I agree with you..
But proving that you can build a HPC using whatever, be it PS/3s or Furbys or 
nVidia cards, if you can't find people to program it, that's a problem.

(As someone who proposed building a cluster with Arduinos, I recognize that I 
am eating my own dogfood now...  But I DO happen to have 5 Arduino Uno 
Ethernets here in my desk drawer, and I have a 5 port hub/switch as well.  The 
switch claims 1 Gbps, so I probably won't have to worry about saturating its 
bisection bandwidth. Or constructing some sort of toroidal fabric.  Funny, I 
don't see an implementation of MPIduino anywhere though.)

Jim Lux

-----Original Message-----
From: Prentice Bisbal [mailto:[email protected]] On Behalf Of Prentice 
Bisbal
Sent: Friday, May 10, 2013 7:25 AM
To: Lux, Jim (337C)
Cc: [email protected]
Subject: Re: [Beowulf] El Reg: AMD reveals potent parallel processing 
breakthrough


On 05/10/2013 12:04 AM, Lux, Jim (337C) wrote:
> On 5/8/13 6:41 PM, "Prentice Bisbal" <[email protected]> wrote:
>
>> On 05/08/2013 09:41 AM, Lux, Jim (337C) wrote:
>>> The game console business is a strange one, and I don't know that it 
>>> has much to bring to the HPC world (whoa, that will provoke some comment).
>> Roadrunner's body isn't even cold yet, and everyone's already 
>> forgotten about it. :(
>>
>> http://en.wikipedia.org/wiki/IBM_Roadrunner
>> http://en.wikipedia.org/wiki/Cell_microprocessor
>>
>>
> I think roadrunner is an example of a one-off stunt..
> In the long run, "easy programming" is probably a bigger cost driver.
>

One man's "stunt" is another man's "experiment" or "proof-of-concept". I think 
that Roadrunner succeeded as a proof-of-concept for using accelerators. If it 
failed because of programming difficulty, that's a software/people issue. While 
still a significant problem that can't be ignored, I was thinking only about 
hardware, and your statement. The success of Roadrunner in breaking the 
petaflop barrier can't be ignored, and proves that the gaming console world has 
already brought something to the HPC world.

Now it's success as a USABLE computer, is a different story, and a valid point.

Roadrunner isn't the only example of game console technology in HPC. 
Google for "PS3 cluster", and you'll find a multiple cases of people using PS3s 
for HPC clusters. Yes, most were small experiments, but it can be argued that 
the reason PS3 clusters weren't widely adopted was a people issue more than a 
technical hardware capabilities problem - I'm sure there wasn't a large 
ecosystem of software available for the PS3, and while it wasn't hard to create 
a proof-of-concept cluster, I imagine the resources it would take to port all 
the libraries/utilities to the
PS3 hardware scientist are used to having on an x86 system probably prohibited 
practical use and wide-spread adoption.

http://en.wikipedia.org/wiki/PlayStation_3_cluster

--
Prentice
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