Monthly Archives: May 2009

Erlang Units…

Per Wikipedia, an Erlang Unit is: “The erlang (symbol E[1]) as a dimensionless unit is used in telephony as a statistical measure of offered load. It is named after the Danish telephone engineer A. K. Erlang, the originator of traffic … Continue reading →

Posted in Models, Sizing, Tuning | Tagged , | Comments Off

[CheapHA-HPC] Part 1 – First Steps

This is part 1 in a multipart adventure into cost-efficient supercomputing and high availability. By now you’ve probably heard of Beowulf Linux clusters, HPC clusters made from PlayStations, the monsters listed at http://www.top500.org/, Amazon’s EC2/S3, and the like. Well, what … Continue reading →

Posted in J2EE, Java, Legacy, Linux, Models, Perl, Scripts, Sizing, Tuning, UNIX, [CheapHA-HPC] | 2 Comments