slepc-3.21.1 2024-04-26
Report Typos and Errors


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


#include "slepceps.h" 
PetscErrorCode EPSCISSSetSizes(EPS eps,PetscInt ip,PetscInt bs,PetscInt ms,PetscInt npart,PetscInt bsmax,PetscBool realmats)
Logically Collective

Input Parameters

eps  - the eigenproblem solver 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  - A and B are real

Options Database Keys

-eps_ciss_integration_points  - Sets the number of integration points
-eps_ciss_blocksize  - Sets the block size
-eps_ciss_moments  - Sets the moment size
-eps_ciss_partitions  - Sets the number of partitions
-eps_ciss_maxblocksize  - Sets the maximum block size
-eps_ciss_realmats  - A and B are real


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

See Also






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