[Nek5000-users] Running Simulations in Parallel with nekbmpi

nek5000-users at lists.mcs.anl.gov nek5000-users at lists.mcs.anl.gov
Wed May 11 13:44:10 CDT 2011


Hello,

I recently built nek on a new machine with an Intel i7.  I think I have all
the necessary libraries and packages installed but it looks like nek is
trying to run 4 processors in series when I use nekbmpi.   Has anyone
experienced a similar problem?  Below is the header of my logfile for a case
where I tried running with two processors.


Thanks,

John

/----------------------------------------------------------\\
|      _   __ ______ __ __  ______  ____   ____   ____     |
|     / | / // ____// //_/ / ____/ / __ \\ / __ \\ / __ \\    |
|    /  |/ // __/  / ,<   /___ \\  / / / // / / // / / /    |
|   / /|  // /___ / /| | ____/ / / /_/ // /_/ // /_/ /     |
|  /_/ |_//_____//_/ |_|/_____/  \\____/ \\____/ \\____/      |
|                                                          |
|----------------------------------------------------------|
|                                                          |
| NEK5000:  Open Source Spectral Element Solver            |
| COPYRIGHT (c) 2008-2010 UCHICAGO ARGONNE, LLC            |
| Version:  1.0rc1 / SVN r684                              |
| Web:      http://nek5000.mcs.anl.gov                     |
|                                                          |
\\----------------------------------------------------------/


 Number of processors:           1
 REAL    wdsize      :           8
 INTEGER wdsize      :           4
/----------------------------------------------------------\\
|      _   __ ______ __ __  ______  ____   ____   ____     |
|     / | / // ____// //_/ / ____/ / __ \\ / __ \\ / __ \\    |
|    /  |/ // __/  / ,<   /___ \\  / / / // / / // / / /    |
|   / /|  // /___ / /| | ____/ / / /_/ // /_/ // /_/ /     |
|  /_/ |_//_____//_/ |_|/_____/  \\____/ \\____/ \\____/      |
|                                                          |
|----------------------------------------------------------|
|                                                          |
| NEK5000:  Open Source Spectral Element Solver            |
| COPYRIGHT (c) 2008-2010 UCHICAGO ARGONNE, LLC            |
| Version:  1.0rc1 / SVN r684                              |
| Web:      http://nek5000.mcs.anl.gov                     |
|                                                          |
\\----------------------------------------------------------/


 Number of processors:           1
 REAL    wdsize      :           8
 INTEGER wdsize      :           4


  Beginning session:

/home/akerleyj/repos/nek5_svn/research/flatchan_Re1600/fc1d.rea



 timer accuracy:   0.0000000E+00 sec

 read .rea file
 nelgt/nelgv/lelt:     1510     1510     1600
 lx1  /lx2  /lx3 :        8        8        8

 mapping elements to processors
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