I had, on my MacBook, the same issue described here: https://discussions.apple.com/thread/2695871 By attaching my external displays (either VGA or HDMI), I was able to use only the screen where the menu bar was located and the “Arrangement” window in the preferences pane of OSX resulted blank. Apple’s thread suggests that by deleting the general preference [...]
Disclaimer: I work for CleverScale: the company that developed the CDN federation tool hereby mentioned. This is the first of a series of “How-Tos” on how to use a CDN to accelerate the most diffused CMSes and Blog packages with the least impact possible. Joomla! is one of the most diffused CMS, it accounts for [...]
All professions nurture their specific type of idiots; IT is no exception. The particularly variegated diversity of idiots we meet in our professional life makes me wonder, every given time, if there could possibly be a limit to asininity. And every time I discover that no, there is none. I always have been comforted by [...]
Ceph is a distributed Object Storage and file system, it’s a distinctive piece of software in its own category for two reasons: It is developed in C++ (thus, offering speed and device-level integration) It provides a shared network block device driver offering POSIX access to Linux (the Kernel module is the subject of this post). [...]
For the last few weeks I have been evaluating Nimbula Director’s Beta, in the course of my experiments I had my confirmation that Director is a valuable piece of software and I started to think seriously to invest some more time on it. However, Nimbula is pretty secretive about their road-map; even their Beta release [...]
SARA, the Dutch National High Performance Computing (HPC) and e-Science Support Center, is organizing a “Hadoop Hackton“. The event is scheduled for December 7th 2010 to be held at their premises in Amsterdam (Science Park 121). The “hackathon” will be a hands-on introduction to Hadoop. Attendees are invited to come spend a day at SARA [...]
When Installing a Jobtracker of any Hadoop cluster, be careful on how these two files interact each other: /etc/hosts $HADOOP_HOME/conf/mapred-site.xml To make a long story short, this is very wrong: $>cat /etc/hosts 127.0.0.1 localhost tophat 192.168.3.60 tophat And, if you resolve to hostname in mapred-site.xml $>cat $HADOOP_HOME/conf/mapred-site.xml <!– Put site-specific property overrides in this file. [...]
Day 3 at the Amsterdam conference of the Open Group was dedicated to Cloud Computing. The date, October 20th 2010, coincided with that of the CloudCamp London #9, facing a difficult choice, I decided to explore the uncharted territory of the Open Group. My rationale was simple: I have never (yet) seen or read a [...]
