Hi Nek's,<br><br>I have been trying to use the perturbation mode this morning, and I get the following error:<br><br><div style="margin-left: 40px;">/----------------------------------------------------------\\<br>|      _   __ ______ __ __  ______  ____   ____   ____     |<br>

|     / | / // ____// //_/ / ____/ / __ \\ / __ \\ / __ \\    |<br>|    /  |/ // __/  / ,<   /___ \\  / / / // / / // / / /    |<br>|   / /|  // /___ / /| | ____/ / / /_/ // /_/ // /_/ /     |<br>|  /_/ |_//_____//_/ |_|/_____/  \\____/ \\____/ \\____/      |<br>

|                                                          |<br>|----------------------------------------------------------|<br>|                                                          |<br>| NEK5000:  Open Source Spectral Element Solver            |<br>

| COPYRIGHT (c) 2008-2010 UCHICAGO ARGONNE, LLC            |<br>| Version:  1.0rc1 / SVN r714                              |<br>| Web:      <a href="http://nek5000.mcs.anl.gov">http://nek5000.mcs.anl.gov</a>                     |<br>

|                                                          |<br>\\----------------------------------------------------------/<br>                                                              <br><br> Number of processors:           1<br>

 REAL    wdsize      :           8<br> INTEGER wdsize      :           4<br><br><br>  Beginning session:<br>  /home/jean-christophe/Calculs/Cavite2D/Stability/cav.rea                      <br><br> <br> timer accuracy:   0.0000000E+00 sec<br>

<br> read .rea file<br> nelgt/nelgv/lelt:      100      100      100<br> lx1  /lx2  /lx3 :       11        9        9<br><br> mapping elements to processors<br>           0         100         100         100         100  NELV<br>

 RANK     0 IEG       1       2       3       4       5       6       7       8<br>                      9      10      11      12      13      14      15      16<br>                     17      18      19      20      21      22      23      24<br>

                     25      26      27      28      29      30      31      32<br>                     33      34      35      36      37      38      39      40<br>                     41      42      43      44      45      46      47      48<br>

                     49      50      51      52      53      54      55      56<br>                     57      58      59      60      61      62      63      64<br>                     65      66      67      68      69      70      71      72<br>

                     73      74      75      76      77      78      79      80<br>                     81      82      83      84      85      86      87      88<br>                     89      90      91      92      93      94      95      96<br>

                     97      98      99     100<br> element load imbalance:            0         100         100<br> done :: mapping elements to processors<br>  <br>  ERROR READING INITIAL CONDITION/DRIVE FORCE DATA<br>  ABORTING IN ROUTINE RDICDF.<br>

  <br>call exitt: dying ...<br>  <br>backtrace(): obtained 3 stack frames.<br>./nek5000() [0x821eb0d]<br>./nek5000() [0x833f6c6]<br>[0xc]<br>  <br>total elapsed time             :   0.00000E+00 sec<br>total solver time incl. I/O    :   0.00000E+00 sec<br>

time/timestep                  :   0.00000E+00 sec<br>CPU seconds/timestep/gridpt    :   0.00000E+00 sec<br></div><br>Not sure though where it comes from since it's been the very first time I encounter it. My nek version is 714 (the last one I guess).<br>

Any hint?<br><br>Regards,<br clear="all"><br>-- <br>Jean-Christophe<br>