a) Intel SE440BX Motherboard with integrated ISA Sound Card running FreeBSD
3.0 Current with 128MB PC100 Corsair Memory on a production/semi-busy
system.
b) cc -O stream_d.c second_cpu.c -o stream_d -lm
c)
ww# ./stream_d
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 4500000, Offset = 0
Total memory required = 103.0 MB.
Each test is run 10 times, but only
the *best* time for each is used.
-------------------------------------------------------------
Your clock granularity/precision appears to be 7812 microseconds.
Each test below will take on the order of 250000 microseconds.
(= 32 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.
-------------------------------------------------------------
Test #1:
Function Rate (MB/s) RMS time Min time Max time
Copy: 271.0588 0.2711 0.2656 0.2734
Scale: 271.0588 0.2672 0.2656 0.2734
Add: 321.4884 0.3422 0.3359 0.3438
Triad: 271.0588 0.3984 0.3984 0.3984
Test #2:
Function Rate (MB/s) RMS time Min time Max time
Copy: 271.0588 0.2747 0.2656 0.3203
Scale: 279.2727 0.2708 0.2578 0.3203
Add: 321.4884 0.3446 0.3359 0.3594
Triad: 271.0588 0.4008 0.3984 0.4141
Test #3:
Function Rate (MB/s) RMS time Min time Max time
Copy: 279.2727 0.2664 0.2578 0.2734
Scale: 271.0588 0.2672 0.2656 0.2734
Add: 329.1429 0.3438 0.3281 0.3516
Triad: 271.0588 0.4040 0.3984 0.4141
Test #4:
Function Rate (MB/s) RMS time Min time Max time
Copy: 279.2727 0.2688 0.2578 0.2812
Scale: 271.0588 0.2680 0.2656 0.2734
Add: 321.4884 0.3438 0.3359 0.3516
Triad: 271.0588 0.4016 0.3984 0.4062
Test #5:
Function Rate (MB/s) RMS time Min time Max time
Copy: 271.0588 0.2762 0.2656 0.3203
Scale: 279.2727 0.2740 0.2578 0.3203
Add: 321.4884 0.3422 0.3359 0.3516
Triad: 271.0588 0.4024 0.3984 0.4141
Jon
______________________________________________________________________
Jon E. Mitchiner - jon@minotaur.com
Minotaur Technologies, LLC - http://www.minotaur.com - (703) 560-0683 (FAX)
This archive was generated by hypermail 2b29 : Tue Apr 18 2000 - 05:23:07 CDT