SGI Origin 300; R14000 500mhz; 16cpu STREAM result

From: Kumaran Kalyanasundaram (kumaran@vonkarman.chicago.sgi.com)
Date: Tue Jan 22 2002 - 15:25:26 CST

  • Next message: Kumaran Kalyanasundaram: "SGI Origin 300; R14000 500mhz; 32cpu STREAM result"

    SGI Origin 300
    R14000 500mhz
    2mb L2 cache

    ----------------------------------------------
     Double precision appears to have 16 digits of accuracy
     Assuming 8 bytes per DOUBLE PRECISION word
    ----------------------------------------------
     Array size = 16000000
     Offset = 0
     The total memory requirement is 366 MB
     You are running each test 4 times
     The *best* time for each test is used
     ----------------------------------------------------
     Your clock granularity/precision appears to be 1 microseconds
     The tests below will each take a time on the order
     of 38945 microseconds
        (= 38945 clock ticks)
     Increase the size of the arrays if this shows that
     you are not getting at least 20 clock ticks per test.
     ----------------------------------------------------
     WARNING -- The above is only a rough guideline.
     For best results, please be sure you know the
     precision of your system timer.
     ----------------------------------------------------
    Function Rate (MB/s) Min time Max time Mean time RMS time Median
    Copy: 5512.33 0.0464 0.0471 0.0469 0.0469 0.0467
    Scale: 5505.92 0.0465 0.0469 0.0467 0.0467 0.0467
    Add: 6178.18 0.0622 0.0628 0.0626 0.0626 0.0627
    Triad: 6417.15 0.0598 0.0607 0.0602 0.0602 0.0599
    -----------------------------------------------------------------------------
     All times are
        0.0470 0.0467 0.0622 0.0607
        0.0464 0.0469 0.0627 0.0598
        0.0470 0.0465 0.0628 0.0599
        0.0471 0.0465 0.0628 0.0604
    -----------------------------------------------------------------------------
     Sum of a is = 25312.50000057253
     Sum of b is = 5062.500000004040
     Sum of c is = 6749.999999831864

            Kumaran Kalyanasundaram, PhD Performance Engineering
        SGI 2060 E. Algonquin Rd, Schaumburg, IL 60504 kumaran@sgi.com
                   Ph. (847) 925 2913 Fax (847) 925 2930

                           
      



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