Announcing Upgrade of Cray XD1

The Arctic Region Supercomputing Center (ARSC) announces new upgrades to Nelchina, a six-chasis Cray XD1 cluster.

During the past two months, ARSC and Cray staff have been busy adding three more chassis to the Cray XD1, Nelchina.  Each of the new chassis has 6 nodes with 2 dual core AMD Opteron processors per node.

•   6-  nodes with 2 AMD Opteron 250 Processors (Single Core) with FPGAs
•   12- nodes with 2 AMD Opteron 250 Processors (Single Core)
•   18- nodes with 2 AMD Opteron 280 Processors (Dual Core)

The upgrade also includes a change to the fat tree network topology, which improves performance for all-to-one, one-to-all, or all-to-all communications by providing a direct link between each node.

About ARSC

The Arctic Region Supercomputing Center, located on the campus of the University of Alaska Fairbanks, supports computational research in science and engineering with emphasis on high latitudes and the Arctic. The center provides high performance computational, visualization, networking and data storage resources for researchers within the University of Alaska, other academic institutions, the Department of Defense and other government agencies. ARSC is an Allocated Distributed Center in the Department of Defense's High Performance Computing Modernization Program. For additional information about ARSC, go to www.arsc.edu.

CONTACT: Jenn Wagaman, ARSC Public Affairs Coordinator, (907) 450-8662,