Opteron 2220 STREAM results

These results were obtained on a Tyan S2915 motherboard with two Opteron
2220 CPUs (2.8 GHz, dual-core), with two dual-rank DDR2/667 (CAS 4)
DIMMs per channel (8 DIMMs total).

The system was running a Linux 2.6.5-7.244smp kernel and the STREAM
benchmark was compiled with the PathScale 2.4 C compiler using 4 OpenMP
threads. These results are close to the median of eight trials, but the
scatter across the results was quite small.

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STREAM version $Revision: 5.6 $
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This system uses 8 bytes per DOUBLE PRECISION word.
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Array size = 2000000, Offset = 384
Total memory required = 45.8 MB.
Each test is run 10 times, but only
the *best* time for each is used.
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Number of Threads requested = 4
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Printing one line per active thread....
Printing one line per active thread....
Printing one line per active thread....
Printing one line per active thread....
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Your clock granularity/precision appears to be 2 microseconds.
Each test below will take on the order of 2667 microseconds.
   (1333 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) Avg time Min time Max time
Copy: 13029.5824 0.0025 0.0025 0.0025
Scale: 13018.2083 0.0025 0.0025 0.0025
Add: 12830.7050 0.0038 0.0037 0.0039
Triad: 12889.0264 0.0038 0.0037 0.0038
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Solution Validates
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John D. McCalpin, Ph.D.
Acceleration Technologies
AMD Advanced Technology Planning and Performance Labs
T 512-602-3544
F 512-602-7754
Received on Tue Feb 06 06:47:15 2007