Sorry, here is the full error message [0]PETSC ERROR: Nonconforming object sizes [0]PETSC ERROR: Preconditioner number of local rows -1 does not equal resulting vector number of rows 71808 [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble shooting. [0]PETSC ERROR: Petsc Release Version 3.6.0, Jun, 09, 2015 [0]PETSC ERROR: ./mips_implicit on a arch-linux2-c-opt named helios90 by tnicolas Fri Nov 13 10:39:14 2015 [0]PETSC ERROR: Configure options --prefix=/csc/softs/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real --with-debugging=0 --with-x=0 --with-cc=mpicc --with-fc=mpif90 --with-cxx=mpicxx --with-fortran --known-mpi-shared-libraries=1 --with-scalar-type=real --with-precision=double --CFLAGS="-g -O3 -mavx -mkl" --CXXFLAGS="-g -O3 -mavx -mkl" --FFLAGS="-g -O3 -mavx -mkl" [0]PETSC ERROR: #1 PCApply() line 472 in /csc/releases/buildlog/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real/petsc-3.6.0/src/ksp/pc/interface/precon.c [0]PETSC ERROR: #2 KSP_PCApply() line 242 in /csc/releases/buildlog/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real/petsc-3.6.0/include/petsc/private/kspimpl.h [0]PETSC ERROR: #3 KSPInitialResidual() line 63 in /csc/releases/buildlog/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real/petsc-3.6.0/src/ksp/ksp/interface/itres.c [0]PETSC ERROR: #4 KSPSolve_GMRES() line 235 in /csc/releases/buildlog/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real/petsc-3.6.0/src/ksp/ksp/impls/gmres/gmres.c [0]PETSC ERROR: #5 KSPSolve() line 604 in /csc/releases/buildlog/anl/petsc-3.6.0/intel-15.0.0.090/bullxmpi-1.2.8.2/real/petsc-3.6.0/src/ksp/ksp/interface/itfunc.c
2015-11-13 10:38 GMT+09:00 Matthew Knepley <[email protected]>: > On Thu, Nov 12, 2015 at 6:47 PM, Timothée Nicolas < > [email protected]> wrote: > >> Hi all, >> >> In the manual and the documentation, the syntax for the routine to be >> given as argument of PCMGSetResidual: >> >> PCMGSetResidual >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/PC/PCMGSetResidual.html#PCMGSetResidual>(PC >> pc,PetscInt >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Sys/PetscInt.html#PetscInt> >> l,PetscErrorCode >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Sys/PetscErrorCode.html#PetscErrorCode> >> (*residual)(Mat >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Mat/Mat.html#Mat>,Vec >> >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Vec/Vec.html#Vec>,Vec >> >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Vec/Vec.html#Vec>,Vec >> >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Vec/Vec.html#Vec>),Mat >> <http://www.mcs.anl.gov/petsc/petsc-3.6/docs/manualpages/Mat/Mat.html#Mat> >> mat) >> >> >> is not specified. I mean that the order of the vectors is not specified. >> I suppose it is something like >> residual(Mat,b,x,r) with r = b - Mat*x, but it could as well be any >> combination like residual(Mat,r,x,b). There is no example in the >> documentation of the usage so I am confused. Does it absolutely need to be >> set ? I find the manual a bit confusing on this point. Is it only if >> matrix-free matrices are used ? >> >> In the present situation, I use matrix-free operators in a multigrid >> preconditioner (but the interpolation and restriction are not matrix free) >> and have not set this residual function yet. I get the following error: >> > > Always always always give the entire error message. We want the stack. > > The problem here looks like the preconditioner is reporting -1 rows for > process 13. > > Matt > > >> [13]PETSC ERROR: Preconditioner number of local rows -1 does not equal >> resulting vector number of rows 67584 >> >> Could this be related ? By the way, I don't understand what is meant by >> the "preconditioner number of local rows". I have separately tested the >> operators at each level and they are fine. >> >> Best >> >> Timothee >> > > > > -- > 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 >
