2What is a Supercomputer? Supercomputer is a broad term for one ofthe fastest computer currently available.Super computers were designed and builtto work on extremely large jobs that couldnot be handled by no other types ofcomputing systems.
3What is a Supercomputer? (cont’d) Supercomputers speed are measured infloating point operations per second(FLOPS) in units ofmegaflops (MFOPS)gigaflops (GFLOPS)teraflops (TFLOPS)
4What are Supercomputers Used For? scientific simulationsanimated graphicsanalysis of geological datanuclear energy research and meteorologycomputational fluid dynamics
5Early History Supercomputer. Seymour Clay made the first transistorized computer (CDC 1604) in 1964.In 1965 Cray developed CDC 6600, the first multithreading computer. Cray then developed the CDC 7600 in 1970.Cray-1 supercomputers project started in 1972 and finished in 1974 and was twice as fast as the 7600 with a vector speed of 80 MFLOPS.
6Early History of Supercomputer. (cont’d) In 1990 Cray successful build Cray-4 the fastest supercomputer in the world at around 10 gigaflops and was smaller than a human brain.Cray died on October 5th 1996 at the age of 71 as a result of injuries sustained in an automobile accident.Currently the fastest computer isIBM BlueGene/L at around 73teraflops (TFLOPS)
7Parallel Processing Two common type used in supercomputers. Cluster Multi-Processor
8Cluster Computers Cluster computers are two or more computers working parallel to achievegreater performances. Cluster computersbreakup work among the computers in thecluster.
9Cluster Computers (cont’d) Each computer in the cluster is a cpu itself with its own processor, memory, and disk.The computers communicate with each other via an interconnecting bus.
10Xbox Cluster www.anandtech.com successfully built a XBOX Linux cluster consisting of 8 XBOXs.XBOX specs:PIII 733MHz 128K L2Seagate 5400RPM 8GB64MB Shared PC3200
12Multi-Processor A multi-processor computer has 2 or more cpus. Each processor is capable of runningdifferent program simultaneously (truemultitasking).
13Multi-Processor (cont’d) The cpus all shared the other parts of the computers: memory, disk system, bus, etc.Cpu communicate via memory and the system bus.Cheaper than cluster computers but does not perform as well.
14Advantages of Parallel Processing Costs are much cheaper than building one supercomputer.Highly scalable.
15Disadvantages of parallel processing. High overload – it is difficult to make many processor work together efficiently.It is difficult to write programs to utilize multiple processors at once in an efficient manner.