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- Cray_J90 abstract "The Cray J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first sold by Cray Research in 1994. The J90 evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The J90 supported up to 32 CMOS processors with a 10 ns (100 MHz) clock. It supported up to 4 GB of main memory and up to 48 GB/s of memory bandwidth, giving it considerably less performance than the contemporary Cray T90, but making it a strong competitor to other technical computers in its price range. All input/output in a J90 system was handled by an IOS (Input/Output Subsystem) called IOS Model V. The IOS-V was based on the VME64 bus and SPARC I/O processors (IOPs) running the VxWorks RTOS. The IOS was programmed to emulate the IOS Model E, used in the larger Cray Y-MP systems, in order to minimize changes in the UNICOS operating system. By using standard VME boards, a wide variety of commodity peripherals could be used.The J90 was available in three basic configurations, the J98 with up to eight processors, the J916 with up to 16 processors, and the J932 with up to 32 processors.Each J90 processor was composed of two chips - one for the scalar portion of the processor, and the other for the vector portion. The scalar chip was also notable for including a small (128 word) data cache to enhance scalar performance. (Cray machines have always had instruction caching.)In 1997 the J90se (Scalar Enhanced) series became available, which doubled the scalar speed of the processors to 200 MHz; the vector chip remained at 100 MHz. Support was also added for the GigaRing I/O system found on the Cray T3E and Cray SV1, replacing IOS-V. Later, SV1 processors could be installed in a J90 or J90se, further increasing performance within the same frame.".
- Cray_J90 thumbnail Cray_J916.JPG?width=300.
- Cray_J90 wikiPageExternalLink TOC6.
- Cray_J90 wikiPageExternalLink crayv.html.
- Cray_J90 wikiPageID "6869545".
- Cray_J90 wikiPageLength "2337".
- Cray_J90 wikiPageOutDegree "24".
- Cray_J90 wikiPageRevisionID "656036881".
- Cray_J90 wikiPageWikiLink CMOS.
- Cray_J90 wikiPageWikiLink CPU_cache.
- Cray_J90 wikiPageWikiLink Category:1994_introductions.
- Cray_J90 wikiPageWikiLink Category:Cray_products.
- Cray_J90 wikiPageWikiLink Category:Supercomputers.
- Cray_J90 wikiPageWikiLink Computer_Memory.
- Cray_J90 wikiPageWikiLink Computer_memory.
- Cray_J90 wikiPageWikiLink Cray.
- Cray_J90 wikiPageWikiLink Cray_Research.
- Cray_J90 wikiPageWikiLink Cray_SV1.
- Cray_J90 wikiPageWikiLink Cray_T3E.
- Cray_J90 wikiPageWikiLink Cray_T90.
- Cray_J90 wikiPageWikiLink Cray_Y-MP.
- Cray_J90 wikiPageWikiLink Cray_Y-MP_EL.
- Cray_J90 wikiPageWikiLink Data_cache.
- Cray_J90 wikiPageWikiLink Jedi.
- Cray_J90 wikiPageWikiLink Minisupercomputer.
- Cray_J90 wikiPageWikiLink Operating_system.
- Cray_J90 wikiPageWikiLink RTOS.
- Cray_J90 wikiPageWikiLink Real-time_operating_system.
- Cray_J90 wikiPageWikiLink SPARC.
- Cray_J90 wikiPageWikiLink Supercomputer.
- Cray_J90 wikiPageWikiLink UNICOS.
- Cray_J90 wikiPageWikiLink VMEbus.
- Cray_J90 wikiPageWikiLink Vector_processor.
- Cray_J90 wikiPageWikiLink VxWorks.
- Cray_J90 wikiPageWikiLink File:Cray_J916.JPG.
- Cray_J90 wikiPageWikiLinkText "Cray J90".
- Cray_J90 hasPhotoCollection Cray_J90.
- Cray_J90 wikiPageUsesTemplate Template:Cray_computers.
- Cray_J90 subject Category:1994_introductions.
- Cray_J90 subject Category:Cray_products.
- Cray_J90 subject Category:Supercomputers.
- Cray_J90 hypernym Supercomputer.
- Cray_J90 type InformationAppliance.
- Cray_J90 type Class.
- Cray_J90 type Product.
- Cray_J90 type Supercomputer.
- Cray_J90 comment "The Cray J90 series (code-named Jedi during development) was an air-cooled vector processor supercomputer first sold by Cray Research in 1994. The J90 evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The J90 supported up to 32 CMOS processors with a 10 ns (100 MHz) clock.".
- Cray_J90 label "Cray J90".
- Cray_J90 sameAs Cray_J90.
- Cray_J90 sameAs Cray_J90.
- Cray_J90 sameAs m.0gth9_.
- Cray_J90 sameAs Q3696724.
- Cray_J90 sameAs Q3696724.
- Cray_J90 wasDerivedFrom Cray_J90?oldid=656036881.
- Cray_J90 depiction Cray_J916.JPG.
- Cray_J90 isPrimaryTopicOf Cray_J90.