[ODE] ODE slow on itanium?

[Jaroslav Sinecky]

Maybe some differences in CPU cache size or RAM access speed? I remember 
we did some tests like this in the past where one machine with 
comparable CPU was considerably slower and we concluded it was mainly 
because of memory working on lower frequency.
I'm not really a hardware expert, so if I'm saying nonsenses, someone 
please jump in.

Jaroslav


Bill Sellers wrote:
> Hi All,
>
> I've just been doing some benchmarking of my simulation on various  
> processors and they all behave about as I expect except for a truly  
> dreadful showing on a recent 1.6GHz Itanium system. It's over 3 times  
> slower than an Opteron 252 which is hardly cutting edge anymore, and  
> over twice as slow as the Xeon 5160 in my MacPro. They are all  
> compiled with gcc using the standard "-O3 -ffastmath" options. Anyone  
> got any idea what's wrong since I don't think the Itanium should be  
> this slow...
>
> Cheers
> Bill
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