Apr 7, 2014 The past year has been an exciting one at Research Computing (RC). We increased our computing power by 28,000 CPUs, rolled out a new queue management system SLURM, consolidated our data centers to reduce energy costs and improve storage capacity, partnered with WiseTek to sustainably dispose of old equipment, spun up some GPU farms, and welcomed five…
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The cloud’s silver lining
The cloud. Everyone is talking about it even if they aren't quite sure what it is. And almost everyone is using it. To start, let's get that pesky definition out of the way. The cloud or cloud computing refers to the storing and accessing of data and programs over the Internet instead of on the hard drive of a personal computer.…
How big is Big Data?
If you have been tuned-in to tech talk over the last couple years there have been certain buzzwords that have been making their way into the common vernacular, big data being one of them. But with any buzzword, the meaning behind it can often be murky as can the understanding of that meaning. In 2012, Citrix, the software giant, commissioned…
Of Nobel Prizes…
Wonderful news today, fabulous day to support great science with great colleagues! Congrats Martin! A great day to be in the support of amazing computing resources here @harvard http://t.co/sfMAjO42Xp #hpc — James Cuff (@jamesdotcuff) October 9, 2013 Reminds me of my first few days here at Harvard, (email below) and my rather epic faux pas with messing up how to…
The management demands demand management!
Today was one of those hot days here in New England. We set power rates based on load on high days randomly sampled. They call this stuff "demand management" We use quite a lot of power here in our shop for lots of computers, so this here manager demanded some management of the power loads! Hehehe. Fortunately we were able…
Of benching a wicked fast storage array with a very dodgy tcsh script…
Testing our new secret filesystem... no caching or silly business going on here, all raw spindles and extremely suspect but reproducible fork bombs courtesy of tcsh. Where hosts contains 20 machines... [root@localhost jcuff]# foreach h (`cat hosts`) foreach? ssh $h /mnt/share/jcuff/dd.sh $h & foreach? end And where dd.sh is simply a 16 way fork bomb: [root@localhost jcuff]# cat dd.sh #!/bin/tcsh foreach h…
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