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    <p>If "<font color="#008000">morning</font>" in your sentence below
      means that you shutdown your system at the end of the day and
      start it up in the morning, a possibility might be that your
      memory is being exhausted and was freed making it available again
      by the system reboot.</p>
    <p>You could be read about memory exhaustion, insufficient RAM
      memory, and other segmentation fault causes at the following three
      links:</p>
    Possible Cause #2-prime: Stack Exhaustion Due to Heap or General
    Memory Exhaustion: <a class="moz-txt-link-freetext"
href="https://software.intel.com/content/www/us/en/develop/articles/determining-root-cause-of-sigsegv-or-sigbus-errors.html">https://software.intel.com/content/www/us/en/develop/articles/determining-root-cause-of-sigsegv-or-sigbus-errors.html</a><br>
    <br>
    Check shell limits:<a class="moz-txt-link-freetext"
      href="https://kb.iu.edu/d/aqsj"> https://kb.iu.edu/d/aqsj</a><br>
    <br>
    Insufficient RAM memory: <a class="moz-txt-link-freetext"
href="http://www.democritos.it/pipermail/pw_forum/2005-March/002272.html">http://www.democritos.it/pipermail/pw_forum/2005-March/002272.html</a><br>
    <div class="moz-cite-prefix"><br>
    </div>
    <div class="moz-cite-prefix">On 5/14/2020 5:17 AM, shamik wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAA+63+pTuwRuV3uGBNyK=3-Vj5YrVUdTpm9wT2nNuF9vTE3SfQ@mail.gmail.com">
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      <div dir="ltr">Dear Gavin,
        <div><br>
        </div>
        <div>               The problem is solved, but, how I don't
          know. I have just re do the initilization in this <font
            color="#008000">morning</font>, & it works.  I have
          encountered the similar problems before. Sometimes it is not
          working while sometimes it works...I have no clue why &
          how such thing happens..........</div>
        <div><br>
        </div>
        <div>with regards,</div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Thu, 14 May 2020 at 06:48,
          Gavin wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
          <div>
            <p>Currently, I'm using the source code package
              WIEN2k_19.2.tar from the Code download [1] area of the
              WIEN2k website but with the WIEN2k_VERSION.patch at [2]
              that adjusts the WIEN2k_VERSION file from having version
              19.1 to match the version 19.2 information given on the
              WIEN2k website.  The <span>Segmentation</span> <span>fault
                error seems to be particular to your system (Linux
                operating system, Fortran compiler, etc.) as I was NOT
                able to reproduce the error as seen below:<br>
              </span></p>
            <p>username@computername:~/wiendata/NiSbO4_V_14$ lsb_release
              -a<br>
              No LSB modules are available.<br>
              Distributor ID:    Ubuntu<br>
              Description:    Ubuntu 20.04 LTS<br>
              Release:    20.04<br>
              Codename:    focal<br>
              username@computername:~/wiendata/NiSbO4_V_14$ gfortran -v<br>
              ...<br>
              gcc version 9.3.0 (Ubuntu 9.3.0-10ubuntu2) <br>
              username@computername:~/wiendata/NiSbO4_V_14$ cat
              $WIENROOT/WIEN2k_VERSION<br>
              WIEN2k_19.2 (Release 21/4/2020)<br>
              username@computername:~/wiendata/NiSbO4_V_14$ ls<br>
              NiSbO4_V_14.struct<br>
              username@computername:~/wiendata/NiSbO4_V_14$ init_lapw -b<br>
              ...<br>
                init_lapw finished ok  <br>
              username@computername:~/wiendata/NiSbO4_V_14$ x kgen<br>
                NUMBER OF K-POINTS IN WHOLE CELL: (0 allows to specify 3
              divisions of G)<br>
              300<br>
               length of reciprocal lattice vectors:   0.656   0.674  
              0.763   6.307   6.479   7.342<br>
                Shift of k-mesh allowed. Do you want to shift: (0=no,
              1=shift)<br>
              1<br>
                        45  k-points generated, ndiv=          
              6           6           6<br>
              STOP KGEN ENDS<br>
              0.0u 0.0s 0:04.27 0.4% 0+0k 0+136io 0pf+0w</p>
            [1] <a href="http://www.wien2k.at/reg_user/index.html"
              target="_blank" moz-do-not-send="true">http://www.wien2k.at/reg_user/index.html</a><br>
            [2] <a
              href="https://github.com/gsabo/WIEN2k-Patches/tree/master/19.2"
              target="_blank" moz-do-not-send="true">https://github.com/gsabo/WIEN2k-Patches/tree/master/19.2</a><br>
            <div><br>
            </div>
            <div>On 5/13/2020 9:28 AM, shamik chakrabarti wrote:<br>
            </div>
            <blockquote type="cite">
              <div dir="ltr">Dear Wien2k users,
                <div>                               I have started
                  simulation of NiSbO4 (structure attached). During
                  initialization I got the following error (during x
                  kgen):</div>
                <div><br>
                </div>
                <div><span>Segmentation</span> <span>fault</span><br>
                  0.0u 0.0s 0:00.00 0.0% 0+0k 0+0io 0pf+0w<br>
                  error: command   /usr/local/Wien2k/kgen kgen.def  
                  failed</div>
                <div><br>
                </div>
                <div>I have given total k-point 300 which should give 14
                  k-points in irbz. I have also prepare a fresh
                  directory & did all the initialization properly,
                  but getting the same results always. </div>
                <div><br>
                </div>
                <div>Looking forward to your reply eagerly.</div>
                <div><br>
                </div>
                <div>with regards,  <br clear="all">
                  <div><br>
                  </div>
                  -- <br>
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                          <div dir="ltr">
                            <div dir="ltr">
                              <div dir="ltr">
                                <div style="font-size:small">Dr. Shamik
                                  Chakrabarti</div>
                                <div style="font-size:small">Research
                                  Fellow </div>
                                <div style="font-size:small">Department
                                  of Physics</div>
                                <div style="font-size:small">Indian
                                  Institute of Technology Patna</div>
                                <div style="font-size:small">Bihta-801103</div>
                                <div style="font-size:small">Patna</div>
                                <div style="font-size:small">Bihar,
                                  India</div>
                              </div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </blockquote>
          </div>
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        </blockquote>
      </div>
      <br clear="all">
      <div><br>
      </div>
      -- <br>
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        <div dir="ltr">
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            <div dir="ltr">
              <div dir="ltr">
                <div dir="ltr">
                  <div dir="ltr">
                    <div style="font-size:small">Dr. Shamik Chakrabarti</div>
                    <div style="font-size:small">Research Fellow </div>
                    <div style="font-size:small">Department of Physics</div>
                    <div style="font-size:small">Indian Institute of
                      Technology Patna</div>
                    <div style="font-size:small">Bihta-801103</div>
                    <div style="font-size:small">Patna</div>
                    <div style="font-size:small">Bihar, India</div>
                  </div>
                </div>
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            </div>
          </div>
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