convex 3880 using wallclock.c

From: Hong Huang (honhuang@csd.uwm.edu)
Date: Thu Oct 26 1995 - 19:35:41 CDT


convex 3880 60 Mhz 8 cpu
wallclock.c used ( instead etime )
fc -O2
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 2000000
 Offset = 0
 The total memory requirement is 45 MB
 You are running each test 10 times
 The *best* time for each test is used
 ----------------------------------------------------
 Your clock granularity/precision appears to be 15 microseconds
 The tests below will each take a time on the order
 of 252169 microseconds
    (= 16811 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
Assignment: 347.8977 0.2787 0.0920 0.5357
Scaling : 336.7000 0.1504 0.0950 0.2036
Summing : 352.3401 0.2174 0.1362 0.2734
SAXPYing : 262.3910 0.4937 0.1829 0.6478
 Sum of a is : 2.306601562521719E+018
 Sum of b is : 4.613203124964115E+017
 Sum of c is : 6.150937500035312E+017

fc -O3 -ep 2
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 2000000
 Offset = 0
 The total memory requirement is 45 MB
 You are running each test 10 times
 The *best* time for each test is used
 ----------------------------------------------------
 Your clock granularity/precision appears to be 16 microseconds
 The tests below will each take a time on the order
 of 382712 microseconds
    (= 23920 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
Assignment: 806.5945 0.3154 0.0397 0.5903
Scaling : 845.8230 0.3170 0.0378 0.6728
Summing : 992.5144 0.3564 0.0484 0.6879
SAXPYing : 1101.1472 0.4188 0.0436 0.8846
 Sum of a is : 2.306601562513650E+018
 Sum of b is : 4.613203125016440E+017
 Sum of c is : 6.150937500028342E+017

fc -O3 -ep 4
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 2000000
 Offset = 0
 The total memory requirement is 45 MB
 You are running each test 10 times
 The *best* time for each test is used
 ----------------------------------------------------
 Your clock granularity/precision appears to be 16 microseconds
 The tests below will each take a time on the order
 of 99230 microseconds
    (= 6202 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
Assignment: 290.5105 0.2280 0.1102 0.4610
Scaling : 1244.6064 0.3024 0.0257 0.6172
Summing : 852.3619 0.3805 0.0563 0.7165
SAXPYing : 252.4069 0.4290 0.1902 0.7508
 Sum of a is : 2.306601562507281E+018
 Sum of b is : 4.613203125012425E+017
 Sum of c is : 6.150937500025938E+017

fc -O3 -ep 8
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 2000000
 Offset = 0
 The total memory requirement is 45 MB
 You are running each test 10 times
 The *best* time for each test is used
 ----------------------------------------------------
 Your clock granularity/precision appears to be 16 microseconds
 The tests below will each take a time on the order
 of 63037 microseconds
    (= 3940 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
Assignment: 290.6291 0.3425 0.1101 0.6406
Scaling : 1184.2671 0.2118 0.0270 0.4560
Summing : 800.8011 0.5236 0.0599 0.7182
SAXPYing : 1026.4512 0.3969 0.0468 0.8154
 Sum of a is : 2.306601562499228E+018
 Sum of b is : 4.613203125000753E+017
 Sum of c is : 6.150937500013737E+017



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