Try without this line CALL PetscViewerPushFormat(viewer, PETSC_VIEWER_DEFAULT, ier) it shouldn't matter but worth trying.
> On Jun 6, 2024, at 9:50 AM, Klaij, Christiaan <c.kl...@marin.nl> wrote: > > This Message Is From an External Sender > This message came from outside your organization. > The matrix was saved as with this code: > > CALL PetscViewerBinaryOpen(PETSC_COMM_WORLD, filename, FILE_MODE_WRITE, > viewer, ier) > CALL PetscViewerPushFormat(viewer, PETSC_VIEWER_DEFAULT, ier) > CALL MatView(A, viewer, ier) > CALL PetscViewerDestroy(viewer, ier) > > I will try again to check for file corruption > > ________________________________________ > From: Stefano Zampini <stefano.zamp...@gmail.com > <mailto:stefano.zamp...@gmail.com>> > Sent: Thursday, June 6, 2024 3:01 PM > To: Klaij, Christiaan > Cc: PETSc users list > Subject: Re: [petsc-users] matload and petsc4py > > You don't often get email from stefano.zamp...@gmail.com > <mailto:stefano.zamp...@gmail.com>. Learn why this is > important<https://urldefense.us/v3/__https://aka.ms/LearnAboutSenderIdentification__;!!G_uCfscf7eWS!dhd_vSPt_mzy9yVfgQZvw3KcZQwq--Wojmk9JdzuGmnjbC_54Z7IF0WH6qosvtdRyyjv94blDuN1lAlZepr0msg$> > > > On Thu, Jun 6, 2024, 14:53 Klaij, Christiaan <c.kl...@marin.nl > <mailto:c.kl...@marin.nl><mailto:c.kl...@marin.nl>> wrote: > I'm writing a matrix to file from my fortran code (that uses petsc-3. 19. 4) > with -mat_view binary. Then, I'm trying to load this mat into python (that > uses petsc-3. 21. 0). This works fine using single or multiple procs when the > marix > ZjQcmQRYFpfptBannerStart > This Message Is From an External Sender > This message came from outside your organization. > > ZjQcmQRYFpfptBannerEnd > I'm writing a matrix to file from my fortran code (that uses petsc-3.19.4) > with -mat_view binary. Then, I'm trying to load this mat into python (that > uses petsc-3.21.0). This works fine using single or multiple procs when the > marix was written using a single proc (attached file a_mat_np_1.dat). > However, when the matrix was written using mulitple procs (attached file > a_mat_n_2.dat) I get the error below. Is this supposed to work? If so, what > I'm I doing wrong? > > > This should work. And your script seems ok too . How did you save the matrix > in parallel? I suspect that file is corrupt > > $ cat test_matrixImport_binary.py > import sys > import petsc4py > from petsc4py import PETSc > from mpi4py import MPI > > # mat files > #filename = "./a_mat_np_1.dat" # Works > filename = "./a_mat_np_2.dat" # Doesn't work > > # Initialize PETSc > petsc4py.init(sys.argv) > > # Create a viewer for reading the binary file > viewer = PETSc.Viewer().createBinary(filename, mode='r', > comm=PETSc.COMM_WORLD) > > # Create a matrix and load data from the binary file > A = PETSc.Mat().create(comm=PETSc.COMM_WORLD) > A.load(viewer) > > $ python test_matrixImport_binary.py > Traceback (most recent call last): > File "/projects/P35662.700/test_cklaij/test_matrixImport_binary.py", line 18, > in <module> > A.load(viewer) > File "petsc4py/PETSc/Mat.pyx", line 2025, in petsc4py.PETSc.Mat.load > petsc4py.PETSc.Error: error code 79 > [0] MatLoad() at /home/cklaij/petsc-3.21.0/src/mat/interface/matrix.c:1344 > [0] MatLoad_SeqAIJ() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/seq/aij.c:5091 > [0] MatLoad_SeqAIJ_Binary() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/seq/aij.c:5142 > [0] Unexpected data in file > [0] Inconsistent matrix data in file: nonzeros = 460, sum-row-lengths = 761 > > $ mpirun -n 2 python test_matrixImport_binary.py > Traceback (most recent call last): > File "/projects/P35662.700/test_cklaij/test_matrixImport_binary.py", line 18, > in <module> > Traceback (most recent call last): > File "/projects/P35662.700/test_cklaij/test_matrixImport_binary.py", line 18, > in <module> > A.load(viewer) > File "petsc4py/PETSc/Mat.pyx", line 2025, in petsc4py.PETSc.Mat.load > A.load(viewer) > File "petsc4py/PETSc/Mat.pyx", line 2025, in petsc4py.PETSc.Mat.load > petsc4py.PETSc.Error: error code 79 > [0] MatLoad() at /home/cklaij/petsc-3.21.0/src/mat/interface/matrix.c:1344 > [0] MatLoad_MPIAIJ() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/mpi/mpiaij.c:3035 > [0] MatLoad_MPIAIJ_Binary() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/mpi/mpiaij.c:3087 > [0] Unexpected data in file > [0] Inconsistent matrix data in file: nonzeros = 460, sum-row-lengths = 761 > petsc4py.PETSc.Error: error code 79 > [1] MatLoad() at /home/cklaij/petsc-3.21.0/src/mat/interface/matrix.c:1344 > [1] MatLoad_MPIAIJ() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/mpi/mpiaij.c:3035 > [1] MatLoad_MPIAIJ_Binary() at > /home/cklaij/petsc-3.21.0/src/mat/impls/aij/mpi/mpiaij.c:3087 > [1] Unexpected data in file > [1] Inconsistent matrix data in file: nonzeros = 460, sum-row-lengths = 761 > > > [cid:ii_18feda229ee74859a161] > dr. ir. Christiaan Klaij > | Senior Researcher | Research & Development > T +31 317 49 33 44<tel:+31%20317%2049%2033%2044> | > c.kl...@marin.nl <mailto:c.kl...@marin.nl><mailto:c.kl...@marin.nl> | > https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!dhd_vSPt_mzy9yVfgQZvw3KcZQwq--Wojmk9JdzuGmnjbC_54Z7IF0WH6qosvtdRyyjv94blDuN1lAlZod9brMU$<https://urldefense.us/v3/__https://www.marin.nl/__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWBYeP9zg$> > [Facebook]<https://urldefense.us/v3/__https://www.facebook.com/marin.wageningen__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWzqK6wKw$> > [LinkedIn]<https://urldefense.us/v3/__https://www.linkedin.com/company/marin__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWIUyfXbM$> > [YouTube]<https://urldefense.us/v3/__https://www.youtube.com/marinmultimedia__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWjtUkoeg$> > <image337700.png><image563921.png><image268336.png><image799923.png>
