STREAM submission with PathScale EKO Compiler on AMD Opteron

From: Tom Elken (
Date: Tue Jun 15 2004 - 16:01:11 CDT

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    Hi John,

    Please post these results to the STREAM web site. I believe they are the highest
    single-CPU results for any AMD or Intel CPU based systems as of June 15, 2004. 1.1 is
    the latest released version of our compiler. Pardon the copied text from our SPEC

                 Compiler: PathScale EKO Compiler Suite, Release 1.1
               Model Name: ASUS SK8N Motherboard, AMD Opteron (TM) Model 248
                      CPU: AMD Opteron 248
                  CPU MHz: 2200
                      FPU: Integrated
           CPU(s) enabled: 1 core, 1 chip, 1 core/chip
          Secondary Cache: 1024KB (I+D) on chip
                   Memory: 4x512MB, DDR400, PC3200, Corsair, CL2
         Operating System: SuSE Linux 9.0 (AMD64) 2.4.21-102-default

    > pathcc -Ofast -lm stream_d.c second_wall.c -o 1.1ccOfast
    > ./1.1ccOfast
    This system uses 8 bytes per DOUBLE PRECISION word.
    Array size = 2000000, Offset = 0
    Total memory required = 45.8 MB.
    Each test is run 10 times, but only
    the *best* time for each is used.
    Your clock granularity/precision appears to be 1 microseconds.
    Each test below will take on the order of 7885 microseconds.
        (= 7885 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: 4613.5614 0.0070 0.0069 0.0072
    Scale: 4520.3330 0.0071 0.0071 0.0071
    Add: 4558.4067 0.0106 0.0105 0.0107
    Triad: 4554.9003 0.0105 0.0105 0.0106

    Best regards,
    Tom Elken
    Manager Performance Engineering,
    PathScale, Inc.

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