MatSTRUMPACKSetCompMinSepSize

Set STRUMPACK https://portal.nersc.gov/project/sparse/strumpack/master minimum separator size for low-rank approximation

Synopsis

#include "petscmat.h" 
PetscErrorCode MatSTRUMPACKSetCompMinSepSize(Mat F, PetscInt min_sep_size)

Logically Collective

Input Parameters

• F - the factored matrix obtained by calling MatGetFactor() from PETSc-STRUMPACK interface

• min_sep_size - minimum dense matrix size for low-rank approximation

Options Database Key

• -mat_strumpack_compression_min_sep_size <min_sep_size> - Minimum size of dense sub-block for low-rank compression

See Also

MATSOLVERSTRUMPACK, MatGetFactor(), MatSTRUMPACKGetCompMinSepSize()

Level

intermediate

Location

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

Examples

src/ksp/ksp/tutorials/ex52.c

Implementations

MatSTRUMPACKSetCompMinSepSize_STRUMPACK() in src/mat/impls/aij/mpi/strumpack/strumpack.c

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