Dear Paolo Giannozzi:<div><br></div><div>> as long as you get convergence, it doesn't matter which diagonalization<br>> algorithm and which mixing parameter you use<br></div><div> I <b>get convergence</b> in <b>pw.x</b>, but <b>fail </b>to get convergence in <b>ph.x</b>.</div>
<div><br></div>> you cannot from input. You have to edit routine "set_defaults_pw.f90"<br><div> Thank you very much for your prompt help :) </div><div><br></div><div><div>-- </div>____________________________________<br>
Hui Wang<br>School of physics, Fudan University, Shanghai, China</div><div><br><br><div class="gmail_quote">On Mon, Apr 15, 2013 at 2:58 PM, Paolo Giannozzi <span dir="ltr"><<a href="mailto:paolo.giannozzi@uniud.it" target="_blank">paolo.giannozzi@uniud.it</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Mon, 2013-04-15 at 13:59 +0800, xirainbow wrote:<br>
<br>
> In my calculations(QE 5.0), the "beta" and "diagonalization" in<br>
> *.ph.out of ph.x is different from the *.scf.out file of pw.x.<br>
<br>
</div>as long as you get convergence, it doesn't matter which diagonalization<br>
algorithm and which mixing parameter you use<br>
<div class="im"><br>
> However, in the *.ph.out file, I find:<br>
> "beta = 0.7000<br>
> Davidson diagonalization with overlap"<br>
<br>
</div>the "beta" parameter is not actually used in phonon calculations, IIRC<br>
<div class="im"><br>
> How to set the "mixing_beta and diagonalization" parameters in ph.x?<br>
<br>
</div>you cannot from input. You have to edit routine "set_defaults_pw.f90"<br>
<span class="HOEnZb"><font color="#888888"><br>
P.<br>
<br>
--<br>
Paolo Giannozzi, Dept. Chemistry&Physics&Environment,<br>
Univ. Udine, via delle Scienze 208, 33100 Udine, Italy<br>
Phone <a href="tel:%2B39-0432-558216" value="+390432558216">+39-0432-558216</a>, fax <a href="tel:%2B39-0432-558222" value="+390432558222">+39-0432-558222</a><br>
<br>
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