Pedro Espinoza wrote:
> Hi Listers:
>
> The program appended below takes almost 9 minutes on RHEL 5, RHEL5.1,
> latest RHEL 4, Centos5.1. However, the same program takes 2m 15
> seconds on OPensuse 10.2 (2.6.18.8 kernel), and on Fedora 8. The box
> has 4 dual-core xeon processors, and with 8 GB memory.
>
>
> However, the same program takes 2min 45s on a box that has one
> dual-core opteron, with RHEL 4 ( 2.6.9-42.0.2.ELsmp SMP).
>
> Any pointers appreciated.
>
Seriously, how long to run eight of them at once?

The number of CPUs and cores is irrelevant unless you're running
multiple threads/processes.

I would speculate that F8 and opensuse 10.2 have newer gcc and that that
makes a significant difference.

It might also be worth trying Intel's icc; I think for some purposes
it's free of charge.

01:47 [summer@(protected)
01:48 [summer@(protected)

real   0m10.719s
user   0m9.841s
sys   0m0.512s
01:48 [summer@(protected) ~]$

Pentium IV 3.00 Ghz, Scientific linux 5.

--

Cheers
John

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