[hga]

What Azul is doing gets you about 3/4s that far with true SMP. They've got their Vega custom hardware, a new x86-64 software only version named Zing (http://www.azulsystems.com/products/zing) and they're pushing an open source version of the foundation (or more) of Zing through the Managed Runtime Initiative (http://news.ycombinator.com/item?id=1491653 and http://www.managedruntime.org/).

And they're listening to people and continuing to work on the latter, e.g. 3 days ago they updated the Linux source code releases. A complete SRPM, particularly for Fedora Core 12, and a kernel patch suitable for auditing and applying to the newer 2.6.34 containing the memory management half with remaining scheduling part to follow: http://lists.managedruntime.org/pipermail/dev/2010-July/0000....