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[James Raynolds <JRaynolds@uamail.albany.edu>]

Steven,

        My colleague Lenore Mullin and myself at the University at Albany,
State University of New York, are working on FFT's and have OPENMP and MPI
versions of very efficient 1-d FFTS which we can provide you.  We are nearly
finished with a 3-d version which we believe to be the fastest available
anywhere.

Sincerely,
Jim Raynolds

-----Original Message-----
From: Steven Homolya [mailto:Steven.Homolya@spme.monash.edu.au]
Sent: Monday, October 20, 2003 6:06 AM
To: sympa@abinit.org
Cc: abinit
Subject: [abinit-forum] FFTs in parallel


Dear All,

I noticed that for d-electron elements, the high ecut required means that
FFTs dominate memory and CPU time requirements. It seems like the FFTs
would be a good starting point for distributed memory parallelisation that
goes beyond k-point parallelisation and allows us to treat very large
cases.

Is anyone working on parallelising the FFTs?

If not, I'm considering implementing it using MPI version of fftw. If I do 
decide to go ahead with it, which version of the code should I start with, 
so that the modifications might be included in future releases?

Steve

-- 
Steven Homolya
School of Physics and Materials Engineering
Monash University, VIC 3800
Australia
Tel: +61 3 9905 3694
Fax: +61 3 9905 3637