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    <p>While I don't know the solution to that error, I can provide some
      comments.</p>
    <p>If I remember correctly, I think the "error during read" means
      one of two things.  Either the stoso.vectorsoup was partially
      written in the previous scf step or the stoso.vectorsoup was fully
      written but the lapw2 read function is unable to read it.</p>
    <p>With the recent compilers, like the 2017 you are using, I believe
      it 'might' be typically the later case that is occurring.  It also
      may be that this sporadic error occurs more often with very large
      size files.  So perhaps the TiC exercise runs fine but a large
      supercell calculation crashes as an example.  If you check the
      file sizes of your calculation without spin orbit coupling
      (sto.vectorup) and with it (stoso.vectorsoup), how do they
      compare?  If stoso.vectorsoup is much larger, maybe it can help
      explain why the calculation without spin orbit coupling works
      fine.</p>
    <p>This problem might not be new.  It may have started with about
      the 15.x Intel compilers:</p>
    <p><a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg15459.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg15459.html</a></p>
    <p>Then, the problems seem to have continued up to the latest 2018
      compilers:</p>
    <p><a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17023.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17023.html</a><br>
    </p>
    <p>As has been mentioned before, Intel may be breaking older file IO
      code to to improve its compliance with more recent <br>
      Fortran specifications:<br>
    </p>
    <p><a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16588.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg16588.html</a><br>
    </p>
    <p>If you haven't already done so, you may want to try compiling
      with -assume nobuffered_io to see if it removes the error or not:</p>
    <p><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></p>
    <p>If you are not using the fixed files for lapw2 (i.e., addtinv.f,
      l2main.F, timeinv1.f), you might also want to try and see if they
      might resolve the error or not:</p>
    <p><a class="moz-txt-link-freetext" href="https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17049.html">https://www.mail-archive.com/wien@zeus.theochem.tuwien.ac.at/msg17049.html</a><br>
    </p>
    <div class="moz-cite-prefix">On 4/12/2018 6:36 AM, Matthew D Redell
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAB6mGWO6J2GtpKgcD8-9A+XL5xQYZZ7PuSp2-LSN4SeVG0ukBg@mail.gmail.com">
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                  <div>
                    <div>Hello,<br>
                      <br>
                    </div>
                    I am currently trying to run a calculation in WIEN2k
                    v17.1 on CentOS7 with Intel Parallel Studio XE
                    2017.6.064. I have been studying supercell
                    structures of SrTi O3 with oxygen vacancies on the
                    surface. I am able to run the calculation without
                    spin orbit coupling just fine, but when I go to
                    include the spin orbit coupling, I receive the
                    following error:<br>
                    <br>
                    forrtl: severe (39): error during read, unit 10,
                    file WIEN2k/stoso/./stoso.vectorsoup<br>
                    Image              PC               
                    Routine            Line        Source             <br>
                    lapw2c             000000000048563E 
                    Unknown               Unknown  Unknown<br>
                    lapw2c             00000000004AC3FF 
                    Unknown               Unknown  Unknown<br>
                    lapw2c             00000000004A9527 
                    Unknown               Unknown  Unknown<br>
                    lapw2c             000000000046B579 
                    read_vec_                 164  read_vec_tmp_.F<br>
                    lapw2c             00000000004452A6 
                    l2main_                   663  l2main_tmp_.F<br>
                    lapw2c             000000000045E920 
                    MAIN__                    718  lapw2_tmp_.F<br>
                    lapw2c             00000000004036DE 
                    Unknown               Unknown  Unknown<br>
                    <a href="http://libc-2.17.so" moz-do-not-send="true">libc-2.17.so</a>      
                    00002B504C7C0C05  __libc_start_main     Unknown 
                    Unknown<br>
                    lapw2c             00000000004035E9 
                    Unknown               Unknown  Unknown<br>
                    <br>
                    >   stop error<br>
                  </div>
                  <div><br>
                  </div>
                  This error occurs whether I am running in parallel
                  mode or in single mode and does not occur for
                  structure without oxygen vacancies. I have tried to
                  track down the error in SRC_lapw2, but to no avail. If
                  there are any suggestions on how to correct this
                  issue, it would be greatly appreciated.<br>
                  <br>
                </div>
                My Structure file:<br>
                <br>
                <br>
                          MULT= 2          ISPLIT= 8<br>
                     -36: X=0.60000000 Y=0.80000000 Z=0.06708528<br>
                O 24       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -37: X=0.40000000 Y=0.20000000 Z=0.33542639<br>
                          MULT= 2          ISPLIT= 8<br>
                     -37: X=0.60000000 Y=0.80000000 Z=0.33542639<br>
                O 25       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -38: X=0.80000000 Y=0.40000000 Z=0.06708528<br>
                          MULT= 2          ISPLIT= 8<br>
                     -38: X=0.20000000 Y=0.60000000 Z=0.06708528<br>
                O 26       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -39: X=0.80000000 Y=0.40000000 Z=0.33542639<br>
                          MULT= 2          ISPLIT= 8<br>
                     -39: X=0.20000000 Y=0.60000000 Z=0.33542639<br>
                O 27       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -40: X=0.00000000 Y=0.00000000 Z=0.06708528<br>
                          MULT= 1          ISPLIT= 8<br>
                O 28       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -41: X=0.00000000 Y=0.00000000 Z=0.33542639<br>
                          MULT= 1          ISPLIT= 8<br>
                O 29       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -42: X=0.40000000 Y=0.20000000 Z=0.20125583<br>
                          MULT= 2          ISPLIT= 8<br>
                     -42: X=0.60000000 Y=0.80000000 Z=0.20125583<br>
                O 30       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -43: X=0.80000000 Y=0.40000000 Z=0.20125583<br>
                          MULT= 2          ISPLIT= 8<br>
                     -43: X=0.20000000 Y=0.60000000 Z=0.20125583<br>
                O 31       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -44: X=0.00000000 Y=0.00000000 Z=0.20125583<br>
                          MULT= 1          ISPLIT= 8<br>
                O 32       NPT=  781  R0=.000100000 RMT=   1.74000  
                Z:   8.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -45: X=0.70000000 Y=0.10000000 Z=0.06708528<br>
                          MULT= 2          ISPLIT= 8<br>
                     -45: X=0.30000000 Y=0.90000000 Z=0.06708528<br>
                Sr1        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -46: X=0.70000000 Y=0.10000000 Z=0.33542639<br>
                          MULT= 2          ISPLIT= 8<br>
                     -46: X=0.30000000 Y=0.90000000 Z=0.33542639<br>
                Sr2        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -47: X=0.90000000 Y=0.70000000 Z=0.06708528<br>
                          MULT= 2          ISPLIT= 8<br>
                     -47: X=0.10000000 Y=0.30000000 Z=0.06708528<br>
                Sr3        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -48: X=0.90000000 Y=0.70000000 Z=0.33542639<br>
                          MULT= 2          ISPLIT= 8<br>
                     -48: X=0.10000000 Y=0.30000000 Z=0.33542639<br>
                Sr4        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -49: X=0.50000000 Y=0.50000000 Z=0.06708528<br>
                          MULT= 1          ISPLIT= 8<br>
                Sr5        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -50: X=0.50000000 Y=0.50000000 Z=0.33542639<br>
                          MULT= 1          ISPLIT= 8<br>
                Sr6        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -51: X=0.70000000 Y=0.10000000 Z=0.20125583<br>
                          MULT= 2          ISPLIT= 8<br>
                     -51: X=0.30000000 Y=0.90000000 Z=0.20125583<br>
                Sr7        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -52: X=0.90000000 Y=0.70000000 Z=0.20125583<br>
                          MULT= 2          ISPLIT= 8<br>
                     -52: X=0.10000000 Y=0.30000000 Z=0.20125583<br>
                Sr8        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                ATOM -53: X=0.50000000 Y=0.50000000 Z=0.20125583<br>
                          MULT= 1          ISPLIT= 8<br>
                Sr9        NPT=  781  R0=.000010000 RMT=   2.50000   Z: 
                38.00000<br>
                LOCAL ROT MATRIX:    1.0000000 0.0000000 0.0000000<br>
                                     0.0000000 1.0000000 0.0000000<br>
                                     0.0000000 0.0000000 1.0000000<br>
                   2      NUMBER OF SYMMETRY OPERATIONS<br>
                 1 0 0 0.00000000<br>
                 0 1 0 0.00000000<br>
                 0 0 1 0.00000000<br>
                       1   A   1 so. oper.  type  orig. index<br>
                -1 0 0 0.00000000<br>
                 0-1 0 0.00000000<br>
                 0 0 1 0.00000000<br>
                       2   A   2<br>
                ~                   <br>
                <br>
                <br>
                <br>
              </div>
              Many Thanks in advance!<br>
              <br>
            </div>
            Matt Redell<br>
          </div>
          Graduate Assistant<br>
        </div>
        Binghamton University Dept. of Phys.<br>
      </div>
    </blockquote>
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