Hello,<br><br>There is a force matching section in the manual of cp2k http://manual.cp2k.org/trunk/CP2K_INPUT/OPTIMIZE_INPUT/FORCE_MATCHING.html but it is not very clear to me how can I define which parameters I would like to do fit or does it try to fit all the parameters? It also says that <em>the filename of the reference forces, should also contain the energy</em> but in which order?, units? Is there an example available for the force matching procedure with cp2k?<br><br>Yours,<br><br><pre class="moz-signature" cols="72">Nguyen Huu Chuong
Institut für Festkörpertheorie
Westfälische Wilhelms-Universität
Wilhelm-Klemm-Straße 10, 48149 Münster</pre><br>