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upgrade, which uses dual-core processors, allowing two quad-processor nodes to fit on a node board. The processors are also upgraded to 1150 MHz. This upgrade almost triples the peak performance per board, but reduces the per-processor memory and interconnect bandwidth. X1 and X1E boards can be
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per processor. Air-cooled models are available with up to 64 processors. Liquid-cooled systems scale to a theoretical maximum of 4096 processors, comprising 1024 shared-memory
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The X1 uses a 1.2 ns (800 MHz) clock cycle, and eight-wide vector pipes in MSP mode, offering a peak speed of 12.8
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architectures into a single machine. The X1 shares the multistreaming processors, vector caches, and
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design of the SV1, the highly scalable distributed memory design of the T3E, and the high
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The X1 can be programmed either with widely used message passing software like
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network, in 32 frames. Such a system would supply a peak speed of 50
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93:. The largest unclassified X1 system was the 512-processor system at
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since 2003. The X1 is often described as the unification of the
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The X1 is notable for its development being partly funded by
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NSA Secures Future of Cray SV2 With 5-Year
Funding Deal
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186:Cray Inc. 10k-filing for December 31, 2005
135:found on prior-generation Cray machines.
515:This supercomputer-related article is a
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131:operating system than it does with the
108:, or with shared-memory languages like
576:Computer-related introductions in 2003
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16:A supercomputer made by Cray, Inc.
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143:combined within the same system.
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85:connected in a two-dimensional
74:and liquid cooling of the T90.
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95:Oak Ridge National Laboratory
27:Oak Ridge National Laboratory
519:. You can help Knowledge by
25:A Cray X1E supercomputer at
138:In 2005, Cray released the
124:which shares more with the
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368:Cray Research Superservers
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148:United States Government
47:manufactured and sold by
38:non-uniform memory access
152:National Security Agency
112:programming language or
581:Computer hardware stubs
211:Cray X1E at top500.org
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571:Vector supercomputers
154:(under the code name
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206:Cray Legacy Products
342:Cray Computer Corp.
201:ORNL X1 evaluation
110:Unified Parallel C
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116:. The X1 runs an
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521:expanding it
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287:Cray Y-MP EL
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461:Cray CX1000
385:Cray CS6400
560:Categories
406:Cray MTA-2
354:Cray-3/SSS
162:References
486:Cray XC50
481:Cray XC40
476:Cray XC30
401:Cray SX-6
394:Cray Inc.
380:Cray S-MP
299:Cray EL90
277:Cray Y-MP
267:Cray X-MP
249:computers
122:UNICOS/mp
91:teraflops
79:gigaflops
72:bandwidth
49:Cray Inc.
496:Urika-GD
491:Urika-XA
471:Cray XK7
466:Cray XK6
456:Cray XE6
451:Cray XT6
446:Cray CX1
441:Cray XT5
436:Cray XMT
431:Cray XT4
426:Cray XD1
421:Cray XT3
375:Cray APP
324:Cray SV1
319:Cray T3E
314:Cray T90
309:Cray J90
304:Cray T3D
294:Cray C90
282:Cray XMS
61:Cray T3E
57:Cray SV1
53:Cray T90
416:Cray X1
120:called
34:Cray X1
359:Cray-4
349:Cray-3
272:Cray-2
262:Cray-1
133:UNICOS
69:memory
59:, and
87:torus
83:nodes
36:is a
517:stub
247:Cray
129:IRIX
104:and
65:CMOS
32:The
156:SV2
150:'s
140:X1E
126:SGI
106:PVM
102:MPI
562::
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239:e
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