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<p><font face="serif">Look at the following plot from hammer --
using a 4000x4000 matrix and up to 48 threads.</font></p>
<p><img moz-do-not-send="false"
src="cid:part1.A7SZYuV7.quazZpcj@mercer.edu" alt="plot"
width="640" height="480"></p>
<p><br>
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<p>Remember -- Hammer has 24 cores -- but then uses 2 threads per
core to get 48 processors. Based on the result and fit, can you
tell where accessing the memory starts to become an issue?</p>
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<div class="moz-signature">-- <br>
<b><i>Andrew J. Pounds, Ph.D.</i></b><br>
<i>Professor of Chemistry and Computer Science</i><br>
<i>Director of the Computational Science Program</i><br>
<i>Mercer University, Macon, GA 31207 (478) 301-5627</i></div>
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