When I attempt to read the "np_2" data into Matlab (the reading process doesn't use any PETSc code) I get the same failure. It does look like the file is corrupted.
Barry > On Jun 6, 2024, at 8:52 AM, Klaij, Christiaan <c.kl...@marin.nl> wrote: > > This Message Is From an External Sender > This message came from outside your organization. > 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? > > $ 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 > > > <image337700.png> > 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> | > https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!a1xtGgs31Xt_6pJ-UUpqz9O6jfNb7GDOBoRRBZiCsTwsrgfsArGejlWuyqulRp-L3Q1cvQfBgn2XWeWbC9vB554$ > > <https://urldefense.us/v3/__https://www.marin.nl/__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWBYeP9zg$> > <image563921.png> > <https://urldefense.us/v3/__https://www.facebook.com/marin.wageningen__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWzqK6wKw$> > > <image268336.png> > <https://urldefense.us/v3/__https://www.linkedin.com/company/marin__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWIUyfXbM$> > > <image799923.png> > <https://urldefense.us/v3/__https://www.youtube.com/marinmultimedia__;!!G_uCfscf7eWS!YrcVeQ6V8OD3jKxSzzxpyuTgFdncWh4YcL1SgDT8NHqystMpzO1pkd17oNGni-ll5I8qH9_ueOtj3WYWjtUkoeg$><a_mat_np_1.dat><a_mat_np_1.dat.info><a_mat_np_2.dat><a_mat_np_2.dat.info>
