dolfin team mailing list archive

["Garth N. Wells" <g.n.wells@xxxxxxxxxx>]

Anders Logg wrote:
> On Mon, Oct 30, 2006 at 10:49:21AM +0100, Garth N. Wells wrote:
>>
>> Anders Logg wrote:
>>> I can't compile against PETSc after the latest updates to petsc.conf
>>> (see below). I have configured PETSc with --download-mpich=yes so the
>>> extra flags are probably needed.
>>>
>> Can you add just the MPI flags? I removed the extra include paths
>> because they include a path for UMFPACK in the PETSc tree, which is in
>> general a different version to the one installed under /usr/include (or
>> another location) and against which DOLFIN is linked. This will lead to
>> an error if there is a change in the UMFPACK interface.
>>
>> Garth
> 
> I get two extra flags for PETSc when I compile with the old
> petsc.conf:
> 
>   -I/usr/local/lib/petsc
>   -I/usr/local/lib/petsc/externalpackages/mpich2-1.0.3/linux-gnu-cxx-real-debug/include
> 
> We can just ignore the first one which does not really do anything.
> 
> The second gives me exactly the path to the PETSc-configured MPI and
> nothing more.
> 
> Do you get UMFPACK here? My guess is that you will only get UMFPACK
> here if you have told PETSc to download UMFPACK for you.
>

Exactly. I also get include paths for Hypre, SuperLU and Spooles which
PETSc has downloaded.

I let PETSc download and configure the solver packages rather than
compile against an installed version because PETSc downloads the
appropriate version and compiles it with the right flags, and sometimes
the solvers have been tweaked for compatibility (this is/was the case
for Hypre).

Garth


> /Anders
> 
> 
>>> Can we change back?
>>>
>>> /Anders
>>>
>>>
>>> In file included from ../../../src/kernel/la/dolfin/PETScManager.h:20,
>>>                  from ../../../src/kernel/la/dolfin/PETScVector.h:18,
>>>                  from ../../../src/kernel/la/dolfin/SparseVector.h:13,
>>>                  from ../../../src/kernel/la/dolfin/Vector.h:12,
>>>                  from
>>>                  ../../../src/kernel/function/dolfin/Function.h:13,
>>>                  from ../../../src/kernel/form/dolfin/Form.h:12,
>>>                  from
>>>                  ../../../src/kernel/form/dolfin/BilinearForm.h:10,
>>>                  from FEM.cpp:10:
>>> /usr/local/lib/petsc//include/petsc.h:95:17: error: mpi.h: No such
>>> file or directory
>>> /usr/local/lib/petsc//include/petscmath.h:16: error: 'MPI_Datatype'
>>> does not name a type
>>> /usr/local/lib/petsc//include/petscmath.h:17: error: 'MPI_Datatype'
>>> does not name a type
>>> /usr/local/lib/petsc//include/petscmath.h:274: error: 'MPI_Comm' has
>>> not been declared
>>> /usr/local/lib/petsc//include/petscmath.h:275: error: 'MPI_Comm' has
>>> not been declared
>>> /usr/local/lib/petsc//include/petscmath.h:276: error: 'MPI_Comm' has
>>> not been declared
>>> _______________________________________________
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>>>
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