GPU threads count from Opencv GPU module

asked 2014-06-17 03:58:47 -0600

Tariq
41 ●4

How can I determine GPU resource usage from OpenCV GPU module and especially the number of threads used during my program execution?

I am using Tesla K20C for executing my experiments and using GPUTech-Z utility to monitor resource usage.. During the program execution, my GPU is 15-20% loaded and it is consuming about 4% of GPU memory

I tried using Nsight Visual Studio edition, however, it shows only calls to opencv_gpu246d.dll and not to individual CUDA function calls from the library.

answered 2014-07-01 03:41:38 -0600

Mathieu Barnachon

4678 ●18 ●53 http://www.math-barnac...

updated 2014-07-01 05:42:31 -0600

To monitor the GPU module, when you are using CUDA, have a look at the NVIDIA Visual Profiler. NVIDIA has a blog, where you could learn how to use the visual profiler (here).

[Edit] Use the flag '-lineinfo' for nvcc to help profiling with line number.

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Thanks for your answers Mathieu. Visual profiler was not helpful with OpenCV GPU module, as this module is already built and included as library in my application. I have no access to CUDA code while executing my application using OpenCV GPU module functions.

Tariq ( 2014-07-01 04:07:37 -0600 )edit

Strange, in mine, I can see all the kernel launched. Did you try to compile yourself the library?

Mathieu Barnachon ( 2014-07-01 04:10:41 -0600 )edit

Yes, I compiled the library with CUDA support by myself. Is there any special setting in your visual studio project for enabling the display of kernel launches in Visual profiler?

Tariq ( 2014-07-01 05:01:48 -0600 )edit

I can specify NVCC profiler options with CUDA files, with .cu extension, in my project. I don't have any CUDA files in my OpenCV based project. Where shall I specify the NVCC compiler flagfs in this case?

Tariq ( 2014-07-08 06:15:17 -0600 )edit

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