From: J. Andrew Rogers (email@example.com)
Date: Tue Nov 17 2009 - 18:03:20 MST
On Nov 17, 2009, at 2:23 PM, Daniel Yokomizo wrote:
> The Monte Carlo AIXI is embarrassingly parallel:
That code will not scale on a conventional cluster computing architecture the way I think some people are assuming unless you significantly restrict the scope. I do not see how it is fully parallelizable in a general way unless I missed something -- the Monte Carlo piece is just a small part. Regardless, it is still a fairly pathological graph-like code with all the scaling and efficiency issues implied on real-world hardware.
In practice, these codes frequently run faster on good desktop machines that a conventional supercomputing cluster. Unfortunate but true. Unless, of course, you use a supercomputer designed for graph-like codes; those would run MC-AIXI very efficiently. You just won't see them in the Top 500 because they aren't built for that.
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