Archive for December, 2009
Cluster user training
On the same trip to India, I found myself in the position of delivering a training session to a room with incredibly varied backgrounds and skill levels. Some folks had never edited a file on the Unix command line before. Others just wanted to know where MPICH was installed. This set of slides goes from [...]
Inquiry Cluster Admin Slides
I recently took a trip to Kolkata, India to train users and administrators of an Apple / Inquiry compute cluster there. The slides I developed for that trip may be of general interest, and so I’m sharing them here. The intent of these slides is to provide an overview of the administrative tools and systems [...]
Setting up LOM on an Apple XServe from the command line
Apple provides a GUI for setting up the IP address and authentication information on the LOM. The problem, for me, with using a GUI for something like this is that it’s nearly impossible to script and automate. When I’m setting up a cluster of even a dozen nodes, going through a remote desktop to a GUI becomes intolerable in a hurry. This post shares my recipe for getting the LOM ports on the network and accessible, using only the command line.
Great talk on hadoop, bioinformatics and the cloud
Just passing along the URL to a pretty informative video showing Deepak Singh’s talk at a recent NYC area Hadoop World conference. The presentation contains quite a bit of bioinformatics/IT background that some readers here may already know but the Hadoop and large-scale dataset processing content is really quite interesting. If you work at the [...]
Updated WikiLIMS Presentation
Download the 11-14-2009 version of the WikiLIMS Overview presentation by clicking on the graphic below:
Instead of spending 20 minutes to format an ext3 volume every time you need one, you could just snapshot a ...
Let me add a few remarks about Ext3 as well.
The reason we usually recommend Ext3 instead of XFS is because ...
I'm using these slides to tune SGE 6.2 @ European Space Agency, thanks a lot! 
Great post.
Can you also try our native scale out NFS protocol? Next 3.1 release of Gluster will include it ...
So far my mental architecture is shaping up to be something like this:
Use the ephemeral disks for scratch space and ...
This shows that on-demand HPC still has a ways to go, it is very unfortunate that only ext3 is supported ...
We have had sge62u3 working fine in a 10.5 cluster using cron to startup the sge_execd process on clients. Trying ...
Instead of increasing your disk image size, you could have decreased the memory by writing a very short C program ...