havoqgt::mpi::detail Namespace Reference

Functions
template<typename Iterator >
bool	global_iterator_range_empty (Iterator itr, Iterator itr_end, MPI_Comm comm)

Function Documentation

template<typename Iterator >

bool havoqgt::mpi::detail::global_iterator_range_empty	(	Iterator	itr,
		Iterator	itr_end,
		MPI_Comm	comm
	)

Tests if all processes' iterator range is empty

Parameters

itr	begin iterator
itr_end	end iterator
comm	MPI communicator

Returns

true, if all processes have empty range, else false

Definition at line 67 of file iterator.hpp.

                                                                                {
  uint32_t my_unfinished = itr != itr_end;
  uint32_t ranks_unfinished = mpi_all_reduce(my_unfinished, 
                                             std::plus<uint32_t>(), 
                                             comm);
  return ranks_unfinished == 0;
}

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