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    <p>SIGSEGV errors can have many possible causes [
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg14476.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg14476.html</a>
      ].</p>
    <p>In your case, I see W_14.2 below.  So perhaps it is due to a bug
      in an the older WIEN2k 14.2 or wien2wannier version that you are
      using.  You might try the newer wien2wannier version in WIEN2k
      17.1.  However, you have to patch it [
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16099.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16099.html</a>
      ].</p>
    <p>What ifort compiler version are you using?  If it is a 2016 and
      2017, maybe it is caused by the IO problem with large files [
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16802.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16802.html</a>
      ].<br>
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    <div class="moz-cite-prefix">On 12/6/2017 3:58 AM, pachineela
      rambabu wrote:<br>
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cite="mid:CAB+_m+pw9LmyBCStb4VFPbx-MbZj1qC12Kpd0o72geTpGdKf-A@mail.gmail.com">
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          <div>While running "x w2w" command, I encountered following
            error:<br>
            <br>
            forrtl: severe (174): SIGSEGV, segmentation fault occurred<br>
            Image              PC                Routine           
            Line        Source             <br>
            w2wc               00000000004EC771  Unknown              
            Unknown  Unknown<br>
            w2wc               00000000004EA8AB  Unknown              
            Unknown  Unknown<br>
            w2wc               00000000004935B4  Unknown              
            Unknown  Unknown<br>
            w2wc               00000000004933C6  Unknown              
            Unknown  Unknown<br>
            w2wc               000000000043AFE9  Unknown              
            Unknown  Unknown<br>
            w2wc               000000000043EBF6  Unknown              
            Unknown  Unknown<br>
            libpthread-2.23.s  00002AD859B82390  Unknown              
            Unknown  Unknown<br>
            w2wc               0000000000465AF7  Unknown              
            Unknown  Unknown<br>
            w2wc               0000000000426F83 
            read_vec_                  52  read_vec.f<br>
            w2wc               0000000000420F70 
            MAIN__                    159  main.f<br>
            w2wc               0000000000402FAE  Unknown              
            Unknown  Unknown<br>
            <a href="http://libc-2.23.so" moz-do-not-send="true">libc-2.23.so</a>      
            00002AD85A65D830  __libc_start_main     Unknown  Unknown<br>
            w2wc               0000000000402EA9  Unknown              
            Unknown  Unknown<br>
            0.3u 0.2s 0:01.03 56.3% 0+0k 88016+16io 0pf+0w<br>
            error: command   /home/kanchana/Soft/<font color="#ff0000">W_14.2</font>/w2wc
            w2w.def   failed<br>
            <br>
            <br>
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          Please tell me how to rectify this problem.  For cubic
          systems, I didn't get any problem. For hexagonal system, this
          problem occurred. <br>
          <br>
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        thanks in advance,<br>
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              <div>-- <br>
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                                <div><b>P. Rambabu</b><br>
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                                PhD Scholor<br>
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                              <div>Department of Physics, IIT Hyderabad,
                                India<br>
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                            Mobile: 9074508220.<br>
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