From: Frank Johnston (fjohn@us.ibm.com)
Date: Mon Jul 12 2004 - 16:09:54 CDT
IBM eServer p5 570 (1900 MHz, 16 cpu, 36MB L3 cache) with DDR2 memory.
Tuned STREAM Benchmark Output for Submission:
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 = 1536
Number of Threads = 16
----------------------------------------------
Double precision appears to have 16 digits of accuracy
Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
Array size = 268305408
Offset = 0
The total memory requirement is 6141 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 73990 microseconds
(= 73990 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: 40465.2741 .2417 .1061 .1099
Scale: 40132.7332 .2418 .1070 .1073
Add: 44906.5518 .2722 .1434 .1436
Triad: 45186.8670 .2714 .1425 .1427
Sum of a is = 407484806118750.000
Sum of b is = 81496961223750.0000
Sum of c is = 108662614965000.000
This archive was generated by hypermail 2.1.4 : Tue Jul 13 2004 - 08:50:46 CDT