MatSTRUMPACKSetCompButterflyLevels

Set STRUMPACK https://portal.nersc.gov/project/sparse/strumpack/master number of butterfly levels in HODLR compression (requires ButterflyPACK support)

Synopsis

#include "petscmat.h" 
PetscErrorCode MatSTRUMPACKSetCompButterflyLevels(Mat F, PetscInt bfly_lvls)

Logically Collective

Input Parameters

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

• bfly_lvls - Number of levels of butterfly compression in HODLR compression

Options Database Key

• -mat_strumpack_compression_butterfly_levels <bfly_lvls> - Number of levels in the hierarchically off-diagonal matrix for which to use butterfly, when using -pctype ilu, (BLR_)HODLR compression

See Also

MATSOLVERSTRUMPACK, MatGetFactor(), MatSTRUMPACKGetCompButterflyLevels()

Level

intermediate

Location

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

Implementations

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

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