[petsc-users] Sparse matrix partitioning in PETSc

[Shri]

MatLoad() does not distribute the rows based on the number of non zeros. You'll need to first compute the number of rows on each process that gives you equal/nearly equal number of non zeros and then call MatSetSizes() followed by MatLoad(). ----- Original Message -----
> Hello,
> When I use MatLoad() to load a sparse matrix, I want each process to
> have equal number of nonzeros, instead of equal number of rows.
> How could I achieve that in PETSc?
> Thanks!
> -- Junchao Zhang
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