External Memory Algorithms and Data Structures

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Transcript of External Memory Algorithms and Data Structures

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    memoryInternalmemory

    Internalmemory

    CPU CPUCPU

    D 1DD

    Internal

    1D

    D

    Internal memory

    CPU

    Interconnection network

    (a) (b)

    D

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    21

    1

    2

    xx

    y

    y1

    1 2xx

    yy

    x2

    1

    q

    q

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    a

    b

    a

    a

    b

    c

    bc bc

    b bba

    a ba ba b a

    4

    56 6

    6 10 4 7 7 7 8

    3

    0

    abaabbabba

    bcbcbbba

    bcbcbba

    bcbcabb

    bcbcaba

    abac

    abaaba

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    0 0

    0

    1000

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    4000

    5000

    6000

    7000

    0 100000 200000 300000 400000 500000 600000 700000 800000 900000 1e+06

    Time(seconds)

    Number of rectangles

    "QPBSM""MPBSM"

    "SSSJ"

    0

    200

    400

    600

    800

    1000

    0 200000 400000 600000 800000 1e+06

    Time(seconds)

    Number of rectangles

    "MPBSM""QPBSM"

    "SSSJ"

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