[SciPy-user] Windows binary 0.5.2 requires SSE2
Wed Feb 7 13:00:50 CST 2007
In message <45C510E8.firstname.lastname@example.org>, John Hassler
>Jonathan Griffitts wrote:
> I have installed SciPy 0.5.2 for Python 2.5 on several Windows
> computers, using the precompiled binary scipy-0.5.2.win32-py2.5.exe.
> This works fine on some, but on others it crashes Python with an
> Instruction exception. The crash is easy to find by running the
> suite or by attempting to make any use of scipy.integrate.quad.
> Digging into it, I see that the exception comes from _quadpack.pyd,
> it dies at a MOVSD instruction. I believe MOVSD is an SSE2
> that is only implemented on the more recent CPUs from both Intel and
>It's a problem with the Athlon. It also happened with a previous
>version of SciPy this summer.
This is not just an Athlon issue. It also fails on a Pentium 3
To reiterate, this binary (scipy-0.5.2.win32-py2.5) uses SSE2
instructions, which are available only on the newer CPUs from both AMD
AnyWare Engineering Boulder, CO, USA
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