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Re: project BIG AppleCrate

aiiadict@gmail.com wrote:

On Dec 30 2007, 9:39 pm, "Michael J. Mahon" <mjma...@aol.com> wrote:



When I'm using my AppleCrate, I find that I frequently look at the
network activity light and the individual 'Crate machine "send" lights.
The patterns are sometimes quite useful for debugging, as is plugging
a video monitor into various 'Crate machines to see what they're doing.



these I/O indicators could be added to the internet interface in the
future.


An interesting problem in itself...


They are especially useful for observing that a setup is working as
intended.  ;-)



Hopefully the network I set up here will be working properly!


It's not hard to get the physical setup working, but when a
parallel program is run, there are lots of "logical" problems
that can occur--in fact, that's when you learn the most.  ;-)


I very frequently keep a monitor plugged into 'Crate machine #2--the
Message Server--since it displays a dynamic histogram of the lengths
of each of the queues it is handling.  This would not be easily
"exported" to a remote user.



8k hires graphic?


40-column text screen.  A message server needs all the space
it can muster.  ;-)

Typically, it's being updated 20-50 times per second, so when
I said "dynamic" I wasn't kidding.  ;-)

-michael

NadaPong: Network game demo for Apple II computers!
Home page:  http://members.aol.com/MJMahon/

"The wastebasket is our most important design
tool--and it's seriously underused."