Dear Javier,<br><br> Did you receive may reply with attached example I have a problem with?<br><br> thanks,<br> jess<br><br><div class="gmail_quote">On Sun, Mar 9, 2008 at 2:36 AM, <<a href="mailto:j.antonio.montoya@gmail.com">j.antonio.montoya@gmail.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
Dear Jess, that one is in fact one of the specific parts of the code that we need to test deeply. Please post your input so tha we can try to see under which conditions this is hapenening and fix it.<br>
<br>
Meanwhile try to use the flag "nosym" just to see if you manage to get reasonable results.<br>
<br>
Thanks,<br>
<br>
J. Montoya<br>
<a href="mailto:jmontoya@ciw.edu">jmontoya@ciw.edu</a><br>
<br>
<br>
Sent via BlackBerry by AT&T<br>
<div><div></div><div class="Wj3C7c"><br>
-----Original Message-----<br>
From: "Jess Kondor" <<a href="mailto:kondor.jess@gmail.com">kondor.jess@gmail.com</a>><br>
<br>
Date: Sat, 8 Mar 2008 19:02:40<br>
<a href="mailto:To:pw_forum@pwscf.org">To:pw_forum@pwscf.org</a><br>
Subject: [Pw_forum] bfgs vc-relaxation in 4.0cvs<br>
<br>
<br>
Dear all,<br>
<br>
I have noticed that new pre-release 4.0CVS version has an option to optimize cell parameters using BFGS method. However, when using this option, the computation often fails with message "from checkallsym : not orthogonal operation". I'm probably wrong, but I thought that BFGS should not break the symmetry. Is it correct?<br>
<br>
Regards,<br>
JK<br>
<br>
<br>
--<br>
=====================================<br>
Jess Kondor<br>
<br>
PICYT, Av. Venustiano Carranza 2425-A, San Luis Potosí 78210, México<br>
<br>
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