[Beowulf] Nvidia, cuda, tesla and... where's my double floating point?

richard.walsh at comcast.net richard.walsh at comcast.net
Tue Jun 17 06:52:10 PDT 2008


-------------- Original message -------------- 
From: Vincent Diepeveen <diep at xs4all.nl> 

> Seems the next CELL is 100% confirmed double precision. 
Mmm ... "it seems ... 100% confirmed" ... this is confusing, it is either certain or "it seems ...", not both.  I have not seen it confirmed anywhere that the PowerXCell (the new chip just announced) is 100% IEEE 754 double-precision compatible.  The old generation chip was, but at 1/4 the speed.  The new chip runs double precision at ~100 Gflops, and I am guessing that now its double precision has limited IEEE 754 compatibility like single precision did/does... not that this is important to all applications.   If you "know" otherwise and can point me to supporting documentation, I would be interested.
rbw
-- 

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

Niels Bohr 

-- 

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