slepc-3.20.1 2023-11-27
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PEPCISSSetExtraction

Sets the extraction technique used in the CISS solver.

Synopsis

#include "slepcpep.h" 
PetscErrorCode PEPCISSSetExtraction(PEP pep,PEPCISSExtraction extraction)
Logically Collective

Input Parameters

pep  - the polynomial eigensolver context
extraction  - the extraction technique

Options Database Key

-pep_ciss_extraction  - Sets the extraction technique (either 'ritz', 'hankel' or 'caa')

Notes

By default, the Rayleigh-Ritz extraction is used (PEP_CISS_EXTRACTION_RITZ).

If the 'hankel' or the 'caa' option is specified (PEP_CISS_EXTRACTION_HANKEL or PEP_CISS_EXTRACTION_CAA), then the Block Hankel method, or the Communication-avoiding Arnoldi method, respectively, is used for extracting eigenpairs.

See Also

PEPCISSGetExtraction(), PEPCISSExtraction

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