Scott Marlowe wrote:
On Tue, Aug 31, 2010 at 6:41 AM, Yeb Havinga <yebhavinga@xxxxxxxxx> wrote:
export OMP_NUM_THREADS=4
Then I get the following. The rather wierd dip at 5 threads is consistent
over multiple tries:
I get similar dips on my server. Especially as you make the stream
test write a large enough chunk of data to outrun its caches.
See attached png.
Interesting graph, especially since the overall feeling is a linear like
increase in memory bandwidth when more cores are active.
Just curious, what is the 8-core cpu?
-- Yeb
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