The error I get is that my Nvidia Card fails "Cuda Error". This seems to happen after it renders a few times for single frames.

Have an RTX 4080 Super. Vram is at 7 of 16gigs while Houdini is open. Nvidia drivers are at 591.74.

Any suggestions for diagnosis? Is this a common error?

I don't know how to wheel my nvidia drivers back further than 591 as that's all that is available in my app.

we've been recommending people to avoid the 590 range (drivers go up in groups of 5, meaning "590 range" is 590-594.99)

If rolling back to a 580 driver is not an option, try a 595 driver and see how you go

brians
we've been recommending people to avoid the 590 range (drivers go up in groups of 5, meaning "590 range" is 590-594.99)

If rolling back to a 580 driver is not an option, try a 595 driver and see how you go

610 is the current driver train and a new update to it was just released Tuesday. Maybe that one will fair better? The 610 series has been working well so far for me with Blackwell series.

I must say, rolling back to ancient drivers for basic stability is unacceptable and potentially a security risk. There are certain inference models that require the latest drivers so reverting drivers could be a deal breaker for those with mixed use workstations.

Okay, I tried 610 and experienced more stability but had the same problem eventually. I have attempted to render in smaller batches of frames and that seems to help, but it does seem like the more you use Karma, the more it's likely to happen.

Even if I am just using it in the viewport to review what I'm working on with single frames, half resolution, it will eventually trigger.

Requires resetting the computer again.

I am trying 580 now.

For anyone checking this, trying a 580 driver fixed the issue completely.