Re: GA144 article

From	Paul Rubin <no.email@nospam.invalid>
Newsgroups	comp.lang.forth
Subject	Re: GA144 article
References	(11 earlier) <420f3e55-76d1-43eb-85b7-182c02f3fd22@googlegroups.com> <7x1ujrydfd.fsf@ruckus.brouhaha.com> <94845d94-80bf-48ec-8676-46553238c95f@googlegroups.com> <7xsjc7wmrn.fsf@ruckus.brouhaha.com> <a218ea56-0265-4559-a462-51a7f1a182cb@googlegroups.com>
Date	2012-08-01 14:16 -0700
Message-ID	<7x62928g8u.fsf@ruckus.brouhaha.com> (permalink)
Organization	Nightsong/Fort GNOX

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rickman <gnuarm@gmail.com> writes:
> I can't say anything about your app, but I can't see how the
> interprocessor comms capacity is lacking in any way relative to the
> speed of the processors.

I remember I was trying to code the RC4 stream cipher, which wants a 256
byte ram array most straightforwardly implemented using a word per byte.
With diagonal connections you could put the algorithm on one node and
use 4 of the 8 adjacent nodes as ram, quite nice.  With just orthogonal
connections unless there's a clever layout I didn't spot, you have to
use 7 nodes and the ram data has to cross 3 hops with some delays at
each of the relay nodes (the're not just wire nodes).  I looked into
doing it with 3 nodes packing 2 bytes into each ram word, but it was
ugly and inefficient (tons of bit shifts) and not at all clear that I
could fit all the instructions into ram.

I may look at the app note md5 implementation to see if it would be
obviously smaller/faster with more connections.  The existing way is
pretty ugly in my opinion.

> How do you sync anything without waiting?  

I just mean that if the writer node is faster than the reader, then the
reader doesn't have to wait.

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GA144 article Mark Wills <markrobertwills@yahoo.co.uk> - 2012-07-18 03:48 -0700
  Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-19 10:51 -0700
    Re: GA144 article Mark Wills <markrobertwills@yahoo.co.uk> - 2012-07-20 01:30 -0700
      Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-20 01:48 -0700
        Re: GA144 article Mark Wills <markrobertwills@yahoo.co.uk> - 2012-07-20 03:25 -0700
        Re: GA144 article Syd Rumpo <usenet@neonica.co.uk> - 2012-07-20 11:59 +0100
      Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-22 18:59 -0700
        Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-22 19:16 -0700
          Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-22 19:31 -0700
            Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-22 20:08 -0700
              Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-23 16:24 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-23 22:33 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-24 14:04 -0700
            Re: GA144 article vandys@vsta.org - 2012-07-23 03:34 +0000
            Re: GA144 article Bernd Paysan <bernd.paysan@gmx.de> - 2012-07-23 14:11 +0200
              Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-23 16:47 -0700
              Re: GA144 article "Clyde W. Phillips Jr." <cwpjr02@gmail.com> - 2012-07-24 20:11 -0700
          Re: GA144 article Richard Owlett <rowlett@pcnetinc.com> - 2012-07-23 02:04 -0500
  Re: GA144 article Daniel Kalny <dkalny@seznam.cz> - 2012-07-24 02:37 -0700
    Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-24 03:12 -0700
      Re: GA144 article stephenXXX@mpeforth.com (Stephen Pelc) - 2012-07-24 10:36 +0000
        Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-24 10:28 -0700
          Re: GA144 article Albert van der Horst <albert@spenarnc.xs4all.nl> - 2012-07-24 22:12 +0000
      Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-24 14:49 -0700
        Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-26 13:25 -0700
          Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-27 13:17 -0700
            Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-27 14:31 -0700
              Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-27 22:02 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-28 23:03 -0700
                Re: GA144 article marko <marko@marko.marko> - 2012-07-30 09:12 +1000
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-31 01:09 -0700
                Re: GA144 article marko <marko@marko.marko> - 2012-08-01 00:19 +1000
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-31 09:59 -0700
                Re: GA144 article marko <marko@marko.marko> - 2012-08-01 10:13 +1000
                Re: GA144 article Bernd Paysan <bernd.paysan@gmx.de> - 2012-08-01 00:59 +0200
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-31 16:54 -0700
                Re: GA144 article Luca Saiu <positron@gnu.org> - 2012-08-04 10:46 +0200
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-05 11:04 -0700
                Re: GA144 article Luca Saiu <positron@gnu.org> - 2012-08-06 02:02 +0200
                Re: GA144 article Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-06 02:16 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-30 08:23 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-30 21:33 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-31 01:51 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-31 11:48 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-07-31 14:54 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-07-31 16:09 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-01 12:57 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-01 14:16 -0700
                Re: GA144 article vandys@vsta.org - 2012-08-01 22:32 +0000
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-01 16:03 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-01 16:13 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-01 16:10 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-01 22:18 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-02 11:47 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-02 14:32 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-02 16:01 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-02 16:38 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-03 08:40 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-03 09:19 -0700
                Re: GA144 article rickman <gnuarm@gmail.com> - 2012-08-03 11:15 -0700
                Re: GA144 article Paul Rubin <no.email@nospam.invalid> - 2012-08-05 15:50 -0700
                Re: GA144 article Mark Wills <markrobertwills@yahoo.co.uk> - 2012-08-06 02:21 -0700

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