27 ms·

The non-GPL version uses Intel's proprietary Math Kernel Library (MKL) for FFTs, linear algebra, etc.

• jordigh 9y ago
  Huh, so did MKL just reimplement FFTW? I see that they have an interface for it. Or maybe they bought a GPL exception to FFTW.
  • ihnorton 9y ago
    They expose an FFTW-compatible API, but as far as I know it's an independent implementation.
    • deleted 9y ago
      [deleted]