mpivars_struct.h File Reference

MPI related structure. More...

#include <mpi.h>

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Data Structures
struct	MPIVariables
	Structure of MPI-related variables. More...

Detailed Description

MPI related structure.

Author

Debojyoti Ghosh

Definition in file mpivars_struct.h.

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Data Structure Documentation

struct MPIVariables

Structure of MPI-related variables.

This structure contains all the variables needed for parallel computations using the MPI library.

Definition at line 24 of file mpivars_struct.h.

Data Fields
int	rank	Process rank
int	nproc	Total number of processes
int *	iproc	Number of processes along each dimension
int *	ip	Process rank along each dimension
int *	is	Global start index of local domain along each dimension
int *	ie	Global end index of local domain along each dimension
int *	bcperiodic	Flag for periodic BCs along any dimension
MPI_Comm	world	Communicator for all processes
MPI_Comm *	comm	Sub-communicators
int	N_IORanks	Number of IO ranks
int	IOParticipant	Whether this rank will handle file I/O
int	CommGroup	I/O group this rank is a part of
int	IORank	Rank of the process this rank will get I/O from
int	GroupStartRank	Starting rank of the IO group
int	GroupEndRank	Last rank of the IO group
MPI_Comm	IOWorld	Communicator of processes participating in file I/O
double *	sendbuf	Buffer to send data
double *	recvbuf	Buffer to receive data
int	maxbuf	Maximum buffer size
int	ncalls
double	wctime
double	wctime_total
int *	cpu_dim
double *	gpu_sendbuf
double *	gpu_recvbuf