slepc-3.18.1 2022-11-02
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PEPCISSSetSizes

Sets the values of various size parameters in the CISS solver.

Synopsis

#include "slepcpep.h" 
PetscErrorCode PEPCISSSetSizes(PEP pep,PetscInt ip,PetscInt bs,PetscInt ms,PetscInt npart,PetscInt bsmax,PetscBool realmats)
Logically Collective on pep

Input Parameters

pep  - the polynomial eigensolver context
ip  - number of integration points
bs  - block size
ms  - moment size
npart  - number of partitions when splitting the communicator
bsmax  - max block size
realmats  - all coefficient matrices of P(.) are real

Options Database Keys

-pep_ciss_integration_points  - Sets the number of integration points
-pep_ciss_blocksize  - Sets the block size
-pep_ciss_moments  - Sets the moment size
-pep_ciss_partitions  - Sets the number of partitions
-pep_ciss_maxblocksize  - Sets the maximum block size
-pep_ciss_realmats  - all coefficient matrices of P(.) are real

Notes

The default number of partitions is 1. This means the internal KSP object is shared among all processes of the PEP communicator. Otherwise, the communicator is split into npart communicators, so that npart KSP solves proceed simultaneously.

See Also

PEPCISSGetSizes()

Level

advanced

Location

src/pep/impls/ciss/pciss.c

Index of all PEP routines
Table of Contents for all manual pages
Index of all manual pages