<p dir="ltr">If you really have 8 core nodes with only 8G per node, buy some memory. More standard would be 8 cores with 8G each, I.e. 64 G/node.</p>
<p dir="ltr">1G per core is unreasonably small for a serious scientific computer, many things will go wrong. You will not be able to handle 72 atoms.</p>
<p dir="ltr">___________________________<br>
Professor Laurence Marks<br>
Department of Materials Science and Engineering<br>
Northwestern University<br>
<a href="http://www.numis.northwestern.edu">www.numis.northwestern.edu</a><br>
<a href="http://MURI4D.numis.northwestern.edu">MURI4D.numis.northwestern.edu</a><br>
Co-Editor, Acta Cryst A<br>
"Research is to see what everybody else has seen, and to think what nobody else has thought"<br>
Albert Szent-Gyorgi</p>
<div class="gmail_quote">On Feb 9, 2015 3:37 AM, "Yundi Quan" <<a href="mailto:quanyundi@gmail.com">quanyundi@gmail.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div dir="ltr">Hi,
<div>Is there a way of reducing the memory usage? I have a case with 72 atom per unit cell. And my cluster has 8 GB member per node and each node has 8 cores. I submitted the job and got the error message saying that insufficient virtual memory. Can someone
give me any suggestions?</div>
<div><br>
</div>
<div><br>
</div>
<div>Yundi</div>
</div>
</div>
</blockquote></div>