tuned STREAM on IBM eServer p5 550 (1650 MHz, 4 cpu)

From: Frank Johnston (fjohn@us.ibm.com)
Date: Mon Jul 12 2004 - 16:10:05 CDT

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    IBM eServer p5 550 (1650 MHz, 4 cpu, 36MB L3 cache)

     Requesting Large Pages
     Setting up for 2 CPUs per module
     Number of segments per array = 2
     CPU binding list : 0 2
     Shared Segment Pointer = 504403158265495552
     Shared Segment Pointer = 504403158802366464
     Shared Segment Pointer = 504403159339237376
     Segment Size (B) = 268435456 (MB = 256 )
     Array Size (B) = 536870912 (MB = 512 )
     Array Size (DW) = 67108864
     Num_threads = 4
     Num_threads = 4
     Num_threads = 4
     Num_threads = 4
     rebind: num_parthds is 4
     Starting Initialization
     Done With Initialization
     a(1) 1.00000000000000000
     b(M) 1.00000000000000000
     c(M) 1.00000000000000000
     Incremental Offset = 512
     Number of Threads = 4
    ----------------------------------------------
     Double precision appears to have 16 digits of accuracy
     Assuming 8 bytes per DOUBLE PRECISION word
    ----------------------------------------------
     Array size = 67077120
     Offset = 0
     The total memory requirement is 1535 MB
     You are running each test 5 times
     The *best* time for each test is used
     ----------------------------------------------------
     Your clock granularity appears to be less than one microsecond
     Your clock granularity/precision appears to be 1 microseconds
     The tests below will each take a time on the order
     of 178375 microseconds
        (= 178375 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) RMS time Min time Max time
    Copy: 6147.8265 .2993 .1746 .1915
    Scale: 6018.7554 .2995 .1783 .1785
    Add: 8772.2632 .3044 .1835 .1841
    Triad: 8986.1166 .3007 .1791 .1802
     Sum of a is = 101873376000000.000
     Sum of b is = 20374675200000.0000
     Sum of c is = 27166233600000.0000

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