[petsc-users] PCFieldSplitSetSchurPre in fortran
Klaij, Christiaan
C.Klaij at marin.nl
Thu Sep 4 01:29:38 CDT 2014
I did a make allclean, make and install. That solved the two
problems. So I'm guessing these values are taken from the petscksp
module or its predecessors instead of being taken directly from
the finclude/petscpc.h file. Case closed.
Chris
________________________________
From: Matthew Knepley <knepley at gmail.com>
Sent: Wednesday, September 03, 2014 5:02 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Wed, Sep 3, 2014 at 9:46 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
print *, PC_FIELDSPLIT_SCHUR_PRE_USER
gives: 2.
(changing to *_SELFP gives: This name does not have a type, and must have an explicit type. [PC_FIELDSPLIT_SCHUR_PRE_SELFP])
I have
next:/PETSc3/petsc/petsc-pylith$ find include/finclude/ -type f | xargs grep USER
find include/finclude/ -type f | xargs grep USER
include/finclude//petscerrordef.h:#define PETSC_ERR_USER 83
include/finclude//petscpc.h: PetscEnum PC_FIELDSPLIT_SCHUR_PRE_USER
include/finclude//petscpc.h: parameter (PC_FIELDSPLIT_SCHUR_PRE_USER=3)
include/finclude//petsctao.h: PetscEnum TAO_CONVERGED_USER
include/finclude//petsctao.h: PetscEnum TAO_DIVERGED_USER
include/finclude//petsctao.h: parameter ( TAO_CONVERGED_USER = 8)
include/finclude//petsctao.h: parameter ( TAO_DIVERGED_USER = -8)
Where could it possibly be getting this value from? I think from some compiled module which you need to rebuild.
Matt
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________________________________
From: Matthew Knepley <knepley at gmail.com<mailto:knepley at gmail.com>>
Sent: Wednesday, September 03, 2014 4:44 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Wed, Sep 3, 2014 at 9:43 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
I'm sorry, how do I do that?
print it
Matt
Chris
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From: Matthew Knepley <knepley at gmail.com<mailto:knepley at gmail.com>>
Sent: Wednesday, September 03, 2014 4:38 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Wed, Sep 3, 2014 at 9:23 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
Matt,
Thanks, after applying the fix to my petsc-3.5.1 install, the
small Fortran program works as expected.
Now, I would like to change the fortran strategy to the
option "3) Using Fortran modules". So, in the small fortran
program I replace these seven lines
#include <finclude/petscsys.h>
#include <finclude/petscis.h>
#include <finclude/petscvec.h>
#include <finclude/petscmat.h>
#include <finclude/petscpc.h>
#include <finclude/petscksp.h>
#include <finclude/petscviewer.h>
by the two following lines
use petscksp
#include <finclude/petsckspdef.>
This still compiles but I get the two old problem back...
I have no idea why. Can you look at the values of those enumerations?
Matt
Chris
________________________________
From: Matthew Knepley <knepley at gmail.com<mailto:knepley at gmail.com>>
Sent: Wednesday, September 03, 2014 2:12 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Wed, Sep 3, 2014 at 7:00 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
Matt,
Thanks for the fix. If I understand correctly, in an existing
install of petsc-3.5.1, I would only need to replace the
file "finclude/petscpc.h" by the new file for the fix to
work? (instead of downloading dev, configuring, installing on
various machines).
Yes
Matt
Chris
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________________________________
From: Matthew Knepley <knepley at gmail.com<mailto:knepley at gmail.com>>
Sent: Tuesday, September 02, 2014 5:42 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Tue, Sep 2, 2014 at 2:08 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
Matt,
Attached is a small Fortran code that replicates the second problem.
This was a Fortran define problem. I fixed it on next
https://bitbucket.org/petsc/petsc/branch/knepley/fix-pc-fieldsplit-fortran
and it will be in maint and master tomorrow.
Thanks,
Matt
Chris
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dr. ir. Christiaan Klaij
CFD Researcher
Research & Development
MARIN
2, Haagsteeg
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________________________________
From: Klaij, Christiaan
Sent: Friday, August 29, 2014 4:42 PM
To: Matthew Knepley
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: RE: [petsc-users] PCFieldSplitSetSchurPre in fortran
Matt,
The small test code (ex70) is in C and it works fine, the problem
happens in a big Fortran code. I will try to replicate the
problem in a small Fortran code, but that will take some time.
Chris
________________________________
From: Matthew Knepley <knepley at gmail.com<mailto:knepley at gmail.com>>
Sent: Friday, August 29, 2014 4:14 PM
To: Klaij, Christiaan
Cc: petsc-users at mcs.anl.gov<mailto:petsc-users at mcs.anl.gov>
Subject: Re: [petsc-users] PCFieldSplitSetSchurPre in fortran
On Fri, Aug 29, 2014 at 8:55 AM, Klaij, Christiaan <C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>> wrote:
I'm trying PCFieldSplitSetSchurPre with
PC_FIELDSPLIT_SCHUR_PRE_SELFP in petsc-3.5.1 using fortran.
The first problem is that PC_FIELDSPLIT_SCHUR_PRE_SELFP seems to
be missing in fortran, I get the compile error:
This name does not have a type, and must have an explicit type. [PC_FIELDSPLIT_SCHUR_PRE_SELFP]
while compilation works fine with _A11, _SELF and _USER.
Mark Adams has just fixed this.
The second problem is that the call doesn't seem to have any
effect. For example, I have
CALL PCFieldSplitSetSchurPre(pc,PC_FIELDSPLIT_SCHUR_PRE_USER,aa,ierr)
CALL PCFieldSplitSetSchurFactType(pc,PC_FIELDSPLIT_SCHUR_FACT_LOWER,ierr)
This compiles and runs, but ksp_view tells me
PC Object:(sys_) 3 MPI processes
type: fieldsplit
FieldSplit with Schur preconditioner, factorization LOWER
Preconditioner for the Schur complement formed from A11
So changing the factorization from the default FULL to LOWER did
work, but changing the preconditioner from A11 to USER didn't.
I've also tried to run directly from the command line using
-sys_pc_fieldsplit_schur_precondition user -sys_ksp_view
This works in the sense that I don't get the "WARNING! There are
options you set that were not used!" message, but still ksp_view
reports A11 instead of user provided matrix.
Can you send a small test code, since I use this everyday here and it works.
Thanks,
Matt
Chris
dr. ir. Christiaan Klaij
CFD Researcher
Research & Development
E mailto:C.Klaij at marin.nl<mailto:C.Klaij at marin.nl>
T +31 317 49 33 44<tel:%2B31%20317%2049%2033%2044>
MARIN
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-- Norbert Wiener
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-- Norbert Wiener
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