KSPSetMatSolveBatchSize#

Sets the maximum number of columns treated simultaneously in KSPMatSolve().

Synopsis#

#include "petscksp.h" 
#include "petscmat.h" 
PetscErrorCode KSPSetMatSolveBatchSize(KSP ksp, PetscInt bs)

Logically Collective

Input Parameters#

ksp - the KSP iterative solver
bs - batch size

Note#

Using a larger block size can improve the efficiency of the solver.

See Also#

KSP: Linear System Solvers, KSPMatSolve(), KSPGetMatSolveBatchSize(), -mat_mumps_icntl_27, -matmatmult_Bbn

Level#

advanced

Location#

src/ksp/ksp/interface/itfunc.c

Examples#

src/ksp/ksp/tutorials/ex76.c
src/ksp/ksp/tutorials/ex77.c
src/ksp/ksp/tutorials/ex77f.F90

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