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Dear Peter and Wien user,<br>
I have been able to have an access to a Xeon (5140) computer 2
chips/2cores per chip<br>
Detail is below:<br>
<p class="MsoNormal" style="margin-left: 35.4pt; text-indent: 35.4pt;"><font
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">- bi-Xeon 5140
(dualcore à 2.33Ghz, 64 bits, 4Mo de cache partagé) <o:p></o:p></span></font></p>
<p class="MsoNormal" style="margin-left: 35.4pt; text-indent: 35.4pt;"><font
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">- 4 Go de mémoire FBDIMM
PC5300 667 Mhz</span></font></p>
<p class="MsoNormal" style="margin-left: 35.4pt; text-indent: 35.4pt;"><font
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">- FSB 1333MHz <o:p></o:p></span></font></p>
<font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"></span></font>Lapw1c has
been compiled with intel fortran:<br>
<tt>FOPT = -FR -mp1 -w -prec_div -pc80 -pad -ip<br>
</tt>BLAS/LAPACK (goto_core2-1.08)<br>
<tt>$(FOPT) -L../SRC_lib -llapack_lapw -L/home/florent.boucher/GotoBLAS
-lgoto<br>
</tt><br>
Here are the results on the official WIEN benchmark:<br>
<tt>1 k-point (OMP_NUM_THREADS=1, only 1 core used):
134s<br>
2 k-points in parallel at the same time (2 of the 4 cores are used):
145s (efficiency = 92%) <br>
</tt><tt>4 k-points in parallel at the same time (4 of the 4 cores are
used): 184s (efficiency = 73%)<br>
<br>
</tt>One see effectively that Xeon 2.33 are about 1.6 faster than
Opteron 2.2 but the ratio decrease to 1.3 if one compares the
performance on a fully loaded system.<br>
<br>
I hope it helps.<br>
Regards<br>
Florent<br>
<br>
PS: for those that will be interested in VASP serial (same compiler,
same BLAS library), the ratio found is 1.17 in favor of the Xeon<br>
<tt><br>
</tt><br>
<pre class="moz-signature" cols="80">--
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| Florent BOUCHER | |
| Institut des Matériaux Jean Rouxel | <a class="moz-txt-link-freetext" href="Mailto:Florent.Boucher@cnrs-imn.fr">Mailto:Florent.Boucher@cnrs-imn.fr</a> |
| 2, rue de la Houssinière | Phone: (33) 2 40 37 39 24 |
| BP 32229 | Fax: (33) 2 40 37 39 95 |
| 44322 NANTES CEDEX 3 (FRANCE) | <a class="moz-txt-link-freetext" href="http://www.cnrs-imn.fr">http://www.cnrs-imn.fr</a> |
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