Distributed Memory Communication

Support functions and classes for communicating on distributed memory for the Runtime System. More...

Collaboration diagram for Distributed Memory Communication:

Classes
class	stapl::runtime::communicator
	This class assists with sending messages between processes. More...
class	stapl::runtime::mpi_communicator
	Implements a communicator based on MPI-2. More...
class	stapl::runtime::message_handle
	This class is used to keep track of the handles associated with a message. More...

Functions
unsigned int	stapl::runtime::get_processes_per_node (MPI_Comm comm)
	Returns the number of processes per node, based on how many processes are co-scheduled with process 0. More...

Detailed Description

Support functions and classes for communicating on distributed memory for the Runtime System.

Function Documentation

get_processes_per_node()

unsigned int stapl::runtime::get_processes_per_node

(

MPI_Comm

comm

)

Returns the number of processes per node, based on how many processes are co-scheduled with process 0.

This function acts also as an implicit barrier.

Warning

This function will estimate incorrectly if the machine is not used in the same way on all nodes.