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RE: fftw on cygwin
From: |
James R. Phillips |
Subject: |
RE: fftw on cygwin |
Date: |
Wed, 10 Aug 2005 14:01:50 -0700 (PDT) |
--- Paul Billings wrote:
> I believe a generic version of FFTW would suffice. In contrast to ATLAS
> which does extensive benchmarking at make/compile time, FFTW does run-time
> measurements (or can load previously saved measurements or "wisdom").
> Whatever instruction set that cygwin is generally targeting should be fine,
> although I suppose you could have two versions: one for "barebones" and one
> for SSE/SSE2 or whatever is appropriate (I forget the differences). The
> user would simply check one or the other in the cygwin setup application.
>
> Paul
The FFTW web page indicates that a package built with sse2 optimization (the
most commonly available) would still run on a non-sse2 machine, so that is a
strong possibility.
I am experimenting with the source today, trying to build a shared
double-precision library on cygwin. The build system uses libtool, which I am
fairly unfamiliar with, so this is a bit trial and error.
Would a double-precision library be sufficient for most uses, including for
linking with octave?
The debian octave package also includes hdf5 libs as a dependency. This is
support for a portable scientific data format. Do you have use for this on
cygwin?