On Thu, Apr 16, 2009 at 6:51 AM, Jason Moxham <ja...@njkfrudils.plus.com> wrote:

> Could you run config.guess from gmp-4.3.0

It is reporting:
core2-unknown-linux-gnu

So when I force config to use --build=core2-pc-linux-gnu I get much
better results (as expected):

Intel Xeon E5405 @ 2.0GHz (Family 6, Model 23, Stepping 6)
Linux 64bit, gcc version 4.1.2
83338 bits (25088 digits)
Library         Time1           Time2
----------      ---------       ---------
GMP 4.3.0       2m34.857s       2m34.835s
MPIR 1.1.0      2m58.627s       2m58.706s (--build=core2)
MPIR 1.0.0      3m00.482s       3m00.461s (--build=core2)
MPIR 1.0.0      3m17.198s       3m17.288s (default)
GMP 4.2.4       5m38.156s       5m38.173s
MPIR 1.1.0      5m45.308s       5m45.236s (default)

Would using penryn-unknown-linux-gnu as Jason suggested actually make
a difference in the code selection compared to core2?

Jeff.

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