CUDA_ERROR_INVALID_PTX
Posted: Mon Jul 27, 2020 9:33 am
When attempting to use LuxCore 2.4 CUDA rendering, it produced the error "CUDA_ERROR_INVALID_PTX: a PTX JIT compilation failed" I received this error while using NVIDIA Quadro driver version 392.58, which although not the "biggest number" driver, it is worth noting that this is a current driver, and was released as part of the NVIDIA Quadro 390 driver branch on June 24, 2020.
This driver, according to the release notes, includes CUDA 9.1, which is perhaps not supported by LuxCore 2.4 Upon switching to a driver from the 418 branch which includes CUDA 10.1, this issue was resolved. This error can be resolved by switching to a different Quadro driver branch, however, I could not find a CUDA requirement listed on the LuxCore page or the 2.4 release notes. Both drivers were tested on a clean installation of Windows with Blender 2.83. If this is a requirement, it may be helpful to add it to the website (unless it is already listed and I just cannot find it).
Here are the release notes for the two driver versions:
http://us.download.nvidia.com/Windows/Q ... -notes.pdf
http://us.download.nvidia.com/Windows/Q ... -notes.pdf
This driver, according to the release notes, includes CUDA 9.1, which is perhaps not supported by LuxCore 2.4 Upon switching to a driver from the 418 branch which includes CUDA 10.1, this issue was resolved. This error can be resolved by switching to a different Quadro driver branch, however, I could not find a CUDA requirement listed on the LuxCore page or the 2.4 release notes. Both drivers were tested on a clean installation of Windows with Blender 2.83. If this is a requirement, it may be helpful to add it to the website (unless it is already listed and I just cannot find it).
Here are the release notes for the two driver versions:
http://us.download.nvidia.com/Windows/Q ... -notes.pdf
http://us.download.nvidia.com/Windows/Q ... -notes.pdf