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Supercomputing

Submission + - LHC Remote Ops at Fermilab uses Linux/Firefox (fnal.gov)

tehaynes writes: While passing through Chicago today, I decided to pay a visit to Fermilab to see what has changed since the initial run of the LHC. You should always expect to be mystified, surprised or enlightened when ever there. I was pleasantly surprised to see the LHC Remote Operations Center at Fermilab prominently placed on the first floor of Wilson Hall where the public can watch everyone at work. What shocked me, and I am not sure why, was that everyone of the multitude of screens visible appeared to be running Linux (actually SLF — Scientific Linux Fermi) and using Firefox to display operational info about the LHC. Check out the Computing section of the above link. Not a hint of Microsoft in the whole room.

Oh, they also discovered a new particle at Fermilab as well. The Omega-sub-b.

Comment console and scripts (Score 1) 215

Most out-of-band/backup management used by the likes of AT&T and Sprint use and serial multiplexer with a phone line. You would hook this to the console port of the computer and/or the 'lights out' card. There would also be a APC MasterPower PDU (power distribution unit) that allows turning outlets on or off including sequencing and timer events. These PDU have a serial port that would connect to the same serial multiplexer. This gets you a command line, BIOS level access and hard booting ability. Of course, you can script or command almost anything on windows using the WSH (Windows service host) or on *nix using your favorite shell. For those trickier 3rd party apps you can use software like AutoIt to command the GUI from the command line. For easy access to services, registry, tasks, etc you would use PSTools by SysInternals now maintained by Microsoft.

All of the above works very well over intermittent connections as it was designed for dial-on-demand connections. For complete control over the GUI (in windows) you can use the highspeed connection with the built in RDP or terminal services. RDP will give you the 'monitor' view like you were sitting there and TS will give you a separate login with your own session. I prefer RAdmin for an RDP replacement as it has better security (logins can be completly seperate from the OS users or you can use the same windows user accounts, but providing more fine grain control over rights), it can be configured for slow links (I have used it on 42k connections by setting screen updates to 5/sec all though this is somewhat painful), it is cheap (about $10 for each client/server pair), and it has very useful file management tools (bypassing the need for telnet/ftp and even the GUI) as well as chat tools for when multiple people are working on the computer at the same time.

i think that about covers it.

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