gmx::DomainCommForward Class Reference

#include <gromacs/domdec/domainpaircomm.h>

Description

Setup for receiving halo coordinates from another domain and sending halo forces.

This object is used for communicating with a domain that resides in forward direction along the domain decomposition grid. The coordinates are received in place in the coordinate vector on this rank. The forces to send are read directly from the force buffer on this rank.

Public Member Functions
	DomainCommForward (int rank, int zone, MPI_Comm mpiCommAll)
	Constructor. More...
void	setup (const DomainCommBackward &send, int offsetInCoordinateBuffer)
	Sets up the forward communication, receiving the count from a remote send. More...
int	rank () const
	Return the remote rank we communicate with.
int	zone () const
	Return the zone this domain pair resides in.
ArrayRef< const std::pair< int, int > >	columnsReceived () const
	Returns the list of pairs of column indices and cell counts that we receive.
int	numAtoms () const
	The number of atoms to receive.
Range< int >	atomRange () const
	The atom range we store received coordinates in and send forces from.
MPI_Comm	mpiCommAll () const
	The MPI communicator for halo exchange.

Constructor & Destructor Documentation

gmx::DomainCommForward::DomainCommForward	(	int	rank,
		int	zone,
		MPI_Comm	mpiCommAll
	)

Constructor.

Parameters

[in]	rank	The MPI rank we communicate with
[in]	zone	The domain decomposition zone this pair of domains belongs to
[in]	mpiCommAll	MPI communicator for all PP ranks

Member Function Documentation

void gmx::DomainCommForward::setup	(	const DomainCommBackward &	send,
		int	offsetInCoordinateBuffer
	)

Sets up the forward communication, receiving the count from a remote send.

Parameters

[in]	send	The send data we need to send foward
[in]	offsetInCoordinateBuffer	The offset in the coordinate buffer for receiving coordinates

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The documentation for this class was generated from the following files:

• src/gromacs/domdec/domainpaircomm.h
• src/gromacs/domdec/domainpaircomm.cpp