tuned STREAM on IBM System p5 550 (4CPUs 2.1 GHz)

These are tuned STREAM results on an IBM System p5 550
with four 2.1 GHz cpus. This is a POWER5+ SMP machine.
Large pages were used in all cases.

Function Rate (MB/s) RMS time Min time Max time
Copy: 16255.32 .07 .07 .07
Scale: 16150.16 .07 .07 .07
Add: 20459.11 .08 .08 .08
Triad: 20721.89 .08 .08 .08

Here is the full output file:
--------------------------------------------------

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 = 2560
 Number of Threads = 4
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 67073024
 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 66588 microseconds
    (= 66588 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: 16255.32 .07 .07 .07
Scale: 16150.16 .07 .07 .07
Add: 20459.11 .08 .08 .08
Triad: 20721.89 .08 .08 .08
 Sum of a is = 101866931943750.000
 Sum of b is = 20373386388750.0000
 Sum of c is = 27164515185000.0000
______________________________________________
Ly Vu
IBM Corp. - Austin, Texas.
AIX/pSeries Performance
Phone : (512) 838-8228
Email : lyvu@us.ibm.com
Received on Mon Jul 24 18:33:00 2006