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From: SBPM Marc GINGOLD (marc@david.SACLAY.cea.fr)
Date: Tue Feb 25 1992 - 04:05:05 CST


Some tests:

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Alliant VFX80 3 processors fortran 4.3.42 -O
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 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 66.9029980897903 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
 Assign. : 41.6932 0.3798 0.3454 0.3554
 Scaling : 41.5813 0.3805 0.3463 0.3566
 Summing : 43.0837 0.5513 0.5013 0.5159
 SAXPYing : 43.0082 0.5516 0.5022 0.5133
--------------------------------------
 Single precision appears to have 7 digits of accuracy
 Assuming 4 bytes per default REAL word
--------------------------------------
 Timing calibration ; time = 46.18700 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 23.7530 0.3049 0.3031 0.3092
Scaling : 23.7545 0.3056 0.3031 0.3096
Summing : 25.1766 0.4325 0.4290 0.4362
SAXPYing : 25.2714 0.4314 0.4274 0.4409
======================================
IBM RS6000 320
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--------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 43.0000000000000000 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 68.5714 .0791 .0700 .0800
Scaling : 60.0000 .0800 .0800 .0800
Summing : 65.4545 .1190 .1100 .1200
SAXPYing : 65.4545 .1121 .1100 .1200
--------------------------------------
 Single precision appears to have 7 digits of accuracy
 Assuming 4 bytes per default REAL word
--------------------------------------
 Timing calibration ; time = 97.00000000 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 48.0000 .1594 .1500 .1900
Scaling : 36.0000 .2262 .2000 .2400
Summing : 41.5385 .2801 .2600 .3800
SAXPYing : 43.2000 .2651 .2500 .2700
======================================
IBM RS6000 320H
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*** Liste des alias ==> Commande alias ***
--------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 31.0000000000000000 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 96.0000 .0572 .0500 .0600
Scaling : 96.0000 .0591 .0500 .0600
Summing : 90.0000 .0875 .0800 .1100
SAXPYing : 90.0000 .0831 .0800 .0900
*** Liste des alias ==> Commande alias ***
--------------------------------------
 Single precision appears to have 7 digits of accuracy
 Assuming 4 bytes per default REAL word
--------------------------------------
 Timing calibration ; time = 52.00000000 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 60.0001 .1200 .1200 .1200
Scaling : 40.0000 .1800 .1800 .1800
Summing : 54.0001 .2010 .2000 .2100
SAXPYing : 54.0001 .2000 .2000 .2000
======================================
IBM RS6000 530
======================================
*** Liste des alias ==> Commande alias ***
--------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 30.0000000000000000 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 120.0000 .0422 .0400 .0500
Scaling : 120.0000 .0463 .0400 .0500
Summing : 102.8571 .0700 .0700 .0700
SAXPYing : 120.0000 .0600 .0600 .0600
*** Liste des alias ==> Commande alias ***
--------------------------------------
 Single precision appears to have 7 digits of accuracy
 Assuming 4 bytes per default REAL word
--------------------------------------
 Timing calibration ; time = 53.00000381 hundredths of a second
 Increase the size of the arrays if this is <30 and your clock precision is =<1/100 second
 ---------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Assignment: 72.0001 .1031 .1000 .1100
Scaling : 45.0000 .1671 .1600 .1700
Summing : 60.0001 .1820 .1800 .1900
SAXPYing : 60.0001 .1831 .1800 .1900

Truly Yours.



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