convex 3880 using etime

From: Hong Huang (honhuang@csd.uwm.edu)
Date: Thu Oct 26 1995 - 19:35:11 CDT


Convex 3880 60 Mhz ( I think ) 8 cpus
fc -O2 ( -O2 does not parallelize code )
----------------------------------------------
 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 31 microseconds
 The tests below will each take a time on the order
 of 86536 microseconds
    (= 2791 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: 365.9742 0.0897 0.0874 0.0934
Scaling : 368.8030 0.0903 0.0868 0.0996
Summing : 377.3291 0.1330 0.1272 0.1412
SAXPYing : 376.2769 0.1312 0.1276 0.1370
 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 ( expected procesors = 2. It is slower than 1 cpu !!! or is it
normalized so that it is slower per cpu ? )
----------------------------------------------
 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 31 microseconds
 The tests below will each take a time on the order
 of 100846 microseconds
    (= 3253 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: 306.7988 0.1112 0.1043 0.1243
Scaling : 314.4627 0.1090 0.1018 0.1156
Summing : 334.7727 0.1558 0.1434 0.1623
SAXPYing : 325.3006 0.1601 0.1476 0.1826
 Sum of a is : 2.306601562499039E+018
 Sum of b is : 4.613203125000709E+017
 Sum of c is : 6.150937500016563E+017

fc -O3 -ep 4 ( expected procesors = 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 34 microseconds
 The tests below will each take a time on the order
 of 101681 microseconds
    (= 2991 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: 319.8920 0.1075 0.1000 0.1167
Scaling : 318.2959 0.1074 0.1005 0.1154
Summing : 328.3630 0.1559 0.1462 0.1705
SAXPYing : 327.7035 0.1557 0.1465 0.1786
 Sum of a is : 2.306601562502556E+018
 Sum of b is : 4.613203125007079E+017
 Sum of c is : 6.150937500021250E+017

fc -O3 -ep 6 ( expected procesors = 6. )
----------------------------------------------
 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 32 microseconds
 The tests below will each take a time on the order
 of 101675 microseconds
    (= 3177 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: 318.4620 0.1078 0.1005 0.1189
Scaling : 324.0737 0.1080 0.0987 0.1297
Summing : 339.3953 0.1495 0.1414 0.1559
SAXPYing : 325.2607 0.1539 0.1476 0.1618
 Sum of a is : 2.306601562509883E+018
 Sum of b is : 4.613203125012425E+017
 Sum of c is : 6.150937500025938E+017

fc -O3 -ep 8 ( expected procesors = 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 30 microseconds
 The tests below will each take a time on the order
 of 109552 microseconds
    (= 3652 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: 328.4868 0.1085 0.0974 0.1261
Scaling : 327.9122 0.1042 0.0976 0.1235
Summing : 344.4023 0.1524 0.1394 0.1747
SAXPYing : 345.7153 0.1536 0.1388 0.1810
 Sum of a is : 2.306601562516181E+018
 Sum of b is : 4.613203124989079E+017
 Sum of c is : 6.150937500030625E+017



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