SGI Origin 300; R14000 500mhz; 8cpu STREAM result

From: Kumaran Kalyanasundaram (kumaran@vonkarman.chicago.sgi.com)
Date: Tue Jan 22 2002 - 15:25:09 CST

  • Next message: Kumaran Kalyanasundaram: "SGI Origin 300; R14000 500mhz; 16cpu 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 = 8000000
     Offset = 0
     The total memory requirement is 183 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 32774 microseconds
        (= 32774 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: 2831.72 0.0452 0.0459 0.0456 0.0456 0.0458
    Scale: 2808.76 0.0456 0.0464 0.0459 0.0459 0.0459
    Add: 3145.33 0.0610 0.0614 0.0613 0.0613 0.0613
    Triad: 3173.27 0.0605 0.0611 0.0608 0.0608 0.0607
    -----------------------------------------------------------------------------
     All times are
        0.0457 0.0456 0.0614 0.0605
        0.0459 0.0459 0.0612 0.0605
        0.0457 0.0459 0.0614 0.0609
        0.0452 0.0464 0.0610 0.0611
    -----------------------------------------------------------------------------
     Sum of a is = 25312.50000057252
     Sum of b is = 5062.500000004038
     Sum of c is = 6749.999999831861

            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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