[Beowulf] Is PowerXCell eDP fully IEEE 754 compliant ... ?? ... the old Cell is/was ...

richard.walsh at comcast.net richard.walsh at comcast.net
Thu Jun 12 12:12:34 EDT 2008


All,

I have not been able to get an exact answer to this question.  The older
chip, while much slower in double-precision was fully IEEE compliant
I am fairly sure.

I believe that IBM has improved the compliance of single-precision
in the PowerXCell (although it is still not fully compliant), but its double-
precision has fallen back to the single precision level of compliance to 
allow for the performance boost.  This leaves it at close to parity in
compliance when compared to the competition (ATI and NVIDIA) in
the volume-economics DLP accelerator arena. 

Could someone that is certain of the answer to this question clarify?

Best Regards,

rbw
-- 

"Making predictions is hard, especially about the future." 

Niels Bohr 

-- 

Richard Walsh 
Thrashing River Consulting-- 
5605 Alameda St. 
Shoreview, MN 55126 

Phone #: 612-382-4620
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