petsc-3.13.6 2020-09-29

ISCreateGeneral

Creates a data structure for an index set containing a list of integers.

Synopsis

#include "petscis.h"  
PetscErrorCode  ISCreateGeneral(MPI_Comm comm,PetscInt n,const PetscInt idx[],PetscCopyMode mode,IS *is)

Collective

Input Parameters

	comm	- the MPI communicator
	n	- the length of the index set
	idx	- the list of integers
	mode	- PETSC_COPY_VALUES, PETSC_OWN_POINTER, or PETSC_USE_POINTER; see PetscCopyMode for meaning of this flag.

Output Parameter

is -the new index set

Notes

When the communicator is not MPI_COMM_SELF, the operations on IS are NOT conceptually the same as MPI_Group operations. The IS are then distributed sets of indices and thus certain operations on them are collective.

Level

beginner

Location

src/vec/is/is/impls/general/general.c

Examples

src/vec/is/is/tutorials/ex1.c.html
src/vec/is/is/tutorials/ex1f.F.html
src/vec/is/is/tutorials/ex1f90.F90.html
src/dm/tutorials/ex6.c.html
src/dm/tutorials/swarm_ex3.c.html
src/dm/field/tutorials/ex1.c.html
src/ksp/ksp/tutorials/ex49.c.html
src/ksp/ksp/tutorials/ex59.c.html
src/ksp/ksp/tutorials/ex71.c.html

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