AEI servers move

Bernd Machenschalk
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Topic 197283

Today (and possibly tomorrow) we will move the Einstein@Home servers located at the AEI to a new rack. You may experience shortage of FGRP or BRP tasks (a few h max) or short, transient problems in up- or downloading tasks (< 1h), but nothing that the clients won't recover from automatically.

BM

BM

ExtraTerrestrial Apes
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AEI servers move

Beam'em over, Scotty!

MrS

Scanning for our furry friends since Jan 2002

Bernd Machenschalk
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"We have normality. I repeat,

"We have normality. I repeat, we have normality. Anything you still can't cope with is therefore your own problem." (HHTTG)

The main servers have been moved and are up and running again.

BM

BM

Neil Newell
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I noticed a bunch of messages

I noticed a bunch of messages in the log about uploads being told to back off for a while; apart from that it was completely seamless here. Very smooth!

David S
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RE: "We have normality. I

Quote:

"We have normality. I repeat, we have normality. Anything you still can't cope with is therefore your own problem." (HHTTG)

The main servers have been moved and are up and running again.

BM


Big :-)

David

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Patiently waiting for the asteroid with my name on it.

Bernd Machenschalk
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For the curious a few details

For the curious a few details of the move:

The Einstein@Home servers that previously were scattered across a couple of racks in the Atlas cluster room have been collected in a single rack where they now all share a couple of useful features:

- a dedicated switch that somewhat decouples them from possible problems or limitations in the Atlas cluster network

- power from two completely separated UPS systems

- automatic doors: in case of a failure of the rack's liquid cooling system the doors will open and the servers will be cooled by the environmental air

Yesterday we moved only the server machines. There are a couple of other (build & test) machines that will be collected in nearby racks in the next few days, while we rearrange other machines for the extension of the Atlas cluster.

Ironically, two machines (Mac Pros) named "Trillian" and "Eddie" will be among the last to reach their final places.

BM

BM

Mike Hewson
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RE: Ironically, two

Quote:
Ironically, two machines (Mac Pros) named "Trillian" and "Eddie" will be among the last to reach their final places.

... probably. :-)

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

Logforme
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RE: Ironically, two

Quote:
Ironically, two machines (Mac Pros) named "Trillian" and "Eddie" will be among the last to reach their final places.


Thanks to the wonderful people of Sirius Cybernetics Corporation no doubt :)

Bernd Machenschalk
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RE: Wouldn't mind knowing

Quote:
Wouldn't mind knowing who named the Computer Brothers, Trillions and Eddie and why they're late.

Eddie and Trillian, together with Marvin (a G4 MacMini located elsewhere), are the last remaining machines that I bought when I was working at the AEI in Potsdam and named after characters from "The Hithhikers Guide to the Galaxy", and took with me when I moved to AEI Hannover.

Newer machines that were bought in Hannover are named after characters from the British sitcom "The IT crowd" (Moss, Roy, Denholm, Douglas, Richmond ...), or from the Pixar movie "Toy story" (well, actually after the codename of the version of Debian that they run, which in turn is taken from Toy Story).

These machines are used to build and test the Einstein@Home applications on different hardware and OS versions, and are not used continuously. So we are much more flexible when we have to move them, which usually leads to these being moved last.

BM

BM

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