Author Archives: Chris Cooke

About Chris Cooke

Chris Cooke is a Computing Officer in the School of Informatics at the University of Edinburgh. He works in the Managed Platforms Unit and rides a very large bicycle.

More sleep for DICE desktops

If you normally stay logged in to DICE overnight, read on. From Wednesday night (29 May) DICE desktops will be more likely to fall asleep. For some years our DICE desktops have slept when nobody was logged in and the … Continue reading

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Sleep graphed

We want to save energy, so we try to ensure that DICE computers sleep when idle. The graph below shows how many DICE desktops were asleep during each hour of a recent week. It was produced by David Sterratt, and … Continue reading

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Wake On LAN is now available

We now have a web page which can wake sleeping computers. It should wake most of our desktop machines (though not HP 7900 computers – see below). You can find it at wake.inf.ed.ac.uk. It seems a bad idea to let … Continue reading

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Macs in Informatics – the sequel

Back in August in a post entitled Macs in Informatics I asked for views on, well, Macs in Informatics, but specifically on configuring them to access DICE services, and whether we should look at trying to provide some sort of … Continue reading

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Macs in Informatics

If you use a Mac, this post is for you. I’m asking for the opinions of Mac users. There seem to be a lot of Macs in Informatics. Macs can be configured to access DICE services – for example AFS, … Continue reading

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Automatic Sleep for DICE

Over the next few weeks, SL6 DICE desktop computers will start falling asleep when idle. The aim is to make them use less energy. At present most DICE desktops run F13 or SL5 DICE. These computers will not sleep any … Continue reading

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Thursday is Software Day

Here’s some news: we’ve moved the DICE weekly release from Thursday to Wednesday afternoons. If you’re already tempted to move on, let me explain. Most of the configuration of a DICE machine – what software is installed, who can login, … Continue reading

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The Hadoop and Beowulf clusters have temporarily shrunk

We’ve turned off some of the machines which normally form part of the DICE Beowulf and Hadoop clusters. At the moment the Forum’s server room is running with only one of its UPSes rather than the normal two, so we’ve … Continue reading

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A short post about sleep

This post is mainly just to announce that the student lab machines can now be woken from sleep in the way one might reasonably expect: with a key press or mouse click. Previously they could only be woken by pressing … Continue reading

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