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    <p>My notes on that error are below.  Feel free to correct or
      improve above them.</p>
    <p>Kind Regards,<br>
      <br>
      Gavin</p>
    <p>WIEN2k user<br>
    </p>
    <p>QTL-B Error Notes<br>
    </p>
    <p>---------------------------------------------------------------------------------------------------------<br>
    </p>
    <p>Not always but a lot (99% ??) of the time QTL-B errors are due to
      a bad struct file.  One possibility is wrong space group structure
      setting.  WIEN2k tends to only accept the crystal setting that
      sgroup uses [1].  Another possibility could be the repeating
      decimal (e.g., 1/3) issue [2]. Potentially another cause could be
      a RMT issue [3].<br>
      <br>
      The WIEN2k FAQ has a page that has guidance on resolving the QTL-B
      error at [4].<br>
      <br>
      The FAQ page at [5] gives some advice if the QTL-B is happening
      after a few iterations.<br>
      <br>
      You might also find the QTL-B error being related to ghostbands
      errors.  If that is the case, troubleshooting of ghostbands are
      described in section "12.1 Ghost bands" on page 254 of the WIEN2k
      21.1 usersguide [6].<br>
      <br>
      The meaning of QTL is given the mailing list post at [7].<br>
      <br>
      Also, search the mailing list for other solutions that resolved
      QTL-B related errors.  For example, a proper case.inst seemed to
      resolve one recently in the mailing list [8].</p>
    <p>[1]
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg08148.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg08148.html</a><br>
      [2]
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg18997.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg18997.html</a><br>
      [3]
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16806.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16806.html</a><br>
      [4] <a class="moz-txt-link-freetext" href="http://susi.theochem.tuwien.ac.at/reg_user/faq/qtlb.html">http://susi.theochem.tuwien.ac.at/reg_user/faq/qtlb.html</a><br>
      [5] <a class="moz-txt-link-freetext" href="http://susi.theochem.tuwien.ac.at/reg_user/faq/scf.html">http://susi.theochem.tuwien.ac.at/reg_user/faq/scf.html</a><br>
      [6] <a class="moz-txt-link-freetext" href="http://www.wien2k.at/reg_user/textbooks/usersguide.pdf">http://www.wien2k.at/reg_user/textbooks/usersguide.pdf</a><br>
      [7]
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg13577.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg13577.html</a><br>
      [8]
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg21748.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg21748.html</a><br>
    </p>
    <div class="moz-cite-prefix">On 6/28/2022 11:46 PM, Peeyush Kumar
      Kamlesh wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CA+o1xQcey5WioKEUp5HSs2mCSTEgQ+yzrUrDGpEOLZqZccGgJA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">Dear Users,
        <div>Greetings!<br>
          <div>I am using WIEN2k_19.1. I am running perovskite material
            of space group 225(Fm-3m) with 10000 k-point and cutoff
            energy -7.0 Ry. I used RMT reduction 5% but I am getting the
            following error during running scf calculations.<br>
            <div>__________________________________</div>
            <div>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">hup: Command not found.</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW0 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 - FERMI; weights
                  written</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">SUMPARA END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">CORE 
                  END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">MIXER END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">ec cc and fc_conv 0 0 1</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">in cycle 2    ETEST: 0  
                  CTEST: 0</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">hup: Command not found.</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW0 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 - FERMI; weights
                  written</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">SUMPARA END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">CORE 
                  END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">MIXER END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">ec cc and fc_conv 0 0 1</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">in cycle 3    ETEST: 0  
                  CTEST: 0</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">hup: Command not found.</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW0 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW1 END</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">LAPW2 - FERMI; weights
                  written</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">L2main - QTL-B Error</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">L2main - QTL-B Error</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">L2main - QTL-B Error</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">L2main - QTL-B Error</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">cp: cannot stat
                  '.in.tmp': No such
                  file or directory</span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                0.0001pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN"> </span></p>
              <p class="gmail-PreformattedText" style="margin:0in 0in
                14.15pt;font-size:10pt;font-family:"Liberation
                Mono""><span lang="EN-IN">>   stop error</span></p>
              <p class="MsoNormal" style="margin:0in 0in
                0.0001pt;font-size:12pt;font-family:"Liberation
                Serif","serif""><span lang="EN-IN"> ______________</span></p>
              <p class="MsoNormal" style="margin:0in 0in
                0.0001pt;font-size:12pt;font-family:"Liberation
                Serif","serif""><span lang="EN-IN">Kindly
                  help!</span></p>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
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