[Numpy-discussion] Different results from repeated calculation
Charles R Harris
Thu Feb 1 22:07:50 CST 2007
On 1/28/07, Keith Goodman <email@example.com> wrote:
> On 1/27/07, Keith Goodman <firstname.lastname@example.org> wrote:
> > On 1/27/07, Fernando Perez <email@example.com> wrote:
> > > It's definitely looking like something SMP related: on my laptop, with
> > > everything other than the hardware being identical (Linux distro,
> > > kernel, numpy build, etc), I can't make it fail no matter how I muck
> > > with it. I always get '0 differences'.
> > >
> > > The desktop is a dual-core AMD Athlon as indicated before, the laptop
> > > is an oldie Pentium III. They both run the same SMP-aware Ubuntu i686
> > > kernel, since Ubuntu now ships a unified kernel, though obviously on
> > > the laptop the SMP code isn't active.
> > After installing a kernel that is not smp aware, I still have the same
> The problem goes away if I remove atlas (atlas3-sse2 for me). But that
> just introduces another problem: slowness.
This problem may be related to this bug:
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