stream_d results

From: Roberto Innocente (innocente@tsmi19.sissa.it)
Date: Mon Jul 20 1992 - 10:36:50 CDT

        I'm including stream_d results for IBM rs/6000 550 and 560.
        The programs were compiled with xlf fortran v 2.2
                xlf -O -P -Wp,-ea2478j stream_d.f

        I used n = 1000000 but the results varied by more then 10%
        between the runs.
        In any case the results on the 550 were superior to the
        results I found in your table for the 950.

        regards

On the rs/6000 560:

--------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 44.9999988079071045 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: 228.5716 .0731 .0700 .0800
Scaling : 228.5713 .0804 .0700 .0900
Summing : 240.0002 .1104 .1000 .1300
SAXPYing : 240.0002 .1082 .1000 .1200

on the rs/6000 - 550
--------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLEPRECISION word
--------------------------------------
 Timing calibration ; time = 50.9999971836805344 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: 240.0002 .0724 .0600 .0800
Scaling : 240.0002 .0794 .0600 .0900
Summing : 196.3638 .1172 .1100 .1300
SAXPYing : 216.0002 .1146 .1000 .1400 

--
Roberto Innocente  
SISSA Scuola Internazionale Superiore di Studi Avanzati
Via Beirut 4 - 34014 TRIESTE - Italy
Phone +39-40-3787541 Fax   +39-40-3787528
Internet: innocente@sissa.it Bitnet: innocent@ITSSISSA

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