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Los Alamos, NM. , U.S.A. 



LANL COMPUTING AND COMMUNICATIONS DIVISION 

 Los Alamos National Laboratory (LANL) 

 U.S. Dept. of Energy 



"Big Science" Descriptor ; Supercomputers mainly (about 70 percent) for 

 nuclear weapons research; about 30 percent for a number of other 

 , research areas. 



Description of Facility/Instrument : Four Cray 1 machines and two Cray 

 XMPs. The entire Computing and Communications Division serves 

 about 5000 users in LANL and about 2000 remote users. The largest 

 outside user is the Defense Nuclear Agency. In addition, the 

 facility is accessed by Dept. of Energy contractors and other 

 Federal agencies. 



Date of Construction ; The Division acquired its first Cray 1 In Novem- 

 ber 1976. 



Construction Cost ; 1984 $$ : $60 million for the six Cray machines 



Present International Cooperation 



Nationallty(8) of Ownership : U.S. 



Nationallty(s) of Operational Funding ; U.S. 



Nationallty(8) of Management Staff ; U.S. 



Nationallty(8) of Researchers ; The facility is not used directly 

 by foreign researchers. However, it is possible to get dial- 

 up access from anywhere in the world to two unclassified 

 Cray 1 machines. 



