A single threaded, not vectorized for loop in c++ runs faster than calling BLAS from Python with Numpy though. The Python glue makes everything slow. For exampl

A single threaded, not vectorized for loop in c++ runs faster than calling BLAS from Python with Numpy though. The Python glue makes everything slow. For example if you read out the camera in Python using OpenCV you'll get a way lower framerate than if you do the same from c++, even if in both cases you use OpenCV which is c++.