Re: Simulating an assembler?
- From: John Devereux <jdREMOVE@xxxxxxxxxxxxxxxxxx>
- Date: Fri, 19 Aug 2005 02:05:26 -0000
John.S.Novak@xxxxxxxxx, III <jsn@xxxxxxxxx> writes:
> In article <11f0d1q8o4gf2b7@xxxxxxxxxxxxxxxxxx>, boblarson@xxxxxxxxxxx
> says...
>
> > Do we now have computers capable of designing and testing an assembler in
> > software? Has it been done yet?
>
> http://www.nanoengineer-1.com/mambo/index.php?
> option=com_content&task=view&id=66&Itemid=2
>
> The URL above links to an article describing the simulation of a
> Drexler-Merkle differential gear, in a software package called
> nanoengineer-1. For scale purposes, the gear has 8292 atoms. The six
> degree of freedom manipulator arm designed by (I think) Merkle has
> something like 3000 atoms, as I recall. And the full scale assembler
> designs (I should put those in scare quotes, really) are on the order of
> three to four million atoms.
>
> So, since this is considered to be significant (nanodot.org is claiming
> it to be a first) I wager to say that the very much larger simulations
> of full assemblers are not yet feasible. 65 ps of simulation took
> almost 8 hours on a midrange laptop; even under the dubious assumption
> that simulations of this type are linear in the number of atoms, a full
> assembler would take about a thousand times as long to simulate.
While not at all disagreeing with your post, I would like to point out
that supercomputers are (at least) about a thousand times faster than
a midrange laptop...
<SNIP healthy skepticism>
--
John Devereux
.
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