Re: Greased Lightning: ATLAS

[Miroslaw Kwasniak]

On Wed, May 18, 2005 at 06:03:26PM -0700, Keith Goodman wrote:
> On 5/18/05, Marius Schamschula <address@hidden> wrote:
> > Get it at:
> > 
> > <http://math-atlas.sourceforge.net/>
> 
> I installed the atlas (3.6.0-19) debian packages: atlas3-base,
> atlas3-base-dev, and atlas3-headers.
> 
> But I don't know how to check if Octave is using them.

On my Debian

$ ldd `which octave-2.1.50`|grep las
        liblapack.so.2 => /usr/lib/atlas/liblapack.so.2 (0x49b65000)
        libblas.so.2 => /usr/lib/atlas/libblas.so.2 (0x4a595000)
                                ^^^^^ 

$ ldd `which octave-2.9.2`|grep las
        liblapack.so.3 => /usr/lib/atlas/liblapack.so.3 (0x4abfb000)
        libblas.so.3 => /usr/lib/atlas/libblas.so.3 (0x4b249000)
        libblas.so.2 => /usr/lib/atlas/libblas.so.2 (0x4a595000)

but self-compiled version:

$ ldd `which octave-2.1.63`|grep las
        liblapack.so.3 => /usr/lib/atlas/liblapack.so.3 (0x4abfb000)
        libcblas.so.3 => /usr/lib/libcblas.so.3 (0x40ec1000)
        libf77blas.so.3 => /usr/lib/libf77blas.so.3 (0x40ee1000)
        libatlas.so.3 => /usr/lib/libatlas.so.3 (0x40efc000)
        libblas.so.3 => /usr/lib/atlas/libblas.so.3 (0x4b249000)


> I haven't installed the atlas3-sse2 packages which (from the package
> description) "use the SSE2 extensions only available on Pentium IV and
> later processors." I have a P4.

Install it
 
> Do I need to fiddle with the Octave configure file (hopefully though
> command line options)? I used, from the Octave wiki,
> 
> ./configure --enable-shared --disable-static
> 
> but perhaps need
> 
> ./configure --enable-shared --disable-static --enable-greased-lightning

I don't know :(



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