Stream results for an HP Integrity rx4640

From: Kirby L. Collins (kcollins@rsn.hp.com)
Date: Mon Nov 08 2004 - 11:09:06 CST

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    Below are single cpu stream results for an HP Integrity rx4640-8, configured as follows:

    HP Integrity rx4640-8
    4x1.6GHz/9M Itanium 2 processors
    32GB memory (16x2GB DIMMs)
    HP-UX 11.23.09

    ----------------------------------------------
     Double precision appears to have 16 digits of accuracy
     Assuming 8 bytes per DOUBLE PRECISION word
    ----------------------------------------------
     Array size = 32000960
     Offset = 0
     The total memory requirement is 732 MB
     You are running each test 10 times
     --
     The *best* time for each test is used
     *EXCLUDING* the first and last iterations
     ----------------------------------------------------
     Your clock granularity/precision appears to be 1 microseconds
     ----------------------------------------------------
    Function Rate (MB/s) Avg time Min time Max time
    Copy: 3428.0361 0.1495 0.1494 0.1496
    Scale: 3435.7911 0.1493 0.1490 0.1498
    Add: 3931.9228 0.1961 0.1953 0.2007
    Triad: 3938.9856 0.1952 0.1950 0.1955
     ----------------------------------------------------
     Solution Validates!
     ----------------------------------------------------

    I used Revision 5.0 of the stream code, modified to set the array size and to place the a,b,c arrays in common:

    63c63
    < PARAMETER (n=2000000,offset=0,ndim=n+offset,ntimes=10) 

    ---
>       PARAMETER (n=32000960,offset=0,ndim=n+offset,ntimes=10)
88c88
< *     COMMON a,b,c
---
>       COMMON a,b,c

    and compiled with HP Fortran 90 :

    f90 -o stream_d.uni +O3 +DSitanium2 +DD64 +Onoopenmp +extend_source +autodbl4 +noppu -Wl,+pd,16M stream_d.uni.f second_wall.o

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