progressivePhotonMap: OptiX Error: Unknown error (Details: Function "_rtContextCompile" ca

Gaming and Visualization Technologies Visualization OptiX
1

Hi all, I am new to Optix.
I have successfully build everything, and would like to try out the progressivePhotonMap example.
The downloaded pre-complied executable runs fine;
however, the one I build by myself give the following error:

OptiX Error: Unknown error (Details: Function “_rtContextCompile” caught excepti
on: Inconsistent device bitness detected with given input PTX: traverse_geometry
_3, [1573417])

Anyone have any ideas on what is wrong from my build or setting?
Thanks so much in advance if you might help.

-William

2

Hi, that error usually happens when you’re trying to use 32-bit PTXes with a 64-bit OptiX program. Please check your PTX and OptiX application bitness in order for them to match.

3

Hi marknv,
Thanks for your reply; however, I am still confused by some points.

  1. How are the PTX generated? by CMake?
  2. In CMake, I have already clicked the checkbox for CUDA_64_BIT_DEVICE_CODE
    Is it not enough for building a 64-bit project?
  3. I double checked the CUDA 5.5 is running on 64-bit as well as Optix is under “Program File” rather than “Program File (x86)” in Windows 8, what else do I needa check? Cg matters?

Thanks in advance for your kindly answer.

-William

4

See the OptiX 3.0.1 release notes: http://developer.download.nvidia.com/assets/tools/files/optix/3.0.1/NVIDIA-OptiX-SDK-3.0.1-OptiX_Release_Notes.pdf

“Note that CUDA 5.5 is not supported in this release.”