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	Amdahl's law - Wikipedia, the free encyclopedia
		Amdahl's law, named after computer architect Gene Amdahl, is used to find the maximum expected improvement to an overall system when only part of the system is improved.
		Amdahl's law is a demonstration of the law of diminishing returns: while one could speed up part of a computer a hundred-fold or more, if the improvement only affects 12% of the overall task, the best the speedup could possibly be is
		Amdahl's Rule Of Thumb is that 1 byte of memory and 1 byte per second of I/O are required for each instruction per second supported by a computer.
	en.wikipedia.org /wiki/Amdahl's_law (627 words)

	Gene Amdahl - Wikipedia, the free encyclopedia
		Amdahl was born to immigrant parents in Flandreau, South Dakota.
		In November 2004, Amdahl was appointed to the Board of Advisors of Massively Parallel Technologies.
		Amdahl was named an IBM Fellow in 1965, became a member of the National Academy of Engineering in 1967 and was recognized as the Centennial Alumnus of South Dakota State University in 1986.
	en.wikipedia.org /wiki/Gene_Amdahl (694 words)

	Gene Amdahl (Site not responding. Last check: 2007-10-21)
		Gene Myron Amdahl (born November 16, 1922) is an American computer architect and hi-tech entrepreneur of Norwegian descent, chiefly known for his work on mainframe computer s at International Business Machines (IBM) and later his own companies.
		He left IBM again in 1970, after his ideas for computer development were rejected, and set up Amdahl Corporation in Sunnyvale, Calif. with aid from Fujitsu.
		Amdahl Corporation Fujitsu-owned provider of IBM mainframe-compatible servers, services, software and storage.
	www.serebella.com /encyclopedia/article-Gene_Amdahl.html (811 words)

	Gene Amdahl (Site not responding. Last check: 2007-10-21)
		Gene Myron Amdahl (born November 16, 1922) is an American computer architect and hi-techentrepreneur of Norwegian descent, chiefly known for his work on mainframe computers at International Business Machines (IBM) and later his own companies.
		Amdahl was born to immigrant parents in Flandreau,South Dakota.
		Ever determined, Amdahl co-founded Commercial Data Servers in 1996, again in Sunnyvale, andagain developing mainframe-like machines but this time with new super-cooled processor designs and aimed at physically smallersystems.
	www.therfcc.org /gene-amdahl-42817.html (446 words)

	Breaking News
		Amdahl's Law, though never before proven through a mathematical derivation from first principles, helped establish the supercomputing industry and has for more than 30 years been a force in the industry.
		Gene Amdahl, a recognized authority on parallel processing, crafted "Amdahl's Law" in 1967, which states that there are communication issues that eventually place an upper limit on the maximum speed of parallel processing systems, therefore mitigating much of the benefit of parallelization.
		For 35 plus years, traditional non-mathematic interpretations of Amdahl's Law have led developers of supercomputers to believe that only 20 percent or less efficiency was possible through parallel processing, with larger machines achieving only 7 percent to 10 percent efficiency.
	www.tgc.com /breaking/2340.html (452 words)

	Definition of Amdahl
		Amdahl Corporation was founded by Dr. Gene Amdahl, a former IBM employee, in 1970, and specializes in IBM mainframe-compatible computer products.
		Amdahl was a major supplier of large mainframe computers, and later of UNIX and Open systems software and servers, data storage subsystems, data communications products, application development software, and a variety of educational and consulting services.
		Amdahl owed some of its success to antitrust settlements between IBM and the U.S. Department of Justice which assured that Amdahl's customers could license IBM's mainframe software under reasonable terms.
	www.wordiq.com /definition/Amdahl (710 words)

	Gene Amdahle
		Gene Myron Amdahl was born in South Dakota in 1922.
		In 1955, Amdahl worked with others to design the Datatron, which led to a computer called the Stretch, and eventually became the IBM 7030, a computer that used the new transistor technology.
		Amdahl became an IBM Fellow and was able to pursue his own research projects.
	www.thocp.net /biographies/amdahl_gene.htm (1207 words)

	Amdahl's law (Site not responding. Last check: 2007-10-21)
		Amdahl's law, named after computer architect Gene Amdahl, is used to find out the maximum expected improvement to an overall system when only a part of it is improved.
		Amdahl's law is a demonstration of the law of diminishing returns : while one could speed up part of a computer a hundred-fold or more if the improvement only affects 12% of the overall task the best the speedup could possibly be is
		Amdahl's law states that the overall speedup of applying the improvement will be :
	www.serebella.com /encyclopedia/article-Amdahl's_law.html (484 words)

	Amdahl Corporation -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-21)
		Amdahl Corporation was founded by Dr. (Click link for more info and facts about Gene Amdahl) Gene Amdahl, a former (Click link for more info and facts about IBM) IBM employee, in 1970, and specializes in (Click link for more info and facts about IBM mainframe) IBM mainframe-compatible computer products.
		Amdahl owed some of its success to (Click link for more info and facts about antitrust) antitrust settlements between IBM and the U.S. Department of Justice which assured that Amdahl's customers could license IBM's mainframe software under reasonable terms.
		Amdahl Corporation enjoyed perhaps its best sales during IBM's transition to (Click link for more info and facts about CMOS) CMOS technology in the early to mid 1990s.
	www.absoluteastronomy.com /encyclopedia/a/am/amdahl_corporation.htm (758 words)

	Amdahl's Law
		We now have timing results for a 1024-processor system that demonstrate that the assumptions underlying Amdahl's 1967 argument are inappropriate for the current approach to massive ensemble parallelism.
		We feel that it is important for the computing research community to overcome the "mental block" against massive parallelism imposed by a misuse of Amdahl's speedup formula; speedup should be measured by scaling the problem to the number of processors, not fixing problem size.
		Amdahl, G.M. Validity of the single-processor approach to achieving large scale computing capabilities.
	www.scl.ameslab.gov /Publications/Gus/AmdahlsLaw/Amdahls.html (612 words)

	Gene Amdahl - Hutchinson encyclopedia article about Gene Amdahl (Site not responding. Last check: 2007-10-21)
		Amdahl designed his first computer as part of his PhD dissertation, and then worked for International Business Machines (IBM) where he led the design of the IBM 704 in the 1950s, and the S/360 series of computers in the early 1960s which came to dominate the world of mainframes.
		In 1970, he founded Amdahl Corporation, then the largest manufacturer of IBM-compatible computers, to develop the first ‘plug compatible’ computers that would run the same software as IBM's machines.
		This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.
	encyclopedia.farlex.com /Gene+Amdahl (148 words)

	The Legend of Amdahl
		The most glaring omission is the complete absence of any mention of Amdahl's ill-fated "Key Computing" venture -- a $350 million boondoggle that sapped the company's resources at the exact instant that Amdahl faced the make-or-break challenge of precipitously-declining price/performance in the mainframe market.
		Amdahl was above all a community of outstanding people, and that community is conspicuous by its absence from these pages.
		Amdahl's idea of making a computer that was software compatible with IBM's was unique at the time.
	www.centrasoft.com /d4/0945903197.htm (651 words)

	Computer History Museum - Lectures - The Founding of Amdahl Corporation
		His early professional career was spent at IBM where he worked on simulation studies and machine design for character recognition as designer and project manager for the IBM 704; as initial planner for the IBM 709 and 7030; and as Manager of Architecture for the IBM System/360.
		By 1969, Amdahl had been named an IBM Fellow, that company's highest honor, and was made director of IBM's Advanced Computing Systems (ACS) Laboratory in Menlo Park, California.
		Amdahl Corporation was the first successful IBM-compatible CPU manufacturer, opening the door for competition to advance technology.
	www.computerhistory.org /events/lectures/amdahl_09052001 (421 words)

	Fujitsu bid for Amdahl could spark European refocus; shareholders mutiny (580) - vnunet.com (Site not responding. Last check: 2007-10-21)
		Amdahl has spent the past few years reinventing itself as a corporate services company and this business could be amalgamated with Sorbus, at least in Europe, said one insider.
		Amdahl and Hitachi control about one-quarter of the $8 billion IBM-compatible market, but compatibles' share of the overall sector is declining as IBM itself narrows the price gap and trades on its strong brand.
		Amdahl himself was forced out of the company after disputes with investors in 1979 and has founded several hi-tech start-ups since.
	www.financialdirector.co.uk /news/it/33055 (659 words)

	[No title]
		Gene Amdahl's WISC is currently on display at the The Computer Museum History Center's Visible Storage Exhibit Area.
		Gene Myron Amdahl was born in Flandreau, South Dakota in 1922.
		Amdahl initially worked on machine designs for character recognition and simulation studies to determine if a machine could be made to behave like a human brain.
	ed-thelen.org /comp-hist/amdahl-bio-core-1-4.html (1211 words)

	Amdahl - company profile on STORAGEsearch.com
		Amdahl Corporation, a wholly owned subsidiary of Fujitsu Limited, provides integrated computing solutions that meet the needs of many of the largest users of information technology in the world.
		Amdahl develops and deploys systems, services and support that meet the needs of the world's most compute-intensive organizations and environments.
		With more than 28 years of experience delivering large-scale computing and client/server technology, the Amdahl mission is to deliver innovative systems, services and support to lead customers to the most complete and powerful data centers of the 21st century.
	www.storagesearch.com /amdahl.html (224 words)

	Amdahl's Law (Site not responding. Last check: 2007-10-21)
		Amdahl's Law is a law governing the speedup of using parallel processors on a problem, versus using only one serial processor.
		Overhead alone would then place an upper limit on throughput of five to seven times the sequential processing rate, even if the housekeeping were done in a separate processor...At any point in time it is difficult to foresee how the previous bottlenecks in a sequential computer will be effectively overcome.
		When B is constant (recall B = the percentage of the strictly parallel portion of the program), Amdahl's Law yields a speedup curve which is logarithmic and remains below the line S=N. This law shows that it is indeed the algorithm and not the number of processors which limits the speedup.
	home.wlu.edu /~whaleyt/classes/parallel/topics/amdahl.html (474 words)

	Amdahl's latest mainframe is choked by parts shortage - Webact!ve (Site not responding. Last check: 2007-10-21)
		Amdahl has been hit by a parts shortage for its newest mainframe, the 1000 series.
		An Amdahl spokesman admitted that parts are in short supply from Fujitsu and said he does not expect the situation to improve before June.
		The Amdahl spokesman did not deny this figure, but said that in the long run there is a good size market for the 1000 series among customers with ECL based mainframes that are 10 years old or more.
	www.webactivemagazine.co.uk /2111227 (512 words)

	PCWorld.com - Amdahl to Quit Mainframes
		Amdahl Thursday confirmed that it plans to exit the mainframe market, a move that shocked some users and led analysts to warn that IBM will have more freedom to hold the line on prices for its big-iron S/390 systems, now that its two plug-compatible rivals are largely exiting the scene.
		Amdahl will cease making those machines in March 2002, she says, although the company will continue to support its installed base of users for another five years after stopping production.
		Amdahl's planned exit is an unfortunate but not unexpected consequence of slowing mainframe demand and competitive pressures from powerful new Unix servers, says David Floyer, an analyst at consultancy IT Centrix in Mountain View, California.
	www.pcworld.com /resource/article/0,aid,32642,00.asp (578 words)

	Management maneuvers
		Amdahl Corp., still often associated with big iron, has shown considerable nimbleness in moving into the intranet arena.
		Amdahl's intranet involvement dates to 1994, when it began using the term "intranet" in a series of customer focus groups.
		Amdahl also has a long history of helping our customers bridge between legacy and emerging technologies, whether it was MVS and Unix, mainframes and client-server or now tying it all together with an intranet infrastructure.
	www.iorg.com /papers/nww.html (1912 words)

	Reevaluating Amdahl's Law and Gustafson's Law (Site not responding. Last check: 2007-10-21)
		In 1967, Amdahl's Law was used as an argument against massively parallel processing.
		The key to Amdahl's Law is a serial processing percentage relative to the overall program execution time using a single processor.
		Using Amdahl's Law as an argument against massively parallel processing is not valid.
	joda.cis.temple.edu /~shi/docs/amdahl/amdahl.html (2909 words)

	IT-Director.com: Fujitsu rejigs Amdahl (Site not responding. Last check: 2007-10-21)
		Amdahl is now officially designated as the lead Fujitsu company on IT infrastructure services; or a perhaps a bit more than that.
		Amdahl is actually positioned as a holding company which has four operational arms, one of which is also Amdahl (the one providing infrastructure services).
		Well, if you aren't you should probably be doing PR for Amdahl because their own staff seemed to recognise that they had a hard explanation job on their hands.
	www.it-director.com /article.php?articleid=1662&SESSID=7f57fea60dc633d2200ebad3bd0a390c (760 words)

	Amdahl's law (Site not responding. Last check: 2007-10-21)
		Amdahl's law, named after computer architect Gene Amdahl, is used to find out the maximum expected improvement to an overallsystem when only a part of it is improved.
		Amdahl's law is a demonstration of the law of diminishing returns : while one could speed up part of a computer a hundred-fold ormore if the improvement only affects 12% of the overall task the best the speedup could possibly be is
		In the special case of parallelization, Amdahl's law states that if F is the fraction of a calculation that issequential (i.e.
	www.therfcc.org /amdahl%27s-law-132979.html (374 words)

	LSPR
		Amdahl has a set of internal benchmark jobs similar to IBM's, but they do not publish a description of their workloads or specific performance claims for each type of workload.
		Since Amdahl does not publish their workloads, we can't be certain which workloads are at which end of the range, although we might expect them to be similar to IBM's workloads.
		Amdahl assigns a value to the SU/Sec to ensure that the same percent of TSO transactions complete in first period.
	www.watsonwalker.com /lspr.html (9102 words)

	Expert About am:Amdahl
		Amdahl's Law expresses the speedup of parallel processing as a function of the number of processors N and the length of the portion of sequencial code used (from 0 to 1): Speed_Up = 1/(a + (1 - a)/N).
		About Amdahl Corporation Amdahl Corporation, a wholly owned subsidiary of Fujitsu Limited, provides integrated computing solutions that meet the needs of many of the largest users of information technology in the world.
		Amdahl has begun shipping its new Platinum/400 RAID storage subsystem for S/390 environments with 36GB drives, promising twice the capacity of 18GB drives without any increase in footprint, power consumption, or cooling requirements.
	expertsite.biz /dir/am/Amdahl.htm (1529 words)

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