From: John D Mccalpin (mccalpin@us.ibm.com)
Date: Thu Feb 24 2005 - 10:13:25 CST
To: mccalpin@us.ibm.com
cc:
From: Ly Vu/Austin/IBM@IBMUS
Subject: standard STREAM on IBM eServer p5 575 (1900 MHz, 8cpu)
These are standard STREAM results on an IBM eServer p5 575
with eight 1900 MHz cpus. This is a POWER5 SMP machine.
Large pages were used in all cases.
Function Rate (MB/s) Avg time Min time Max time
Copy: 34966.6146 .1232 .1228 .1235
Scale: 35035.0607 .1227 .1225 .1229
Add: 41076.3886 .1569 .1568 .1570
Triad: 41585.3956 .1553 .1548 .1556
Here is the full output file:
--------------------------------------------------
Requesting Large Pages
Setting up for 2 CPUs per module
Number of segments per array = 8
CPU binding list : 0 2 4 6 8 10 12 14
Shared Segment Pointer = 504403158265495552
Shared Segment Pointer = 504403160412979200
Shared Segment Pointer = 504403162560462848
Segment Size (B) = 268435456 (MB = 256 )
Array Size (B) = 2147483648 (MB = 2048 )
Array Size (DW) = 268435456
Num_threads = 16
Num_threads = 16
Num_threads =16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
Num_threads = 16
rebind: num_parthds is 16
Starting Initialization
Done With Initialization
a(1) 1.00000000000000000
b(M) 1.00000000000000000
c(M) 1.00000000000000000
Incremental Offset = 512
----------------------------------------------
Double precision appears to have 16 digits of accuracy
Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
Array size = 268303360
The total memory requirement is 6140 MB
You are running each test 5 times
--
The *best* time for each test is used
*EXCLUDING* the first and last iterations
----------------------------------------------------
Your clock granularity appears to be less than one microsecond
Your clock granularity/precision appears to be 1 microseconds=
----------------------------------------------------
Function Rate (MB/s) Avg time Min time Max time
Copy: 34966.6146 .1232 .1228 .1235
Scale: 35035.0607 .1227 .1225 .1229
Add: 41076.3886 .1569 .1568 .1570
Triad: 41585.3956 .1553 .1548 .1556
----------------------------------------------------
Solution Validates!
----------------------------------------------------
______________________________________________
Ly Vu
IBM Corp. - Austin, Texas.
RS/6000 Performance Analysis.
This archive was generated by hypermail 2.1.4 : Tue Mar 08 2005 - 07:42:51 CST