[Beowulf] GP-GPU experience

[Mark Hahn]

> GPU's completely annihilate cpu's everywhere.

this is complete nonsense.  GPUs do very nicely on a quite narrow 
set of problems.  for a somewhat larger set of problems, they do OK,
but pretty "meh", really, considering.  for many problems, GPUs 
are irrelevant, whether that's because the problem uses too much 
memory, or already scales well on non-GPU, or doesn't have a GPU-friendly
structure.

> 818 execution units that can do multiplication 32 x 32 bits == 64 bits.
> That kicks butt. bye bye cpu's.

well, for your application, which is quite narrow.
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