<html>
  <head>
    <meta content="text/html; charset=windows-1252"
      http-equiv="Content-Type">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <div class="moz-cite-prefix">Hi Ravi<br>
      <br>
      The first error means you have no restart files, which is obvious
      for the first run. Restart files are (ARP### and ARV###) are
      generated at the end of the run if the tolerance is not reached.
      You control it by parameter 69 in ###.rea. Simply set it to 0 for
      the first run. In addition parameters 71 and 72 set the checkpoint
      number for reading and writing (to avoid overwriting). Number of
      files depends on the other parameters and preprocessing flags
      used.<br>
      Regards<br>
      Adam<br>
      <br>
      On 2016-03-27 04:45, <a class="moz-txt-link-abbreviated" href="mailto:nek5000-users@lists.mcs.anl.gov">nek5000-users@lists.mcs.anl.gov</a> wrote:<br>
    </div>
    <blockquote
cite="mid:mailman.18331.1459046724.24727.nek5000-users@lists.mcs.anl.gov"
      type="cite">
      <div dir="ltr">
        <div>
          <div>
            <div>
              <div>Hi Adam, <br>
                <br>
              </div>
              I am guessing I am using your code for stability tools in
              NEK. I have downloaded the code from <a
                moz-do-not-send="true"
                href="https://nek5000.mcs.anl.gov/toolboxes/"
                target="_blank"><a class="moz-txt-link-freetext" href="https://nek5000.mcs.anl.gov/toolboxes/">https://nek5000.mcs.anl.gov/toolboxes/</a></a>.<br>
              <br>
            </div>
            I am trying to reproduce the ext_cyl example, as is, to get
            some familiarity. <br>
            <br>
          </div>
          I have been able to compile the code (after some modifications
          to compile on the platform I intent to run my analysis). I
          have the base flow file "ext_cyl0.f00005" in the simulation
          folder. When I run the ext_cyl, I get the following error:<br>
          <br>
          <br>
******************************************************************************************************************<br>
          call userchk<br>
           ARNOLDI:<br>
           Reading checkpoint<br>
                 0       0 OPEN: ARPext_cyl0.f00005<br>
          ARPext_cyl0.f00005<br>
          byte_read() :: fopen failure2!<br>
           ERROR: mfi_arnp, wrong header; abort.<br>
          <br>
          call exitt: dying ...<br>
******************************************************************************************************************<br>
        </div>
        <br>
        <div><br>
          <div>I have also pasted below  the parameters printed in the
            log file for your reference.  <br>
          </div>
          <div><br>
******************************************************************************************************************<br>
          </div>
          122   Parameters from
          <a class="moz-txt-link-freetext" href="file:/global/u2/r/rtumkur/eig_Setup/ARNOLDI/ext_cyl.rea">file:/global/u2/r/rtumkur/eig_Setup/ARNOLDI/ext_cyl.rea</a><br>
             1      1.00000     p001 DENSITY<br>
             2     -50.0000     p002 VISCOS<br>
             7      1.00000     p007 RHOCP<br>
             8      1.00000     p008 CONDUCT<br>
            11      50003.0     p011 NSTEPS<br>
            12    -5.000000E-03 p012 DT<br>
            15      2500.00     p015 IOSTEP<br>
            17      1.00000     p017<br>
            18     0.500000E-01 p018 GRID < 0 --> # cells on
          screen<br>
            19     -1.00000     p019 INTYPE<br>
            20      7.00000     p020 NORDER<br>
            21     0.100000E-09 p021 DIVERGENCE<br>
            22     0.100000E-09 p022 HELMHOLTZ<br>
            24     0.100000E-09 p024 TOLREL<br>
            25     0.100000E-04 p025 TOLABS<br>
            26      1.00000     p026 COURANT/NTAU<br>
            27      3.00000     p027 TORDER<br>
            28      0.00000     p028 TORDER: mesh velocity (0: p28=p27)<br>
            31      -1.00000     p031 NPERT: #perturbation modes<br>
            59      0.00000     p059 !=0 --> full Jac. eval. for each
          el.<br>
            65      1.00000     p065 #iofiles (eg, 0 or 64); <0
          --> sep. dirs<br>
            66      4.00000     p066 output : <0=ascii, else binary<br>
            67      4.00000     p067 restart: <0=ascii, else binary<br>
            69      1.00000     p069 : PROPER RESTART: 0 - do not use
          my_full_restart; 1- use it<br>
            71      5.00000     p071 : ARNOLDI: checkpoint file number
          for restart (reading)<br>
            72      6.00000     p072 : ARNOLDI: checkpoint file number
          for saving data<br>
            99      3.00000     p099 dealiasing: <0--> off/3-->
          old/4--> new<br>
           102      1.00000     p102 Dump out divergence at each time
          step<br>
           108      1.00000     p108 : ARNOLDI: 0 if no arnoldi<br>
           109      40.0000     p109 : ARNOLDI: frequency of calling
          arn_solve<br>
           110      4.00000     p110 : ARNOLDI: maximal number of
          arnoldi cycles<br>
           111      90.0000     p111 : ARNOLDI: size of Krylov space<br>
           112      30.0000     p112 : ARNOLDI: number of eigenvectors<br>
           113      1.00000E-06 p113 : ARNOLDI: arpack tolerance<br>
           119      1.00000     p119 : SPONGE STRENGTH<br>
           120      25.0000     p120 : SPONGE TOTAL WIDTH<br>
           121      3.00000     p121 : SPONGE DROP WIDTH (INFLOW)<br>
           122      5.00000     p122 : SPONGE RISE WIDTH (OUTFLOW)<br>
******************************************************************************************************************<br>
          <br>
        </div>
        <div>I'd appreciate if you can let me what am I missing in the
          set up which might be leading to this issue? Please let me
          know if you need any other information to understand this
          issue.<br>
          <br>
          <br>
        </div>
        <div>Regards, <br>
        </div>
        <div>Ravi<br>
          <br>
        </div>
        <div>
          <div>
            <div><br>
            </div>
          </div>
        </div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Tue, Mar 15, 2016 at 4:06 AM, <span
            dir="ltr"><<a moz-do-not-send="true"
              href="mailto:nek5000-users@lists.mcs.anl.gov"
              target="_blank">nek5000-users@lists.mcs.anl.gov</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi<br>
            <br>
            To force base flow to be constant you have to set negative
            param(31) in your ###.rea file. Something like<br>
               -1.00000     p031 NPERT: #perturbation modes<br>
            Of course you need the base flow as well. It could be
            analytical one set in useric, or just a field read during
            initialisation.<br>
            Regards<br>
            Adam
            <div class="HOEnZb">
              <div class="h5"><br>
                <br>
                <br>
                On 2016-03-15 08:49, <a moz-do-not-send="true"
                  href="mailto:nek5000-users@lists.mcs.anl.gov"
                  target="_blank">nek5000-users@lists.mcs.anl.gov</a>
                wrote:<br>
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  Hi Neks,<br>
                  <br>
                  I'm trying to use the linear stability tool of
                  Nek5000.<br>
                  <br>
                  To start with, I am trying to run the ext_cyl example.
                  However, I have found the following problem:<br>
                  <br>
                  ERROR: arnoldi assumes constant base flow.<br>
                  <br>
                  I have found on the README tutorial that the base flow
                  has to be specified on the .rea file. I have included
                  a file in the PRESOLVE/RESTART option, however I still
                  have the same error.<br>
                  <br>
                  What should I modify?<br>
                  <br>
                  Finally, I have also used a subroutine defined in the
                  .usr file that reads the file containing the base
                  flow. However, the error persist...<br>
                  <br>
                  Could you help me, please?<br>
                  <br>
                  Cheers<br>
                  SL<br>
                  _______________________________________________<br>
                  Nek5000-users mailing list<br>
                  <a moz-do-not-send="true"
                    href="mailto:Nek5000-users@lists.mcs.anl.gov"
                    target="_blank">Nek5000-users@lists.mcs.anl.gov</a><br>
                  <a moz-do-not-send="true"
                    href="https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users"
                    rel="noreferrer" target="_blank">https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users</a><br>
                </blockquote>
                <br>
                _______________________________________________<br>
                Nek5000-users mailing list<br>
                <a moz-do-not-send="true"
                  href="mailto:Nek5000-users@lists.mcs.anl.gov"
                  target="_blank">Nek5000-users@lists.mcs.anl.gov</a><br>
                <a moz-do-not-send="true"
                  href="https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users"
                  rel="noreferrer" target="_blank">https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users</a><br>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
        <br clear="all">
        <br>
        -- <br>
        <div class="gmail_signature">
          <div dir="ltr"><span style="font-family:arial
              narrow,sans-serif"><font size="4">Ravi Kumar R. Tumkur</font>,<b>
              </b><font size="4">PhD.</font><br>
              Phone: <a moz-do-not-send="true" value="+12177787538">217
                778 7538</a></span></div>
        </div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
Nek5000-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Nek5000-users@lists.mcs.anl.gov">Nek5000-users@lists.mcs.anl.gov</a>
<a class="moz-txt-link-freetext" href="https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users">https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users</a>
</pre>
    </blockquote>
    <br>
  </body>
</html>