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 eigenproblem solver 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#

EPSSetInterval(), EPSKrylovSchurSetPartitions(), EPSKrylovSchurGetSubcommInfo(), EPSKrylovSchurGetSubcommMats()

Level#

advanced

Location#

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

Implementations#

EPSKrylovSchurGetSubcommPairs_KrylovSchur() in src/eps/impls/krylov/krylovschur/krylovschur.c


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