For most purposes, it's easiest to read it with SciPy (or Matlab, etc.), merge, and use PetscBinaryIO to write. Then it'll be fast to access from PETSc, even in parallel.
Afrah Najib via petsc-users <petsc-users@mcs.anl.gov> writes: > Hi, > > I have a set of files generated synthetically in matrix market file formats > and I want to merge them in order to get a larger matrix. Do you know any > useful tool or library for merging MTX files? > > The same question applies for Harwell-beoing files? > > Thank you,
