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(Humans Invent)   The world's first crowdsourced, affordable supercomputer   (humansinvent.com) divider line 2
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3092 clicks; posted to Geek » on 29 Jul 2013 at 12:04 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-07-29 02:58:24 PM
1 votes:
The two things a supercomputer needs are lots and lots of double precision FLOPS, and lots and lots of bandwidth to feed them.

It doesn't have double precision (only single) and, as HindiDiscoMonster pointed out, insufficient linterlinks to supply the bandwidth.  If you really want a supercomputer, try buying an AMD6950 (or Nvidia 680 or 780) and writing something seriously parallel (although with ~3G of memory, other supercomputers will kick sand in your face).

Basically, single precision is only good for problems that can be solved in real time.  Doing an FFT on audio data to 32k of samples sounds pretty bad just due to accumulated rounding errors.  Trying to do real supercomputing is just a joke (but might be great for serious DSP jobs).
2013-07-29 02:09:07 PM
1 votes:
In addition to those things you guys pointed out: What makes a supercomputer a supercomputer in the first place is parallel interconnects. Multiple parallel connections to multiple boards all at once. The overhead for TCP over ethernet is too high and will bottleneck the memory and cpu communication across nodes. If they wanted to make it perfect, each board would have 4 InfiniBand connections... either 4x or 12x which would allow the kind of bandwidth across the bus necessary to prevent bottlenecks between nodes. This is nothing more than a glorified beowulf cluster with boards that contain a bunch of cores.
 
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