From: Florian Weimer <fw@deneb.enyo.de>
Subject: Re: How would Ariane 5 have behaved if overflow checking were notturned off?
Date: Sun, 20 Mar 2011 21:17:29 +0100
Date: 2011-03-20T21:17:29+01:00 [thread overview]
Message-ID: <87ei617die.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: op.vsniu2n9z25lew@macpro-eth1.krischik.com
* Martin Krischik:
> Am 20.03.2011, 14:07 Uhr, schrieb Florian Weimer <fw@deneb.enyo.de>:
>
>> * Martin Krischik:
>>
>>> Am 16.03.2011, 11:41 Uhr, schrieb robin <robin51@dodo.com.au>:
>>>
>>>> That was the major blunder that they made,
>>>> namely, treating a programming error as a hardware error.
>
>> If I take a piece of code, say from a Stackoverflow discussion, and
>> paste it into the project I'm working on, and it later crashes, I
>> doubt anyone would *not* consider this a programming error. Even if I
>> had a manager that told me to use that code, I would still consider it
>> my fault that I didn't integrate it properly.
>
> That would only be correct if a programmer would do the copy paste
> job. But it is my understanding that no programmers and testers had
> been involved in the Ariane 5 disaster. Just a deployer to install
> the software.
The report isn't totally clear on this point ("practically the same"
can mean anything when applied to software). If the SRI was literally
unchanged from Ariane 4, then you could indeed argue that this was a
deployment problem. But if it was changed beyond mere recompilation,
there was new development, and the component should definitely have
been tested in an up-to-date simulation. Apparently, that was the
plan, but then a test waiver was issued (in yet another committee
meeting).
next prev parent reply other threads:[~2011-03-20 20:17 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-14 15:49 How would Ariane 5 have behaved if overflow checking were not turned off? Elias Salomão Helou Neto
2011-03-14 16:17 ` KK6GM
2011-03-14 19:25 ` Yannick Duchêne (Hibou57)
2011-03-14 19:28 ` Vinzent Hoefler
2011-03-14 20:28 ` KK6GM
2011-03-15 4:02 ` Yannick Duchêne (Hibou57)
2011-03-15 4:53 ` Shark8
2011-03-14 18:29 ` Vinzent Hoefler
2011-03-16 10:41 ` How would Ariane 5 have behaved if overflow checking were notturned off? robin
2011-03-16 15:16 ` Simon Wright
2011-03-17 11:48 ` robin
2011-03-16 16:58 ` Martin Krischik
2011-03-16 23:39 ` How would Ariane 5 have behaved if overflow checking werenotturned off? robin
2011-03-17 18:48 ` Vinzent Hoefler
2011-03-18 12:06 ` Alex R. Mosteo
2011-03-18 21:15 ` How would Ariane 5 have behaved if overflow checking were not turned off? robin
2011-03-20 10:42 ` Vinzent Hoefler
2011-03-20 17:06 ` How would Ariane 5 have behaved if overflow checking werenotturned off? Martin Krischik
2011-03-20 17:11 ` Martin Krischik
2011-03-20 18:10 ` Dmitry A. Kazakov
2011-03-21 13:24 ` Leif Roar Moldskred
2011-03-20 13:07 ` How would Ariane 5 have behaved if overflow checking were notturned off? Florian Weimer
2011-03-20 17:00 ` Martin Krischik
2011-03-20 20:17 ` Florian Weimer [this message]
2011-03-20 20:37 ` Vinzent Hoefler
2011-03-20 20:14 ` Vinzent Hoefler
2011-03-16 18:20 ` Vinzent Hoefler
2011-03-16 18:29 ` Hyman Rosen
2011-03-16 18:55 ` Vinzent Hoefler
2011-03-16 19:40 ` KK6GM
2011-03-16 20:52 ` Hyman Rosen
2011-03-16 21:02 ` KK6GM
2011-03-16 21:09 ` Shark8
2011-03-16 21:13 ` Hyman Rosen
2011-03-16 21:35 ` Shark8
2011-03-16 22:27 ` Vinzent Hoefler
2011-03-16 21:04 ` Shark8
2011-03-16 21:10 ` Hyman Rosen
2011-03-16 21:27 ` KK6GM
2011-03-16 21:31 ` Shark8
2011-03-16 22:32 ` Vinzent Hoefler
2011-03-18 21:14 ` How would Ariane 5 have behaved if overflow checking were not turned off? robin
2011-03-16 23:46 ` How would Ariane 5 have behaved if overflow checking werenotturned off? robin
2011-03-17 0:26 ` Simon Wright
2011-03-17 11:01 ` Georg Bauhaus
2011-03-17 11:04 ` robin
2011-03-17 13:36 ` Niklas Holsti
2011-03-18 21:13 ` How would Ariane 5 have behaved if overflow checking were not turned off? robin
2011-03-19 10:12 ` Niklas Holsti
2011-03-17 22:51 ` How would Ariane 5 have behaved if overflow checking werenotturned off? Vinzent Hoefler
2011-03-18 21:13 ` How would Ariane 5 have behaved if overflow checking were not turned off? robin
2011-03-20 10:42 ` Vinzent Hoefler
2011-03-15 6:28 ` Stephen Leake
2011-03-15 17:32 ` Keith Thompson
2011-03-15 17:40 ` KK6GM
2011-03-15 19:44 ` Robert A Duff
2011-03-15 19:12 ` Florian Weimer
2011-03-15 19:45 ` KK6GM
2011-03-15 19:57 ` Vinzent Hoefler
2011-03-20 13:00 ` Florian Weimer
2011-03-20 20:13 ` Vinzent Hoefler
2011-03-15 19:42 ` John B. Matthews
2011-03-17 11:44 ` robin
2011-03-17 18:37 ` Vinzent Hoefler
2011-03-17 23:04 ` How would Ariane 5 have behaved if overflow checking were notturned off? robin
2011-03-18 15:55 ` Vinzent Hoefler
2011-03-17 21:37 ` How would Ariane 5 have behaved if overflow checking were not turned off? Vinzent Hoefler
2011-03-16 10:33 ` robin
2011-03-16 15:08 ` Simon Wright
2011-03-17 12:39 ` robin
2011-03-17 13:41 ` Georg Bauhaus
2011-03-17 23:34 ` How would Ariane 5 have behaved if overflow checking were notturned off? robin
2011-03-18 12:57 ` Hyman Rosen
2011-03-18 16:49 ` KK6GM
2011-03-18 17:18 ` Dmitry A. Kazakov
2011-03-19 17:55 ` Keith Thompson
2011-03-20 18:39 ` Robert A Duff
2011-03-17 18:43 ` How would Ariane 5 have behaved if overflow checking were not turned off? Vinzent Hoefler
2011-03-17 20:58 ` Simon Wright
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