Saturday, February 9, 2019

Multiprocessing Essay -- essays research papers

par all in allel treat multiprocessing refers to a computer systems ability to support more than(prenominal) than one process or program at the same time. Multiprocessing run systems enable several programs to run concurrently. UNIX is one of the close widely use multiprocessing systems, but there are many others, including OS/2 for high-end personal computers and Windows NT for work groups. Multiprocessing systems are much more complicated than wholeness-process systems because the operating system must allocate resources to competing processes in the most efficient manner. (IBM Dictionary of Computing, Tenth Edition, McGraw-Hill, (1994)).Types of MultiprocessingSymmetric multiprocessing refers to the processing of programs by multiple processors that share a common operating system, shop and data path. A single copy of the operating system controls all processors. Symmetric multiprocessing units of this type are also referred to as share everything systems. These systems usually do not exceed 16 processors.(Image courtesy of serial Manufacturing)The most common uses of these types of systems are commercial servers of web applications such used in on line commerce. The advantages of this particular configuration are that they give the axe be easily upgraded by the addition of more processors. These processors are for sale to execute any of the given processes as soon as the operating system recognizes and configures the new hardware. However, the limitations of such a configuration are that with share memory, there is a strong emphasis on data manipulation. As each processor competes for a limited amount of shared memory, this limits the fastness and up-gradability of such a system. Manufacturers must rely on the development of faster, high capacity memory to everyplacecome this disadvantage. Currently symmetric multiprocessing computers pile address up to 14 gigabytes of physical memory and approximately 2 terabytes of storage. (Sequent Man ufacturing Inc., white papers 1998)Parallel ProcessingParallel processing is a form of information processing that emphasizes the concurrent manipulation of data elements be to one or more process solving a single problem. It is also referred to as a shared nothing system. These systems are undisturbed of many loosely connected nodes or P/M ... piss a result from a device.C.The number of results a device produces over a unit of time.D.The time it takes a device to retrieve the future(a) instruction.E.None of the above6.Which of the following operating systems does not support multiprocessing?A.Microsoft Windows NTB.UNIXC.OS/2D.LINUXE.All of the above support multiprocessing.7.Which of the following applications would benefit most by multiprocessing?A.A greathearted Word document.B.A large Excel spreadsheet.C.A video gameD.A large Multi-user Database.E.None of the above.8.LINUX is an off shoot of which multiprocessing operating system?A.UNIXB.Windows 98C.OS/2D.Windows NTE .MS DOS9.Which Pittsburgh University is currently developing new multiprocessing operating systems?A.University of Pittsburgh.B.Carnegie-Mellon UniversityC.Robert Morris CollegeD.Point putting surface CollegeE.None of the above10.Linus Torvalds isA.The inventor of UNIX operating systemB.The chairman of the board of Microsoft Corp.C.The inventor of LINUX operating systemD.The guy that cuts Packys grass.1. (C) 2. (A) 3.(A) 4.(A) 5.(C) 6.(E) 7.(D) 8.(A) 9.(B) 10.(C)

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