Conventional DFT Functions

The interfaces of the cluster MKL DFT functions are very similar to the corresponding interfaces of conventional MKL DFT Functions. The cluster Discrete Fourier Transform function library of Intel MKL provides one-dimensional, two-dimensional, and multi-dimensional (up to the order of 7) routines and both Fortran- and C-interfaces for all transform functions.There are the same four main categories of Cluster DFTI functions as the categories for conventional DFTI functions:

• Descriptor Manipulation
• DFT Computation
• Descriptor Configuration
• Status Checking

For compatibility with previous versions of the library, Intel MKL continues to support the older FFT interface but users of this older code are encouraged to migrate to the new advanced DFT functions in their application programs for both performance and features. The FFT routines work with transforms of a power of 2 length:

• One-Dimensional FFTs
• Two-Dimensional FFTs

¹⁾ Included only with the Intel^® Cluster MKL product.