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From: Ken Garlington <garlingtonke@lmtas.lmco.com>
Subject: Re: Ariane 5 - not an exception?
Date: 1996/07/29
Date: 1996-07-29T00:00:00+00:00	[thread overview]
Message-ID: <31FCAA74.5B47@lmtas.lmco.com> (raw)
In-Reply-To: 31F8FD5F.41C67EA6@escmail.orl.mmc.com


Theodore E. Dennison wrote:
> 
> I could see the logic in rewriting the code on the backup machine
> to try to continue with "best effort" data when an error is detected,
> but I can't agree with the logic that the primary machine should
> continue to spit out data, even when it knows it has errors (and there
> is a backup machine available), which is what the committe seems to
> be suggesting.

Note that this would require the backup computer to have different
software than the primary. That isn't the case now:

"There are two SRIs operating in parallel, with identical hardware and software.
One SRI is active and one is in "hot" stand-by, and if the OBC detects that the
active SRI has failed it immediately switches to the other one, provided that
this unit is functioning properly."

To keep the software identical in both, you would want both to attempt to
produce semi-valid data in the presence of errors. Having identical software
in both might be advantageous from an analysis standpoint.

> --
> T.E.D.
>                 |  Work - mailto:dennison@escmail.orl.mmc.com  |
>                 |  Home - mailto:dennison@iag.net              |
>                 |  URL  - http://www.iag.net/~dennison         |

-- 
LMTAS - "Our Brand Means Quality"




  reply	other threads:[~1996-07-29  0:00 UTC|newest]

Thread overview: 194+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
1996-07-25  0:00 Ariane 5 - not an exception? Simon Bluck
1996-07-25  0:00 ` Multiple reasons for failure of Ariane 5 (was: Re: Ariane 5 - not an exception?) Kirk Beitz
1996-07-26  0:00   ` ++           robin
1996-08-05  0:00     ` Darren C Davenport
1996-08-06  0:00       ` U32872
1996-08-07  0:00         ` Robert Dewar
1996-08-08  0:00           ` Pascal Martin @lone
1996-08-09  0:00             ` Robert Dewar
1996-08-10  0:00               ` dwnoon
1996-08-11  0:00                 ` Robert Dewar
1996-08-15  0:00                   ` dwnoon
1996-08-16  0:00                     ` Robert Dewar
1996-08-20  0:00                       ` dwnoon
1996-08-12  0:00                 ` Ken Garlington
1996-08-15  0:00                 ` Richard Riehle
1996-08-22  0:00                   ` ++           robin
1996-08-23  0:00                     ` Ken Garlington
1996-08-31  0:00                     ` Ada versus PL/I " Richard Riehle
1996-09-02  0:00                       ` ++           robin
1996-09-02  0:00                         ` Richard A. O'Keefe
1996-09-03  0:00                           ` ++           robin
1996-09-03  0:00                             ` Robb Nebbe
1996-09-17  0:00                             ` shmuel
1996-09-17  0:00                               ` Jay McFadyen
1996-09-18  0:00                                 ` John McCabe
1996-09-20  0:00                               ` shmuel
1996-09-03  0:00                       ` ++           robin
1996-09-04  0:00                         ` Robert Dewar
1996-09-07  0:00                           ` ++           robin
1996-09-06  0:00                             ` PL/I or PL/1 Larry Hazel
1996-09-03  0:00                       ` Ada versus PL/I (was: Re: Ariane 5 - not an exception?) J. Kanze
1996-09-07  0:00                         ` Robert Dewar
1996-09-09  0:00                           ` ++           robin
1996-09-09  0:00                             ` Robert Dewar
1996-09-09  0:00                               ` Ken Garlington
1996-09-11  0:00                     ` Multiple reasons for failure of Ariane 5 " J.Worringen
1996-09-12  0:00                       ` Ken Garlington
1996-09-14  0:00                       ` David Alex Lamb
1996-09-14  0:00                       ` Use DejaNews to retrieve Ariane discussion David Alex Lamb
1996-09-19  0:00                         ` Earl H. Kinmonth
1996-08-11  0:00               ` Multiple reasons for failure of Ariane 5 (was: Re: Ariane 5 - not an exception?) ++           robin
     [not found]               ` <4uibvh$References: <Dv45EJ.8r@fsa.bris.ac.uk>
1996-08-16  0:00                 ` A. Grant
1996-08-08  0:00         ` bohn
1996-07-26  0:00   ` Robert I. Eachus
1996-08-23  0:00   ` Jon S Anthony
1996-08-26  0:00     ` ++           robin
1996-08-23  0:00   ` Jon S Anthony
1996-08-23  0:00     ` ++           robin
1996-08-23  0:00       ` Richard A. O'Keefe
1996-08-23  0:00         ` Ken Garlington
1996-08-26  0:00         ` ++           robin
1996-08-27  0:00           ` Ken Garlington
1996-08-28  0:00             ` Larry Kilgallen
1996-08-29  0:00               ` Ken Garlington
1996-08-30  0:00             ` ++           robin
1996-08-30  0:00               ` David Weller
1996-09-04  0:00               ` Ken Garlington
1996-09-06  0:00                 ` Sandy McPherson
1996-09-09  0:00                   ` Ken Garlington
1996-08-30  0:00         ` Jon S Anthony
1996-08-26  0:00       ` Ken Garlington
1996-08-26  0:00         ` Dave Jones
1996-08-27  0:00           ` Ken Garlington
1996-08-30  0:00             ` ++           robin
1996-09-04  0:00               ` Ken Garlington
1996-09-06  0:00                 ` ++           robin
1996-09-18  0:00               ` Merlin Dorfman
1996-09-20  0:00                 ` John McCabe
1996-08-30  0:00         ` ++           robin
1996-08-30  0:00           ` John McCabe
1996-09-06  0:00       ` Jon S Anthony
1996-09-06  0:00         ` Robert Dewar
1996-07-26  0:00 ` Ariane 5 - not an exception? JP Thornley
1996-07-29  0:00   ` Ken Garlington
1996-07-29  0:00   ` Nigel Tzeng
1996-07-29  0:00   ` JP Thornley
1996-07-30  0:00   ` Robert I. Eachus
1996-07-31  0:00     ` JP Thornley
1996-08-01  0:00       ` Alan Brain
1996-08-02  0:00         ` JP Thornley
1996-08-01  0:00   ` Ken Garlington
1996-07-26  0:00 ` Theodore E. Dennison
1996-07-29  0:00   ` Ken Garlington [this message]
1996-07-26  0:00 ` Bob Gilbert
1996-07-29  0:00   ` Martin Tom Brown
1996-07-30  0:00     ` John McCabe
1996-07-31  0:00       ` Greg Bond
1996-08-03  0:00         ` John McCabe
1996-07-26  0:00 ` ++           robin
1996-07-29  0:00   ` Bill Angel
1996-07-29  0:00     ` Paul_Green
1996-07-30  0:00     ` Bob Kurtz
1996-07-30  0:00     ` Richard Shetron
1996-07-30  0:00       ` ++           robin
1996-07-30  0:00     ` Nancy Mead
1996-07-31  0:00       ` Steve O'Neill
1996-07-31  0:00       ` Tucker Taft
1996-08-01  0:00       ` root
1996-08-01  0:00         ` Tucker Taft
1996-07-30  0:00     ` Ken Garlington
1996-07-30  0:00     ` Lloyd Fischer
1996-08-04  0:00     ` Richard Riehle
1996-08-05  0:00       ` John McCabe
1996-08-05  0:00       ` Nigel Tzeng
1996-08-06  0:00         ` John McCabe
1996-08-05  0:00       ` Fergus Henderson
1996-08-13  0:00       ` ++           robin
1996-08-13  0:00         ` Ken Garlington
1996-08-13  0:00           ` Kirk Bradley
1996-08-14  0:00             ` Ken Garlington
1996-08-18  0:00           ` PL/I Versus Ada (Was: Arianne ...) Richard Riehle
1996-08-19  0:00             ` Robert Dewar
1996-08-20  0:00             ` Lon Amick
1996-08-21  0:00             ` Tony Konashenok
1996-08-28  0:00               ` Richard Riehle
1996-08-29  0:00                 ` Lon D. Gowen, Ph.D.
1996-08-30  0:00                   ` Tony Konashenok
1996-08-30  0:00                     ` Adam Beneschan
1996-08-30  0:00                 ` John McCabe
1996-08-21  0:00             ` Lon D. Gowen, Ph.D.
1996-08-21  0:00             ` Tim Dugan
1996-08-23  0:00             ` arbuckj
1996-08-22  0:00           ` Ariane 5 - not an exception? ++           robin
1996-08-22  0:00             ` Ken Garlington
1996-08-13  0:00         ` Darren C Davenport
1996-08-14  0:00         ` John McCabe
1996-08-19  0:00           ` Chris Papademetrious
1996-08-22  0:00           ` ++           robin
1996-08-22  0:00             ` John McCabe
1996-08-23  0:00               ` Ken Garlington
1996-08-24  0:00                 ` John McCabe
1996-08-26  0:00                   ` Byron B. Kauffman
1996-08-27  0:00                     ` John McCabe
1996-08-28  0:00                       ` Byron B. Kauffman
1996-08-28  0:00                         ` Robert Dewar
1996-08-29  0:00                           ` Ted Dennison
1996-08-30  0:00                         ` John McCabe
1996-08-22  0:00             ` Martin Tom Brown
1996-08-23  0:00             ` Bob Gilbert
1996-08-24  0:00               ` Robert I. Eachus
1996-08-25  0:00                 ` John McCabe
1996-08-27  0:00                 ` Tom Speer
1996-08-26  0:00               ` Jon S Anthony
1996-08-20  0:00         ` Richard Riehle
1996-07-30  0:00   ` Steve O'Neill
1996-07-31  0:00     ` Martin Tom Brown
1996-07-31  0:00       ` Nigel Tzeng
1996-08-02  0:00       ` Ken Garlington
1996-08-03  0:00         ` Thomas Kendelbacher
1996-08-01  0:00     ` ++           robin
1996-08-01  0:00       ` Ken Garlington
1996-08-05  0:00         ` John McCabe
1996-08-06  0:00           ` Ken Garlington
1996-08-06  0:00           ` Ken Garlington
1996-08-06  0:00           ` Mark van Walraven
1996-08-02  0:00       ` Pascal Martin @lone
1996-08-03  0:00         ` Dr. Richard Botting
1996-08-05  0:00           ` system
1996-08-06  0:00         ` ++           robin
1996-08-08  0:00           ` Darius Blasband
1996-08-10  0:00             ` dwnoon
1996-08-12  0:00               ` Thomas Kendelbacher
1996-08-13  0:00                 ` ++           robin
1996-08-13  0:00             ` ++           robin
1996-08-13  0:00             ` Roy Gardiner
1996-08-13  0:00               ` Ken Garlington
1996-08-13  0:00               ` Lance Kibblewhite
1996-08-15  0:00             ` Richard Riehle
1996-08-05  0:00       ` Steve O'Neill
1996-08-06  0:00         ` Francis Lipski
1996-08-07  0:00           ` Martin Tom Brown
1996-08-09  0:00             ` Ken Garlington
1996-08-06  0:00         ` Frank Manning
1996-08-08  0:00           ` Steve O'Neill
1996-08-09  0:00             ` Pat Rogers
1996-08-09  0:00           ` JP Thornley
1996-08-13  0:00         ` ++           robin
1996-08-13  0:00           ` Steve O'Neill
1996-07-30  0:00   ` Ken Garlington
1996-08-02  0:00     ` Craig P. Beyers
1996-08-01  0:00   ` Jon S Anthony
1996-08-02  0:00   ` James Kanze US/ESC 60/3/141 #40763
1996-08-06  0:00   ` Robert I. Eachus
1996-08-06  0:00   ` Stefan 'Stetson' Skoglund
1996-07-27  0:00 ` Bill Angel
1996-07-30  0:00 ` Dr. Richard Botting
1996-07-30  0:00   ` David Weller
1996-07-30  0:00     ` Robert Dewar
  -- strict thread matches above, loose matches on Subject: below --
1996-08-08  0:00 Marin David Condic, 407.796.8997, M/S 731-93
1996-08-09  0:00 ` John McCabe
1996-08-13  0:00 Marin David Condic, 407.796.8997, M/S 731-93
1996-08-15  0:00 ` John McCabe
1996-08-13  0:00 Marin David Condic, 407.796.8997, M/S 731-93
1996-08-15  0:00 ` John McCabe
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