<div>Dear Lorenzo Paulatto<font color="#790619">:</font></div>
<div><span class="gmail_quote"></span><span class="gmail_quote"></span> </div>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">&gt;On the other hand, vc-relax only tries to minimize stress and minimize<br>&gt;energy. </blockquote>
<div> </div>
<div>I think vc-relax tries to minimize stress, energy and <font color="#ff0000" size="4">force</font> at the same time.</div>
<div>And there is a parameter &quot;<em>forc_conv_thr</em>&quot;.</div>
<div>Am I wrong?</div>
<div> </div><br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">____________________________________<br>Hui Wang<br>School of physics, Nankai University, Tianjin, China </blockquote>