vecaccu.cpp File Reference

#include <iostream>
#include <mpi.h>
#include "header.h"

Functions
void	VecAccu (const int nx, const int ny, double w[], const int neigh[], const int color, const MPI::Intracomm &icomm)
void	FreeVecAccu ()

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Function Documentation

void FreeVecAccu

(

)

Frees the dynamic memory allocated in the first call in VecAccu.

See also:

VecAccu

void VecAccu	(	const int	nx,
		const int	ny,
		double	w[],
		const int	neigh[],
		const int	color,
		const MPI::Intracomm &	icomm
	)

Accumulates vector w, i.e., a distributed vector is converted into an accumulated vector. Dynamic memory allocation in the first call of this function.

Parameters:

[in]	nx	number of discretization intervals in x-direction
[in]	ny	number of discretization intervals in y-direction
[in,out]	w	vector for all nodes of local discretization
[in]	neigh	vector of 4 elements containing the ranks of neighbouring processes, -1 indicates a boundary in this direction
[in]	color	red/black coloring of subdomains (0/1)
[in]	icomm	communicator