Developer Reference

Contents

DftiCommitDescriptorDM

Performs all initialization for the actual FFT computation.

Syntax

status
=
DftiCommitDescriptorDM
(
handle
)
;
Include Files
  • mkl_cdft.h
Input Parameters
handle
The descriptor handle. Must be valid, that is, created in a call to
DftiCreateDescriptorDM
.
Description
The cluster FFT interface requires a function that completes initialization of a previously created descriptor before the descriptor can be used for FFT computations in a particular MPI process. The
DftiCommitDescriptorDM
function performs all initialization that facilitates the actual FFT computation. For the current implementation, it may involve exploring many different factorizations of the input length to search for highly efficient computation method.
Any changes of configuration parameters of a committed descriptor via the set value function requires a re-committal of the descriptor before a computation function can be invoked. Typically, this committal function is called right before a computation function call .
Return Values
The function returns
DFTI_NO_ERROR
when completes successfully. If the function fails, it returns a value of another error class constant (for the list of constants, refer to Error Codes).
Prototype
    MKL_LONG DftiCommitDescriptorDM(DFTI_DESCRIPTOR_DM_HANDLE handle);    

Product and Performance Information

1

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