<div dir="ltr"><div><div>Thank you for your answers and for your patience, I realize my errors were rather elementary.<br><br></div>Best,<br></div>John Shin<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Mar 12, 2015 at 2:12 AM, Giovanni Cantele <span dir="ltr"><<a href="mailto:giovanni.cantele@spin.cnr.it" target="_blank">giovanni.cantele@spin.cnr.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">To complete my previous message, I’ve just realised that there is for sure another problem with your input,<br>
not necessarily related to the error you find but that for sure would give you problems at running time:<br>
the atomic positions you give are in crystal coordinates so lot of atoms are overlapping. For example,<br>
just look at the first pair:<br>
Co 0.000000000 0.000000000 0.000000000<br>
Co 0.000000000 0.000000000 1.000000000<br>
<br>
Your unit cell contains a Co atom at the origin and its periodic replica along the third lattice vector,<br>
but the latter must NOT given in input because periodic boundary conditions already take it into account.<br>
In this respect, or if you want to build a primitive unit cell, so all the atoms equivalent to a given one MUST be<br>
deleted, or in crystal coordinates dei cannot differ by integers in any directions.<br>
<br>
So the atoms<br>
Co 0.000000000 0.000000000 1.000000000<br>
Co 0.000000000 1.000000000 0.000000000<br>
Co 0.000000000 1.000000000 1.000000000<br>
Co 1.000000000 0.000000000 0.000000000<br>
Co 1.000000000 0.000000000 1.000000000<br>
Co 1.000000000 1.000000000 0.000000000<br>
Co 1.000000000 1.000000000 1.000000000<br>
ARE ALL EQUIVALENT to the first one because their positions differ by a reciprocal lattice vector independently on the<br>
crystal lattice (the positions are in crystal coordinates)!!!!<br>
<span class="im HOEnZb"><br>
Giovanni<br>
<br>
> On 12 Mar 2015, at 03:04, John Shin <<a href="mailto:joyshin@ucsc.edu">joyshin@ucsc.edu</a>> wrote:<br>
><br>
</span><div class="HOEnZb"><div class="h5">> Hello,<br>
><br>
> I am an undergraduate learning how to use Quantum Espresso. I get the following error when running my input (which I've attached):<br>
><br>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
> task # 0<br>
> from set_sym_bl : error # 1<br>
> some problem with symmetries<br>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%<br>
><br>
> Any help would be greatly appreciated.<br>
><br>
> Best,<br>
> John Shin<br>
><br>
</div></div><div class="HOEnZb"><div class="h5">> <Co4(OH)<a href="http://6Cl2_2.pw.in" target="_blank">6Cl2_2.pw.in</a>>_______________________________________________<br>
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<br>
--<br>
<br>
Giovanni Cantele, PhD<br>
CNR-SPIN<br>
c/o Dipartimento di Fisica<br>
Universita' di Napoli "Federico II"<br>
Complesso Universitario M. S. Angelo - Ed. 6<br>
Via Cintia, I-80126, Napoli, Italy<br>
e-mail: <a href="mailto:giovanni.cantele@spin.cnr.it">giovanni.cantele@spin.cnr.it</a><br>
Phone: <a href="tel:%2B39%20081%20676910" value="+39081676910">+39 081 676910</a><br>
Skype contact: giocan74<br>
<br>
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Web page: <a href="http://people.na.infn.it/~cantele" target="_blank">http://people.na.infn.it/~cantele</a><br>
<br>
<br>
<br>
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