SystemG
This page is here for historical purposes only. SystemG is no longer a valid resource.
System G is a cluster supercomputer at Virginia Tech consisting of 324 Apple Inc.|Apple Mac Pro computers with a total of 2592 processing cores. It was finished in November 2008 and ranked 279 in that month's edition of TOP500, running at 16.78 Flops|teraflops and peaking at 22.94 teraflops. It now runs at a "sustained (Linpack) performance of 22.8 TFlops". [1] It transmits data between nodes over Gigabit Ethernet and 40Gb/s Infiniband.
Mac Pro Nodes
Each of the 324 Mac Pro machines contains two quad-core 2.8 GHz Xeon processors and 8 gigabytes (GB) of ram.
Namesake
System G's name stems from its homage to System X and to its focus on Green Computing. The cluster has thousands of power and thermal sensors to test high performance computing at low power requirements. It is the largest power-aware research system in the world. [2]