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Fortran 90 2D Vectorized Fast Fourier Transform

Using a simple array as input, a 2-dimensional Fast Fourier Transform consists of two one-dimensional FFTs performed (for instance) on each line first, and on each column next. An important limitation in FFT computer applications dealing with large arrays is the fact that the algorithm is not well suited to parallelization, due to the huge amount of data that has to be transfered between computers. Since the transfers are proportional to the number of operations, network time soon becomes prominent when the number of processors is high. This program uses vectorization as an alternative to parallelization methods.



Verified by

Verified on


Verified by

Ted Teah

Verified on

23 August 2006

Leaders and contributors

Nicolas Riesz Maintainer
Paul Swarztrauber Contributor

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,Help,

Software prerequisites

Required to useOFFT


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