EPSKrylovSchurGetSubcommInfo#
Gets information related to the case of doing spectrum slicing for a computational interval with multiple communicators.
Synopsis#
#include "slepceps.h"
PetscErrorCode EPSKrylovSchurGetSubcommInfo(EPS eps,PetscInt *k,PetscInt *n,Vec *v)
Collective on the subcommunicator (if v is given)
Input Parameter#
eps - the linear eigensolver context
Output Parameters#
k - index of the subinterval for the calling process
n - number of eigenvalues found in the k-th subinterval
v - a vector owned by processes in the subcommunicator with dimensions compatible for locally computed eigenvectors (or NULL)
Notes#
This function is only available for spectrum slicing runs.
The returned Vec should be destroyed by the user.
See Also#
EPS: Eigenvalue Problem Solver, EPSSetInterval(), EPSKrylovSchurSetPartitions(), EPSKrylovSchurGetSubcommPairs()
Level#
advanced
Location#
Implementations#
EPSKrylovSchurGetSubcommInfo_KrylovSchur() in src/eps/impls/krylov/krylovschur/krylovschur.c
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