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

Vincent Diepeveen diep at xs4all.nl
Fri Mar 22 07:42:34 PDT 2013


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.

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
>
>
> -----Original Message-----
> From: beowulf-bounces at beowulf.org [mailto:beowulf- 
> bounces at beowulf.org] On Behalf Of Hearns, John
> Sent: Wednesday, March 20, 2013 5:52 AM
> To: beowulf at beowulf.org
> Subject: Re: [Beowulf] Power calculations , double precision, ECC  
> and power of APU's
>
>
>
> The old joke in this sector. If you want to be an expert in HPC,  
> you only need to know one answer  -- "It all depends"
>
>
> Hmmmmm...... that one works with storage benchmarking too.
> By jingo, I think you're onto something.
>
> Note to self - grow a beard so you can stroke it pensively while  
> you ponder deep answers to any questions regarding HPC, then sagely  
> reply "It all depends"
>
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