SCIENCE

LIVERMORE, CA -- National Nuclear Security Administration (NNSA) head General John A. Gordon joins Laboratory and IBM management to dedicate the massive IBM ASCI White supercomputer on August 15th . The Top500 list leader boasts 8,192 processors that perform 12.3 trillion operations per second. ASCI White Dedication Fact Sheet HARDWARE -- 8,192 commercial, off-the-shelf IBM Power-3-II processors. -- 12.3 T-flops (trillion floating operations per second) = every man, woman, child in the world adding 2,000 numbers/second non-stop 24/7. -- 28 Moving vans for delivery. -- $110 million contracted cost. -- Total memory: 4 Terabytes = 4,000 Gigabytes. -- Total local disk: 10 Terabytes = 10,000 Gigabytes of local disk among the nodes. -- Total global disk: 150 Terabytes = 150,000 Gigabytes. -- Rotating storage memory = 300,000,000 books. -- Livermore's original, room-sized 1952 Univac, had a memory equivalent of only 1,000 words, or less than four text pages. -- Rated fastest supercomputer in the world June 21, 2001 by TOP500. COMPUTER ROOM -- The cooling capacity = 2,295 tons: three 675-ton and one 270-ton chillers, which could cool 765 homes. -- There are 31 Computer Room Air Conditioners (CRACs). Each CRAC is 40 tons supplying 20,000 cubic feet per minute (cfm) of cool air. This delivers 620,000 cfm in the computer room. -- Total power supply available = 10.35MW delivered through a dedicated adjacent electric sub-station and transformers. -- 20,000 square foot computer room is longer than two NBA courts. -- High-tech LCD window bays allow visitors to view the computer room during selected activities, but turn opaque at the flip of a switch for normal classified operations. -- Grid flooring, normally 6"-12" deep, is nearly a meter deep, housing 20" OD cooling pipes and 49.3, miles of cable, including 45 miles of data cable. Visit the LLNL Website at www.llnl.gov/PAO