[fedez91]

Hi everyone, I am trying to compile OFv2012 in a supercomputer (PSC Bridges) using gcc and OpenMPI. Everything compiles well except a few libraries, including scotch and metis (the ones I need to decompose my domain and run it in parallel).

==> skip kahip (no header)
==> skip metis (no header)
==> skip scotch (no header)
==> skip scotch (no header)
==> skip randomProcesses library (no FFTW)
==> skip SloanRenumber (no boost)
==> skip zoltanRenumber (no library)
==> skip ccmio (no header)
==> skip optional libccm adapter
==> skip randomProcesses library (no FFTW)
==> skip dnsFoam solver (no FFTW)
==> skip noise utility (no FFTW)
==> skip optional ccm conversion components (no libccm)
==> skip boxTurb utility (no FFTW)
==> skip kahip (no header)
==> skip metis (no header)
==> skip scotch (no header)
==> skip scotch (no header)
==> skip randomProcesses library (no FFTW)
==> skip SloanRenumber (no boost)
==> skip zoltanRenumber (no library)
==> skip ccmio (no header)
==> skip optional libccm adapter
==> skip randomProcesses library (no FFTW)
==> skip dnsFoam solver (no FFTW)
==> skip boxTurb utility (no FFTW)
==> skip optional ccm conversion components (no libccm)
==> skip noise utility (no FFTW)

If I go to $WM_PROJECT_DIR/src/parallel/decompose/scotchDecomp/ and do wmake I get:

> wmake
Making dependency list for source file scotchDecomp.C
wmkdepend: could not open 'scotch.h' for source file 'scotchDecomp.C': No such file or directory
g++ -std=c++11 -m64 -pthread -DOPENFOAM=2006 -DWM_DP -DWM_LABEL_SIZE=32 -Wall -Wextra -Wold-style-cast -Wnon-virtual-dtor -Wno-unused-parameter -Wno-invalid-offsetof -Wno-attributes -Wno-unknown-pragmas  -O3  -DNoRepository -ftemplate-depth-100 -I -I../decompositionMethods/lnInclude -iquote. -IlnInclude -I/home/zabaleta/OpenFOAM/OpenFOAM-v2006/src/OpenFOAM/lnInclude -I/home/zabaleta/OpenFOAM/OpenFOAM-v2006/src/OSspecific/POSIX/lnInclude   -fPIC -c scotchDecomp.C -o /home/zabaleta/OpenFOAM/OpenFOAM-v2006/build/linux64GccDPInt32Opt/src/parallel/decompose/scotchDecomp/scotchDecomp.o
In file included from scotchDecomp.C:29:0:
scotchDecomp.H:222:29: fatal error: metisLikeDecomp.H: No such file or directory
compilation terminated.
make: *** [/home/zabaleta/OpenFOAM/OpenFOAM-v2006/build/linux64GccDPInt32Opt/src/parallel/decompose/scotchDecomp/scotchDecomp.o] Error 1

The missing file is located at:

 >ls ../decompositionMethods/lnInclude/metisLikeDecomp.H
../decompositionMethods/lnInclude/metisLikeDecomp.H

and the Make/options file includes this directory

>more Make/options
EXE_INC = \
    -I$(SCOTCH_INC_DIR) \
    -I../decompositionMethods/lnInclude

LIB_LIBS = \
    -ldecompositionMethods \
    -L$(SCOTCH_LIB_DIR) \
    -lscotch

/* errexit, except for windows compile (already in library) */
ifeq (,$(findstring windows,$(WM_OSTYPE)))
    LIB_LIBS += -lscotcherrexit
endif

/* May require librt, but scotch does not declare the dependency */
ifeq ($(EXT_SO),.so)
    LIB_LIBS += -lrt
endif

I don't understand why this is not compiling! Any idea?

[olesen]

You either need to use scotch from the system or download the ThirdParty source pack as well.
If you use a system like spack, it should all just work.

[fedez91]

That solve my problem. I didn't know scotch was an external library. Thank you a lot!

[newOpenfoamUser]

Hi,

I have the same problem when compiling openfoam. However, I do not understand what is the required steps from this thread. I have tried to install scotch by "sudo apt install scotch" and "sudo apt-get install libscotch-dev". I tried to recompile openfoam after that and it still doesn't compile the scotch library. Can you list down the exact steps to make it work? Thanks!

[olesen]

If you are using a system scotch, you also need to specify this (in etc/config.sh/scotch).

If you want a convenient wrapper for that particular edit, then change to the OpenFOAM installation directory and use the following:

bin/tools/foamConfigurePaths \
    -scotch scotch-system

This is how all of the system settings are handling when building RPM or Ubuntu packs.
Eg,
https://build.opensuse.org/package/v.../openfoam.spec

[fedez91]

Hi, have you downloaded the ThirdParty packages? I think by default the compiler looks for the package inside that folder. Check if the scotch library is compiled correctly inside that directory.

[newOpenfoamUser]

Thanks for the replies! I deleted the previous installation and recompile it with the ThirdParty folder. It works now. It turns out that I put the ThirdParty folder in the wrong location during my first installation.