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    <p>Also, what compiler and version are you using?  Errors like that
      seem common among the 2016/2017/2018 Intel Fortran compilers [
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17542.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17542.html</a>
      ].  You could possibly try gfortran or the pre-built executables
      just to see if it caused by your compiler [
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17982.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17982.html</a>
      ].</p>
    <p>For example, I'm using the 2013 Intel Fortran compiler:<br>
    </p>
    <p><font color="#c0c0c0">username@computername:~/Desktop$</font>
      ifort -v<br>
      <font color="#006600">ifort version 14.0.1</font></p>
    <p>I don't know for sure, but it looks like your error message does
      not come from WIEN2k 18.2 but an older version.  If so, the latest
      version might resolve the error.<br>
    </p>
    <p>I'm using WIEN2k 18.2:<br>
    </p>
    <p><font color="#c0c0c0">username@computername:~/Desktop$</font> cat
      $WIENROOT/WIEN2k_VERSION<br>
      <font color="#006600">WIEN2k_18.2 (Release 17/7/2018)</font></p>
    <p>My version also has the ScaleDiag.F fixes to the mixer (i.e.,
      ScaleDiag.patch [
      <a class="moz-txt-link-freetext" href="https://github.com/gsabo/WIEN2k-Patches/tree/master/18.2">https://github.com/gsabo/WIEN2k-Patches/tree/master/18.2</a> ]).</p>
    <p>I tried a quick test calculation with the structure parameters
      you gave for a couple scf cycles, and it seems to run fine:<br>
    </p>
    <p><font color="#c0c0c0">username@computername:~/wiendata$</font>
      mkdir NaMnO2<br>
      <font color="#c0c0c0">username@computername:~/wiendata$</font> cd
      NaMnO2<br>
      <font color="#c0c0c0">username@computername:~/wiendata/NaMnO2$</font>
      makestruct_lapw<br>
      <font color="#c0c0c0">...</font><br>
      TITLE :NaMnO2<br>
      <font color="#c0c0c0">...</font><br>
      <font color="#c0c0c0">Would you like to enter  Spacegroup or
        Lattice (S/L)(def=S)?</font> S<br>
      <font color="#c0c0c0">SPACE GROUP: (type ENTER or give first
        LETTER for a list) <br>
        give SPACE GROUP as SYMBOL or NUMBER: </font>B2/m<br>
      <font color="#c0c0c0"> Info:  space group is : 12 Cxz B2/m -B2x<br>
        <br>
        Units of lattice parameters (Bohr/Angstrom) (b/A) (def=ANG):</font>b<br>
      <font color="#c0c0c0">Lattice PARAMETERS as a b c (1 or 3 numbers
        - if you specify only 1 number, a cubic system is assumed):</font><br>
      10.720416 11.929841 5.397058<br>
      <font color="#c0c0c0">ANGLES BETWEEN lattice vectors, as alpha
        beta gamma (def=90.0 90.0 90.0):</font>90 90 122.34<br>
      <font color="#c0c0c0">NUMBER INEQUEVALENT ATOMS :</font>3<br>
      <font color="#c0c0c0">ATOM  1 (ELEMENT): </font>Na<br>
      <font color="#c0c0c0">POSITION OF ATOM Na as X,Y,Z (def=0 0 0) :</font>0.5
      0.5 0.5<br>
      <font color="#c0c0c0">ATOM  2 (ELEMENT): </font>Mn<br>
      <font color="#c0c0c0">POSITION OF ATOM Mn as X,Y,Z (def=0 0 0) :</font>0
      0 0<br>
      <font color="#c0c0c0">ATOM  3 (ELEMENT):</font> O<br>
      <font color="#c0c0c0">POSITION OF ATOM O as X,Y,Z (def=0 0 0) :</font>0.5017
      0.2294 0<br>
      <font color="#c0c0c0">...<br>
        SPECIFY possible REDUCTION of SPHERE RADII in % (def=0)</font><br>
      2<br>
      <font color="#c0c0c0">...<br>
        rerun setrmt ?(y,N) (def=N): </font><br>
      N    <br>
      <font color="#c0c0c0">...<br>
        The file   init.struct   has been created<br>
         <br>
          for modifications of your input you can also edit file
        datastruct and run<br>
          Tmaker / setrmt init -r X    individually</font><br>
      <br>
      <font color="#c0c0c0">username@computername:~/wiendata/NaMnO2$</font>
      cp init.struct NaMnO2.struct<br>
      <font color="#c0c0c0">username@computername:~/wiendata/NaMnO2$</font>
      init_lapw -b<br>
      <font color="#c0c0c0">...<br>
          init_lapw finished ok  <br>
        username@computername:~/wiendata/NaMnO2$</font> run_lapw -ec
      0.001<br>
      <font color="#c0c0c0">hup: Command not found.<br>
         LAPW0 END<br>
         LAPW1 END<br>
         LAPW2 END<br>
         CORE  END<br>
         MIXER END<br>
        ec cc and fc_conv 0 1 1<br>
        in cycle 2    ETEST: 0   CTEST: 0<br>
        hup: Command not found.<br>
         LAPW0 END<br>
         LAPW1 END<br>
         LAPW2 END<br>
         CORE  END<br>
         MIXER END<br>
        ec cc and fc_conv 0 1 1<br>
        in cycle 3    ETEST: 0   CTEST: 0<br>
        hup: Command not found.<br>
         LAPW0 END<br>
         LAPW1 END<br>
         LAPW2 END<br>
         CORE  END<br>
         MIXER END<br>
        ec cc and fc_conv 0 1 1<br>
        ...</font><br>
    </p>
    <div class="moz-cite-prefix">On 10/4/2018 3:38 PM, Laurence Marks
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CANkSMZCzEm7H1F0zGpsevefWpy_gdaQ6xrqP+9m2H++jciFV=Q@mail.gmail.com">
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          style="font-family:verdana,sans-serif;color:#000000">1) What
          version of Wien2k are you using?</div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif;color:#000000">2) What
          does "cat *.error" show?</div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif;color:#000000"><br>
        </div>
        <div class="gmail_default"
          style="font-family:verdana,sans-serif;color:#000000">This
          almost certainly has nothing to do with -ec, k-points.
          Changing ulimit is obsolete (unless you are using an obsolete
          version of Wien2k). This might be an error in mixer, but is
          more likely to be a setup error. However, without more
          information it is not possible to say (yet).</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr">On Thu, Oct 4, 2018 at 4:32 PM Eric Kenney <<a
            href="mailto:kenneyef@bc.edu" moz-do-not-send="true">kenneyef@bc.edu</a>>
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0 0 0
          .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <div>
            <div dir="ltr">
              <div dir="ltr">
                <div dir="ltr">
                  <div dir="ltr">
                    <div dir="ltr">
                      <div dir="ltr">
                        <div dir="ltr">
                          <div dir="ltr">
                            <div>I'm having an issue with segmentation
                              faults during LAPW cycles.  I keep getting
                              segmentation faults after running a
                              standard run_lapw command:</div>
                            <div><span
                                style="font-family:monospace,monospace"><br>
                              </span></div>
                            <div><span
                                style="font-family:monospace,monospace">run_lapw
                                -ec 0.001<br>
                                 LAPW0 END<br>
                                 LAPW1 END<br>
                                 LAPW2 END<br>
                                 CORE  END<br>
                                forrtl: severe (174): SIGSEGV,
                                segmentation fault occurred<br>
                                Image              PC               
                                Routine            Line       
                                Source            
                                <br>
                                mixer              00000000004827DD 
                                Unknown               Unknown  Unknown<br>
                                libpthread-2.12.s  00000032F8C0F7E0 
                                Unknown               Unknown  Unknown<br>
                                mixer              0000000000415054 
                                MAIN__                    999  mixer.F<br>
                                mixer              000000000040475E 
                                Unknown               Unknown  Unknown<br>
                                <a
href="https://urldefense.proofpoint.com/v2/url?u=http-3A__libc-2D2.12.so&d=DwMFaQ&c=yHlS04HhBraes5BQ9ueu5zKhE7rtNXt_d012z2PA6ws&r=U_T4PL6jwANfAy4rnxTj8IUxm818jnvqKFdqWLwmqg0&m=_GDrA5gqSzwOUAk1SVsST692GzqxkO1n72mdGQGj3Yg&s=5C-9xGUj4eezgpBLcDSWyPjOahdmBgTkuZNTguIq8YQ&e="
                                  target="_blank" moz-do-not-send="true">libc-2.12.so</a>      
                                00000032F841ED1D  __libc_start_main    
                                Unknown  Unknown<br>
                                mixer              0000000000404669 
                                Unknown               Unknown  Unknown</span><br>
                              <br>
                              >   stop error</div>
                            <div><br>
                            </div>
                            <div><br>
                            </div>
                            <div>Naturally, I've been going through the
                              mailing list and trying to deduce what the
                              issue here is.  The error occurs for a
                              large range of RKmax values (5-8) and a
                              large range of K mesh values
                              (1000-10000).  It occurs for -ec 0.001 to
                              -ec 0.0000001, giving a large range on
                              convergences.  I've tried ulimit, but my
                              cluster does not appear to have that
                              command installed, nor do I think it is
                              the issue.<br>
                            </div>
                            <div><br>
                            </div>
                            <div>Interestingly, I haven't had this issue
                              in the past with other lattices.  This
                              lattice is NaMnO2 in the B2/m setting;
                              imported straight from a .cif file from
                              Springer Materials.  I've done x nn, x
                              sgroup and, x symmetry all manually, and
                              there seems to be no obvious issues here. 
                              For reference, the lattice parameters are
                              as follows:</div>
                            <div><br>
                            </div>
                            <div><span
                                style="font-family:monospace,monospace">a=10.720416
                                b=11.929841  c=5.397058 90.000000
                                90.000000  122.340000</span></div>
                            <div><span
                                style="font-family:monospace,monospace">NA
                                X=0.50000000 Y=0.50000000 Z=0.50000000<br>
                                Mn X=0.00000000 Y=0.00000000
                                Z=0.00000000</span></div>
                            <div><span
                                style="font-family:monospace,monospace">O
                                X=0.50170000 Y=0.22940000 Z=0.00000000</span></div>
                            <div><span
                                style="font-family:monospace,monospace">4
                                atoms per unit cell.<br>
                              </span></div>
                            <div><span
                                style="font-family:monospace,monospace"><br>
                              </span></div>
                            <div><span
                                style="font-family:monospace,monospace"><font
                                  face="arial,helvetica,sans-serif">Thank
                                  you, and have a nice day!</font></span><br>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </blockquote>
      </div>
      <br clear="all">
      <div><br>
      </div>
      -- <br>
      <div dir="ltr" class="gmail_signature"
        data-smartmail="gmail_signature">
        <div dir="ltr">
          <div>
            <div dir="ltr">
              <div>
                <div dir="ltr">
                  <div dir="ltr">
                    <div dir="ltr">
                      <div dir="ltr">
                        <div dir="ltr"><span style="font-size:12.8px">Professor
                            Laurence Marks</span><br>
                        </div>
                        <div dir="ltr"><span style="font-size:12.8px">"Research
                            is to see what everybody else has seen, and
                            to think what nobody else has thought", </span><span
                            style="font-size:12.8px">Albert Szent-Gyorgi</span><br>
                          <a href="http://www.numis.northwestern.edu"
                            target="_blank" moz-do-not-send="true">www.numis.northwestern.edu</a> ; <span
                            style="font-size:12.8px">Corrosion in 4D: </span><a
                            href="http://MURI4D.numis.northwestern.edu"
                            style="font-size:12.8px" target="_blank"
                            moz-do-not-send="true">MURI4D.numis.northwestern.edu</a>
                          <div><span style="font-size:12.8px">Partner of
                              the CFW 100% program for gender equity, </span><a
                              href="http://www.cfw.org/100-percent"
                              style="font-size:12.8px" target="_blank"
                              moz-do-not-send="true">www.cfw.org/100-percent</a></div>
                          <div>Co-Editor, Acta Cryst A</div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <blockquote type="cite"
cite="mid:CANkSMZCzEm7H1F0zGpsevefWpy_gdaQ6xrqP+9m2H++jciFV=Q@mail.gmail.com"></blockquote>
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