Hello everyone, I would like to know what is the most straightforward and easy way to handle PETSc Matrices and Vectors input/output. This is the situation: I create and assemble a PETSc matrix, then I want to export it. After that, I want to import the same matrix in an object, keeping the type, …

Consider the following: from petsc4py import PETSc from mpi4py import MPI A = PETSc.Mat().create(MPI.COMM_WORLD) A.setSizes([3, 3]) A.setFromOptions() A.setUp() A.setValuesLocal([0], [2], [3]) A.assemble() viewer = PETSc.Viewer().createBinary("A.mat", mode=PETSc.Viewer.Mode.WRITE, comm=MPI.COMM_W…

PETSc matrices and vectors I/O

I/O

dokken September 29, 2022, 6:23am 2

Consider: I/O from XDMF/HDF5 files in dolfin-x - #23 by hawkspar

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PETSc matrices and vectors I/O

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