From: Ly Vu (lyvu@us.ibm.com)
Date: Tue Aug 09 2005 - 10:00:07 CDT
These are standard STREAM results on an IBM eServer p5 575
with sixteen 1.5 GHz 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: 38218.6049 .1123 .1123 .1124
Scale: 37825.6681 .1135 .1135 .1136
Add: 42179.1238 .1527 .1527 .1528
Triad: 42631.8617 .1512 .1510 .1514
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 = 2560
----------------------------------------------
Double precision appears to have 16 digits of accuracy
Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
Array size = 268301312
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: 38218.6049 .1123 .1123 .1124
Scale: 37825.6681 .1135 .1135 .1136
Add: 42179.1238 .1527 .1527 .1528
Triad: 42631.8617 .1512 .1510 .1514
----------------------------------------------------
Solution Validates!
----------------------------------------------------
______________________________________________
Ly Vu
IBM Corp. - Austin, Texas.
RS/6000 Performance Analysis.
Phone : (512) 838-8228
Email : lyvu@us.ibm.com
This archive was generated by hypermail 2.1.4 : Fri Sep 02 2005 - 11:24:07 CDT