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<DIV><FONT size=4>Dear all,</FONT></DIV>
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<DIV><FONT size=4>I got a server computer equipped with two 8 core cpus. I
installed intel fortran compiler (12.1) and openmpi (1.6.5). No errors took
place during installation. Then I compiled parallel quantum esspresso (5.2.0)
and the program run correctly. However, I found pw.x runs at very similar
speed with 8 cores or 16 cores. Could any expert show me how to improve the
calculation speed?</FONT></DIV>
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<DIV><FONT size=4>The make.sys file is attached.</FONT></DIV>
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<DIV><FONT size=4>Thanks in advance.</FONT></DIV>
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<DIV><FONT size=4>Shaofeng</FONT></DIV>
<DIV
style="FONT-FAMILY: 'Century'; COLOR: #000000; FONT-SIZE: 14pt">--------------------------------------<BR>Shaofeng
Wang, Ph.D of Geochemistry<BR>Environmental Molecular Science Group<BR>Institute
of Applied Ecology, Chinese Academy of Sciences<BR>Shenyang, 110016,
China<BR>wangshaofeng@iae.ac.cn<BR>www.iae.cas.cn<BR><BR></DIV></DIV></DIV></BODY></HTML>