[petsc-users] Building petsc4py / mpi4py

[Matthew Knepley]

On Mon, Jan 23, 2017 at 7:05 AM, Florian Lindner <mailinglists at xgm.de>
wrote:

>
>
> Am 23.01.2017 um 13:59 schrieb Matthew Knepley:
> > On Mon, Jan 23, 2017 at 6:38 AM, Florian Lindner <mailinglists at xgm.de
> <mailto:mailinglists at xgm.de>> wrote:
> >
> >     Hello,
> >
> >     I try to build petsc from the maint branch together with petsc4py
> and mpi4py
> >
> >     python2 configure --download-petsc4py=yes --download-mpi4py=yes
> --with-mpi4py=yes --with-petsc4py=yes --with-debugging=1
> >     make
> >
> >     works without errors, so does make test.
> >
> >     % echo $PYTHONPATH
> >     /home/florian/software/petsc/arch-linux2-c-debug/lib
> >
> >     % ls $PYTHONPATH
> >     libpetsc.so  libpetsc.so.3.7  libpetsc.so.3.7.5  mpi4py
> mpi4py-1.3.1-py3.6.egg-info  petsc  petsc4py
> >     petsc4py-3.7.0-py3.6.egg-info  pkgconfig
> >
> >
> >     but:
> >
> >     % python2 RBF_Load.py
> >     Traceback (most recent call last):
> >       File "RBF_Load.py", line 10, in <module>
> >         petsc4py.init(sys.argv)
> >       File "/home/florian/software/petsc/arch-linux2-c-debug/lib/petsc4py/__init__.py",
> line 42, in init
> >         PETSc = petsc4py.lib.ImportPETSc(arch)
> >       File "/home/florian/software/petsc/arch-linux2-c-debug/lib/petsc4py/lib/__init__.py",
> line 29, in ImportPETSc
> >         return Import('petsc4py', 'PETSc', path, arch)
> >       File "/home/florian/software/petsc/arch-linux2-c-debug/lib/petsc4py/lib/__init__.py",
> line 63, in Import
> >         fo, fn, stuff = imp.find_module(name, pathlist)
> >     ImportError: No module named PETSc
> >
> >
> >     Anyone having an idea what could be the problem here?
> >
> >
> > Is your PETSC_ARCH correct?
>
> I think so:
>
> % ls $PETSC_DIR/$PETSC_ARCH
> bin  CMakeCache.txt  CMakeFiles  cmake_install.cmake  externalpackages
> include  initial_cache_file.cmake  lib  Makefile
>  obj  share
>
> % echo $PETSC_DIR
> /home/florian/software/petsc
>
> % echo $PETSC_ARCH
> arch-linux2-c-debug


For Python import, its either the module, or the path. Can you cd down to
PETSc.so and import it directly?

  Matt


>
> Florian
>



-- 
What most experimenters take for granted before they begin their
experiments is infinitely more interesting than any results to which their
experiments lead.
-- Norbert Wiener
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