[Beowulf] Power calculations , double precision, ECC and power of APU's

Geoffrey Jacobs gdjacobs at gmail.com
Fri Mar 22 07:55:32 PDT 2013


On 03/22/2013 09:42 AM, Vincent Diepeveen wrote:
> 
> Suddenly only single precision without ECC is interesting. First time  
> in history i've see anyone on this list care for that.
> Past decades only double precision with ECC mattered. Single  
> precision overclocked and missing bits as always as all those
> gpu's do because of total overheating, was only for the gamer kids  
> who fry every few months a videocard so to speak,
> because of too high of an overclock.
> 
> Now intel releases a built in gpu line which obviously has no ECC  
> inside the gpu and i doubt it has any double precision
> significance, and then suddenly only single precision without ECC is  
> interesting.
No ECC might be an issue. Public information states approximately 2 SP
ops per DP op. Sounds like the SIMD registers can do both, like a normal
x86 chip.

I'm not the biggest Intel fan, but untruths and deception don't add to
the dialog on this list.

> A dutch saying is: "whose bread you eat his word you speak"
> 
> That's the only relevant saying here and nothing else.
> 
> On Mar 21, 2013, at 5:45 PM, Lux, Jim (337C) wrote:
> 
>> The beard must have grey in it.
>>
>> Jim Lux
<snip>


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