[Ngspice-users] Performance problems with Athlon 64 X2?

[Bill R. <ric...@tb...>]

Hi-
I recently upgraded my simulation system from an old XP 1600+ box to an 
Athlon 64 X2 3800+.  I grabbed the x86_64 ngspice package via yum, and 
ran some test cases.  To my surprise, mt test cases ran SLOWER on my new 
Athlon 64 box!!  Being somewhat paranoid of binary RPMs, I downloaded 
the sources and necessary libraries and made it all from scratch.  Ran 
the test cases, and again, the ngspice code on my new box yielded 
exactly the same results as my old box, only over 2X slower!!!  Has 
anyone encountered this kind of behavior with ngspice on an Athlon 64 box? 
I don't have any other benchmarks to compare performance of this machine 
against my now-defunct old machine.  Any help or suggestions would be 
appreciated!
Thanks,
-bill-