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- Cray_XT3 abstract "The Cray XT3 is a distributed memory massively parallel MIMD supercomputer designed by Cray Inc. with Sandia National Laboratories under the codename Red Storm. Cray turned the design into a commercial product in 2004. The XT3 derives much of its architecture from the previous Cray T3E system, and also from the Intel ASCI Red supercomputer. The XT3 consists of between 192 and 32,768 processing elements (PEs), where each PE comprises a 2.4 or 2.6 GHz AMD Opteron processor with up to two cores, a custom "SeaStar" communications chip, and between 1 and 8 GB of RAM. The PowerPC 440 based SeaStar device provides a 6.4 gigabyte per second connection to the processor across HyperTransport, as well as six 8-gigabyte per second links to neighboring PEs. The PEs are arranged in a 3-dimensional torus topology, with 96 PEs in each cabinet. The XT3 runs an operating system called UNICOS/lc that partitions the machine into three sections, the largest comprising the Compute nodes, and two smaller sections for Service nodes and IO nodes. In UNICOS/lc 1.x, the Compute PEs run a Sandia developed microkernel called Catamount, which is descended from the SUNMOS OS of the Intel Paragon; in UNICOS/lc 2.0, Catamount was replaced by a specially tuned version of Linux called Compute Node Linux (CNL). Service and IO PEs run the full version of SuSE Linux and are used for interactive logins, systems management, application compiling and job launch. I/O PEs use physically distinct hardware, in that the node boards include PCI-X slots for connections to Ethernet and Fibre Channel networks. Though the performance of each XT3 model will vary with the speed and number of processors installed, the November 2007 Top500 results for the Red Storm machine, the largest XT3 machine installed at Sandia, measured 102.7 teraflops on the Linpack benchmark, placing it at #6 on the list. After upgrades in 2008 to install some XT4 nodes with quad-core Opterons, Red Storm achieved 248 teraflops to place at #9 on the November 2008 Top500. The architecture was superseded in 2006 by the Cray XT4.".
- Cray_XT3 thumbnail Shaguar.jpg?width=300.
- Cray_XT3 wikiPageExternalLink UH-PR-11-04-2.html.
- Cray_XT3 wikiPageExternalLink Cray_XT3_Datasheet.pdf.
- Cray_XT3 wikiPageExternalLink cray_inc_xt3.
- Cray_XT3 wikiPageID "6872608".
- Cray_XT3 wikiPageLength "2946".
- Cray_XT3 wikiPageOutDegree "36".
- Cray_XT3 wikiPageRevisionID "683731147".
- Cray_XT3 wikiPageWikiLink AMD.
- Cray_XT3 wikiPageWikiLink ASCI_Red.
- Cray_XT3 wikiPageWikiLink Advanced_Micro_Devices.
- Cray_XT3 wikiPageWikiLink Category:Cray_products.
- Cray_XT3 wikiPageWikiLink Category:Supercomputers.
- Cray_XT3 wikiPageWikiLink Compute_Node_Linux.
- Cray_XT3 wikiPageWikiLink Cray.
- Cray_XT3 wikiPageWikiLink Cray_T3E.
- Cray_XT3 wikiPageWikiLink Cray_XT4.
- Cray_XT3 wikiPageWikiLink Dual-core.
- Cray_XT3 wikiPageWikiLink Ethernet.
- Cray_XT3 wikiPageWikiLink FLOPS.
- Cray_XT3 wikiPageWikiLink Fibre_Channel.
- Cray_XT3 wikiPageWikiLink File:Shaguar.jpg.
- Cray_XT3 wikiPageWikiLink HyperTransport.
- Cray_XT3 wikiPageWikiLink Intel.
- Cray_XT3 wikiPageWikiLink Intel_Paragon.
- Cray_XT3 wikiPageWikiLink Linux.
- Cray_XT3 wikiPageWikiLink MIMD.
- Cray_XT3 wikiPageWikiLink Massively_parallel.
- Cray_XT3 wikiPageWikiLink Massively_parallel_(computing).
- Cray_XT3 wikiPageWikiLink Microkernel.
- Cray_XT3 wikiPageWikiLink Multi-core_processor.
- Cray_XT3 wikiPageWikiLink Operating_system.
- Cray_XT3 wikiPageWikiLink Opteron.
- Cray_XT3 wikiPageWikiLink PCI-X.
- Cray_XT3 wikiPageWikiLink PowerPC_400.
- Cray_XT3 wikiPageWikiLink Quad-core.
- Cray_XT3 wikiPageWikiLink Random-access_memory.
- Cray_XT3 wikiPageWikiLink Red_Storm_(computing).
- Cray_XT3 wikiPageWikiLink SUNMOS.
- Cray_XT3 wikiPageWikiLink SUSE_Linux_distributions.
- Cray_XT3 wikiPageWikiLink Sandia_National_Laboratories.
- Cray_XT3 wikiPageWikiLink SuSE.
- Cray_XT3 wikiPageWikiLink Supercomputer.
- Cray_XT3 wikiPageWikiLink TOP500.
- Cray_XT3 wikiPageWikiLink Teraflops.
- Cray_XT3 wikiPageWikiLink Top500.
- Cray_XT3 wikiPageWikiLink Torus.
- Cray_XT3 wikiPageWikiLink UNICOS.
- Cray_XT3 wikiPageWikiLinkText "Cray XT".
- Cray_XT3 wikiPageWikiLinkText "Cray XT3".
- Cray_XT3 wikiPageWikiLinkText "XT3".
- Cray_XT3 hasPhotoCollection Cray_XT3.
- Cray_XT3 wikiPageUsesTemplate Template:Cray_computers.
- Cray_XT3 wikiPageUsesTemplate Template:Unreferenced.
- Cray_XT3 subject Category:Cray_products.
- Cray_XT3 subject Category:Supercomputers.
- Cray_XT3 hypernym Memory.
- Cray_XT3 type Article.
- Cray_XT3 type Software.
- Cray_XT3 type Article.
- Cray_XT3 type Class.
- Cray_XT3 type Product.
- Cray_XT3 type Supercomputer.
- Cray_XT3 comment "The Cray XT3 is a distributed memory massively parallel MIMD supercomputer designed by Cray Inc. with Sandia National Laboratories under the codename Red Storm. Cray turned the design into a commercial product in 2004. The XT3 derives much of its architecture from the previous Cray T3E system, and also from the Intel ASCI Red supercomputer.".
- Cray_XT3 label "Cray XT3".
- Cray_XT3 sameAs Cray_XT3.
- Cray_XT3 sameAs m.0gtmz1.
- Cray_XT3 sameAs Q3696731.
- Cray_XT3 sameAs Q3696731.
- Cray_XT3 wasDerivedFrom Cray_XT3?oldid=683731147.
- Cray_XT3 depiction Shaguar.jpg.
- Cray_XT3 isPrimaryTopicOf Cray_XT3.