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From: munck@Mill-Creek-Systems.com (Robert Munck)
Subject: Re: Space Station S/W in Ada -- No Tasking?
Date: 1998/05/05
Date: 1998-05-05T21:28:27+00:00	[thread overview]
Message-ID: <354f8259.1275955@news.mindspring.com> (raw)
In-Reply-To: rracine.1.000A5CD6@draper.com


On Tue, 5 May 1998 15:21:41 GMT, rracine@draper.com (Roger Racine)
wrote:

> ... there is tasking being used for the ISS.  I was one 
>of the people who convinced the Boeing management to allow it

You did good.  Robert Dewar's experience may be different, but
in 32-odd years in the business and a great deal of DoD, NASA,
and ESA involvement, I've never seen a large cyclic-executive-
architecture system that was in any way successful.

The trouble is that cyclic-exec projects are easier for bad
managers to manage.  They don't have to understand tough
concepts like deadlock, critical sections, rate monotonic
scheduling, etc.

Boeing management had to be convinced?  I hesitate to ask,
but how is the 777 avionics s/w structured?

Bob Munck
Mill Creek Systems LC





  reply	other threads:[~1998-05-05  0:00 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1998-05-03  0:00 Space Station S/W in Ada -- No Tasking? Robert Munck
1998-05-03  0:00 ` Robert Dewar
1998-05-07  0:00   ` JP Thornley
1998-05-05  0:00 ` LarryButts
1998-05-05  0:00 ` Roger Racine
1998-05-05  0:00   ` Robert Munck [this message]
1998-05-12  0:00     ` Carla Taylor
1998-05-06  0:00   ` William D. Ghrist
1998-05-06  0:00 ` Robert I. Eachus
1998-05-07  0:00   ` Joe Gwinn
1998-05-08  0:00     ` Dale Pontius
1998-05-08  0:00     ` Roger Racine
1998-05-08  0:00       ` Joe Gwinn
1998-05-08  0:00   ` Chris Warwick
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