Segmentation Fault in Nvbit::compute_max_stack_size about nvbit HOT 5 CLOSED

We need a little bit more information to try to see what is going on.
Which GPU is it? Is there a way you can point us to the exact same version of the application?
Thanks,

from nvbit.

Thanks for responding so quickly. This is with an RTX2080Ti, SM7.5.

The application is pbrtv4 from the latest master (ea9e5fdef6), which is available here on github and is pretty easy to build. All you to build is OPTIX and it uses cmake. It's a ray-tracer that's been adapted from CPU-code, so some of the kernels look a bit nasty.

I was able to isolate a specific set of kernels as the issue. When you comment out the contents of EvaluateMaterialAndBSDF specified in src/pbrt/gpu/surfscatter.cpp (https://github.com/mmp/pbrt-v4/blob/master/src/pbrt/gpu/surfscatter.cpp), the problem is eliminated and I'm able to instrument the application as expected. So it seems related to the lambda specified by that function. I can try and come up with a smaller self-contained example if this isn't enough to go on.

from nvbit.

I was able to reproduce on my side and I will try to work on it this week.
Thanks for pointing this out!

from nvbit.

The issue should be resolved in NVBit version 1.5 (just released). Please let us know if it works for you.
Thanks again for reporting.

from nvbit.

Forgot to comment, but this worked perfectly. Thanks so much for your effort on it.

from nvbit.