(j3.2006) Liaison to IFIP WG 2.5
Tue Aug 21 14:38:11 EDT 2007
On Aug 21, 2007, at 12:12 PM, Aleksandar Donev wrote:
> On Tuesday 21 August 2007 08:43, Bill Long wrote:
> Personally, I've wondered if it is possible to do interval FP in an
> off-processor unit (like GPUs or FPGAs or some other thing one can
> add to
typically the communication overhead makes this terribly inefficient
(graphics are a special case, as there's a ton of operations and the
primary i/o isn't to the system it's to the special graphics device).
While devices like Clearspeed do make a comeback once in a while
(recall FPS?) it has proved uneconomic (viz. price/performance is
poor, and often the pure performance is poor due to bottlenecks) in
the long run.
Easy to use, reasonably efficient and *sharp* computations require
close language integration, not a bolt on. And additional hardware
support is pointless without a way to exploit it.
But as I said, J3 and WG5 spent a lot of time on this in the past. We
really don't do ourselves any favors by repeating it all (albeit with
a slightly different cast).
Keith H. Bierman khbkhb at gmail.com
<speaking for myself*> Copyright 2007
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