petsc-3.5.2 2014-09-08
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ISOnComm

Split a parallel IS on subcomms (usually self) or concatenate index sets on subcomms into a parallel index set

Synopsis

#include "petscis.h" 
PetscErrorCode  ISOnComm(IS is,MPI_Comm comm,PetscCopyMode mode,IS *newis)
Collective on IS and comm

Input Arguments

is - index set
comm - communicator for new index set
mode - copy semantics, PETSC_USE_POINTER for no-copy if possible, otherwise PETSC_COPY_VALUES

Output Arguments

newis -new IS on comm

Notes

It is usually desirable to create a parallel IS and look at the local part when necessary.

This function is useful if serial ISs must be created independently, or to view many logically independent serial ISs.

The input IS must have the same type on every process.

See Also

ISSplit()

Level:advanced
Location:
src/vec/is/is/interface/index.c
Index of all IS routines
Table of Contents for all manual pages
Index of all manual pages