Barry, thanks for your insight, This standalone script must be translated into a much bigger model, which uses AIJ matrices to define the laplacian in the form of the 3 usual arrays, the ascii files in the script take the place of the arrays which are passed to the solving routine in the model.
So, can i use the approach you mention to create the MPIAIJ from the petsc binary file ? would this be a better solution than reading the three arrays directly? In the model, even the smallest matrix is 10^5x10^5 elements Thanks. On Tue, Sep 27, 2016 at 12:53 PM, Barry Smith <[email protected]> wrote: > > Are you loading a matrix from an ASCII file? If so don't do that. You > should write a simple sequential PETSc program that reads in the ASCII file > and saves the matrix as a PETSc binary file with MatView(). Then write your > parallel code that reads in the binary file with MatLoad() and solves the > system. You can read in the right hand side from ASCII and save it in the > binary file also. Trying to read an ASCII file in parallel and set it into > a PETSc parallel matrix is just a totally thankless task that is > unnecessary. > > Barry > > > On Sep 26, 2016, at 6:40 PM, Manuel Valera <[email protected]> > wrote: > > > > Ok, last output was from simulated multicores, in an actual cluster the > errors are of the kind: > > > > [valera@cinci CSRMatrix]$ petsc -n 2 ./solvelinearmgPETSc > > TrivSoln loaded, size: 4 / 4 > > TrivSoln loaded, size: 4 / 4 > > RHS loaded, size: 4 / 4 > > RHS loaded, size: 4 / 4 > > [0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [0]PETSC ERROR: Argument out of range > > [0]PETSC ERROR: Comm must be of size 1 > > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [0]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [0]PETSC ERROR: [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [1]PETSC ERROR: Argument out of range > > [1]PETSC ERROR: Comm must be of size 1 > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [1]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [1]PETSC ERROR: #1 MatCreate_SeqAIJ() line 3958 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [1]PETSC ERROR: #2 MatSetType() line 94 in /home/valera/petsc-3.7.2/src/ > mat/interface/matreg.c > > [1]PETSC ERROR: #3 MatCreateSeqAIJWithArrays() line 4300 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > local size: 2 > > local size: 2 > > Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran > --download-fblaslapack=1 --download-mpich > > [0]PETSC ERROR: #1 MatCreate_SeqAIJ() line 3958 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [0]PETSC ERROR: #2 MatSetType() line 94 in /home/valera/petsc-3.7.2/src/ > mat/interface/matreg.c > > [0]PETSC ERROR: #3 MatCreateSeqAIJWithArrays() line 4300 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [1]PETSC ERROR: [0]PETSC ERROR: Nonconforming object sizes > > [0]PETSC ERROR: Sum of local lengths 8 does not equal global length 4, > my local length 4 > > likely a call to VecSetSizes() or MatSetSizes() is wrong. > > See http://www.mcs.anl.gov/petsc/documentation/faq.html#split > > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > Nonconforming object sizes > > [1]PETSC ERROR: Sum of local lengths 8 does not equal global length 4, > my local length 4 > > likely a call to VecSetSizes() or MatSetSizes() is wrong. > > See http://www.mcs.anl.gov/petsc/documentation/faq.html#split > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [0]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [1]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [0]PETSC ERROR: #4 PetscSplitOwnership() line 93 in > /home/valera/petsc-3.7.2/src/sys/utils/psplit.c > > [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [1]PETSC ERROR: #4 PetscSplitOwnership() line 93 in > /home/valera/petsc-3.7.2/src/sys/utils/psplit.c > > [0]PETSC ERROR: #5 PetscLayoutSetUp() line 143 in > /home/valera/petsc-3.7.2/src/vec/is/utils/pmap.c > > [0]PETSC ERROR: #6 MatMPIAIJSetPreallocation_MPIAIJ() line 2768 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [1]PETSC ERROR: #5 PetscLayoutSetUp() line 143 in > /home/valera/petsc-3.7.2/src/vec/is/utils/pmap.c > > [1]PETSC ERROR: [0]PETSC ERROR: #7 MatMPIAIJSetPreallocation() line 3505 > in /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > #6 MatMPIAIJSetPreallocation_MPIAIJ() line 2768 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [1]PETSC ERROR: [0]PETSC ERROR: #8 MatSetUp_MPIAIJ() line 2153 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > #7 MatMPIAIJSetPreallocation() line 3505 in /home/valera/petsc-3.7.2/src/ > mat/impls/aij/mpi/mpiaij.c > > [1]PETSC ERROR: #8 MatSetUp_MPIAIJ() line 2153 in > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [0]PETSC ERROR: #9 MatSetUp() line 739 in /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [1]PETSC ERROR: #9 MatSetUp() line 739 in /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [0]PETSC ERROR: Object is in wrong state > > [0]PETSC ERROR: Must call MatXXXSetPreallocation() or MatSetUp() on > argument 1 "mat" before MatSetNearNullSpace() > > [0]PETSC ERROR: [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [0]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > Object is in wrong state > > [1]PETSC ERROR: Must call MatXXXSetPreallocation() or MatSetUp() on > argument 1 "mat" before MatSetNearNullSpace() > > [1]PETSC ERROR: [0]PETSC ERROR: Configure options --with-cc=gcc > --with-cxx=g++ --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [0]PETSC ERROR: #10 MatSetNearNullSpace() line 8195 in > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > See http://www.mcs.anl.gov/petsc/documentation/faq.html for trouble > shooting. > > [1]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [1]PETSC ERROR: #10 MatSetNearNullSpace() line 8195 in > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [0]PETSC ERROR: Object is in wrong state > > [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [0]PETSC ERROR: Must call MatXXXSetPreallocation() or MatSetUp() on > argument 1 "mat" before MatAssemblyBegin() > > [0]PETSC ERROR: [1]PETSC ERROR: Object is in wrong state > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [0]PETSC ERROR: Must call MatXXXSetPreallocation() or MatSetUp() on > argument 1 "mat" before MatAssemblyBegin() > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [1]PETSC ERROR: #11 MatAssemblyBegin() line 5093 in > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > Configure options --with-cc=gcc --with-cxx=g++ --with-fc=gfortran > --download-fblaslapack=1 --download-mpich > > [1]PETSC ERROR: #11 MatAssemblyBegin() line 5093 in > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [0]PETSC ERROR: ------------------------------ > ------------------------------------------ > > [0]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, > probably memory access out of range > > [1]PETSC ERROR: ------------------------------ > ------------------------------------------ > > [1]PETSC ERROR: Caught signal number 11 SEGV: Segmentation Violation, > probably memory access out of range > > [1]PETSC ERROR: [0]PETSC ERROR: Try option -start_in_debugger or > -on_error_attach_debugger > > [0]PETSC ERROR: or see http://www.mcs.anl.gov/petsc/ > documentation/faq.html#valgrind > > [0]PETSC ERROR: Try option -start_in_debugger or > -on_error_attach_debugger > > [1]PETSC ERROR: or see http://www.mcs.anl.gov/petsc/ > documentation/faq.html#valgrind > > [1]PETSC ERROR: or try http://valgrind.org on GNU/linux and Apple Mac > OS X to find memory corruption errors > > or try http://valgrind.org on GNU/linux and Apple Mac OS X to find > memory corruption errors > > [0]PETSC ERROR: likely location of problem given in stack below > > [0]PETSC ERROR: --------------------- Stack Frames > ------------------------------------ > > [1]PETSC ERROR: likely location of problem given in stack below > > [1]PETSC ERROR: --------------------- Stack Frames > ------------------------------------ > > [0]PETSC ERROR: Note: The EXACT line numbers in the stack are not > available, > > [0]PETSC ERROR: INSTEAD the line number of the start of the > function > > [0]PETSC ERROR: [1]PETSC ERROR: Note: The EXACT line numbers in the > stack are not available, > > [1]PETSC ERROR: INSTEAD the line number of the start of the > function > > is given. > > [0]PETSC ERROR: [0] MatAssemblyEnd line 5185 > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [0]PETSC ERROR: [1]PETSC ERROR: is given. > > [1]PETSC ERROR: [1] MatAssemblyEnd line 5185 > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [0] MatAssemblyBegin line 5090 /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [0]PETSC ERROR: [0] MatSetNearNullSpace line 8191 > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [0]PETSC ERROR: [1]PETSC ERROR: [1] MatAssemblyBegin line 5090 > /home/valera/petsc-3.7.2/src/mat/interface/matrix.c > > [1]PETSC ERROR: [0] PetscSplitOwnership line 80 > /home/valera/petsc-3.7.2/src/sys/utils/psplit.c > > [0]PETSC ERROR: [0] PetscLayoutSetUp line 129 > /home/valera/petsc-3.7.2/src/vec/is/utils/pmap.c > > [0]PETSC ERROR: [0] MatMPIAIJSetPreallocation_MPIAIJ line 2767 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [1] MatSetNearNullSpace line 8191 /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [1]PETSC ERROR: [1] PetscSplitOwnership line 80 > /home/valera/petsc-3.7.2/src/sys/utils/psplit.c > > [1]PETSC ERROR: [0]PETSC ERROR: [0] MatMPIAIJSetPreallocation line 3502 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [0]PETSC ERROR: [0] MatSetUp_MPIAIJ line 2152 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [1] PetscLayoutSetUp line 129 /home/valera/petsc-3.7.2/src/ > vec/is/utils/pmap.c > > [1]PETSC ERROR: [1] MatMPIAIJSetPreallocation_MPIAIJ line 2767 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [0]PETSC ERROR: [0] MatSetUp line 727 /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [0]PETSC ERROR: [0] MatCreate_SeqAIJ line 3956 > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [1]PETSC ERROR: [1] MatMPIAIJSetPreallocation line 3502 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [1]PETSC ERROR: [1] MatSetUp_MPIAIJ line 2152 > /home/valera/petsc-3.7.2/src/mat/impls/aij/mpi/mpiaij.c > > [0]PETSC ERROR: [0] MatSetType line 44 /home/valera/petsc-3.7.2/src/ > mat/interface/matreg.c > > [0]PETSC ERROR: [0] MatCreateSeqAIJWithArrays line 4295 > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [1]PETSC ERROR: [1] MatSetUp line 727 /home/valera/petsc-3.7.2/src/ > mat/interface/matrix.c > > [1]PETSC ERROR: [1] MatCreate_SeqAIJ line 3956 > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [0]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [0]PETSC ERROR: Signal received > > [1]PETSC ERROR: [1] MatSetType line 44 /home/valera/petsc-3.7.2/src/ > mat/interface/matreg.c > > [1]PETSC ERROR: [1] MatCreateSeqAIJWithArrays line 4295 > /home/valera/petsc-3.7.2/src/mat/impls/aij/seq/aij.c > > [0]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [0]PETSC ERROR: Petsc Release Version 3.7.2, Jun, 05, 2016 > > [0]PETSC ERROR: [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [0]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [0]PETSC ERROR: Signal received > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/documentation/faq.html > for trouble shooting. > > [1]PETSC ERROR: #12 User provided function() line 0 in unknown file > > Petsc Release Version 3.7.2, Jun, 05, 2016 > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > P on a arch-linux2-c-debug > named cinci by valera Mon Sep 26 16:39:02 2016 > > [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich > > [1]PETSC ERROR: #12 User provided function() line 0 in unknown file > > application called MPI_Abort(comm=0x84000004, 59) - process 0 > > [cli_0]: aborting job: > > application called MPI_Abort(comm=0x84000004, 59) - process 0 > > application called MPI_Abort(comm=0x84000002, 59) - process 1 > > [cli_1]: aborting job: > > application called MPI_Abort(comm=0x84000002, 59) - process 1 > > > > ============================================================ > ======================= > > = BAD TERMINATION OF ONE OF YOUR APPLICATION PROCESSES > > = PID 10266 RUNNING AT cinci > > = EXIT CODE: 59 > > = CLEANING UP REMAINING PROCESSES > > = YOU CAN IGNORE THE BELOW CLEANUP MESSAGES > > ============================================================ > ======================= > > > > > > On Mon, Sep 26, 2016 at 3:51 PM, Manuel Valera <[email protected]> > wrote: > > Ok, i created a tiny testcase just for this, > > > > The output from n# calls are as follows: > > > > n1: > > Mat Object: 1 MPI processes > > type: mpiaij > > row 0: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 1: (0, 2.) (1, 1.) (2, 3.) (3, 4.) > > row 2: (0, 4.) (1, 3.) (2, 1.) (3, 2.) > > row 3: (0, 3.) (1, 4.) (2, 2.) (3, 1.) > > > > n2: > > Mat Object: 2 MPI processes > > type: mpiaij > > row 0: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 1: (0, 2.) (1, 1.) (2, 3.) (3, 4.) > > row 2: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 3: (0, 2.) (1, 1.) (2, 3.) (3, 4.) > > > > n4: > > Mat Object: 4 MPI processes > > type: mpiaij > > row 0: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 1: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 2: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > row 3: (0, 1.) (1, 2.) (2, 4.) (3, 3.) > > > > > > > > It really gets messed, no idea what's happening. > > > > > > > > > > On Mon, Sep 26, 2016 at 3:12 PM, Barry Smith <[email protected]> wrote: > > > > > On Sep 26, 2016, at 5:07 PM, Manuel Valera <[email protected]> > wrote: > > > > > > Ok i was using a big matrix before, from a smaller testcase i got the > output and effectively, it looks like is not well read at all, results are > attached for DRAW viewer, output is too big to use STDOUT even in the small > testcase. n# is the number of processors requested. > > > > You need to construct a very small test case so you can determine why > the values do not end up where you expect them. There is no way around it. > > > > > > is there a way to create the matrix in one node and the distribute it > as needed on the rest ? maybe that would work. > > > > No the is not scalable. You become limited by the memory of the one > node. > > > > > > > > Thanks > > > > > > On Mon, Sep 26, 2016 at 2:40 PM, Barry Smith <[email protected]> > wrote: > > > > > > How large is the matrix? It will take a very long time if the > matrix is large. Debug with a very small matrix. > > > > > > Barry > > > > > > > On Sep 26, 2016, at 4:34 PM, Manuel Valera <[email protected]> > wrote: > > > > > > > > Indeed there is something wrong with that call, it hangs out > indefinitely showing only: > > > > > > > > Mat Object: 1 MPI processes > > > > type: mpiaij > > > > > > > > It draws my attention that this program works for 1 processor but > not more, but it doesnt show anything for that viewer in either case. > > > > > > > > Thanks for the insight on the redundant calls, this is not very > clear on documentation, which calls are included in others. > > > > > > > > > > > > > > > > On Mon, Sep 26, 2016 at 2:02 PM, Barry Smith <[email protected]> > wrote: > > > > > > > > The call to MatCreateMPIAIJWithArrays() is likely interpreting > the values you pass in different than you expect. > > > > > > > > Put a call to MatView(Ap,PETSC_VIEWER_STDOUT_WORLD,ierr) after > the MatCreateMPIAIJWithArray() to see what PETSc thinks the matrix is. > > > > > > > > > > > > > On Sep 26, 2016, at 3:42 PM, Manuel Valera <[email protected]> > wrote: > > > > > > > > > > Hello, > > > > > > > > > > I'm working on solve a linear system in parallel, following ex12 > of the ksp tutorial i don't see major complication on doing so, so for a > working linear system solver with PCJACOBI and KSPGCR i did only the > following changes: > > > > > > > > > > call MatCreate(PETSC_COMM_WORLD,Ap,ierr) > > > > > ! call MatSetType(Ap,MATSEQAIJ,ierr) > > > > > call MatSetType(Ap,MATMPIAIJ,ierr) !paralellization > > > > > > > > > > call MatSetSizes(Ap,PETSC_DECIDE,PETSC_DECIDE,nbdp,nbdp,ierr); > > > > > > > > > > ! call MatSeqAIJSetPreallocationCSR(Ap,iapi,japi,app,ierr) > > > > > call MatSetFromOptions(Ap,ierr) > > > > > > > > Note that none of the lines above are needed (or do anything) > because the MatCreateMPIAIJWithArrays() creates the matrix from scratch > itself. > > > > > > > > Barry > > > > > > > > > ! call MatCreateSeqAIJWithArrays(PETSC_COMM_WORLD,nbdp,nbdp, > iapi,japi,app,Ap,ierr) > > > > > call MatCreateMPIAIJWithArrays(PETSC_COMM_WORLD,floor(real( > nbdp)/sizel),PETSC_DECIDE,nbdp,nbdp,iapi,japi,app,Ap,ierr) > > > > > > > > > > > > > > > I grayed out the changes from sequential implementation. > > > > > > > > > > So, it does not complain at runtime until it reaches KSPSolve(), > with the following error: > > > > > > > > > > > > > > > [1]PETSC ERROR: --------------------- Error Message > -------------------------------------------------------------- > > > > > [1]PETSC ERROR: Object is in wrong state > > > > > [1]PETSC ERROR: Matrix is missing diagonal entry 0 > > > > > [1]PETSC ERROR: See http://www.mcs.anl.gov/petsc/ > documentation/faq.html for trouble shooting. > > > > > [1]PETSC ERROR: Petsc Release Version 3.7.3, unknown > > > > > [1]PETSC ERROR: ./solvelinearmgPETSc > > > � � on a > arch-linux2-c-debug named valera-HP-xw4600-Workstation by valera Mon Sep 26 > 13:35:15 2016 > > > > > [1]PETSC ERROR: Configure options --with-cc=gcc --with-cxx=g++ > --with-fc=gfortran --download-fblaslapack=1 --download-mpich=1 > --download-ml=1 > > > > > [1]PETSC ERROR: #1 MatILUFactorSymbolic_SeqAIJ() line 1733 in > /home/valera/v5PETSc/petsc/petsc/src/mat/impls/aij/seq/aijfact.c > > > > > [1]PETSC ERROR: #2 MatILUFactorSymbolic() line 6579 in > /home/valera/v5PETSc/petsc/petsc/src/mat/interface/matrix.c > > > > > [1]PETSC ERROR: #3 PCSetUp_ILU() line 212 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/pc/impls/factor/ilu/ilu.c > > > > > [1]PETSC ERROR: #4 PCSetUp() line 968 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/pc/interface/precon.c > > > > > [1]PETSC ERROR: #5 KSPSetUp() line 390 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/ksp/interface/itfunc.c > > > > > [1]PETSC ERROR: #6 PCSetUpOnBlocks_BJacobi_Singleblock() line 650 > in /home/valera/v5PETSc/petsc/petsc/src/ksp/pc/impls/bjacobi/bjacobi.c > > > > > [1]PETSC ERROR: #7 PCSetUpOnBlocks() line 1001 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/pc/interface/precon.c > > > > > [1]PETSC ERROR: #8 KSPSetUpOnBlocks() line 220 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/ksp/interface/itfunc.c > > > > > [1]PETSC ERROR: #9 KSPSolve() line 600 in > /home/valera/v5PETSc/petsc/petsc/src/ksp/ksp/interface/itfunc.c > > > > > At line 333 of file solvelinearmgPETSc.f90 > > > > > Fortran runtime error: Array bound mismatch for dimension 1 of > array 'sol' (213120/106560) > > > > > > > > > > > > > > > This code works for -n 1 cores, but it gives this error when using > more than one core. > > > > > > > > > > What am i missing? > > > > > > > > > > Regards, > > > > > > > > > > Manuel. > > > > > > > > > > <solvelinearmgPETSc.f90> > > > > > > > > > > > > > > > > > <n4.png><n2.png><n1.png> > > > > > > > > <rhss.txt><solvelinearmgPETSc.f90><as.txt><ias.txt><jas.txt> > >
