Performace of distributed-memory FFTs

Intel® oneAPI Math Kernel Library

Ask questions and share information with other developers who use Intel® Math Kernel Library.

Performace of distributed-memory FFTs

254 Views

Hi,

Are there any published benchmarks for the distributed memory versions of the MKL FFT functions? I am trying to run an in-place FFT2 on a moderately large problem, but my machine (with 16 MPI processes) essentially grids to a halt; the MPI version of FFTW2 seems to work fine on this problem.

The example I was attempting to run is attached; the machine on which I was trying to run this is a 32-processor SGI Altix with 64 GB of RAM with the Message Passing Toolkit from SGI. Thanks in advance.

Link Copied

0 Replies

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.