Hi,
Here is new results for IBM rs--6000/591.
xlf -O3 -qarch=pwr2 -qtune=pwr2 -bmaxdata:490000000
h.huang
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Double precision appears to have 16 digits of accuracy
Assuming 8 bytes per DOUBLE PRECISION word
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Array size = 20000000
Offset = 0
The total memory requirement is 457 MB
You are running each test 10 times
The *best* time for each test is used
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Your clock granularity/precision appears to be 10000 microseconds
The tests below will each take a time on the order
of 340000 microseconds
(= 34 clock ticks)
Increase the size of the arrays if this shows that
you are not getting at least 20 clock ticks per test.
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WARNING: The above is only a rough guideline.
For best results, please be sure you know the
precision of your system timer.
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Function Rate (MB/s) RMS time Min time Max time
Assignment: 711.1111 .4982 .4500 .5200
Scaling : 653.0612 .5034 .4900 .5100
Summing : 727.2727 .6868 .6600 .7000
SAXPYing : 800.0000 .6706 .6000 .7000
Sum of a is : 0.230660156298026516E+20
Sum of b is : 0.461320312627832730E+19
Sum of c is : 0.615093749807796838E+19
This archive was generated by hypermail 2b29 : Tue Apr 18 2000 - 05:23:05 CDT