[SciPy-user] build issue on 64-bit Intel Core2 Duo

Conor Robinson conor.robinson at gmail.com
Wed Jan 31 12:58:08 CST 2007


I'm comming in on this discussion late, however I have been
recompiling libs using icc and ifort on the 3.0ghz version on this
machine with the -fast arg, there are very noticible improvements when
using the compilers from intel.  I had problems getting my
i686-apple-darwin8-gcc-4.0.1 to optimize for the 5150.  There is 64bit
support for linux and windows in ifort and icc.  Most errors i ran
into with optimizing centered around -O3 or intel's -fast global
optimize args implying -static, you may need to manually feed what -O3
implies without -static.  GNU does not really support this chip yet
(from what I understand), although the pentium pro (i686 arch) seems
to do a decent job.

On 1/31/07, Scott Ransom <sransom at nrao.edu> wrote:
> This works for me on a 64-bit Debian Core2 Duo system.
>
> eiger:~$ uname -a
> Linux eiger 2.6.18-3-amd64 #1 SMP Sun Dec 10 19:57:44 CET 2006 x86_64
> GNU/Linux
>
> eiger:~$ python cpuinfo.py
> CPU information: getNCPUs=2 has_mmx has_sse has_sse2 is_64bit is_Intel
> is_Nocona is_i686
>
> Scott
>
>
> On Wednesday 31 January 2007 02:09, Nadav Horesh wrote:
> > > Few more informations:
> > >
> > >python numpy/distutils/cpuinfo.py:
> > >
> > >CPU information: getNCPUs=4 has_mmx has_sse has_sse2 is_64bit
> > > is_Intel is_XEON is_Xeon is_i686
> >
> > Well,
> >  Crossing our systems' info it looks to me that the best and straight
> > forward way to identify Intel's imitation to amd64 arch is:
> >
> > def _is_Nocona(self):
> >      return self.is_64bit() and self.is_Intel() and self.is_i686()
> >
> > Did not test it but it fits and looks logical.
> >
> >   Nadav.
>
> --
> Scott M. Ransom            Address:  NRAO
> Phone:  (434) 296-0320               520 Edgemont Rd.
> email:  sransom at nrao.edu             Charlottesville, VA 22903 USA
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