Crash is CUDA code (Bug #3807)

I am doing object detection from video stream usig cascadeclassifer_gpu.detectmultiscale function. There are no crashes with one thread.

When I try to run multiple processing threads on GPU from the CPU. I have the following crashs in my program.

//-----------------------------------------------------------------------------------

OpenCV Error: Gpu API call (NCV Assertion Failed: cudaError_t=30, file=C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1206) in unknown function, file C:\opencv-2.4.6\modules\gpu\src\cascadeclassifier.cpp, line 173

*ERROR Line from OpenCV code: * static void NCVDebugOutputHandler(const std::string &msg) { CV_Error(CV_GpuApiCallError, msg.c_str()); }

//-----------------------------------------------------------------------------------

Error Code: -217

Error Description: C:\Users\Abdullah\Downloads\opencv-2.4.6\modules\gpu\src\casc adeclassifier.cpp:173: error: (-217) NCV Assertion Failed: cudaError_t=30, file= C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1206

ERROR Line from OpenCV code: ncvAssertCUDAReturn(cudaStreamSynchronize(cuStream), NCV_CUDA_ERROR);

//-----------------------------------------------------------------------------------

Error DescrOpenCV Error: Gpu API call (unknown error) in unknown function, file C:\opencv-2.4.6\modules\core\src\gpumat.cpp, line 1415

ERROR Function from OpenCV code: *
void mallocPitch(void* devPtr, size_t* step, size_t width, size_t height) const {
cudaSafeCall( cudaMallocPitch(devPtr, step, width, height) );
}

//-----------------------------------------------------------------------------------

I ma using Windows/PThreads to spawn multiple-threads on the GPU. Each thread is independent of the others. It is processing a separate video file and loads its own cascadeclassifier.

I am facing these issues for last 3 months and could not find a solution for it. Could any body from development team help me out for these crashes?

I have asked these crashing issues at OpenCV answers forum and did not get a reply.

All of the reported crashes occur when I try to run multiple processing threads on GPU from the CPU.I use Windows/PThreads to spawn multiple-threads on the GPU. Each thread is independent of the others. It is processing a separate video file and loads its own cascadeclassifier. It will be nice to have answer of all or some of these questions:

1) http://answers.opencv.org/question/36913/occasional-crash-in/
2) http://answers.opencv.org/question/36602/multi-threading-support-in-opencv-gpu-module/
3) http://answers.opencv.org/question/36601/cascadeclassifier_gpu-with-cvgpustream/
4) http://answers.opencv.org/question/35170/gpu-threads-count-from-opencv-gpu-module/
5) http://answers.opencv.org/question/35943/gpu-real-time-monitoring-in-windows-7/
6) http://answers.opencv.org/question/34949/debug-cuda-code-from-opencv/
7) http://answers.opencv.org/question/34609/profiling-multi-threaded-opencv-gpu-module/
8) http://answers.opencv.org/question/34383/cuda-streams-in-opencv/
9) http://answers.opencv.org/question/34576/opencv-gpu-module-exceptions-from-its-cuda/
10) http://answers.opencv.org/question/34572/cudaerrorcudartunloading-in-opencv-gpu-module/

Regards,
Tariq Abdullah

P.S: Setting priority as Blocker since above issue is not blocking my further development progress.