[petsc-users] matrix-free KSPLSQR and matrix norm
Alexander Grayver
agrayver at gfz-potsdam.de
Tue Jun 28 04:59:26 CDT 2011
Thanks Barry & Matthew, it works now.
Regards,
Alexander
On 27.06.2011 23:16, Barry Smith wrote:
> This code is kind of silly because it doesn't actually ever use that Matrix norm by default so in petsc-3.1 just edit src/ksp/ksp/impls/lsqr/lsqr.c and comment out the line where it calls MatNorm()
> then run make in that one directory
>
> Good luck
>
> Barry
>
> On Jun 27, 2011, at 12:44 PM, Alexander Grayver wrote:
>
>> Actually, I tried, but haven't managed to do this in fortran:
>>
>> test.exe -log_summary -ksp_view
>> [0]PETSC ERROR: MatShellSetOperation_Fortran() line 107 in src/mat/impls/shell/ftn-custom/D:\dev\PETSC-~3.1-P\src\mat\impls\shell\FTN-CU~1\zshellf.c
>>
>> job aborted:
>> [ranks] message
>>
>> [0] application aborted
>> aborting MPI_COMM_WORLD, error 1, comm rank 0
>>
>> It seems that MATOP_NORM is not supported from Fortran. Why is that so?
>>
>> Regards,
>> Alexander
>>
>> On 27.06.2011 17:12, Matthew Knepley wrote:
>>> On Mon, Jun 27, 2011 at 9:54 AM, Alexander Grayver<agrayver at gfz-potsdam.de> wrote:
>>>>> Please send the entire error message (this is missing the stack), but I am guessing you
>>>>> are not changed the default preconditioner (ILU) which cannot act on a shell matrix. Use
>>>>> -ksp_view to see what solver is begin used.
>>> The full error message:
>>>
>>> test.exe -log_summary -ksp_view
>>>
>>> The LSQR solver uses the Frobenius norm of the matrix. In order to use a MATSHELL, you
>>> must implement MatNorm using
>>>
>>> http://www.mcs.anl.gov/petsc/petsc-as/snapshots/petsc-dev/docs/manualpages/Mat/MatShellSetOperation.html
>>>
>>> Thanks,
>>>
>>> Matt
>>>
>>>
>>> [0]PETSC ERROR: --------------------- Error Message ------------------------------------
>>> [0]PETSC ERROR: No support for this operation for this object type!
>>> [0]PETSC ERROR: Mat type shell!
>>> [0]PETSC ERROR: ------------------------------------------------------------------------
>>> [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 7, Mon Dec 20 14:26:37 CST 2010
>>> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
>>> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
>>> [0]PETSC ERROR: See docs/index.html for manual pages.
>>> [0]PETSC ERROR: ------------------------------------------------------------------------
>>> [0]PETSC ERROR: test.exe on a cygwin-cx named M0. by Unknown Mon Jun 27 16:51:32 2011
>>> [0]PETSC ERROR: Libraries linked from /cygdrive/d/dev/petsc-3.1-p7/cygwin-cxx-debug/lib
>>>
>>> [0]PETSC ERROR: Configure run at Fri Mar 4 10:10:06 2011
>>> [0]PETSC ERROR: Configure options --with-cc="win32fe cl" --with-fc="win32fe ifort" --with-cxx="win32fe cl" --with-windows-graphics=0
>>> --with-precision=double --with-scalar-type=complex --with-clanguage=cxx --with-mpi-include=/cygdrive/d/Dev/HPC_2008_SDK/Include --wi
>>> /HPC_2008_SDK/Lib/amd64/msmpi.lib,/cygdrive/d/Dev/HPC_2008_SDK/Lib/amd64/msmpifec.lib]" --useThreads=0 --useThreads=0
>>>
>>> [0]PETSC ERROR: ------------------------------------------------------------------------
>>> [0]PETSC ERROR: MatNorm() line 4512 in src/mat/interface/D:\dev\PETSC-~3.1-P\src\mat\INTERF~1\matrix.c
>>> [0]PETSC ERROR: KSPSolve_LSQR() line 90 in src/ksp/ksp/impls/lsqr/D:\dev\PETSC-~3.1-P\src\ksp\ksp\impls\lsqr\lsqr.c
>>> [0]PETSC ERROR: KSPSolve() line 396 in src/ksp/ksp/interface/D:\dev\PETSC-~3.1-P\src\ksp\ksp\INTERF~1\itfunc.c
>>>
>>> job aborted:
>>> [ranks] message
>>>
>>> [0] application aborted
>>> aborting MPI_COMM_WORLD, error 56, comm rank 0
>>>
>>>
>>> On 27.06.2011 16:47, Matthew Knepley wrote:
>>>> On Mon, Jun 27, 2011 at 9:34 AM, Alexander Grayver<agrayver at gfz-potsdam.de> wrote:
>>>> Thanks Barry,
>>>>
>>>> Now I get this:
>>>>
>>>> Please send the entire error message (this is missing the stack), but I am guessing you
>>>> are not changed the default preconditioner (ILU) which cannot act on a shell matrix. Use
>>>> -ksp_view to see what solver is begin used.
>>>>
>>>> Matt
>>>>
>>>> [0]PETSC ERROR: --------------------- Error Message ----------------------------
>>>> --------
>>>> [0]PETSC ERROR: No support for this operation for this object type!
>>>> [0]PETSC ERROR: Mat type shell!
>>>>
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 7, Mon Dec 20 14:26:37 CST 20
>>>> 10
>>>> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
>>>> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
>>>> [0]PETSC ERROR: See docs/index.html for manual pages.
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: test.exe on a cygwin
>>>> -cx named MT0. by Unknown Mon Jun 27 16:30:42 2011
>>>>
>>>> [0]PETSC ERROR: Libraries linked from /cygdrive/d/dev/petsc-3.1-p7/cygwin-cxx-de
>>>> bug/lib
>>>> [0]PETSC ERROR: Configure run at Fri Mar 4 10:10:06 2011
>>>> [0]PETSC ERROR: Configure options --with-cc="win32fe cl" --with-fc="win32fe ifor
>>>> t" --with-cxx="win32fe cl" --with-windows-graphics=0 --download-f-blas-lapack=1
>>>> --with-precision=double --with-scalar-type=complex --with-clanguage=cxx --with-m
>>>> pi-include=/cygdrive/d/Dev/HPC_2008_SDK/Include --with-mpi-lib="[/cygdrive/d/Dev
>>>> /HPC_2008_SDK/Lib/amd64/msmpi.lib,/cygdrive/d/Dev/HPC_2008_SDK/Lib/amd64/msmpife
>>>> c.lib]" --useThreads=0 --useThreads=0
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: MatNorm() line 4512 in src/mat/interface/D:\dev\PETSC-3.1-P\src\mat\INTERF~1\matrix.c
>>>>
>>>>
>>>> On 27.06.2011 16:32, Barry Smith wrote:
>>>> You should pass H as third argument to KSPSetOperators() as well as the second.
>>>>
>>>> Barry
>>>>
>>>> On Jun 27, 2011, at 9:23 AM, Alexander Grayver wrote:
>>>>
>>>> Hello!
>>>>
>>>> I'm using matrix-free formulation and KSPLSQR to solve normal equations system:
>>>>
>>>> (A'*A)b = -g
>>>>
>>>> I managed to write all necessary code:
>>>>
>>>> call MatCreateShell(MPI_COMM_WORLD,m,N,N,N,PETSC_NULL_INTEGER,H,ierr)
>>>> call MatShellSetOperation(H,MATOP_MULT,MFMatMult,ierr)
>>>>
>>>> call KSPCreate(MPI_COMM_WORLD,ksp,ierr);CHKERRQ(ierr)
>>>> call KSPSetType(ksp,KSPLSQR,ierr);CHKERRQ(ierr)
>>>> call KSPGetPC(ksp,pc,ierr);CHKERRQ(ierr)
>>>> call PCSetType(pc,PCNONE,ierr);CHKERRQ(ierr)
>>>> call KSPSetOperators(ksp,H,PETSC_NULL_OBJECT,SAME_PRECONDITIONER,ierr);CHKERRQ(ierr)
>>>> call KSPSolve(ksp,g,b,ierr);CHKERRQ(ierr)
>>>>
>>>>
>>>> but fail in KSPSolve stage with that:
>>>> [0]PETSC ERROR: --------------------- Error Message ----------------------------
>>>> --------
>>>> [0]PETSC ERROR: Object is in wrong state!
>>>> [0]PETSC ERROR: Mat object's type is not set: Argument # 1!
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: Petsc Release Version 3.1.0, Patch 7, Mon Dec 20 14:26:37 CST 20
>>>> 10
>>>> [0]PETSC ERROR: See docs/changes/index.html for recent updates.
>>>> [0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.
>>>> [0]PETSC ERROR: See docs/index.html for manual pages.
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: test.exe on a cygwin
>>>>
>>>> -cx named MT0. by Unknown Mon Jun 27 16:18:43 2011
>>>> [0]PETSC ERROR: Libraries linked from /cygdrive/d/dev/petsc-3.1-p7/cygwin-cxx-de
>>>> bug/lib
>>>> [0]PETSC ERROR: Configure run at Fri Mar 4 10:10:06 2011
>>>> [0]PETSC ERROR: Configure options --with-cc="win32fe cl" --with-fc="win32fe ifor
>>>> t" --with-cxx="win32fe cl" --with-windows-graphics=0 --download-f-blas-lapack=1
>>>> --with-precision=double --with-scalar-type=complex --with-clanguage=cxx --with-m
>>>> pi-include=/cygdrive/d/Dev/HPC_2008_SDK/Include --with-mpi-lib="[/cygdrive/d/Dev
>>>> /HPC_2008_SDK/Lib/amd64/msmpi.lib,/cygdrive/d/Dev/HPC_2008_SDK/Lib/amd64/msmpife
>>>> c.lib]" --useThreads=0 --useThreads=0
>>>> [0]PETSC ERROR: ----------------------------------------------------------------
>>>> --------
>>>> [0]PETSC ERROR: MatNorm() line 4507 in src/mat/interface/D:\dev\PETSC-3.1-P\src\mat\INTERF~1\matrix.c
>>>> [0]PETSC ERROR: KSPSolve_LSQR() line 90 in src/ksp/ksp/impls/lsqr/D:\dev\PETSC-3.1-P\src\ksp\ksp\impls\lsqr\lsqr.c
>>>>
>>>> Any suggestions? Do I have to set MATOP_NORM operation? Then how?
>>>>
>>>> Regards,
>>>> Alexander
>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> 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
>>>
>>>
>>>
>>> --
>>> 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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