[Beowulf] How many double precision floating point operations per clock cycle for AMD Barcelona?

[Prakashan Korambath]

Could someone confirm the number of double precision 
floating point operations (FLOPS) for AMD Barcelona chips? 
The URL below seems to indicate 4 FLOPS per cycle.  I just 
want to confirm it.  Thanks.


http://forums.amd.com/devblog/blogpost.cfm?catid=253&threadid=87799


Prakashan