Do the precompiled downloads include CUDA?

asked 2013-06-30 01:13:06 -0600

pistorinoj
183 ●2 ●8 ●18

Title says it all.

I downloaded the precompiled OpenCV 2.4.5 for Windows and I am using VS2010 C++ with an NVIDIA GeForce 610M. My project compiles fine and CUDA 5.0 appears in the Project Configurations.

All the non-CUDA aspects of OpenCV appear to be working fine. However, getCudaEnabledDeviceCount always returns zero and if I actually try and load a GpuMat with a Mat, I crash.

I see several discussions about settings to compile OpenCV with CUDA. Before I go down that route, I wonder if anyone knows if CUDA support is already compiled in the downloads or if there is something else I am supposed to be setting?

Thanks for any help.

answered 2013-06-30 05:56:12 -0600

Vladislav Vinogradov

4775 ●4 ●24 ●62

No. Precompiled OpenCV 2.4.5 bineries were built without CUDA support. If you want to use CUDA features you have to build OpenCV from sources.

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Thanks. That adds another step to getting something working so I suggest that the dev team consider adding an option to download precompiled binaries with CUDA support. It might speed up adoption. Thanks again.

pistorinoj ( 2013-06-30 11:34:36 -0600 )edit

Let me edit my earlier response, I re-built the downloads with CMake and WITH_CUDA=ON (which took more than 7 hours on my Windows 7, i3 machine). Now, getCudaEnabledDeviceCount is returning a -1. Any ideas? Thanks

pistorinoj ( 2013-07-01 00:28:58 -0600 )edit

This indicates that the installed NVIDIA CUDA driver is older than the CUDA runtime library. Try to install latest driver.

Vladislav Vinogradov ( 2013-07-01 01:00:57 -0600 )edit

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