topic cluster fft routines openmp support? in Intel® oneAPI Math Kernel Library

cluster fft routines openmp support?

giorgos17 — Mon, 08 Feb 2010 19:03:16 GMT

Greetings,

I am developing an MPI application for a cluster of SMP systems. It is built around the MKL cluster FFT

routines. Can these routines take advantage of OpenMP threads, or should I start multiple MPI processes

on each SMP system?

Thank you.

cluster fft routines openmp support?

Gennady_F_Intel — Tue, 09 Feb 2010 11:28:40 GMT

Quoting giorgos17

Can these routines take advantage of OpenMP threads, or should I start multiple MPI processes

on each SMP system?

Can these routines take advantage of OpenMP threads -

not at this moment. We are going to implement this opportunityin the nearest version of MKL.

should I start multiple MPI processes

on each SMP system? What MPI version are you going to use? if we are talking about Intel MPI version, then we recommend you to use version 3.2.1 which really support the hybridmode.

--Gennady

cluster fft routines openmp support?

giorgos17 — Tue, 09 Feb 2010 14:49:40 GMT

I am planning to use MPICH2

cluster fft routines openmp support?

Vladimir_Petrov__Int — Tue, 09 Feb 2010 15:37:23 GMT

As Gennady mentioned, current implementation performs best if only MPI parallelization is used. Support for MPI+OpenMP parallelization will be added in the nearest future.

Best regards,

-Vladimir

cluster fft routines openmp support?

giorgos17 — Tue, 09 Feb 2010 15:43:28 GMT

Thank you for your response.

Giorgos