drivers here:

https://www.nvidia.com/Download/index.aspx

I suggest making a clean install. After installing the drivers, you can check if they are correctly installed also by reading the Zephyr's log at startup.
You can look for this string: GL_VERSION = 4.6.0 NVIDIA XXX.XX where XXX.XX is the version of the drivers currently installed.

[User]

Ok, I downloaded driver from Nvidia's site and it works now. Thank you!

I have one more concern related to GPU. When I create dense point cloud or mesh, even when all processing is done and I don't move or touch anything my GPU load is above 90%. Even if I minimize the program to taskbar, GPU is above 90% and won't reduce. Are there any settings that could affect this? It might be completely normal but it's strange to me.

[Andrea Alessi]

Hi User,

i don't think a GPU load that big is normal after processing, unless you're rendering something *extremely* big. Can you share a log, eventually ?

[nono_sax]

hello,
I have the same problem: No CUDA device found
in the log, I have: GL_VERSION = 4.6.0.0
can you help me please ?

[nono_sax]

for information, my notebook is a VAIO VPCF21Z1E, whit a card Geforce GT 540M

[robrad4d]

Hi - I have the same issue as well. Nvidia Geforce GTX 580. I've downloaded the latest drivers from Nvidia + have uninstalled, then re-installed 3DF Zephyr Free 4.507. I also installed the latest CUDA toolkit 10.1 today.

Log is attached. It is recognizing the card but still not recognizing any CUDA devices. Appreciate your help!

[Andrea Alessi]

Hi,

unfortunately the GTX 5xx only have CUDA capabilities 2.0 / 2.1 ( https://en.wikipedia.org/wiki/CUDA ) while Zephyr requires >= 3.0 in order to provide GPU acceleration .

Unfortunately, you will need to use Zephyr in CPU only or upgrade your system to a newer card.

Sorry!

[nono_sax]

thank you for your response; I am desapointed !