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<DIV><FONT face=Arial size=2>Dear WIEN2k users,</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I just succeeded in installing WIEN2k on my two
computers.</FONT></DIV>
<DIV><FONT face=Arial size=2>I use ifc8 (i.e. ifort) and Goto's
BLAS.</FONT></DIV>
<DIV><FONT face=Arial size=2>The configurations of the two computers
are:</FONT></DIV>
<DIV><FONT face=Arial size=2>1. P4 3.2G 800 FSB + DDR 400 dual-ch
RAM</FONT></DIV>
<DIV><FONT face=Arial size=2>2. Xeon 2.4G + PC800 RDRAM, respectively.
</FONT></DIV>
<DIV><FONT face=Arial size=2>I used the default optimization leverl, i.e.
-O2.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I run the benchmark on the two systems.
</FONT></DIV>
<DIV><FONT face=Arial size=2>The results are 258 sec and 350 sec,
respectively.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I found, on the page <A
href="http://www.wien2k.at/reg_user/benchmark/">http://www.wien2k.at/reg_user/benchmark/</A>,
that</FONT></DIV>
<DIV><FONT face=Arial size=2>there are systems similar to mine, but all have
better performance </FONT></DIV>
<DIV><FONT face=Arial size=2>(at least 10%). I wonder what options can be used
for </FONT><FONT face=Arial size=2>acquiring </FONT></DIV>
<DIV><FONT face=Arial size=2>the performance gain. I tried -O3, but the
compilation failed.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Also, I noticed that the best performance on P4
systems was achieved </FONT></DIV>
<DIV><FONT face=Arial size=2>by using MKL. This is strange because normally
Goto's lib is faster </FONT></DIV>
<DIV><FONT face=Arial size=2>than MKL. Anyway, I also tried MKL. Though the
compilation passed,</FONT></DIV>
<DIV><FONT face=Arial size=2>I got an error of "undefined symbol
__intel_fast_memset". </FONT></DIV>
<DIV><FONT face=Arial size=2>Any comment on this would be appreciated.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sincerely,</FONT></DIV>
<DIV><FONT face=Arial size=2>Yiyang</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
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