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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