Kresten Krab Thorup introduces Erjang, an Erlang VM based on the JVM, disclosing some of its internal workings and challenges building it.
Hosted by Erik Meijer, who runs the Cloud Programmability Team at Microsoft, the panelists answer questions on C/C++ and Java performance, contrasting the virtues of native vs. managed code.
Brandon Benvie introduces Continuum, what it does, how it works, and why it's useful. Continuum maintains compatibility with all popularly used JS engines in use today (IE8, modern browsers, Node.js).
Alex Gaynor explains how he solved the usual Ruby VM speed problems with Topaz, a high performance VM built on the same technologies that power PyPy.
Keith Adams shares details on building HHVM, a PHP VM built by Facebook, along with lessons learned doing it and tuning it for high performance.