PutLutData error - crashing Cortex

cortex bug
1

I am reluctant to call this a “bug” but wanted to report it.

One of our operators was reporting that Cortex was crashing. I pulled the log and started looking through it. There’s two errors that caught my attention:

Cortex//PutLutData(0): Cortex unhandled exception: GpuProc.ManagedApi Not Open

This error appears a few times, about the time the operator was working.

The other error is

Cortex//InvokeHandlersImpl(0): Exception killing CohogRender (8604): Access is denied

I looked in the CohogRender log at the same time and didn’t see anything like an error. Everything else in the logs looks rather innocuous. Any hints at these errors?

2

Crashes are usually caused by “unhandled exceptions” so that first error looks like the issue, but I’m not sure what would cause that.

Which build is this? Is this on a newly configured system or one you’ve been using for a long time?

What was the operator doing at that time?

(Of course if you can determine steps to reproduce the issue that’s always helpful)

3

Sorry - I guess the version might come in handy. :wink: Version 1.5.2 b4891. We’ve been using this system with 1.4.4 for the longest time, recently switched to 1.5.2 a week or two ago.

The operator isn’t exactly tech savvy nor descriptive. All I got was that he was logging, adding clips to a reel, then crash. I did see Cortex taking extremely long to switch from clip to clip while there was background processing. Not a crash per se, but might be related to the crash.

4

OK, well let’s keep an eye on it.

If the issue is recurring, perhaps we can piece together a few more details from the user’s stories and take a look at the full logs to see if there is any more context.