Developer Reference

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DFTI_WORKSPACE

The computation step for some FFT algorithms requires a scratch space for permutation or other purposes. To manage the use of the auxiliary storage,
Intel® oneAPI Math Kernel Library
enables you to set the configuration parameter
DFTI_WORKSPACE
with the following values:
DFTI_ALLOW
(default) Permits the use of the auxiliary storage.
DFTI_AVOID
Instructs
Intel® oneAPI Math Kernel Library
to avoid using the auxiliary storage if possible.

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.