From: Kristian Elof Sørensen (elof@elof.dk)
Date: Tue Feb 05 2002 - 08:14:13 CST
Hi
Here are the results for a Compaq Evo N600c laptop. It's equipped with a
Mobile PIII running at 866 MHz with 133 MHz SDRAM. The OS is W2000.
Results are included for the NT binary you provide as well for gcc, the
results are very close.
With: gcc version 2.95.3-5 (cygwin special)
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 8000000, Offset = 0
Total memory required = 183.1 MB.
Each test is run 10 times, but only
the *best* time for each is used.
-------------------------------------------------------------
Your clock granularity/precision appears to be 10000 microseconds.
Each test below will take on the order of 299999 microseconds.
(= 29 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: 386.7069 0.3457 0.3310 0.3610
Scale: 365.7143 0.3625 0.3500 0.3710
Add: 478.8030 0.4148 0.4010 0.4500
Triad: 480.0000 0.4239 0.4000 0.4410
With the NT binary provided on your ftp site:
C:\prog\stream>wstream.exe 866 10
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 999936
Total memory required = 24.9 MB.
Each test is run 10 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 37471 microseconds.
(= 37471 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: 377.8052 0.0427 0.0423 0.0430
Scale: 376.1732 0.0429 0.0425 0.0432
Add: 481.8454 0.0502 0.0498 0.0507
Triad: 476.1251 0.0507 0.0504 0.0511
----------------------- http://www.elof.dk ----------------------
Kristian Elof Soerensen elof@elof.dk (+45) 45 93 92 02
This archive was generated by hypermail 2.1.4 : Sun Feb 10 2002 - 23:31:26 CST