Re: [gentoo-dev] -pentium4 vs -pentium3

["Dhruba Bandopadhyay" <dhruba@codewordt.co.uk>]

Jeff Kowing said:
> Robert, I was bit by at least one of the problems a while back.  It
> seems that some of the floating point code is not quite right yet for
> pentium4.  I believe this is a gcc and maybe glibc issue.  The
> particular example that caused me problems is the glibc modf()
> function.  See
> http://forums.gentoo.org/viewtopic.php?t=27211&highlight=python+float
> for more info and a sample c program that will highlight the problem.
>
> It was suggested at the time by Nick Jones (see
> http://article.gmane.org/gmane.linux.gentoo.user/23056) that I back
> down to pentium2.  I haven't updated my portage recently, so I
> haven't looked at what the new updated make.conf file suggests but I
> definitely would follow any advice it gives.

I'm also using P4 and have not faced any problems.  Would changing to P3
result in any noticeable drop in performance?  Also, has gcc 3.2.2
compensated for this problem at all in comparison to previous releases?




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