MPI Group Functions

In this section

• MPI_Comm_group
  Retrieves the group that is associated with a communicator.

• MPI_Group_compare
  Compares two groups for member equality.

• MPI_Group_difference
  Creates a new group from the difference between two existing groups.

• MPI_Group_excl
  A group constructor that is used to define a new group by deleting ranks from an existing group.

• MPI_Group_free
  Frees a group.

• MPI_Group_incl
  Creates a new group that contains a subset of the processes in an existing group.

• MPI_Group_intersection
  Creates a new group from the intersection of two existing groups.

• MPI_Group_range_excl
  Creates a new group by removing processes from an existing group.

• MPI_Group_range_incl
  A group constructor that is used to define a new group by adding additional sets of ranks to an existing group.

• MPI_Group_rank
  Returns the rank of the calling process in the specified group.

• MPI_Group_size
  Retrieves the size of the specified group.

• MPI_Group_translate_ranks
  Determines the relative numbering of the same processes in two different groups.

• MPI_Group_union
  Creates a new group from the union of two existing groups.