CUDA exceptions in OpenCV GPU module in multi-threaded version (Bug #3738)

Added by T Abdullah almost 11 years ago. Updated over 9 years ago.

Status:	Open	Start date:	2014-06-04
Priority:	Normal	Due date:
Assignee:	Vladislav Vinogradov	% Done:	0%
Category:	gpu (cuda)
Target version:	-
Affected version:	2.4.0 - 2.4.8	Operating System:	Windows
Difficulty:		HW Platform:	x64
Pull request:

Description

Hi,
Dear all,

I am trying to run a multi-threaded application using OpenCV GPU module. The application is developed in Visual Studio 2012 professionl + CUDA 5.5 + OpenCV 2.4.6 and uses pthreads for multi-threading. I built OpenCV 2.4.6 for this environment.

My application executes with two threads and there are no exceptions. I start getting a number of CUDA related exceptions with 3 or more that three threads. Single application of multiple application instances. It does not matter
am observing the same behavior.

OpenCV Error: Gpu API call (NCV Assertion Failed: cudaError_t=4, file=C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1306) in unknown function, file C:\opencv-2.4.6\modules\gpu\src\cascadeclassifier.cpp, line 173

OpenCV Error: Gpu API call (unspecified launch failure) in unknown function, file C:\opencv-2.4.6\modules\core\src\gpumat.cpp, line 1196

OpenCV Error: Gpu API call (NCV Assertion Failed: cudaError_t=4, file=C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1523) in unknown function, file C:\opencv-2.4.6\modules\gpu\src\cascadeclassifier.cpp, line 173

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

OpenCV Error: Gpu API call (NCV Assertion Failed: retcode=2, file=C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1768) in unknown function, file C:\opencv-2.4.6\modules\gpu\src\cascadeclassifier.cpp, line 173

OpenCV Error: Gpu API call (NCV Assertion Failed: retcode=5, file=C:/opencv-2.4.6/modules/gpu/src/nvidia/NCVHaarObjectDetection.cu, line=1575) in unknown function, file C:\opencv-2.4.6\modules\gpu\src\cascadeclassifier.cpp, line 173

I can provide more details if needed.

I would also welcome any alternate suggestions for solving these exceptions as requested by me in this thread. [http://answers.opencv.org/question/34578/best-practices-for-opencv-gpu-module-in-multi/]