OptiX runtime fails to load on NVIDIA driver 591.74 (works after rollback to 581.57)

[Eamarvac]

Greetings,

First of all, thank you for creating Accelerad! I found the project a year ago and tested it with some work simulations and it worked great. Now i've tried to use it again but I've found that executing the demos resulted in this error:

accelerad_rpict: internal - Error reading OptiX library. Update your graphics driver.
accelerad_rpict: 0 rays, 0.00% after 0.0006 hours
Accelerad rpict failed

After digging around for solutions, I've found this nvidia forum post that explains that OptiX 6.0.0 is no longer supported at the 590 branch driver.

I've downgraded from the driver 591.74 to 581.57 and, indeed, Accelerad works now.

I guess there's no plans to upgrade Accelerad to newer versions of OptiX given how the last version was released in 2019, so I wanted to create this issue in case others have the same problem I had.

[nljones]

Hi @Eamarvac,

The day was bound to come eventually. The architecture of OptiX 7 differs quite a bit from OptiX 6, so it's not trivial to add this compatibility to Accelerad and isn't likely to happen any time soon.