PEXSI

Warning

This section is deprecated and may be removed in a future version.

Support for the PEXSI library is slated for removal.

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

Keywords

Keyword descriptions

NP_SYMB_FACT

Type: integer
Default: 1
Usage: NP_SYMB_FACT

Description: 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

Type: enum
Default: SEQUENTIAL
Usage: ORDERING

Description: Ordering strategy for factorization and selected inversion.

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)

[Edit on GitHub]

ROW_ORDERING

Type: enum
Default: NOROWPERM
Usage: ROW_ORDERING

Description: row permutation strategy for factorization and selected inversion.

Valid values:

  • NOROWPERM No row permutation (NOROWPERM option in SuperLU_DIST)

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

[Edit on GitHub]

VERBOSITY

Type: enum
Default: SILENT
Usage: VERBOSITY

Description: The level of output information.

Valid values:

  • SILENT

  • BASIC

  • DETAILED

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