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    <div class="moz-cite-prefix">That error usually happens if the w2w
      executable file is compiled on a 64 bit operating system, but then
      it is copied and ran on a 32 bit operating system [
      <a class="moz-txt-link-freetext" href="https://www.dartmouth.edu/~rc/classes/softdev_linux/32-64bit.html">https://www.dartmouth.edu/~rc/classes/softdev_linux/32-64bit.html</a>
      ].  You can probably use the Linux 'file' command [
      <a class="moz-txt-link-freetext" href="http://superuser.com/questions/791506/how-to-determine-if-a-linux-binary-file-is-32-bit-or-64-bit">http://superuser.com/questions/791506/how-to-determine-if-a-linux-binary-file-is-32-bit-or-64-bit</a>
      ] to check if the w2w executable file is 32 bit or 64 bit:<br>
      <br>
      $ cd ~/WIEN2k.14/<br>
      $ file w2w<br>
      <br>
      (where $ is a bash terminal)<br>
      <br>
      On 10/27/2015 12:15 AM, Yue-Wen Fang wrote:<br>
    </div>
    <blockquote
cite="mid:CAMUwqQdS2aGD32Pst7gObRQu+NvDJ+EjQFfAHA7a0huUxUsqng@mail.gmail.com"
      type="cite">
      <div dir="ltr">Dear all,
        <div><br>
        </div>
        <div>During the execution of <b>x w2w</b> in order to compute
          the overlap matrix, it gave me some error shown below.</div>
        <div><br>
        </div>
        <div>
          <div>hcding@login1  ~/v1/subdir 14:54:07 ><b>x w2w</b></div>
          <div>~/WIEN2k.14/w2w: Exec format error. Wrong Architecture.</div>
          <div>0.000u 0.000s 0:00.02 0.0%      0+0k 0+0io 0pf+0w</div>
          <div>error: command   ~/WIEN2k.14/w2w w2w.def   failed</div>
          <div><br>
          </div>
          <div>I googled this error but got no solutions. Could you help
            fix this? </div>
          <div><br>
          </div>
          <div>Note that, before execution of x w2w, I have used "x
            lapw1' to compute the eigenvectors on full k-mesh. The
            verison of WIEN2k is the latest one, and the version of
            Python is 2.7.2.</div>
          <div><br>
          </div>
          <div><br>
          </div>
          <div>Bests</div>
          <div>Fang</div>
          <div><br>
          </div>
          <div><br>
          </div>
          -- <br>
          <div class="gmail_signature">
            <div dir="ltr">------------------------------------------------------------------------------------------------------------
              <div>Yue-Wen FANG, PhD candidate
                <div>
                  <div
style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)"><a
                      moz-do-not-send="true"
                      href="http://english.ecnu.edu.cn/" target="_blank">East
                      China Normal University <br>
                    </a></div>
                </div>
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            </div>
          </div>
        </div>
      </div>
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