On 11/11/10 03:49 PM, Dima Pasechnik wrote:
Could anyone tell me whether we build libatlas and libcblas on MacOSX
Intel (and place them in SAGE_LOCAL/lib)?
I know this is not the case on PPC.
ATLAS, it is not built on OS X at all.
There's a really small python script (spkg-install) which calls a long bash
script (spkg-install-script). In that script it has:
if [ `uname` = "Darwin" ]; then
exit 0
fi
It would be good if we could get rid of the python dependency, as then ATLAS
could start building and it would significantly reduce the build time of Sage on
many platforms.
BLAS is different however. If we look at spkg-install for that, we see:
if [ "`uname`" = "Darwin" -a "`uname -p`" = "i386" ]; then
echo "No need to build blas on OSX Intel."
exit 0
fi
I am working on setup.py for CVXOPT that might be dependent upon
this.
As far as I can see, we never build ATLAS on OS X, and don't build blas on Intel
based OS X systems.
However, there is a cblas as part of the GNU Scientific library, but to the best
of my knowledge, that's not used outside of there, and only a fallback if the
ATLAS cblas is not present.
I would also appreciate knowing how to dig up the hardware version. On
my MacOSX 10.5 PPC I have
$ python
import os
os.uname()[4]
'Power Macintosh'
os.uname()[0]
'Darwin'
What is it on Intel? On 10.4 PPC?
On bsd.math, which is intel based.
os.uname()[4]
'i386'
os.uname()[0]
'Darwin'
os.uname()
('Darwin', 'bsd.local', '10.4.0', 'Darwin Kernel Version 10.4.0: Fri Apr 23
18:28:53 PDT 2010; root:xnu-1504.7.4~1/RELEASE_I386', 'i386')
Thanks,
Dima
Dave
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