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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
That's what a Linux operating system can do. |
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#2
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
On 2020-08-02 3:19 p.m., Johnny wrote:
That's what a Linux operating system can do. Plus Large dollops of money, and engineering smarts. Rene |
#3
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
Johnny wrote:
That's what a Linux operating system can do. If I adopt the Linux operating system as my One True Jesus, what size Rocket will I have to buy ? :-) sudo apt install nerd-in-a-can sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer It could happen. Please and thank you, One True Jesus. Amen. By the way, I need to adjust the width of that scroll bar... Oh... What's that ? Get the source and what ? Why are you telling me this ??? Oh... Something about Stallman. I see. And that's the way it has to be ? Oh... sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer --recompile-from-source-and-fix-scrollbar Paul |
#4
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NASA astronauts splash down in SpaceX capsule as historicmission returns to Earth
On Sun, 02 Aug 2020 20:19:50 -0400
Paul wrote: Johnny wrote: That's what a Linux operating system can do. If I adopt the Linux operating system as my One True Jesus, what size Rocket will I have to buy ? :-) sudo apt install nerd-in-a-can sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer It could happen. Please and thank you, One True Jesus. Amen. By the way, I need to adjust the width of that scroll bar... Oh... What's that ? Get the source and what ? Why are you telling me this ??? Oh... Something about Stallman. I see. And that's the way it has to be ? Oh... sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer --recompile-from-source-and-fix-scrollbar Paul Your think that's funny? Would you trust Windows 10 to put you in orbit? |
#5
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
Johnny wrote:
On Sun, 02 Aug 2020 20:19:50 -0400 Paul wrote: Johnny wrote: That's what a Linux operating system can do. If I adopt the Linux operating system as my One True Jesus, what size Rocket will I have to buy ? :-) sudo apt install nerd-in-a-can sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer It could happen. Please and thank you, One True Jesus. Amen. By the way, I need to adjust the width of that scroll bar... Oh... What's that ? Get the source and what ? Why are you telling me this ??? Oh... Something about Stallman. I see. And that's the way it has to be ? Oh... sudo ./nerd-in-a-can --type-it-for-me --fix-my-computer --recompile-from-source-and-fix-scrollbar Paul Your think that's funny? Would you trust Windows 10 to put you in orbit? VXWorks is a good choice. RTOS are designed for real time things. Historically, NASA has put a good deal of effort into auditing and reviewing code. And the "less is more" principle applies. With an RTOS, there's a better chance you can do a line-by-line review (because the code base is smaller). Sure, you can strip Linux down to its underwear, but what exactly does that have to do with finding a replacement for Windows 10 ? I bet they could strip down Windows and make stuff out of it too. Again, what would be the point ? People don't exactly go gaga for Windows 10 IOT. Because they keep trying to make a traditional desktop out of it (which is what happened recently). The control method uses triple redundancy and majority voter logic. Presumably with a single point of failure in the component that passes the command to the rest of the craft. As there's no description of the downstream handling of information. https://samagame.com/en/this-is-the-...void-failures/ Then the unstated part is, are the three copies of "Linux" the same ? Or do they use diversity ? Do all the processes run RT ? Is scheduling basically disabled ? Something has to bound the delivery time of the (triplicate) calculations being done, and deciding when the third unit has taken too long (timeout). Again, this is hardly Linux, and it's merely a cheap and cheerful homemade VXWorks. I think a more important metric, would be how big the source tree and object is for this project. As they'd give you some idea whether it bears any resemblance to Linux at all. Or more a kernel in short-pants. They're probably doing it this way so from a corporate perspective they can be "self-certifying". They don't have to force VXWorks to write a document certifying the OS is suited to driving spacecraft. Because it's their own OS and now they own responsibility for reviewing it, line by line. Paul |
#6
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
On 2020-08-02 13:19, Johnny wrote:
That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. But, this is a Windows group that it suppose to help Windows uses. Most Windows users can not use Linux do to the lack of common applications. They are stuck with Windows. Please trying to keep it to helping Windows users and not to tech evangelism. And, yes, a jab here and there is acceptable. Lord knows I do it. -T |
#7
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
On Mon, 3 Aug 2020 02:15:24 -0700, T wrote:
On 2020-08-02 13:19, Johnny wrote: That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. Do you remember that the US Navy was cajoled into setting up a ship with Windows? Probably XP in those days. And how someone accidentally typed something silly and the whole system crashed bring the ship to a dead stop somewhere in the Persian Gulf or thereabouts. As I recall it took them half an hour to get underway again. But, this is a Windows group that it suppose to help Windows uses. Most Windows users can not use Linux do to the lack of common applications. They are stuck with Windows. Please trying to keep it to helping Windows users and not to tech evangelism. And, yes, a jab here and there is acceptable. Lord knows I do it. -T -- Regards, Eric Stevens |
#8
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
On 2020-08-03 03:14, Eric Stevens wrote:
On Mon, 3 Aug 2020 02:15:24 -0700, T wrote: On 2020-08-02 13:19, Johnny wrote: That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. Do you remember that the US Navy was cajoled into setting up a ship with Windows? Probably XP in those days. And how someone accidentally typed something silly and the whole system crashed bring the ship to a dead stop somewhere in the Persian Gulf or thereabouts. As I recall it took them half an hour to get underway again. Did not hear that one. I did hear that skylab purged itself of Windows I had a video years ago that I lost of on opera house that ran Windows to pop up the background graphics for the The Ring of the Nibelung. I was hysterical watching the opera stop as the giant BSOD popped up and then you got to watch Windows booting back up so the opera could continue. Wagner probably turned in his grave! But, this is a Windows group that it suppose to help Windows uses. Most Windows users can not use Linux do to the lack of common applications. They are stuck with Windows. Please trying to keep it to helping Windows users and not to tech evangelism. And, yes, a jab here and there is acceptable. Lord knows I do it. -T |
#9
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
Eric Stevens wrote:
On Mon, 3 Aug 2020 02:15:24 -0700, T wrote: On 2020-08-02 13:19, Johnny wrote: That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. Do you remember that the US Navy was cajoled into setting up a ship with Windows? Probably XP in those days. And how someone accidentally typed something silly and the whole system crashed bring the ship to a dead stop somewhere in the Persian Gulf or thereabouts. As I recall it took them half an hour to get underway again. Why did the US Military do a mass transition to Windows 10 then ? That was announced some time ago, with P.R. fanfare and so on. (That amounts to a custom version, with fees to match. No telemetry to Vortex and so on.) And like any organization, there's always a few things that don't get upgraded on the "drop-dead" date. It's more than OS choice. In this article, they mention the removal of touchscreens. They won't do that everywhere, just in spots where mistakes would be "critical". Like bumping into stuff. The Coke machine can still have a touchscreen. https://arstechnica.com/cars/2019/08...rs-should-too/ Paul |
#10
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
On 2020-08-03 06:29, Paul wrote:
WhyÂ*didÂ*theÂ*USÂ*MilitaryÂ*doÂ*aÂ*massÂ*transiti onÂ*toÂ*WindowsÂ*10Â*thenÂ*? Combat or non combat systems? There are a lot of paper pushers in the US Military. |
#11
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
T wrote:
On 2020-08-03 06:29, Paul wrote: Why did the US Military do a mass transition to Windows 10 then ? Combat or non combat systems? There are a lot of paper pushers in the US Military. This was a happy fluffy P.R. announcement. If the tank has an 8008, it continues to run on assembler and DIP switches. Common-sense predicts which ones get done first. A paper-pusher on a lease cycle is easy-pickins for that month-end progress report. The trouble you're having updating the Coke machine, won't be in the report. Sooner or later, someone will phone you up and ask for the Coke machine list. Paul |
#12
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
Paul wrote:
If I adopt the Linux operating system as my One True Jesus, You bent over backwards for that one. |
#13
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
On Mon, 3 Aug 2020 03:52:00 -0700, T wrote:
On 2020-08-03 03:14, Eric Stevens wrote: On Mon, 3 Aug 2020 02:15:24 -0700, T wrote: On 2020-08-02 13:19, Johnny wrote: That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. Do you remember that the US Navy was cajoled into setting up a ship with Windows? Probably XP in those days. And how someone accidentally typed something silly and the whole system crashed bring the ship to a dead stop somewhere in the Persian Gulf or thereabouts. As I recall it took them half an hour to get underway again. Did not hear that one. There are various versions of what happened. https://gcn.com/articles/1998/07/13/...the-water.aspx or https://tinyurl.com/yc6gaenf https://www.wired.com/1998/07/sunk-by-windows-nt/ Probably the most reliable of all https://medium.com/dataseries/when-s...n-4e53837f75b2 I did hear that skylab purged itself of Windows I had a video years ago that I lost of on opera house that ran Windows to pop up the background graphics for the The Ring of the Nibelung. I was hysterical watching the opera stop as the giant BSOD popped up and then you got to watch Windows booting back up so the opera could continue. Wagner probably turned in his grave! But, this is a Windows group that it suppose to help Windows uses. Most Windows users can not use Linux do to the lack of common applications. They are stuck with Windows. Please trying to keep it to helping Windows users and not to tech evangelism. And, yes, a jab here and there is acceptable. Lord knows I do it. -T -- Regards, Eric Stevens |
#14
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NASA astronauts splash down in SpaceX capsule as historic mission returns to Earth
On Mon, 03 Aug 2020 09:29:20 -0400, Paul
wrote: Eric Stevens wrote: On Mon, 3 Aug 2020 02:15:24 -0700, T wrote: On 2020-08-02 13:19, Johnny wrote: That's what a Linux operating system can do. Hi Johnny, I am a Linux shop. And yes you'd be a fool to trust Windows in space. Do you remember that the US Navy was cajoled into setting up a ship with Windows? Probably XP in those days. And how someone accidentally typed something silly and the whole system crashed bring the ship to a dead stop somewhere in the Persian Gulf or thereabouts. As I recall it took them half an hour to get underway again. Why did the US Military do a mass transition to Windows 10 then ? I don't know anything about it. It sounds as though the problem was really in the software. What is the current attitude of US Military to Ada? It used to be mandatory for mission-critical software. That was announced some time ago, with P.R. fanfare and so on. (That amounts to a custom version, with fees to match. No telemetry to Vortex and so on.) And like any organization, there's always a few things that don't get upgraded on the "drop-dead" date. It's more than OS choice. In this article, they mention the removal of touchscreens. They won't do that everywhere, just in spots where mistakes would be "critical". Like bumping into stuff. The Coke machine can still have a touchscreen. https://arstechnica.com/cars/2019/08...rs-should-too/ Paul -- Regards, Eric Stevens |
#15
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NASA astronauts splash down in SpaceX capsule as historic missionreturns to Earth
Eric Stevens wrote:
I don't know anything about it. It sounds as though the problem was really in the software. What is the current attitude of US Military to Ada? It used to be mandatory for mission-critical software. When organizations do stuff like this, it's so they have a "response to incident" story, the ability to get timely repairs from the manufacturer (Microsoft). The software that runs on the OS is mission-critical. The OS itself just has to stay tipped upright. Paul |
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