<p dir="ltr">Dear Lorenzo<br>
dt only works in cp MD .<br>
Thanks so much for your attention.</p>
<p dir="ltr">Kind regards<br>
Ashkan Shekaari<br>
Tell: +98 933 459 7122; +98 921 346 7384</p>
<div class="gmail_quote">On Jul 27, 2015 1:04 AM, "Lorenzo Paulatto" <<a href="mailto:lorenzo.paulatto@impmc.upmc.fr">lorenzo.paulatto@impmc.upmc.fr</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Sunday, July 26, 2015 09:50:20 PM ashkan shekaari wrote:<br>
> Dear kanak<br>
> Ecutwfc is too small. Find the optimal value. Set ecutrho = 5*ecutwfc.<br>
<br>
Dear Ashkan,<br>
this is not the first time that I see you giving this advice. Do you have any<br>
specific reason for choosing a factor 5?<br>
Kanak only has norm-conserving pseudos, which normally do not require any more<br>
than the default value: ecutrho=4*ecutwfc. Using 5 instead of 4 would require<br>
an interpolation at every scf step, which takes cpu time and memory.<br>
<br>
> Set mixing mode local TF because of inhomogenity.<br>
> Set conv thr of order 10^-9set dt= 20<br>
<br>
dt is not used by BFGS<br>
<br>
kind regards<br>
<br>
--<br>
Dr. Lorenzo Paulatto<br>
IdR @ IMPMC -- CNRS & Université Paris 6<br>
+33 (0)1 44 275 084 / skype: paulatz<br>
<a href="http://www.impmc.upmc.fr/~paulatto/" rel="noreferrer" target="_blank">http://www.impmc.upmc.fr/~paulatto/</a><br>
23-24/4é16 Boîte courrier 115<br>
4 place Jussieu 75252 Paris Cédex 05<br>
<br>
<br>
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