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    <p>Not sure if helps or not, but your steps look different than what
      F. Tran wrote at:<br>
    </p>
    <p><a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg18937.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg18937.html</a></p>
    <div class="moz-cite-prefix">On 2/27/2021 6:17 AM, pboulet wrote:<br>
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    <blockquote type="cite"
      cite="mid:E5CE5F3E-CDA7-4D92-91E5-39FE87B71B35@univ-amu.fr">
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      Dear all,
      <div class=""><br class="">
      </div>
      <div class="">I am trying to perform an optic calculation with
        hybrid (HSE) functional. The problem I face is that I
        systematically end up with Im(eps)= 0. and Re(eps)=1.0
        irrespective of the energy.<br class="">
        <div class=""><br class="webkit-block-placeholder">
        </div>
        <div class="">The plasma frequencies w_p_xx and w_p_zz are both
          Nan. </div>
        <div class=""><br class="">
        </div>
        <div class="">I proceed this way:</div>
        <div class="">1) Run a SCF calculations with 12x12x12 k-points
          grid (1728 fbz k-points, 163 ibz k-points): </div>
        <div class="">run_lapw -p -hf -newklist -mode1 -i 1 -NI</div>
        <div class="">The run is exceeding the queue limit of 24h so I
          proceed step by step (1step=13h on 288 cores)</div>
        <div class="">2) Run the optic calculations sequence:</div>
        <div class="">
          <div class="">x lapw1 -p</div>
          <div class="">x lapw2 -fermi -hf -p</div>
          <div class="">x optic -hf -p</div>
          <div class="">x joint -hf</div>
          <div class="">x kram</div>
        </div>
        <div class=""><br class="webkit-block-placeholder">
        </div>
        <div class="">Is there anything wrong in the procedure?</div>
        <div class=""><br class="">
        </div>
        <div class="">I can provide input/output files if necessary.</div>
        <div class=""><br class="">
        </div>
        <div class="">Thank you for your help,</div>
        <div class="">Pascal</div>
        <div class=""><br class="">
        </div>
        <div class=""><br class="">
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                          <div class="" style="caret-color: rgb(0, 0,
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                              class="" style="font-size: 16pt;
                              font-family: Mistral;">Pascal Boulet</span></div>
                          <div class="" style="caret-color: rgb(0, 0,
                            0); color: rgb(0, 0, 0); letter-spacing:
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                            none; -webkit-text-stroke-width: 0px;"><font
                              class="" face="Lucida Handwriting"><span
                                class="" style="font-size: 21px;">—</span></font></div>
                          <div class="" style="caret-color: rgb(0, 0,
                            0); color: rgb(0, 0, 0); letter-spacing:
                            normal; text-transform: none; white-space:
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                            none; -webkit-text-stroke-width: 0px;"><em
                              class="" style="color: rgb(34, 187, 234);
                              font-family: verdana; font-size: 11px;
                              line-height: 22px;">Professor in
                              computational materials chemistry -
                              DEPARTMENT OF CHEMISTRY</em></div>
                          <div class="">
                            <div class="" style="caret-color: rgb(0, 0,
                              0); color: rgb(0, 0, 0); letter-spacing:
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                              font-family: Tahoma, Verdana, Arial,
                              Helvetica, sans-serif; font-size: 15px;
                              line-height: 22px;"><span class=""
                                style="font-size: 11px; font-family:
                                verdana;">University of Aix-Marseille </span><span
                                class="" style="font-size: 11px;
                                font-family: verdana;">- Avenue
                                Escadrille Normandie Niemen - F-13013
                                Marseille - FRANCE</span></div>
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                              line-height: 22px;"><span class=""
                                style="font-size: 11px; font-family:
                                verdana;">Tél: +33(0)4 13 55 18 10 - Fax
                                : +33(0)4 13 55 18 50</span></div>
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                                class="" face="verdana"><span class=""
                                  style="font-size: 12px; line-height:
                                  22px;">Email : </span></font><font
                                class="" face="verdana" color="#22bbea"><span
                                  style="font-size: 12px; line-height:
                                  20px;" class=""><a
                                    href="mailto:pascal.boulet@univ-amu.fr"
                                    class="" moz-do-not-send="true">pascal.boulet@univ-amu.fr</a></span></font></div>
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    </blockquote>
    <blockquote type="cite"
      cite="mid:E5CE5F3E-CDA7-4D92-91E5-39FE87B71B35@univ-amu.fr">
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