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| | Amdahl's law - Wikipedia, the free encyclopedia |
 | | 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. | | | 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 | | | More technically, the law is concerned with the speedup achievable from an improvement to a computation that affects a proportion P of that computation where the improvement has a speedup of S. |
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http://en.wikipedia.org/wiki/Amdahl's_law
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| | Gene Amdahl - Wikipedia, the free encyclopedia |
| | Amdahl also developed a streamlined version of IBM's VM operating system software, further increasing performance. | | | 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 computers at International Business Machines (IBM) and later his own companies. | | | At IBM Amdahl worked on the IBM 704, the IBM 709, and then the Stretch project, the basis for the IBM 7030. |
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http://en.wikipedia.org/wiki/Gene_Amdahl
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| | Gene Amdahl - Hutchinson encyclopedia article about Gene Amdahl |
| | 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. | | | In 1980, he formed Trilogy to build large computers. |
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http://encyclopedia.farlex.com/Gene+Amdahl
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| | Gene Amdahle |
| | 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. | | | Instead of creating a rival system to IBM, Amdahl created discounted computers that could be substituted for name brand models and run the same software. | | | In 1987, Amdahl founded his third company, this one called Andor Systems after the "and" and "or" logic gates of computer circuitry. |
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http://www.thocp.net/biographies/amdahl_gene.htm
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| | 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. | | | Amdahl left IBM Corporation in the fall of 1970 to create more innovative mainframe computers. | | | 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. |
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http://www.computerhistory.org/events/lectures/amdahl_09052001
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| | [No title] |
| | 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. | | | Despite the difficulties, Amdahl was able to simplify design, improve technology, and build discounted computers that could be substituted for the more costly IBM models. | | | He was the chief architect for the IBM 704 computer, IBM's first commercial machine with floating-point hardware and the first widely-used machine to use indexing and a high-level programming language (FORTRAN). |
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http://ed-thelen.org/comp-hist/amdahl-bio-core-1-4.html
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| | The Legend of Amdahl |
| | Amdahl's idea of making a computer that was software compatible with IBM's was unique at the time. | | | For over twenty years, Amdahl Corp was a great place to design and build interesting computers. | | | Anyone with an interest in the history of the computer industry will certainly enjoy the first half of the book. |
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http://www.centrasoft.com/d4/0945903197.htm
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| | Computer History Museum - 1998 Fellow Award Recipient, Gene Amdahl |
| | During the 1960s, Gene Amdahl was Director of IBM's Advanced Computing Systems Laboratory in Menlo Park, California, where he led the design of the IBM System/360 family of computer systems, working with project manager Fred Brooks, Jr. | | | Amdahl has won many awards, including the ACM/IEEE Eckert-Mauchly Award (1987) and the IEEE Computer Entrepreneur Award (1989). | | | In 1970, he left IBM to found the Amdahl Corporation, a maker of IBM Plug-Compatible Mainframes (PCMs) where he remained until 1980. |
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http://www.computerhistory.org/events/hall_of_fellows/amdahl
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| | Reevaluating Amdahl's Law and Gustafson's Law |
| | Therefore, it is possible for such an algorithm to "break" Amdahl's Law on selected inputs. | | | A prerequisite to applying Amdahl's or Gustafson's formulation is that the serial and parallel programs take the same number of total calculation steps for the same input. | | | We also focus on an often neglected prerequisite to applying the Amdahl's Law: the serial and parallel programs must compute the same total number of steps for the same input. |
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http://joda.cis.temple.edu/~shi/docs/amdahl/amdahl.html
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| | Breaking News |
| | The derivation leads to a new level of understanding of the fundamentals underlying parallel processing, which has allowed MPT to establish a new standard for speeding up high performance computing. | | | The Massively Parallel approach, now confirmed by Amdahl's Law as the most efficient method of parallel processing, concentrates on improving the efficiency of the communication methodology between processors. | | | Massively Parallel Technologies (MPT), a provider of on-demand high- performance computing, announced the company has developed the first mathematical derivation of Amdahl's Law. |
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http://www.tgc.com/breaking/2340.html
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| | Amdahl's law - a Whatis.com definition |
| | In computer programming, Amdahl's law is that, in a program with parallel processing, a relatively few instructions that have to be performed in sequence will have a limiting factor on program speedup such that adding more processors may not make the program run faster. | | | Others argue that the kinds of applications for which parallel processing is best suited tend to be larger problems in which scaling up the number of processors does indeed bring a corresponding improvement in throughput and performance. | | | This is generally an argument against parallel processing for certain applications and, in general, against overstated claims for parallel computing. |
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http://search390.techtarget.com/sDefinition/0,290660,sid10_gci211555,00.html
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| | Business Wire: Amdahl Announces Enterprise Support for Linux. @ HighBeam Research |
| | Amdahl has developed a database of Linux information so that EHD can rapidly identify solutions if an incident should occur. | | | The Amdahl site provides current, in-depth information on Amdahl offerings and solutions for enterprise computing. | | | "Amdahl is aware of one of the most serious problems facing businesses today -- lack of quality service and support for enterprise-level systems," said David West, vice president, Systems Marketing at Amdahl. |
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http://www.highbeam.com/library/doc0.asp?DOCID=1G1:57890136&refid=holomed_1
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| | ITtoolbox Tech Press Releases |
| | Amdahl IT Services solutions feature ISO 9001 certification, multi-environment integration of all major IT technologies and operating systems (including Microsoft Windows NT®, UNIX®, System/390®, and LINUX), plus more than 30 years of experience in supporting complex IT installations in the world's largest computing environments. | | | Amdahl IT Services has been an expert in enterprise-scale computing, networking, and storage systems for more than 30 years and through its InfraCare services, manages projects from design through deployment, operation, and maintenance. | | | The Amdahl site provides current, in-depth information on Amdahl IT Services offerings and solutions for enterprise computing. |
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http://www.ittoolbox.com/press/pr.asp?i=56179
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| | Management maneuvers |
| | 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. | | | The most striking feature of web technology was how easy it was for non-technical people to use. | | | In mid-1994, we began looking at how Amdahl might integrate the skunkworks pilot into our business. |
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http://www.iorg.com/papers/nww.html
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| | LSPR |
| | 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. | | | As an example, the fastest IBM Generation 4 (G4) chip is rated at 2.7 nano-seconds and is used in their RY5 (10-way based on a 72 MIPS uni-processor). | | | The performance estimates for new processor models from IBM, Amdahl, and HDS provide valuable data to help you understand how much capacity you can expect to see if you move to those new models. |
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http://www.watsonwalker.com/lspr.html
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| | Amdahl sets out to gain higher profile - Computeract!ve |
| | Amdahl is currently assessing the market potential for this product in the US and Europe, considering the hold of Tivoli and Computer Associates. | | | Cope-Morgan expects Fujitsu to use Amdahl as a channel for much of its high-end software and services in Europe and in the US where the Amdahl brand and user base is much better established than Fujitsu's. | | | Despite annual software sales of $100 million ($60.97 million), Amdahl is still known for its mainframe-focused hardware business: "This is as much our fault as anyone else's," admitted Alun Cope-Morgan, Amdahl's director of software operations for northern Europe. |
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http://www.computeractive.co.uk/news/it/60977
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| | PlanetMath: Amdahl's Law |
| | Amdahl's Law reveals the maximum speedup that can be expected from parallel algorithms given the proportion of parts that must be computed sequentially. | | | This is version 11 of Amdahl's Law, born on 2001-12-22, modified 2002-07-26. |
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http://planetmath.org/encyclopedia/AmdahlsLaw.html
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| | PCWorld.com - Amdahl to Quit Mainframes |
| | Amdahl says it's doing the same thing because the investment required to stay competitive with IBM's new 64-bit Z-Series mainframes just wasn't worth the projected returns. | | | Instead, Amdahl plans to focus all of its hardware investments on Fujitsu-branded Unix systems based on Sun Microsystems' UltraSPARC microprocessors. | | | With mainframe sales projected to dwindle during the next few years, and demand for 64-bit S/390 machines likely to remain low for the near future, the investment didn't look appealing to Amdahl from a business perspective, adds Stone. |
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http://www.pcworld.com/resource/article/0,aid,32642,00.asp
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| | Working Smart - Amdahl's Sales Compensation System - CIO Magazine April 1, 1997 |
| | And since each system was standalone, employees at headquarters who needed to consolidate information had the time-consuming and error-prone task of reentering data. | | | Particularly when it comes to commissions, systems need to be flexible enough to support rapid changes. | | | Antares Alliance Group's ObjectStar rapid a development software, which incorporates an object management architecture; Amdahl 5595M mainframe running IBM Corp.'s MVS; Intel Corp. Pentium- and 486-based PCs and laptops |
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http://www.cio.com/archive/040197/smart.html
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| | Amdahl's Law |
| | IBM (which made just about all computers at the time and for a considerable time afterward) wanted to speed things up by doing things in parallel (to sell more computers), but rapidly found that there were some fairly stringent restrictions on how much of a speedup one could get for a given parallelized task. | | | The ``maximum speedup'' Amdahl refers to is just the ratio | | | Note again that this is the best one can hope to achieve unless the very act of parallelization changes the algorithm used to do the parallel work and/or the hardware interaction into something that reduces |
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http://www.phy.duke.edu/resources/computing/brahma/beowulf_book/node21.html
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| | Microsoft adds Amdahl to NT roster CNET News.com |
| | Amdahl, a provider of mainframe and mid-range computer systems. | | | Specific areas of application integration work include migration from host-based messaging, use of Microsoft software for Internet commerce systems deployment, and use of the software giant's SQL Server database to drive adoption of NT-based data warehousing rollouts. | | | Under terms of the latest agreement, Amdahl's DMR Consulting Group services organization will train up to 1,500 engineers on Microsoft products, provide integration between Amdahl IBM-based host systems and server-based Microsoft BackOffice applications such as the Exchange messaging system, and create several "business solution" centers for demonstrations and planning purposes. |
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http://news.com.com/News/Item/0,4,18699,00.html?st.ne.fd.mdh
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| | Fujitsu's 'cheap' Amdahl deal - vnunet.com |
| | But over the last three years, Amdahl has lost out in the technology wars to IBM and Hitachi Data Systems (HDS). | | | According to John Campbell, principal consultant with technology consultants CITL, the move has come just in time for Amdahl. | | | 'The Millennium Cmos technology that Amdahl is working on will leap-frog IBM's G4 and HDS but it will not be available until the first quarter of next year - they need some breathing space and Fujitsu's cash will help them there.' |
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http://www.financialdirector.co.uk/news/it/33278
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| | Presseservice - Pressemitteilung der Amdahl Deutschland vom 23.7.2001 um 14:00 Uhr |
| | Amdahl stellt seinen Kunden hierfür qualifizierte Fachkräfte und umfassendes Prozess-Know-how zur Verfügung, um unterschiedlichste Technologien nahtlos mit den Geschäftsprozessen zu verknüpfen und optimal auf die speziellen Anforderungen jedes einzelnen Unternehmens auszurichten. | | | Die Amdahl Corporation, Sunnyvale, Kalifornien, gibt die Erneuerung ihres „iForce Systems Integrator“-Vertrages mit Sun Microsystems Inc. bekannt. | | | Die neue Vereinbarung erweitert die seit 1993 bestehende strategische Partnerschaft bis mindestens 2004, mit automatischer Verlängerung von weiteren zwei Jahren. |
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http://www.news4press.net/print.php3?id=1079
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| | NAME; Jørgen Amdahl |
| | /2/ Furnes, O and Amdahl J: "Computer Simulation Analysis of Offshore Collisions", Applied Ocean Research,Vol 2, No 3, 1980. | | | /39/ Amdahl, J., Skallerud, B. H., Eide, O. and Johansen, A.; "Recent Developments in Reassessment of jacket Structures Under Extreme Environmental Loading- Part II: Cyclic Capacity of Tubular Members".14.th Int. | | | /36/ Amdahl J. Johansen A. and Svanø G.: "Ultimate Capacity of Jack-ups Considering Foundation Behaviour", Int. |
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http://www.marin.ntnu.no/~jamda/cv-ordi-html..html
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| | 1.4.1 -Amdahl's law |
| | Their criticism is justified as long as one considers solving a particular problem of a fixed size (i.e., with a constant value of | | | depends on the number of processors and Amdahl's law loses much of its significance. | | | For example, when 10% of the code must be executed sequentially, the maximum speed-up is limited by 10, independent of the number of processors available. |
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http://www.epcc.ed.ac.uk/computing/training/document_archive/decomp-course/Decomposing.book_12.html
(249 words)
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| | AMDAHL'S LAW FOR PARALLEL SPEEDUP |
| | Moreover, Amdahl's Law as presented ignores many of the realities of computing. | | | If Amdahl's law shows greatly diminished returns on a parallel computer, we ask again Why supercomputers? | | | Among the idealizations we ahve made are (i) parallelization is free, communication is free; (ii) parallel operation is a multiple of sequential operation, without changing data structures or operational design. |
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http://www.math.buffalo.edu/~pitman/courses/cor501/HPC1/node11.html
(310 words)
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| | Amdahl has new GSS 4900 disks |
| | Amdahl has announced its GSS 4900 modular storage system which, when configured with up to four storage arrays, is said to handle up to 240,000 I/Os per second or data rates of over 1GB/s. | | | The unit includes its own integrated SAN, promising better performance, non-disruptive growth, a centralized storage pool, centralized management, and LAN-free and server-less back-ups. |
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http://www.xephon.com/news/00080407.html
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| | Amazon.com: There Are No Electrons: Books: Kenn Amdahl |
| | The book got me over my 'procrastination' hump and into learning electronics. | | | Amazon.com: There Are No Electrons: Books: Kenn Amdahl | | | Amdahl was impressed that his children could comprehend the entire Star Wars universe after watching the movie for 2 hours, and he figures he could do the same with electronics. |
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http://www.amazon.com/exec/obidos/tg/detail/-/0962781592?v=glance
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| | Fujitsu Commences Tender to Purchase All Outstanding Shares of Amdahl |
| | Amdahl had revenues last year of $1.63 billion, two-thirds of which came from information processing and software and the remainder from the sale of computer hardware, including large-scale mainframe computers, mid-range servers and data storage devices. | | | Statements made in this news release that state the Company's or management's intentions, hopes, beliefs, expectations or predictions for the future are forward-looking statements that involve risk and uncertainties. | | | In addition to the factors set forth above, other important factors that could cause actual results to differ materially include, but are not limited to, projected financial results and industry-wide market factors. |
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http://pr.fujitsu.com/jp/news/1997/Aug/tender.html
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| | Amdahl forced to adapt mainframe - vnunet.com |
| | Stone said the models would feature improvements both in the hardware and software, including a feature allowing users to increase capacity by incremental steps. | | | Because mainframe software licence fees are generally charged on the basis of machine capacity, this left some users overpaying for their software. | | | Instead of having to upgrade by a full processor, users can add on an additional processor with a lower performance rating, meaning they don't have to pay the full upgrade cost on their software licensing. |
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http://www.vnunet.com/news/85119
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| | ISO ELECTS CITIBANK MANAGING DIRECTOR AND AMDAHL CEO TO BOARD |
| | He served as executive vice president of Amdahl Systems Group responsible for all computer hardware products, systems-support services, and the field sales force from 1995 to1997. | | | Amdahl is a major supplier of information-technology services, software, and hardware. | | | He received a bachelor of science degree with honors from Providence College in 1979. |
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http://www.iso.com/press_releases/1999/12_16_99.html
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| | amdahl's law - OneLook Dictionary Search |
| | Amdahl's Law : Free On-line Dictionary of Computing [home, info] | | | Amdahl's Law : FOLDOP - Free On Line Dictionary Of Philosophy [home, info] | | | Tip: Click on the first link on a line below to go directly to a page where "amdahl's law" is defined. |
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http://www.onelook.com/?w=amdahl%27s+law
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| | Amdahl to take on Big Blue CNET News.com |
| | Older generations of mainframes used so-called bipolar technology, which was more costly to make. | | | Amdahl, the No. 3 maker of IBM-compatible mainframes, plans to roll out systems in the first quarter of next year that will be faster than IBM "big iron" coming this August. | | | Amdahl's 800 Series can scale up to 12 processors per system and, like IBM's, are designed using the lower-cost CMOS (complimentary metal oxide semiconductor) architecture, which Amdahl began offering with its 700 Series in February. |
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http://news.com.com/News/Item/0,4,23449,00.html?st.ne.fd.mdh
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| | IT-Director.com: Fujitsu rejigs Amdahl |
| | Future hardware business, conducted via Fujitsu Technology Solutions, will focus on Fujitsu or Sun hardware running Solaris. | | | The example given of infraCare in action was of the Sabre airline booking system, which is serviced by infraCare in the form of Amdahl, ICL and Fujitsu Telecoms (for the network). | | | And Amdahl undoubtedly has most of the credentials to do the job, having spent its life in the mainframe data centre game; few know it better. |
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http://www.it-director.com/article.php?articleid=1662&SESSID=7f57fea60dc633d2200ebad3bd0a390c
(760 words)
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| | Fujitsu cuts Amdahl staff by 20% |
| | The reductions stem from Amdahl's decision to stop making newer versions of mainframe computers. | | | Editor's Summary: Fujitsu said it will cut its staff by 20%. | | | The Tokyo-based company will eliminate 400 to 500 jobs at Amdahl in Calif., which currently employs about 2,600. |
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http://search400.techtarget.com/newsItem/0,289139,sid3_gci504156,00.html
(63 words)
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| | Amdahl's latest mainframe is choked by parts shortage - Webact!ve |
| | How would you like to work right at the cutting edge of software innovation? | | | Independent analyst Phil Paine noted that both IBM and Amdahl are dependent on parts refurbished from old mainframes for many of their products, particularly when there is a manufacturing problem. | | | This sector of the market has been an easy target market for Unix vendors. |
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http://www.webactivemagazine.co.uk/2111227
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| | home |
| | It was formed in 1990 to publish Kenn Amdahl's book, There Are No Electrons: Electronics for Earthlings.It has grown since then, but not much. | | | books science math mathematics book fishing kenn amdahl paul debris barefoot ePconomics calculus electrons algebra unplugged cat cats education curriculum physics middle school broomfield colorado publisher cipa paw kids electronics earthlings introduction publisher publish broomfield colorado co colo | | | Clearwater Publishing Company is a small, independent book publisher in Broomfield, Colorado. |
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http://www.clearwaterpublishing.com
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| | Presseservice - Pressemitteilung der Amdahl Deutschland vom 3.4.2001 um 16:37 Uhr |
| | Amdahl bietet Support-Services für IT-Infrastrukturen mit international einheitlichen Richtlinien und Qualitätsstandards | | | Amdahl verbindet eigene und führende Hard- und Software-Angebote von Dritten mit umfangreichen Dienstleistungen zu maßgeschneiderten Lösungen.Amdahl ist eine hundertprozentige Tochter von Fujitsu Limited, einem der führenden Hersteller von IT-Lösungen. | | | InfraCare garantiert Unternehmen die optimale Betreuung ihrer unternehmenskritischen IT-Umgebungen — dafür ste-hen über 65.000 IT-Spezialisten rund um die Uhr an 365 Tagen im Jahr zur Verfügung.Amdahl bietet InfraCare als internationale Dienstleistung in Partner-schaft mit Fujitsu und ICL an. |
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http://www.news4press.net/print.php3?id=725
(276 words)
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| | : TCP/IP for Amdahl UTS System V |
| | Previous message: William C. VerSteeg: "Zero windows in SUN Unix" | | | We are looking for some way to run TCP/IP from our UTS UN*X system. | | | being run as a virtual machine on an Amdahl 5860 under VM/SP HPO Rel. |
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http://boom.cs.ucl.ac.uk/multimedia/misc/tcp_ip/8801.mm.www/0252.html
(256 words)
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| | Dictionary.com/amdahl corporation |
| | The Free On-line Dictionary of Computing, © 1993-2005 Denis Howe | | | In 1997 Amdahl became a division of Fujitsu. | | | Amdahl products are sold in more than 30 countries for use in |
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http://dictionary.reference.com/search?q=amdahl%3Cbr%3E%20corporation
(84 words)
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| | Information Directory amdahl |
| | Calculus for Cats by Kenn Amdahl ISBN 096278155X 096278155X Paperback book Science... | | | Originally founded by IBM System/360 architect Gene Amdahl. | | | Amdahl plans to roll out new storage integration services and resell the storage systems of its parent company Fujitsu - entering the highly competitive sector just as leading storage vendors are getting battered by a dramatic drop-off in demand. |
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http://www.digital-tips.com/amd/amdahl.htm
(492 words)
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| | Amdahl’s Law |
| | Amdahl’s is the law of diminishing returns as applied to the parallel and serial sections of code | | | Lets say the execution time of a code is T where: | | | Thus if ts is 10% of T the maximum speedup is only 10 even if we use infinite parallelism to reduce tp to 0 |
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http://www-ist.massey.ac.nz/~crjessho/comp_net/Ch2-99/sld013.htm
(78 words)
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| | GENE AMDAHL - Definition |
| | A former IBM engineer who founded Amdahl Corporation. |
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http://www.hyperdictionary.com/dictionary/Gene+Amdahl
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| | Amdahl's Law |
| | Amdahl's law states that the performance improvement to be gained from using some faster mode of execution is limited by the fraction of the time the faster mode can be used. |
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http://www.cs.iastate.edu/~prabhu/Tutorial/CACHE/amdahl.html
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