Cuda Not Recognized on GTX 970

[CommanderPaladin]

Hello everyone.
I need a bit of help with a problem I have never encounter and try to solve.

I'm on a fresh Windows machine, I installed everything on including the drivers but I have a problem.
The machine has 2 GPUs - GTX 1070 and GTX 970 Phantom. In the past everything worked fine with those two, but now, I cannot enable the CUDA on the GTX 970. I have searched the internet, even installed the Cuda Toolkit 11.7.0 and still no results. I really need my second graphics card to help me do things in Blender and others applications, but I'm unable to find a solution to this issue.

Thanks you so much in advance for any help and tips on this issue.

 

[xtreemchaos]

have you restarted the pc ? because my 2080 dont have the raytracing tick after updating the drivers untill i reboot.

 

[CommanderPaladin]

have you restarted the pc ? because my 2080 dont have the raytracing tick after updating the drivers untill i reboot.

Yes kind sir. I did reboot. Same result.
Also in the NVIDIA Control Panel, they are both enabled for CUDA.
Here are the results for the GTX 1070 maybe it helps.

Here eveything is enabled unlike the 970

 

[xtreemchaos]

have you tryed the card on a benchmark as could be a bug with GPUz.

 

[newtekie1]

In my experience, the Cuda detection in GPU-Z has been unreliable. W1z has worked on it a lot I know, but nVidia doesn't make it easy from my understanding.

 

[CommanderPaladin]

have you tryed the card on a benchmark as could be a bug with GPUz.

No, I haven't yet. Any suggestion on what software should I use?

Also other softwares like Blender or Zephyr 3D don't see Cuda enabled on the 970.

 

[ThrashZone]

Hi,
Try an older or ROG version instead see what it shows.

 

[xtreemchaos]

download Heaven its free, your shaders are showing up in gpuz so if it runs fine in the benchmark you should be ok. i use the ROG one.

 

[StefanM]

What does it read if you remove the Pascal GPU or disable it in device manager?

The GTX 970 alone works with R515 drivers: https://opencl.gpuinfo.org/listreports.php?devicename=NVIDIA+GeForce+GTX+970&platform=

 

[ThrashZone]

Hi,
Yep
If I switch to cpu to handling physX it's unchecked in gpu-z
So maybe the above applies seeing you're using two different cards.

 

[StefanM]

since when did pascal get ray tracing?

"On Pascal-architecture GPUs, we see that ray tracing and all other graphics rendering tasks are handled by FP32 Pascal shader cores."
Source: https://www.nvidia.com/en-us/geforce/news/geforce-gtx-dxr-ray-tracing-available-now/

 

[looniam]

"On Pascal-architecture GPUs, we see that ray tracing and all other graphics rendering tasks are handled by FP32 Pascal shader cores."
Source: https://www.nvidia.com/en-us/geforce/news/geforce-gtx-dxr-ray-tracing-available-now/

oh you caught me before i had my coffee.

guess my ninja deletion skillZ needs w0rk.

 

[mstenholm]

WGC OPNG learned a few people that the old GPUs, my 970’s as well, needed the older drivers to run OpenCL. Maybe Cuda is the same. So try what @ThrashZone suggested. I saw the table above but try a 450-470.

 

[W1zzard]

In my experience, the Cuda detection in GPU-Z has been unreliable.

First time I hear about that, do you have any additional details?

but now, I cannot enable the CUDA on the GTX 970

Have you checked whether you can actually run CUDA programs?

 

[CommanderPaladin]

I did the benchmark, everything was all right but during the night especially there were some tiny lag spikes.

I tried older ROG versions, I tried older drivers versions and nothing worked....

Have you checked whether you can actually run CUDA programs?

Yes


(Here is the benchmark file in the .txt format because it would not allow me to upload .html)

 

[StefanM]

Unigine Heaven is no compute benchmark.

Try CompuBench where you can select individual devices.

 

[CommanderPaladin]

Unigine Heaven is no compute benchmark.

Try CompuBench where you can select individual devices.

It doesn't even let me select the GTX 970

 

[ThrashZone]

Hi,
Remove the 1070.
Install 970 in pci-e slot 1

 

[newtekie1]

First time I hear about that, do you have any additional details?

Not really other than it happens about every 1 out of ~20 times I open GPU-Z on my computer CUDA is unchecked. I always assumed I wasn't the only one. It wasn't a major issue for me. I can close GPU-Z and re-open it and the box is checked. And I know the GPU can run CUDA, so I never care that the box is unchecked.

 

[CommanderPaladin]

Hi,
Remove the 1070.
Install 970 in pci-e slot 1

It worked! How? What the heck. After I moved it there, I started up my PC, it installed a driver and now it has CUDA. After I switched them back, everything was good. But how.

Thanks you all for all the help and time. I really do appreciate. Whowa. Didn't expected such help from here. Great community.

Nevermind. After a few minutes, everything went black. After a restart, everything went back the old broken way (Cuda not enabled on 970). I don't understand anymore...

 

[ThrashZone]

Hi,
Are you using a sli bridge ?

 

[CommanderPaladin]

Hi,
Are you using a sli bridge ?

No.

 

[ThrashZone]

Hi,
Maybe your board is getting confused without one
I've never used two cards independently on the same system or sli so I don't really know.

 

[CommanderPaladin]

It worked! How? What the heck. After I moved it there, I started up my PC, it installed a driver and now it has CUDA. After I switched them back, everything was good. But how.

Thanks you all for all the help and time. I really do appreciate. Whowa. Didn't expected such help from here. Great community.

Nevermind. After a few minutes, everything went black. After a restart, everything went back the old broken way (Cuda not enabled on 970). I don't understand anymore...

It looks like the Windows or a software automatically updated the drivers of my GPU-s.

Hi,
Maybe your board is getting confused without one
I've never used two cards independently on the same system or sli so I don't really know.

It worked fine until last week when I reinstalled the Windows hmmm

I found something. If I disable both video cards in the Device Manager then enabling only the 970, it will have CUDA active. When I enable the GTX 1070, it disables the CUDA on the 970

 

[W1zzard]

I found something. If I disable both video cards in the Device Manager then enabling only the 970, it will have CUDA active. When I enable the GTX 1070, it disables the CUDA on the 970

This sounds like a bug with CUDA / NVIDIA drivers. Open a ticket on their site, maybe they can fix this in a future driver