Result of Stream by John D. McCalpin

From: Juan Uys (juanmuys@hotmail.com)
Date: Mon Apr 11 2005 - 15:40:34 CDT

  • Next message: Paul Saxe: "STREAM results on a dual Opteron 246"

    AMD64 2.4GHz (2.6.9-1.667 #1 Tue Nov 2 14:50:10 EST 2004 x86_64 x86_64 x86_64 GNU/Linux)
    Motherboard: K8V Deluxe
    RAM: 2x1GB Kingston HyperX 3200 K2/2G 2.5CL with ECC
    Compiler: Thread model: posix
    gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)
    Flags: -O

    I'm booted into Fedora Core 3 running Gnome and a couple of apps.

    Is there anything I can do to get better results? Thanks! :)

    Result:
    -------------------------------------------------------------
    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 44392 microseconds.
       (= 44392 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) Avg time Min time Max time
    Copy: 1908.3994 0.0169 0.0168 0.0173
    Scale: 1902.7180 0.0169 0.0168 0.0172
    Add: 2123.2503 0.0227 0.0226 0.0231
    Triad: 2126.2327 0.0227 0.0226 0.0234
    -------------------------------------------------------------
    Solution Validates
    -------------------------------------------------------------



    This archive was generated by hypermail 2.1.4 : Mon Jun 13 2005 - 08:58:05 CDT