Fftw project is not being developed anymore. I am having problems with compiling both fftw2 and fftw3 on my machines. Maybe it would be better to implement support for vendor-specific fft implementations, for example in mkl, acml and so on. They should be faster anyway and there will be continuing development.
Best Regards, Alexander Shaposhnikov -----Original Message----- From: pw_forum-admin at pwscf.org [mailto:[email protected]] On Behalf Of Paolo Giannozzi Sent: Wednesday, September 07, 2005 2:53 PM To: pw_forum at pwscf.org Subject: Re: [Pw_forum] fftw3 On Tuesday 06 September 2005 19:32, Antonio Suriano wrote: > Pw is still written using fftw 2.1.5 or something like that ... > is there a way to link it to fftw3 no, because v.3 has different calling sequences from v.2 > or is in project to switch to fftw3? there is a modified fft_scalar module, written by Pascal Thibaudeau et al., that works with fftw3 on Alpha and SGI machines, but not on Intel PCs, for unknown reasons. Apparently fftw3 is slower than fftw2 on SGI machines, faster on Alpha but only if memory is allocated in such a way to be aligned with pages. Anybody interested in using fftw3 can start from there, if the author(s) of the modified module agree in distributing it. Paolo -- Paolo Giannozzi e-mail: giannozz at nest.sns.it Scuola Normale Superiore Phone: +39/050-509876, Fax:-563513 Piazza dei Cavalieri 7 I-56126 Pisa, Italy _______________________________________________ Pw_forum mailing list Pw_forum at pwscf.org http://www.democritos.it/mailman/listinfo/pw_forum
