[whk1992]

Hello everyone,

I've just started using OpenFOAM. Everything went well until I attempted to use decomposePar. When I run the command, the system says that:

$ decomposePar
decomposePar: error while loading shared libraries: libmetisDecomp.so: cannot open shared object file: No such file or directory

Am I missing the METIS package? Since I didn't install or maintain the system, I have to find out what went wrong before I approach my supervisor and tell him to fix something that is broken. Same thing goes to rebuilding a component of OpenFOAM --- I need permission from my supervisor.

Thank you for your help.

[whk1992]

Okay, the decomposePar problem was solved. There was an incomplete built of dummy library in the OpenFOAM directory. Now I run into another issue -- mpirun will give the following error:

$ mpirun -np 16 interFoam -parallel


--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting



--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

    From function UPstream::init(int& argc, char**& argv)
    in file UPstream.C at line 37.

FOAM exiting

Any ideas? Note: I checked that impi module is loaded, and that $MPI_ROOT = $I_MPI_ROOT

[whk1992]

Alright, this looks utterly stupid, because I'm going to answer my question again.

Turns out that in ./etc/config/settings.sh, OpenFOAM would only load the proper Pstream library if I had already loaded the exact version of ICC needed. That was because the location of the required Pstream library is specified using $FOAM_MPI, which happened to be the version number of ICC.

Now I can finally use 16 cores instead of one.

[sherif35]

Thank you, I just had this problem.

[derz]

Glad you solved your problem - just wondering if you could you elaborate? How exactly did you edit the settings.sh file to make it work?

[Alhasan]

Originally Posted by whk1992

Alright, this looks utterly stupid, because I'm going to answer my question again.

Turns out that in ./etc/config/settings.sh, OpenFOAM would only load the proper Pstream library if I had already loaded the exact version of ICC needed. That was because the location of the required Pstream library is specified using $FOAM_MPI, which happened to be the version number of ICC.

Now I can finally use 16 cores instead of one.

Hey,

I am having exactly the same problem with the same error can you please elaborate on what you did on this mentioned above step.

Regards,
Hasan K.J

[stephie]

Hello everyone,

I've got the the same problem. Every time, when I try to start <mpirun -np 2 snappyHexMesh -overwrite -parallel> I got this mistake:

--> FOAM FATAL ERROR:
Trying to use the dummy Pstream library.
This dummy library cannot be used in parallel mode

From function UPstream::init(int& argc, char**& argv)
in file UPstream.C at line 37.

FOAM exiting

I found the file settings.sh as you told, but I don't know how to correct it.

It would be very kind, if anyone might help me.

Thank you all.

nice greetings,
Stephie

[Uyan]

Hi I have the same problem.

I went through http://www.cfd-online.com/Forums/ope...e-openmpi.html thread and tried to recompile Pstream but i have a problem in openmpi.

When i try to recompile Pstream I get the following error

UOPwrite.C:29:17: fatal error: mpi.h: No such file or directory
#include "mpi.h"

But this problem was discussed by Bruno

http://www.cfd-online.com/Forums/ope...tml#post534205


if anyone solve this issue Please be kind enough to post the way you did it.

[wyldckat]

Greetings to all!

@Stephie: Uyan figured out how to fix the problem and wrote the solution in this post: http://www.cfd-online.com/Forums/ope...tml#post534224 - post #8

Please try that solution and report back to us if it works for you as well or not.
-------------
edit: Only after a week did I manage to understand you had already tried it and reported it here: http://www.cfd-online.com/Forums/ope...tml#post534307 post #8
-------------

Best regards,
Bruno