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lammps/lib/atc/MPI_Wrappers.h
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MPI_Wrappers.h
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#ifndef MPI_WRAPPERS_H
#define MPI_WRAPPERS_H
#include <iostream>
#include <string>
#include "mpi.h"
namespace MPI_Wrappers {
typedef struct {double val; int rank; } DOUBLE_RANK;
int rank(MPI_Comm comm);
bool rank_zero(MPI_Comm comm);
int size(MPI_Comm comm);
bool serial(MPI_Comm comm);
void broadcast(MPI_Comm comm, double *buf, int count = 1);
void int_broadcast(MPI_Comm comm, int *buf, int count = 1);
void allsum(MPI_Comm comm, void *send_buf, double *rec_buf, int count = 1);
void int_allsum(MPI_Comm comm, void *send_buf, int *rec_buf, int count = 1);
void int_scansum(MPI_Comm comm, int *send_buf, int *rec_buf, int count = 1);
void allmax(MPI_Comm comm, double *send_buf, double *rec_buf, int count = 1);
void int_allmax(MPI_Comm comm, int *send_buf, int *rec_buf, int count = 1);
void allmin(MPI_Comm comm, double *send_buf, double *rec_buf, int count = 1);
void int_allmin(MPI_Comm comm, int *send_buf, int *rec_buf, int count = 1);
int rank_min(MPI_Comm comm, double *send_buf, double *rec_buf, int count);
void int_recv(MPI_Comm comm, int *recv_buf, int max_size,int iproc);
void recv(MPI_Comm comm, double *recv_buf, int max_size,int iproc);
void int_send(MPI_Comm comm, int *send_buf,int send_size);
void send(MPI_Comm comm, double *send_buf,int send_size);
void allgatherv(MPI_Comm comm, double *send_buf, int send_count,
double *rec_buf, int *rec_counts, int *displacements);
void gather(MPI_Comm comm, double send, double * recv);
void int_allgather(MPI_Comm comm, int send, int* recv);
void logical_or(MPI_Comm comm, void *send_buf, int *rec_buf, int count = 1);
void barrier(MPI_Comm comm);
void stop(MPI_Comm comm, std::string msg="");
void int_scatter(MPI_Comm comm, int *send_buf, int *rec_buf, int count = 1);
// void sparse_allsum(MPI_Comm comm, SparseMatrix<double> &toShare);
void print_msg(MPI_Comm comm, std::string msg);
void print_msg_once(MPI_Comm comm,std::string msg,bool prefix=true,bool endline=true);
}
#endif
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