slepc-3.18.0 2022-10-01
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EPSKrylovSchurSetPartitions

Sets the number of partitions for the case of doing spectrum slicing for a computational interval with the communicator split in several sub-communicators.

Synopsis

#include "slepceps.h" 
PetscErrorCode EPSKrylovSchurSetPartitions(EPS eps,PetscInt npart)
Logically Collective on eps

Input Parameters

eps  - the eigenproblem solver context
npart  - number of partitions

Options Database Key

-eps_krylovschur_partitions <npart>  - Sets the number of partitions

Notes

By default, npart=1 so all processes in the communicator participate in the processing of the whole interval. If npart>1 then the interval is divided into npart subintervals, each of them being processed by a subset of processes.

The interval is split proportionally unless the separation points are specified with EPSKrylovSchurSetSubintervals().

See Also

EPSKrylovSchurSetSubintervals(), EPSSetInterval()

Level

advanced

Location

src/eps/impls/krylov/krylovschur/krylovschur.c

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