Long boot time
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
Anxious to see how the landing goes. I've seen specials on the tube about how it will land and some of the experiments to be conducted and it will be awesome to see it work as expected.
VS2010/Atmel Studio 6.0 ToDo Manager Extension
Version 3.0 now available. There is no place like 127.0.0.1 -
They are rebooting the rover, not the rocket/capsule that carry it.
Watched code never compiles.
-
Anxious to see how the landing goes. I've seen specials on the tube about how it will land and some of the experiments to be conducted and it will be awesome to see it work as expected.
VS2010/Atmel Studio 6.0 ToDo Manager Extension
Version 3.0 now available. There is no place like 127.0.0.1I've been waiting for almost exactly 3 years to see my name land on the surface of Mars: http://sdrv.ms/NyUk81[^] I'm really looking forward to the footage they get from their MARDI camera too: http://msl-scicorner.jpl.nasa.gov/Instruments/MARDI/[^]
Quote:
The Mars Descent Imager (MARDI) is a fixed-focus color camera fixed-body-mounted to the fore-port-side of the MSL rover, even with the bottom of the rover chassis. The optical axis points in the +Z direction (toward the ground in the rover coordinate system). The camera will take 1600 × 1200 pixel images at ~5 frames per second throughout the period of time between heatshield separation and touchdown plus a few seconds (a period of about two minutes). The rover software issues a “start imaging” command and the camera operates autonomously until the rover software determines that landing has succeeded and issues a “stop imaging” command. The data are written into permanent flash memory in real time during acquisition for later transmission.
Be The Noise
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
-
I've been waiting for almost exactly 3 years to see my name land on the surface of Mars: http://sdrv.ms/NyUk81[^] I'm really looking forward to the footage they get from their MARDI camera too: http://msl-scicorner.jpl.nasa.gov/Instruments/MARDI/[^]
Quote:
The Mars Descent Imager (MARDI) is a fixed-focus color camera fixed-body-mounted to the fore-port-side of the MSL rover, even with the bottom of the rover chassis. The optical axis points in the +Z direction (toward the ground in the rover coordinate system). The camera will take 1600 × 1200 pixel images at ~5 frames per second throughout the period of time between heatshield separation and touchdown plus a few seconds (a period of about two minutes). The rover software issues a “start imaging” command and the camera operates autonomously until the rover software determines that landing has succeeded and issues a “stop imaging” command. The data are written into permanent flash memory in real time during acquisition for later transmission.
Be The Noise
Awesome congrats
VS2010/Atmel Studio 6.0 ToDo Manager Extension
Version 3.0 now available. There is no place like 127.0.0.1 -
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
I read it as the computers are rebooted every four days and not that it's a four day reboot.
Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
Karl Sanford wrote:
Wow, a four day reboot process?
It's the lack of gravity that causes bits to flow slower. /ravi
My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com
-
Wait...why are they _re_booting it? Why was it booted in the first place if it's not doing anything yet?
Service Pack 1 finally completed installation? :laugh:
Steve _________________ I C(++) therefore I am
-
wizardzz wrote:
...my bad.
Your bad what?
Michael Martin Australia "I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
-
"Have you tried turning it off and back on again?" "No, I haven't. See you in 4 days." Seriously though, I don't like the idea of rebooting billion dollar pieces of equipment as they are flying through space at 13,000 mph towards a very large, hard object.
-
I read it as the computers are rebooted every four days and not that it's a four day reboot.
Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett
Are these mutually exclusive? ;P
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
I suspect the verification from the DRM server located on earth that is taking so long. It's not helping if they're down for maintenance, national holiday, or just lazy technicians... ;P
-
Wait...why are they _re_booting it? Why was it booted in the first place if it's not doing anything yet?
because of the low temperature on space. there's a chance that the rover freezes (literally) if they send it turned off. there's also hundreds of verification's to be made in the path, and if they need to update the software, it needs to be turned on. they have little to none margin to error, and a booted computer has more chances to be working than a computer that waits until the last day of flight to be booted. they can also be using the rover communications system to contact the spacecraft, there's no sense in using another remote control system in a one-trip spacecraft... there can be hundreds of explanations, but as i don't work for nasa (sadly :(( ) i can only speculate.
I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
It doesn't say rebooting takes four days. It says multiple redundant systems are rebooted over a four-day period. So I guess they reboot the first instance, then do a lot of remote checks (and communication to/from the craft takes a while). Then when they're happy they reboot the next instance. Pay attention at the back, please! :doh:
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
-
http://www.informationweek.com/news/government/mobile/240003883[^]
Quote:
The computers on NASA's Curiosity rover are being rebooted as the spacecraft approaches Mars for its Aug. 5 landing. The process, which occurs over four days, resets Curiosity's primary and backup systems to their default state in advance of a landing sequence that leaves little room for error.
Wow, a four day reboot process? :wtf: and I hear people complaining about 5 minutes :cool:
Be The Noise
It's not quite as slow as curiosity; but we've got some equipment that IIRC takes 2 working days from power on to ready to use: 24 hours to reach thermal equilibrium from a cold start, and a full working day afterwards to run self calibration/test procedures.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies. -- Sarah Hoyt
-
It's not quite as slow as curiosity; but we've got some equipment that IIRC takes 2 working days from power on to ready to use: 24 hours to reach thermal equilibrium from a cold start, and a full working day afterwards to run self calibration/test procedures.
Did you ever see history portrayed as an old man with a wise brow and pulseless heart, waging all things in the balance of reason? Is not rather the genius of history like an eternal, imploring maiden, full of fire, with a burning heart and flaming soul, humanly warm and humanly beautiful? --Zachris Topelius Training a telescope on one’s own belly button will only reveal lint. You like that? You go right on staring at it. I prefer looking at galaxies. -- Sarah Hoyt
Here on earth, my sister owns a pizza shop with a charcoal-fired brick oven that runs at about 900 degrees F. When it is shut down for the once-in-three-years-family-vacation, it takes almost two days to coax it back to operating temperature... very slowly, so as to not crack the brickwork!
-
"Have you tried turning it off and back on again?" "No, I haven't. See you in 4 days." Seriously though, I don't like the idea of rebooting billion dollar pieces of equipment as they are flying through space at 13,000 mph towards a very large, hard object.
wizardzz wrote:
Seriously though, I don't like the idea of rebooting billion dollar pieces of equipment as they are flying through space at 13,000 mph towards a very large, hard object.
Its become standard practice to launch with the "firmware" not yet complete. Its uploaded enroute.. and then updated as necessary once the rover's on the ground. Technically, even landing code could be uploaded enroute. Its not like it can be tested against anything other than a simulator prior to being used anyway :)
We can program with only 1's, but if all you've got are zeros, you've got nothing.
-
wizardzz wrote:
Seriously though, I don't like the idea of rebooting billion dollar pieces of equipment as they are flying through space at 13,000 mph towards a very large, hard object.
Its become standard practice to launch with the "firmware" not yet complete. Its uploaded enroute.. and then updated as necessary once the rover's on the ground. Technically, even landing code could be uploaded enroute. Its not like it can be tested against anything other than a simulator prior to being used anyway :)
We can program with only 1's, but if all you've got are zeros, you've got nothing.
patbob wrote:
Technically, even landing code could be uploaded enroute. Its not like it can be tested against anything other than a simulator prior to being used anyway
Correct me if I'm wrong, as I've done very little research as to the testing they did, but isn't it quite simple to test the landing software? I mean, most of the cost was in getting there and the development of the equipment to be used. How much more would it cost to build a dummy rover that contains all the landing gear, etc, and include equal weighted dummy equipment, maybe a few accelerometers?
-
patbob wrote:
Technically, even landing code could be uploaded enroute. Its not like it can be tested against anything other than a simulator prior to being used anyway
Correct me if I'm wrong, as I've done very little research as to the testing they did, but isn't it quite simple to test the landing software? I mean, most of the cost was in getting there and the development of the equipment to be used. How much more would it cost to build a dummy rover that contains all the landing gear, etc, and include equal weighted dummy equipment, maybe a few accelerometers?
