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.
See Also#
ISCreateStride()
, ISCreateBlock()
, ISAllGather()
, PETSC_COPY_VALUES
, PETSC_OWN_POINTER
, PETSC_USE_POINTER
, PetscCopyMode
Level#
beginner
Location#
Examples#
src/vec/is/is/tutorials/ex1.c.html
src/vec/is/is/tutorials/ex1f90.F90.html
src/vec/is/is/tutorials/ex1f.F90.html
src/dm/tutorials/ex22.c.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