cuda-memcheck errors from SDK samples - ignore?

Hi,

Optix 6 SDK precompiled samples (most, but did not test all of them) give errors as below when running with cuda-memcheck. Is this desired, known behavior or something wrong? Errors are the same with different driver versions.

C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples>cuda-memcheck optixPathTracer.exe
========= CUDA-MEMCHECK
========= Program hit CUDA_ERROR_INVALID_CONTEXT (error 201) due to "invalid device context" on CUDA API call to cuCtxGetDevice.
=========     Saved host backtrace up to driver entry point at error
=========     Host Frame:C:\WINDOWS\system32\nvcuda.dll (cuMemcpy2DAsync + 0x1ad372) [0x1bbaae]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x8a145) [0xa5c95]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x796a2) [0x951f2]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x8e6964) [0x94cd9b]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x334a10) [0x39ae47]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x341382) [0x3a77b9]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x264ae2) [0x2caf19]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x1ea543) [0x25097a]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\sutil_sdk.dll (sutil::ensureMinimumSize + 0x1c50) [0x20140]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\sutil_sdk.dll (sutil::ensureMinimumSize + 0x14d) [0x1e63d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\sutil_sdk.dll (sutil::createOutputBuffer + 0x64) [0x1c8d4]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x14a4]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x5af6]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0xe9d5]
=========     Host Frame:C:\WINDOWS\System32\KERNEL32.DLL (BaseThreadInitThunk + 0x14) [0x17bd4]
=========     Host Frame:C:\WINDOWS\SYSTEM32\ntdll.dll (RtlUserThreadStart + 0x21) [0x6ce71]
=========
========= Host API memory access error at host access to 0xb01407400 of size 68 bytes
=========     Invalid range on access by cudaMemcopy source.
=========     Saved host backtrace up to driver entry point at error
=========     Host Frame:C:\WINDOWS\system32\nvcuda.dll (cuMemcpy2DAsync + 0x1c2b7a) [0x1d12b6]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x8ac1f) [0xa676f]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x7f56f) [0x9b0bf]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x80687) [0x9c1d7]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x79b49) [0x95699]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x8e7265) [0x94d69c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x7125b8) [0x7789ef]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b40c) [0x901843]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3ea845) [0x450c7c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9bb1) [0x44ffe8]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9a0d) [0x44fe44]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3a0772) [0x406ba9]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39f9f4) [0x405e2b]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39fe41) [0x406278]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89bd8b) [0x9021c2]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b6c5) [0x901afc]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x2722de) [0x2d8715]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x1fbb8f) [0x261fc6]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x4b33]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x647) [0xbb37]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x94b) [0xbe3b]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutSetOption + 0xc6d) [0xd69d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoopEvent + 0xb1) [0xc0a1]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoop + 0x5a) [0xbeea]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x5b1d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0xe9d5]
=========     Host Frame:C:\WINDOWS\System32\KERNEL32.DLL (BaseThreadInitThunk + 0x14) [0x17bd4]
=========     Host Frame:C:\WINDOWS\SYSTEM32\ntdll.dll (RtlUserThreadStart + 0x21) [0x6ce71]
=========
========= Host API memory access error at host access to 0xb01405f00 of size 5444 bytes
=========     Invalid range on access by cudaMemcopy destination.
=========     Saved host backtrace up to driver entry point at error
=========     Host Frame:C:\WINDOWS\system32\nvcuda.dll (cuMemcpy2DAsync + 0x1c2b7a) [0x1d12b6]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0xd5fe2) [0xf1b32]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x8a94e) [0xa649e]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x855ff) [0xa114f]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x806f8) [0x9c248]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x79b49) [0x95699]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x8e7265) [0x94d69c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x7125b8) [0x7789ef]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b40c) [0x901843]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3ea845) [0x450c7c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9bb1) [0x44ffe8]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9a0d) [0x44fe44]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3a0772) [0x406ba9]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39f9f4) [0x405e2b]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39fe41) [0x406278]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89bd8b) [0x9021c2]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b6c5) [0x901afc]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x2722de) [0x2d8715]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x1fbb8f) [0x261fc6]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x4b33]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x647) [0xbb37]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x94b) [0xbe3b]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutSetOption + 0xc6d) [0xd69d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoopEvent + 0xb1) [0xc0a1]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoop + 0x5a) [0xbeea]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x5b1d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0xe9d5]
=========     Host Frame:C:\WINDOWS\System32\KERNEL32.DLL (BaseThreadInitThunk + 0x14) [0x17bd4]
=========     Host Frame:C:\WINDOWS\SYSTEM32\ntdll.dll (RtlUserThreadStart + 0x21) [0x6ce71]
=========
========= Host API memory access error at host access to 0xb01407400 of size 68 bytes
=========     Invalid range on access by cudaMemcopy source.
=========     Saved host backtrace up to driver entry point at error
=========     Host Frame:C:\WINDOWS\system32\nvcuda.dll (cuMemcpy2DAsync + 0x1c2b7a) [0x1d12b6]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x8ac1f) [0xa676f]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x7f56f) [0x9b0bf]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x80687) [0x9c1d7]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x79b49) [0x95699]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x8e7265) [0x94d69c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x7125b8) [0x7789ef]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b40c) [0x901843]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3ea845) [0x450c7c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9bb1) [0x44ffe8]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9a0d) [0x44fe44]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3a0772) [0x406ba9]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39f9f4) [0x405e2b]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39fe41) [0x406278]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89bd8b) [0x9021c2]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b6c5) [0x901afc]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x2722de) [0x2d8715]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x1fbb8f) [0x261fc6]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x4b33]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x647) [0xbb37]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x94b) [0xbe3b]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutSetOption + 0xc6d) [0xd69d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoopEvent + 0xb1) [0xc0a1]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoop + 0x5a) [0xbeea]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x5b1d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0xe9d5]
=========     Host Frame:C:\WINDOWS\System32\KERNEL32.DLL (BaseThreadInitThunk + 0x14) [0x17bd4]
=========     Host Frame:C:\WINDOWS\SYSTEM32\ntdll.dll (RtlUserThreadStart + 0x21) [0x6ce71]
=========
========= Host API memory access error at host access to 0xb01405f00 of size 5444 bytes
=========     Invalid range on access by cudaMemcopy destination.
=========     Saved host backtrace up to driver entry point at error
=========     Host Frame:C:\WINDOWS\system32\nvcuda.dll (cuMemcpy2DAsync + 0x1c2b7a) [0x1d12b6]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0xd5fe2) [0xf1b32]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x8a94e) [0xa649e]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x855ff) [0xa114f]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x806f8) [0x9c248]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvrtum64.dll (rtcGetExportTable + 0x79b49) [0x95699]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x8e7265) [0x94d69c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x7125b8) [0x7789ef]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b40c) [0x901843]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3ea845) [0x450c7c]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9bb1) [0x44ffe8]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3e9a0d) [0x44fe44]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x3a0772) [0x406ba9]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39f9f4) [0x405e2b]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x39fe41) [0x406278]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89bd8b) [0x9021c2]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x89b6c5) [0x901afc]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x2722de) [0x2d8715]
=========     Host Frame:C:\WINDOWS\System32\DriverStore\FileRepository\nvdmi.inf_amd64_ef0b382f4c9f893c\nvoptix.dll (rtGetSymbolTable + 0x1fbb8f) [0x261fc6]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x4b33]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x647) [0xbb37]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutForceJoystickFunc + 0x94b) [0xbe3b]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutSetOption + 0xc6d) [0xd69d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoopEvent + 0xb1) [0xc0a1]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\freeglut.dll (glutMainLoop + 0x5a) [0xbeea]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0x5b1d]
=========     Host Frame:C:\ProgramData\NVIDIA Corporation\OptiX SDK 6.0.0\SDK-precompiled-samples\optixPathTracer.exe [0xe9d5]
=========     Host Frame:C:\WINDOWS\System32\KERNEL32.DLL (BaseThreadInitThunk + 0x14) [0x17bd4]
=========     Host Frame:C:\WINDOWS\SYSTEM32\ntdll.dll (RtlUserThreadStart + 0x21) [0x6ce71]

And this continues…

Just to add - except these errors samples are running OK. I get thesame error when creating byte4 buffer in my code.

Thanks!
Robert

You can ignore them. cuda-memcheck will not work with OptiX programs.
OptiX uses some code constructs cuda-memcheck detects as memory access errors, but they aren’t.

OK, thanks!