The University of Illinois’ new Turing Cluster is located in the Digital Computer Laboratory and consists of 640 Apple Xserves, each with two 2 GHz G5 processors and 4 GB of RAM, for a total of 1280 processors. The primary network connecting the cluster machines is a high-bandwidth, low-latency Myrinet network from Myricom. In addition, all machines in the cluster are also connected by a 100 Mbs switched, full-duplex Ethernet using switches from Cisco Systems, and there is a 1 Gbs link between the front-end array and the primary Cisco switch. The operating system for the Turing Cluster is Mac OS X Server, currently version 10.3.
“The cluster is housed in a newly renovated server room that can handle a cooling load of up to 550,000 BTU per hour and supports over 45 tons of cooling capacity using four distinct cooling systems — three of which can adequately support the cluster at any given time,” AppleInsider reports. “In the near future, the University hopes to be able to perform tests to rank the cluster’s computational ability, which, according to its specifications, could peak at nearly 10 teraflops.” AppleInsider also reports that the possibility exists that the University may consider “expanding the cluster to 1280 nodes, double its current size” in the future.
More info and photos here.