The Cray Y-MP was a supercomputer sold by Cray Research from 1988, and the successor to the company's X-MP. The Y-MP retained software compatibility with the X-MP, but extended the address registers from 24 to 32 bits. High-density VLSI ECL technology was used and a new liquid-cooling system was devised. The Y-MP ran the Cray UNICOSoperating system.
The Y-MP could be equipped with two, four or eight vector processors, with two functional units each and a clock cycle time of 6 ns (167 MHz). Peak performance was thus 333 megaflops per processor. Main memory comprised 128, 256 or 512 MB of SRAM.
Cray Y-MP Model D at NASA Center for Computational Sciences, GSFC
The original Y-MP (otherwise known as the Y-MP Model D) was housed in a chassis similar to the horseshoe-shaped X-MP, but with an extra rectangular cabinet added in the middle (containing the CPU boards), thus forming a "Y" shape in plan view. The system could be configured with one or two Model D IOSs (Input/Output Subsystems) and an optional Solid State Disk (SSD) of 256 MB to 4GB capacity. The Y-MP had a measured GFLOPS of 2.144 and a peak GFLOPS of 2.667 in both 1988 and 1989.[1]
The Model D Y-MP was superseded in 1990 by the Y-MP Model E, which replaced IOS Model D with IOS Model E, providing twice the I/O throughput. The Y-shaped chassis was dropped in favor of one or two rectangular cabinets (each with a separate connected cabinet containing the liquid-cooling system), depending on configuration. Maximum RAM was increased to 2 GB and up to eight IOSs were possible. Model E variants included the Y-MP 2E, Y-MP 4E, Y-MP 8E and Y-MP 8I, the latter being a single-cabinet (I for Integrated) version of the two-cabinet 8E. The 2E and 4E were later available with optional secondary air cooling.
The Y-MP M90 was a large-memory variant of the Y-MP Model E introduced in 1992. This replaced the SRAM of the Y-MP with up to 32 GB of slower, but physically smaller DRAM devices. The Y-MP M90 was also available in variants with up to two, four or eight processors (M92, M94 and M98 respectively). Later, the model name was abbreviated to the Cray M90 series.
In 1992, Cray launched the cheaper Y-MP EL (Entry Level) model. This was a reimplementation of the Y-MP architecture in CMOS technology, based on the S-2 design acquired by Cray from Supertek Computers in 1990. The EL was an air-cooled system with a completely different VMEbus-based IOS. EL configurations with up to four processors (each with a peak performance of 133 megaflops) and 32 MB to 1 GB of DRAM were available. The Y-MP EL was later developed into the Cray EL90 series (EL92, EL94 and EL98).
The Y-MP EL came in a cabinet much smaller than the traditional room-filling Cray 2010×1270×810 mm (height × width × depth) and 635 kg in weight—and could be powered from regular mains power.
In popular culture
In the 1992 film Sneakers, whose story is centered around extremely high-level cryptography, two lead characters have an important discussion while sitting on a Cray Y-MP.
In an episode of the television dramedy Northern Exposure titled "Nothing's Perfect", a character expresses her excitement at having finally gained access to a "CRAY Y-MP3" supercomputer.
References
^Dongarra, Jack (2007). "Frequently Asked Questions on the Linpack Benchmark and Top500". Netlib. Retrieved 2014-01-14.
Arthur Trew and Greg Wilson (eds.) (1991). Past, Present, Parallel: A Survey of Available Parallel Computing Systems. New York: Springer-Verlag. ISBN0-387-19664-1.
cray, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, news, newspapers, books, scholar, jstor, september, 2020, lear. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources Cray Y MP news newspapers books scholar JSTOR September 2020 Learn how and when to remove this template message The Cray Y MP was a supercomputer sold by Cray Research from 1988 and the successor to the company s X MP The Y MP retained software compatibility with the X MP but extended the address registers from 24 to 32 bits High density VLSI ECL technology was used and a new liquid cooling system was devised The Y MP ran the Cray UNICOS operating system The Y MP could be equipped with two four or eight vector processors with two functional units each and a clock cycle time of 6 ns 167 MHz Peak performance was thus 333 megaflops per processor Main memory comprised 128 256 or 512 MB of SRAM Cray Y MP Model D at NASA Center for Computational Sciences GSFC The original Y MP otherwise known as the Y MP Model D was housed in a chassis similar to the horseshoe shaped X MP but with an extra rectangular cabinet added in the middle containing the CPU boards thus forming a Y shape in plan view The system could be configured with one or two Model D IOSs Input Output Subsystems and an optional Solid State Disk SSD of 256 MB to 4GB capacity The Y MP had a measured GFLOPS of 2 144 and a peak GFLOPS of 2 667 in both 1988 and 1989 1 The Model D Y MP was superseded in 1990 by the Y MP Model E which replaced IOS Model D with IOS Model E providing twice the I O throughput The Y shaped chassis was dropped in favor of one or two rectangular cabinets each with a separate connected cabinet containing the liquid cooling system depending on configuration Maximum RAM was increased to 2 GB and up to eight IOSs were possible Model E variants included the Y MP 2E Y MP 4E Y MP 8E and Y MP 8I the latter being a single cabinet I for Integrated version of the two cabinet 8E The 2E and 4E were later available with optional secondary air cooling Cray Y MP M90 Ziegler at the US National Cryptologic Museum The Y MP M90 was a large memory variant of the Y MP Model E introduced in 1992 This replaced the SRAM of the Y MP with up to 32 GB of slower but physically smaller DRAM devices The Y MP M90 was also available in variants with up to two four or eight processors M92 M94 and M98 respectively Later the model name was abbreviated to the Cray M90 series The Y MP C90 series is described separately Cray Y MP processor board Contents 1 Y MP EL 2 In popular culture 3 References 4 External linksY MP EL EditIn 1992 Cray launched the cheaper Y MP EL Entry Level model This was a reimplementation of the Y MP architecture in CMOS technology based on the S 2 design acquired by Cray from Supertek Computers in 1990 The EL was an air cooled system with a completely different VMEbus based IOS EL configurations with up to four processors each with a peak performance of 133 megaflops and 32 MB to 1 GB of DRAM were available The Y MP EL was later developed into the Cray EL90 series EL92 EL94 and EL98 Y MP M90 board at the National Cryptologic Museum The Y MP EL came in a cabinet much smaller than the traditional room filling Cray 2010 1270 810 mm height width depth and 635 kg in weight and could be powered from regular mains power In popular culture EditIn the 1992 film Sneakers whose story is centered around extremely high level cryptography two lead characters have an important discussion while sitting on a Cray Y MP In an episode of the television dramedy Northern Exposure titled Nothing s Perfect a character expresses her excitement at having finally gained access to a CRAY Y MP3 supercomputer References Edit Dongarra Jack 2007 Frequently Asked Questions on the Linpack Benchmark and Top500 Netlib Retrieved 2014 01 14 Arthur Trew and Greg Wilson eds 1991 Past Present Parallel A Survey of Available Parallel Computing Systems New York Springer Verlag ISBN 0 387 19664 1 External links EditFred Gannett s Cray FAQ Part 1 Working online Cray Y MP EL in Cray Cyber museumRecordsPreceded byCray 21 95 gigaflops peak World s most powerful supercomputer1988 1989 Succeeded byFujitsu VP2600 104 0 gigaflops measured Retrieved from https en wikipedia org w index php title Cray Y MP amp oldid 1144302982, wikipedia, wiki, book, books, library,
