[petsc-dev] PCApplyTranspose in BiCG
Alexander Grayver
agrayver at gfz-potsdam.de
Thu Mar 22 12:30:47 CDT 2012
Jed,
Ok, I see. Initially I've changed solver because I observed one thing. I
have two petsc-dev (one is older than the other) versions compiled.
Running the same program with both gives different results:
./solveTest -ksp_view -ksp_converged_reason -ksp_monitor_true_residual
-log_summary -mat_type aij -ksp_rtol 1.0e-7 -ksp_type tfqmr -pc_type sor
-ksp_max_it 750
0 KSP preconditioned resid norm 9.760858225033e-10 true resid norm
4.108026443997e-08 ||r(i)||/||b|| 1.000000000000e+00
1 KSP preconditioned resid norm 9.497939702484e-10 true resid norm
3.591828545356e-08 ||r(i)||/||b|| 8.743440662618e-01
1 KSP preconditioned resid norm 1.341212527158e-09 true resid norm
3.754099340764e-08 ||r(i)||/||b|| 9.138449793207e-01
2 KSP preconditioned resid norm 9.481744679086e-10 true resid norm
3.710424003325e-08 ||r(i)||/||b|| 9.032132713620e-01
2 KSP preconditioned resid norm 1.340878639500e-09 true resid norm
3.730261027312e-08 ||r(i)||/||b|| 9.080421166135e-01
3 KSP preconditioned resid norm 9.481415577317e-10 true resid norm
3.725585425324e-08 ||r(i)||/||b|| 9.069039540306e-01
...
750 KSP preconditioned resid norm 1.340874209607e-09 true resid norm
3.726506102951e-08 ||r(i)||/||b|| 9.071280708031e-01
Linear solve did not converge due to DIVERGED_ITS iterations 750
KSP Object: 1 MPI processes
type: tfqmr
maximum iterations=750, initial guess is zero
tolerances: relative=1e-07, absolute=1e-50, divergence=10000
left preconditioning
using PRECONDITIONED norm type for convergence test
PC Object: 1 MPI processes
type: sor
SOR: type = local_symmetric, iterations = 1, local iterations = 1,
omega = 1
linear system matrix = precond matrix:
Matrix Object: 1 MPI processes
type: seqaij
rows=1375920, cols=1375920
total: nonzeros=17671714, allocated nonzeros=17671714
total number of mallocs used during MatSetValues calls =0
not using I-node routines
Using Petsc Development HG revision:
59ca71b85d784abbe22f12c34ffcb2ccc6dc68b0 HG Date: Tue Mar 20 01:05:13
2012 -0500
Configure options: --with-petsc-arch=openmpi-intel-complex-release-c
--with-mpi-dir=/opt/mpi/intel/openmpi-1.4.2 --with-scalar-type=complex
--with-precision=double --with-blas-lapack-dir=/usr/local/lib --with-x=0
--with-debugging=0
#######################################
And now second one:
./solveTest -ksp_view -ksp_converged_reason -ksp_monitor_true_residual
-log_summary -mat_type aij -ksp_rtol 1.0e-7 -ksp_type tfqmr -pc_type sor
-ksp_max_it 750
0 KSP preconditioned resid norm 9.760858225034e-10 true resid norm
4.108026443997e-08 ||r(i)||/||b|| 1.000000000000e+00
1 KSP preconditioned resid norm 9.497930576113e-10 true resid norm
3.591633653854e-08 ||r(i)||/||b|| 8.742966246242e-01
1 KSP preconditioned resid norm 1.341211098002e-09 true resid norm
3.754049143693e-08 ||r(i)||/||b|| 9.138327600539e-01
2 KSP preconditioned resid norm 9.481662292281e-10 true resid norm
3.709648505700e-08 ||r(i)||/||b|| 9.030244951612e-01
2 KSP preconditioned resid norm 1.340863953080e-09 true resid norm
3.730358317575e-08 ||r(i)||/||b|| 9.080657995827e-01
3 KSP preconditioned resid norm 9.481308142928e-10 true resid norm
3.725036905334e-08 ||r(i)||/||b|| 9.067704300630e-01
...
230 KSP preconditioned resid norm 8.875661094394e-17 true resid norm
1.062030983067e-14 ||r(i)||/||b|| 2.585258389996e-07
Linear solve converged due to CONVERGED_RTOL iterations 230
KSP Object: 1 MPI processes
type: tfqmr
maximum iterations=750, initial guess is zero
tolerances: relative=1e-07, absolute=1e-50, divergence=10000
left preconditioning
using PRECONDITIONED norm type for convergence test
PC Object: 1 MPI processes
type: sor
SOR: type = local_symmetric, iterations = 1, local iterations = 1,
omega = 1
linear system matrix = precond matrix:
Matrix Object: 1 MPI processes
type: seqaij
rows=1375920, cols=1375920
total: nonzeros=17671714, allocated nonzeros=17671714
total number of mallocs used during MatSetValues calls =0
not using I-node routines
Using Petsc Development HG revision:
a4dae06b4d05ef5b78a9a9aa2cbc31b2b158834f HG Date: Wed Feb 08 11:29:52
2012 -0600
Configure options: --with-petsc-arch=openmpi-intel-complex-release-f-mkl
--with-fortran-interfaces=1 --download-superlu --download-superlu_dist
--download-mumps --download-parmetis --download-ptscotch
--download-metis
--with-scalapack-lib=/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_scalapack_lp64.a
--with-scalapack-include=/opt/intel/Compiler/11.1/072/mkl/include
--with-blacs-lib=/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_blacs_openmpi_lp64.a
--with-blacs-include=/opt/intel/Compiler/11.1/072/mkl/include
--with-mpi-dir=/opt/mpi/intel/openmpi-1.4.2 --with-scalar-type=complex
--with-blas-lapack-lib="[/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_lp64.a,/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_thread.a,/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_core.a,/opt/intel/Compiler/11.1/072/lib/intel64/libiomp5.a]"
--with-precision=double --with-x=0 --with-debugging=0
Well, two version compiled with different lines, but still I don't think
this is the reason...
Where actually to look at?
Thanks.
On 22.03.2012 15:42, Jed Brown wrote:
> On Thu, Mar 22, 2012 at 04:23, Alexander Grayver
> <agrayver at gfz-potsdam.de <mailto:agrayver at gfz-potsdam.de>> wrote:
>
> I've got the following error when applying bicg+sor to my problem:
>
> mt-soft/solveTest> ./solveTest -ksp_view -ksp_converged_reason
> -ksp_monitor_true_residual -log_summary -mat_type aij -ksp_rtol
> 1.0e-7 -ksp_type bicg -pc_type sor -ksp_max_it 750
> [0]PETSC ERROR: --------------------- Error Message
> ------------------------------------
> [0]PETSC ERROR: No support for this operation for this object type!
> [0]PETSC ERROR: PC does not have apply transpose!
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: Petsc Development HG revision:
> 59ca71b85d784abbe22f12c34ffcb2ccc6dc68b0 HG Date: Tue Mar 20
> 01:05:13 2012 -0500
> [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: Configure options
> --with-petsc-arch=openmpi-intel-complex-release-c
> --with-mpi-dir=/opt/mpi/intel/openmpi-1.4.2
> --with-scalar-type=complex --with-precision=double
> --with-blas-lapack-dir=/usr/local/lib --with-x=0 --with-debugging=0
> [0]PETSC ERROR:
> ------------------------------------------------------------------------
> [0]PETSC ERROR: PCApplyTranspose() line 515 in
> /home/mt/agrayver/lib/petsc-dev/src/ksp/pc/interface/precon.c
> [0]PETSC ERROR: KSPSolve_BiCG() line 55 in
> /home/mt/agrayver/lib/petsc-dev/src/ksp/ksp/impls/bicg/bicg.c
> [0]PETSC ERROR: KSPSolve() line 434 in
> /home/mt/agrayver/lib/petsc-dev/src/ksp/ksp/interface/itfunc.c
> [0]PETSC ERROR: main() line 114 in /home/solveTest.c
>
> Any ideas?
>
>
> PCApplyTranspose_SOR is not implemented. It is unfortunately not an
> operation that is efficient to implement in-place like SOR.
--
Regards,
Alexander
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