EPSKrylovSchurGetSubcommPairs#
Gets the i-th eigenpair stored internally in the subcommunicator to which the calling process belongs.
Synopsis#
#include "slepceps.h"
PetscErrorCode EPSKrylovSchurGetSubcommPairs(EPS eps,PetscInt i,PetscScalar *eig,Vec v)
Collective on the subcommunicator (if v is given)
Input Parameters#
eps - the linear eigensolver context
i - index of the solution
Output Parameters#
eig - the eigenvalue
v - the eigenvector
Notes#
It is allowed to pass NULL for v if the eigenvector is not required. Otherwise, the caller must provide a valid Vec objects, i.e., it must be created by the calling program with EPSKrylovSchurGetSubcommInfo().
The index i should be a value between 0 and n-1, where n is the number of vectors in the local subinterval, see EPSKrylovSchurGetSubcommInfo().
See Also#
EPS: Eigenvalue Problem Solver, EPSSetInterval(), EPSKrylovSchurSetPartitions(), EPSKrylovSchurGetSubcommInfo(), EPSKrylovSchurGetSubcommMats()
Level#
advanced
Location#
Implementations#
EPSKrylovSchurGetSubcommPairs_KrylovSchur() in src/eps/impls/krylov/krylovschur/krylovschur.c
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