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OpenCV with CUDA: Large opencv_gpu246.dll file

asked 2013-10-01 09:47:42 -0600

toni gravatar image

updated 2017-06-28 06:19:32 -0600


I am trying to compile OpenCV 2.4.6 with CUDA. The compilation passed fine, however I got very large opencv_gpu246.dll output file (around 300 MB). I left options regarding GPU architectures unchanged in Cmake GUI, i.e.:

CUDA_ARCH_BIN 1.1 1.2 1.3 2.0 2.1(2.0) 3.0, CUDA_ARCH_PTX 2.0

Even if I try to compile for only one architecture, e.g.:


I get quite a large file (around 60 MB).

When I compare these sizes to pre-built dll which ships with OpenCV (less than 1MB), the difference is huge. Has anyone observed the same behavior and what may be the problem?

Thanks in advance!

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answered 2013-10-01 12:33:27 -0600

Vladislav Vinogradov gravatar image

The pre-built OpenCV package was compiled without CUDA, so gpu module from them is just a fake (all functions throw exception). 60 MB is a real size of gpu module for one architecture.

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Thanks, that makes a lot of sense.

toni gravatar imagetoni ( 2013-10-02 01:41:00 -0600 )edit

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Asked: 2013-10-01 09:47:42 -0600

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Last updated: Jun 28 '17