root@pserver4:~# taskset -c 0-5 ./stream
-------------------------------------------------------------
STREAM version $Revision: 5.10 $
-------------------------------------------------------------
This system uses 8 bytes per array element.
-------------------------------------------------------------
Array size = 2500000 (elements), Offset = 0 (elements)
Memory per array = 19.1 MiB (= 0.0 GiB).
Total memory required = 57.2 MiB (= 0.1 GiB).
Each kernel will be executed 10 times.
 The *best* time for each kernel (excluding the first iteration)
 will be used to compute the reported bandwidth.
-------------------------------------------------------------
Number of Threads requested = 5
Number of Threads counted = 5
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 5242 microseconds.
   (= 5242 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    Best Rate MB/s  Avg time     Min time     Max time
Copy:            9058.0     0.006465     0.004416     0.009010
Scale:           8908.9     0.006478     0.004490     0.008945
Add:             9498.0     0.009001     0.006317     0.012920
Triad:           9649.5     0.008498     0.006218     0.012949
-------------------------------------------------------------
Solution Validates: avg error less than 1.000000e-13 on all three arrays
-------------------------------------------------------------