references but its sources remain unclear because it has insufficient inline citations . please help to improve this article by introducing more precise citations . june 2013 learn how and when to remove this template message meiko type private industry computer hardware founded march 1985 headquarters bristol uk key people miles chesney managing director david alden finance director gerry talbot founder roy bottomley founder eric barton founder james cownie founder website www.meiko.com meiko scientific ltd. was a british supercomputer company based in bristol founded by members of the design team working on the inmos transputer microprocessor . contents 1 history 2 computing surface 2.1 meikos 2.2 cs 1 interconnect 3 cs 2 3.1 elan elite interconnect 4 meiko sparc fpu 5 references 6 external links history edit in 1985 when inmos management suggested the release of the transputer be delayed miles chesney david alden eric barton roy bottomley james cownie and gerry talbot resigned and formed meiko japanese for well engineered to start work on massively parallel machines based on the processor . nine weeks later they demonstrated a transputer system based on experimental 16 bit transputers at the siggraph in san francisco in july 1985 . in 1986 a system based on 32 bit t414 transputers was launched as the meiko computing surface . by 1990 meiko had sold more than 300 systems and grown to 125 employees . in 1993 meiko launched the second generation meiko cs 2 system but meiko ran into financial difficulties in the mid 1990s . the meiko technical team and technology was transferred to a joint venture company called quadrics supercomputers world ltd. qsw formed by alenia spazio of italy in mid 1996 . at quadrics the cs 2 interconnect technology was developed into qsnet . as of 2014 a vestigial meiko website still exists . 1 computing surface edit the meiko computing surface sometimes retrospectively referred to as the cs 1 was a massively parallel supercomputer . the system was based on the inmos transputer microprocessor later also using sparc and intel i860 processors . 2 3 the computing surface architecture comprised multiple boards containing transputers connected together by their communications links via meiko designed link switch chips . a variety of different boards were produced with different transputer variants ram capacities and peripherals . the initial software environments provided for the computing surface was ops occam programming system meiko s version of inmos s d700 transputer development system . this was soon superseded by a multi user version multiops . later meiko introduced m vcs meiko multiple virtual computing surfaces a multi user resource management system which allowed the processors of a computing surface to be partitioned into several domains of different sizes . these domains were allocated by m vcs to individual users thus allowing several simultaneous users access to their own virtual computing surfaces . m vcs was used in conjunction with either ops or meikos a unix like single processor operating system . in 1988 meiko launched the in sun computing surface which repackaged the computing surface into vmebus boards designated the mk200 series suitable for installation in larger sun 3 or sun 4 systems . the sun acted as front end host system for managing the transputers running development tools and providing mass storage . a version of m vcs running as a sunos daemon called svcs sun virtual computing surfaces provided access between the transputer network and the sun host . as the performance of the transputer became less competitive towards the end of the 1980s the follow on t9000 transputer being beset with delays meiko added the ability to supplement the transputers with intel i860 processors . each i860 board mk086 or mk096 contained two i860s with up to 32 mb of ram each and two t800s providing inter processor communication . sometimes known as the concerto or simply the i860 computing surface these systems had limited success . meiko also produced a sparc processor board the mk083 which allowed the integration of the sunos operating system into the computing surface architecture similarly to the in sun computing surface . these were usually used as front end host processors for transputer or i860 computing surfaces . svcs or an improved version called simply vcs was used to manage the transputer resources . computing surface configurations with multiple mk083 boards were also possible . a major drawback of the computing surface architecture was poor i o bandwidth for general data shuffling . although aggregate bandwidth for special case data shuffling could be very high the general case has very poor performance relative to the compute bandwidth . this made the meiko computing surface uneconomic for many applications . meikos edit meikos also written as meikos or meikos was a unix like transputer operating system developed for the computing surface during the late 1980s . meikos was derived from an early version of minix extensively modified for the computing surface architecture . unlike helios another unix like transputer operating system meikos was essentially a single processor operating system with a distributed filesystem . meikos was used in conjunction with the m vcs meiko multiple virtual computing surfaces resource management software which partitioned the processors of a computing surface into domains managed user access to these domains and provided inter domain communication . meikos had diskless and fileserver variants the former running on the seat processor of an m vcs domain providing a command line user interface for a particular user ; the latter running on processors with attached scsi hard disks providing a remote file service called sfs surface file system to instances of diskless meikos . the two communicated via m vcs . meikos was made obsolete by the introduction of the in sun computing surface and the meiko mk083 sparc processor board which allowed sunos and svcs sun virtual computing surfaces later developed as vcs to take over the roles of meikos and m vcs respectively . the last meikos release was meikos 3.06 in early 1991 . cs 1 interconnect edit this was based on the transputer link protocol . meiko developed its own switch silicon on and european silicon systems es2 gate array . this asic provided static connectivity and limited dynamic connectivity and was designed by moray mclaren . cs 2 edit the cs 2 . 4 5 6 was launched in 1993 and was meiko s second generation system architecture superseding the earlier computing surface . the cs 2 was an all new modular architecture based around supersparc or hypersparc processors 7 and optionally fujitsu vp vector processors . 8 these implemented an instruction set similar to the fujitsu vp2000 vector supercomputer and had a nominal performance of 200 megaflops on double precision arithmetic and double that on single precision . the supersparc processors ran at 40 mhz initially later increased to 50 mhz . subsequently hypersparc processors were introduced at 66 90 or 100 mhz . the cs 2 was intended to scale up to 1024 processors . the largest cs 2 system built was a 224 processor system 9 installed at lawrence livermore national laboratory . the cs 2 ran a customized version of solaris initially solaris 2.1 later 2.3 and 2.5.1 . elan elite interconnect edit the processors in a cs 2 were connected by a meiko designed multi stage packet switched fat tree network implemented in custom silicon . 10 11 12 this project codenamed elan elite was started in 1990 as a speculative project to compete with the t9000 transputer from inmos which meiko intended to use as an interconnect technology . the t9000 began to suffer massive delays such that the internal project became the only viable interconnect choice for the cs 2 . this interconnect comprised two devices code named elan adapter and elite switch . each processing element included an elan chip a communications co processor based on the sparc architecture accessed via a sun mbus cache coherent interface and providing two 50mb s bi directional links . the elite chip was an 8 way link crossbar switch used to form the packet switched network . the switch had limited adaption based on load and priority . 13 both asics were fabbed in cmos gate arrays by gec plessey in their roborough plymouth semi conductor fab in 1993 . after the meiko technology was acquired by quadrics the elan elite interconnect technology was developed into qsnet . meiko sparc fpu edit meiko had hired fred mark homewood and moray mclaren both of whom had been instrumental in the design of the t800 . together they architected and developed an improved higher performance fpu core owned by meiko . this was initially targeted at the intel 80387 instruction set . an ongoing legal battle between intel amd and others over the 80387 made it clear this project was a commercial non starter . a chance discussion between mclaren and andy bechtolsheim while visiting sun microsystems to discuss licensing solaris caused meiko to re target the design for sparc . meiko was able to turn around the core fpu design in a short time and lsi logic fabbed a device for the sparcstation 1 . a major difference over the t800 fpu was that it fully implemented the ieee 754 standard for computer arithmetic . this including all rounding modes denormalised numbers and square root in hardware without taking any hardware exceptions to complete computation . a sparcstation 2 design was also developed together with a combined part targeting the sparcstation 2 asic pinout . lsi fabbed and manufactured the separate fpu l64814 as part of their sparkit chipset . 14 the meiko design was eventually fully licensed to sun who went on to use it in the microsparc family of asics for a number of generations 15 in return for a one off payment and full solaris source license . references edit meiko website ; internet web site computing surface brochure meiko ; 1989 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 cs 2 product description meiko ; 1993 top500 description of the cs 2 top500.org ; 1998 cs 2 predatory computing performance meiko limited ; 1992 cs 2 hardware reference manuals meiko ; 1995 mk403 manual meiko ; 1993 cs 2 224 at lawrence livermore national laboratory . meiko cs 2 interconnect elan elite design jon beecroft fred homewood moray mclaren ; journal parallel computing ; volume 20 issue 10 11 nov. 1994 meiko cs 2 interconnect elan elite design fred homewood moray mclaren ; hot interconnects conference stanford ; august 1993 message passing performance jack dongarra and tom dunigan ; concurrancy practice and experience ; october 1997 communications network overview meiko limited ; 1993 sparkit hotchips 03 stanford ; august 1991 sun taps lsi for low cost sparc design and fab ; computer business review ; march 12th 1997 ; external links edit meiko survey of high performance computing systems meiko corporate overview via internet archive e. mcintosh and b. panzer steindel . parallel processing at cern . presented at hepix96 caspur rome october 1996 . meiko documentation at bitsavers.org v t e unix and unix like operating systems bsd 386bsd freebsd netbsd openbsd dragonfly bsd nextstep darwin macos ios sunos ultrix coherent gnu linux android chrome os lynxos minix plan 9 qnx blackberry 10 research unix system v a ux aix hp ux illumos irix openserver solaris tru64 unix unixware xenix more ... category commons book retrieved from https en.wikipedia.org w index.php title meiko scientific & oldid 736829125 categories supercomputersmassively parallel computersdefunct technological companies of the united kingdomcompanies established in 1985companies disestablished in 1996hidden categories articles lacking in text citations from june 2013all articles lacking in text 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