Hi,
I am trying to integrate OpenCV CUDA Stereo block matching for ROS.
The code works well on laptop (Device 0: “Quadro K2100M” 2000Mb, sm_30, 576 cores, Driver/Runtime ver.9.10/9.10) but when trying to run on TX2 (Device 0: “NVIDIA Tegra X2” 7854Mb, sm_62, Driver/Runtime ver.9.0/9.0) I will get error:
OpenCV Error: Gpu API call (operation not supported) in registerPageLocked, file /data/git/opencv/modules/core/src/cuda_host_mem.cpp, line 323
terminate called after throwing an instance of 'cv::Exception'
what(): /data/git/opencv/modules/core/src/cuda_host_mem.cpp:323: error: (-217) operation not supported in function registerPageLocked
I freshly flashed the TX2 with Jetpack 3.2, the CUDA 9.0 come from Jetpack. I got the same error with Jetpack 3.1 and CUDA 8.0.
The registerPageLocked looks like this:
void cv::cuda::registerPageLocked(Mat& m)
{
#ifndef HAVE_CUDA
(void) m;
throw_no_cuda();
#else
CV_Assert( m.isContinuous() );
cudaSafeCall( cudaHostRegister(m.data, m.step * m.rows, cudaHostRegisterPortable) );
#endif
}
Looking at the API DOC: http://docs.nvidia.com/cuda/cuda-runtime-api/group__CUDART__MEMORY.html#group__CUDART__MEMORY_1ge8d5c17670f16ac4fc8fcb4181cb490c
I assume the error returned from cudaHostRegister is cudaErrorNotSupported.
The API mention one thing re support:
cudaHostRegister is not supported on non I/O coherent devices.
Is my analysis above correct?
Does the TX2 support cudaHostRegister function ?
If not then what are the alternatives?
I am trying to use OpenCV streams.
Any advice greatly appreciated!
P.S. This was orginally posted on cuda forum but I have been advised TX2 may be better.
https://devtalk.nvidia.com/default/topic/1032205/cudaerrornotsupported-when-calling-cv-cuda-cudahostregister-on-nvidia-tx2/