[NotOverUnderated]

Hello,
I have tried installing the metis library on Ubuntu 22.04. I have installed it using the package manager: sudo apt install libmetis-dev.

I have also compiled the interface for it by following these steps:

cp -r $FOAM_SRC/parallel/decompose/metisDecomp/ /tmp/metisDecomp

cd /tmp/metisDecomp
wmake

The building of metisDecomp was successful. However, when I try to use metis for decomposition, e.g.:

//....
numberOfSubdomains 4;

method          metis;

When I run the decomposePar utility, I get the following message:


Calculating distribution of cells
Decomposition method metis [4] (region region0)
decomposePar: symbol lookup error: /home/ONESP/OpenFOAM/ONESP-v2306/platforms/linux64GccDPInt32Opt/lib/libmetisDecomp.so: undefined symbol: METIS_SetDefaultOptions


I have tried also to uninstall the version of metis installed by the package manager, then downloaded version 5.1.0 from http://glaros.dtc.umn.edu/gkhome/metis/metis/download and built it successfully. But I still get the same error message.

[olesen]

where did you copy back the resulting library? If it is not somewhere in your LD_LIBRARY_PATH it will not load.

[NotOverUnderated]

Originally Posted by olesen

where did you copy back the resulting library? If it is not somewhere in your LD_LIBRARY_PATH it will not load.

Thank you for your reply.

The path is set in Make/files:

metisDecomp.C

LIB = $(FOAM_USER_LIBBIN)/libmetisDecomp

[NotOverUnderated]

I have solved the issue by explicitly specifying the paths (for include and libs) of the metis library in Make/options instead of the using the default one from OpenFOAM:

EXE_INC = \
    -I/usr/local/include/ \
    -I$(LIB_SRC)/parallel/decompose/decompositionMethods/lnInclude

LIB_LIBS = \
    -L$(FOAM_LIBBIN) -ldecompositionMethods \
    -L/usr/local/lib/ \
    -lmetis$(METIS_LIBNAME_SUFFIX)