# MPI_Comm

the basic object used by MPI to determine which processes are involved in a communication

Note: This manual page is a place-holder because MPICH does not have a manual page for MPI_Comm

### See Also

size, rank, comm, PETSC_COMM_WORLD, PETSC_COMM_SELF

Level:beginner
Location: include/petsc.h
Index of all Sys routines
Table of Contents for all manual pages
Index of all manual pages

### Examples

src/dm/da/examples/tutorials/ex6f90.F.html