MatGetSubMatrix API change
The user now specifies a parallel IS for the columns. The local part of this IS corresponds to the local columns of the matrix. Note that MatPermute_MPIXAIJ calls the pr
MatGetSubMatrix API change
The user now specifies a parallel IS for the columns. The local part of this IS corresponds to the local columns of the matrix. Note that MatPermute_MPIXAIJ calls the private versions where the full index set is given. It is probably desirable for MatPermute to also use a parallel IS rather than require a gathered IS.
Ripped out MatGetSubMatrixRaw, it is not used anywhere in PETSc.
Hg-commit: 3b40e47b3df6b69dfffc2cc67b61dab74aafd570
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