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[],IS *is)
Collective on MPI_Comm
Input Parameters
| comm | - the MPI communicator
|
| n | - the length of the index set
|
| idx | - the list of integers
|
Output Parameter
is -the new index set
Notes
The index array is copied to internally allocated storage. After the call,
the user can free the index array. Use ISCreateGeneralNC() to use the pointers
passed in and NOT make a copy of the index array.
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
ISCreateGeneralWithArray(), ISCreateStride(), ISCreateBlock(), ISAllGather(), ISCreateGeneralNC()
Level:beginner
Location:src/vec/is/impls/general/general.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages
Examples
src/vec/is/examples/tutorials/ex1.c.html
src/vec/is/examples/tutorials/ex1f.F.html
src/vec/is/examples/tutorials/ex1f90.F.html
src/dm/da/examples/tutorials/ex6.c.html
src/dm/da/examples/tutorials/ex6f90.F.html