Here are some test results (stream_d) for a Sun SparcEngine ATx UltraIIi
system at 300Mhz:
Built with cc -fast (SC4.2)
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 1000000, Offset = 0
Total memory required = 22.9 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 58495 microseconds.
(= 58495 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: 192.1043 0.0848 0.0833 0.0918
Scale: 192.0584 0.0856 0.0833 0.0954
Add: 213.8258 0.1130 0.1122 0.1136
Triad: 213.2880 0.1136 0.1125 0.1163
Built with gcc -O2 (2.7.3)
-------------------------------------------------------------
This system uses 8 bytes per DOUBLE PRECISION word.
-------------------------------------------------------------
Array size = 1000000, Offset = 0
Total memory required = 22.9 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 59152 microseconds.
(= 59152 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: 184.7724 0.0884 0.0866 0.0951
Scale: 185.1294 0.0876 0.0864 0.0933
Add: 200.2236 0.1209 0.1199 0.1234
Triad: 198.5029 0.1225 0.1209 0.1248
Worse than I would have expected, compared to an Ultra2.
Ian Collins.
This archive was generated by hypermail 2b29 : Tue Apr 18 2000 - 05:23:07 CDT