STREAM submission with Portland Group Compilers on AMD Opteron

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Hi John,

Enclosed is an updated result for your STREAM web site. We have
determined that when using the Portland Group Compilers (PGI) the
optimal flag set for STREAM is "-O2 -Mvect=sse -Mnontemporal". When
running the OMP version, add the "-mp" flag. Hopefully, this
information will help the users of the STREAM benchmark to achieve the
highest possible results!

System:

Model Name: AMD Opteron(tm) Processor 248
cpu Mhz: 2200
Motherboard: ASUS SK8N
Cache Size: 1024 KB
Memory: 4x512MB, DDR400, PC3200, Corsair, CL2
Operating System: SuSE 9.0
Kernel: 2.4.21-102-default

Compiler:
The Portland Group (PGI) pgcc Release 5.2-1

Output:
% pgcc -O2 -Mvect=sse -Mnontemporal -V second_wall.c stream_d.c -o stream

pgcc 5.2-1
Copyright 1989-2000, The Portland Group, Inc. All Rights Reserved.
Copyright 2000-2004, STMicroelectronics, Inc. All Rights Reserved.
second_wall.c:
PGC/x86-64 Linux/x86-64 5.2-1
Copyright 1989-2000, The Portland Group, Inc. All Rights Reserved.
Copyright 2000-2004, STMicroelectronics, Inc. All Rights Reserved.
stream_d.c:
PGC/x86-64 Linux/x86-64 5.2-1
Copyright 1989-2000, The Portland Group, Inc. All Rights Reserved.
Copyright 2000-2004, STMicroelectronics, Inc. All Rights Reserved.

% stream
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 2000000, Offset = 0
Total memory required = 45.8 MB.
Each test is run 100 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 16489 microseconds.
    (= 16489 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: 4302.8156 0.0075 0.0074 0.0078
Scale: 4251.4326 0.0076 0.0075 0.0077
Add: 4496.9085 0.0107 0.0107 0.0109
Triad: 4457.6785 0.0108 0.0108 0.0110

Sincerely,
Mathew Colgrove
QA Engineer
The Portland Group

-- 
----------------------------------------------------------------------
Mathew Colgrove - Quality Assurance
Advanced Compilers and Tools AST Portland Lab, STMicroelectronics
mathew.colgrove@st.com  (503) 682-2806  (voice) (503) 682-2637  (FAX)

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