PEXSI

Parameters for the PEXSI solver to be used within OMEN. [Edit on GitHub]

Keywords

Keyword descriptions

NP_SYMB_FACT: integer = 1

Usage: NP_SYMB_FACT

Number of processors for PARMETIS/PT-SCOTCH. Only used if ORDERING is set to PARALLEL. If 0, the number of processors for PARMETIS/PT-SCOTCH will be set equal to the number of MPI ranks per pole. Note: if more than one processor is used, a segmentation fault may occur in the symbolic factorization phase. [Edit on GitHub]

ORDERING: enum = SEQUENTIAL

Usage: ORDERING

Valid values:

  • PARALLEL Parallel ordering using ParMETIS/PT-SCOTCH (PARMETIS option in SuperLU_DIST)

  • SEQUENTIAL Sequential ordering using METIS (METIS_AT_PLUS_A option in SuperLU_DIST)

  • MULTIPLE_MINIMUM_DEGREE Multiple minimum degree ordering (MMD_AT_PLUS_A option in SuperLU_DIST)

Ordering strategy for factorization and selected inversion. [Edit on GitHub]

ROW_ORDERING: enum = NOROWPERM

Usage: ROW_ORDERING

Valid values:

  • NOROWPERM No row permutation (NOROWPERM option in SuperLU_DIST)

  • LARGEDIAG Make diagonal entry larger than off diagonal (LargeDiag option in SuperLU_DIST)

row permutation strategy for factorization and selected inversion. [Edit on GitHub]

VERBOSITY: enum = SILENT

Usage: VERBOSITY

Valid values:

  • SILENT

  • BASIC

  • DETAILED

The level of output information. [Edit on GitHub]