Re: Stream Results - Sun E10000

From: Brian Whitney (Brian.Whitney@West.Sun.COM)
Date: Wed Jun 16 1999 - 17:54:47 CDT


Ran a slightly larger data set size (yes, 300,000,000)...

I think I like these results, they are making more sense. Now
to see if smaller size make sense...

Brian

keeper@sae3:/home/keeper/stream% 208) setenv PARALLEL 64
keeper@sae3:/home/keeper/stream% 209) pstx2-64
----------------------------------------------
 Double precision appears to have 16 digits of accuracy
 Assuming 8 bytes per DOUBLE PRECISION word
----------------------------------------------
 Array size = 300000000
 Offset = 0
 The total memory requirement is 6866 MB
 You are running each test 10 times
 The *best* time for each test is used
 ----------------------------------------------------
 Your clock granularity appears to be less than one microsecond
 Your clock granularity/precision appears to be 1 microseconds
 The tests below will each take a time on the order
 of 605053 microseconds
    (= 605053 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
Copy: 12071.9246 0.4192 0.3976 0.4464
Scale: 7967.1486 0.6185 0.6025 0.6578
Add: 8497.6855 0.8515 0.8473 0.8592
Triad: 8590.0299 0.8652 0.8382 0.8755
 Sum of a is = 3.4599023433963D+20
 Sum of b is = 6.9198046533463D+19
 Sum of c is = 9.2264062741574D+19
 Note: Nonstandard floating-point mode enabled
 See the Numerical Computation Guide, ieee_sun(3M)



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