MatMumpsSetBlk

Set user-specified variable block sizes to be used with -mat_mumps_icntl_15 1

Synopsis

#include "petscmat.h"  
PetscErrorCode MatMumpsSetBlk(Mat F, PetscInt nblk, const PetscInt blkvar[], const PetscInt blkptr[])

Not collective, only relevant on the first process of the MPI communicator

Input Parameters

• F - the factored matrix of A obtained by calling MatGetFactor() with a MatSolverType of MATSOLVERMUMPS and a MatFactorType of MAT_FACTOR_LU or MAT_FACTOR_CHOLESKY

• nblk - the number of blocks

• blkvar - see MUMPS documentation, blkvar(blkptr(iblk):blkptr(iblk+1)-1), (iblk=1, nblk) holds the variables associated to block iblk

• blkptr - array starting at 1 and of size nblk + 1 storing the prefix sum of all blocks

See Also

Matrices, MATSOLVERMUMPS, Mat, MatGetFactor(), MatMumpsSetIcntl(), MatSetVariableBlockSizes()

Level

advanced

Location

src/mat/impls/aij/mpi/mumps/mumps.c

Implementations

MatMumpsSetBlk_MUMPS() in src/mat/impls/aij/mpi/mumps/mumps.c

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