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To: combjelly who wrote (236908)	7/23/2007 7:18:02 PM
From: Dan3	Respond to of 275872

Real world performance on real applications The Cray XT4(TM) supercomputer at the Department of Energy's ORNL, nicknamed Jaguar, is the world's most powerful system dedicated to open science. ORNL completed an upgrade to its existing Cray XT system earlier this year that more than doubled its performance to over 100 teraflops. When running the nuclear fusion application AORSA, the ORNL system achieved an impressive 74 percent of the system's theoretical peak, an efficiency level that usually can be attained only when performing "artificial" benchmark tests. The system has at least one more major upgrade in its future that will double its performance once again... ...Typical Linux clusters can't scale to these performance levels, especially on real-world applications," continued Ungaro. "And other custom systems are based on special microprocessors and packaging technologies that cannot cost-effectively be upgraded to take advantage of new technologies. The Cray XT design combines AMD Opteron(TM) processors and a custom Cray SeaStar(TM) network to provide unparalleled scalability and upgradeability. http://investors.cray.com/phoenix.zhtml?c=98390&p=irol-newsArticle&ID=1024176&highlight=