mpi_send_block()

template<typename T >

void cntr::distributed_array< T >::mpi_send_block	(	int	j,
		int	dest
	)

Sends the j-th block to the MPI rank dest

Purpose

Sends the j-th block to the MPI rank (=tid_ of the block) dest

Parameters

j	Index of the block send
dest	Index of the MPI rank (=tid_ of the block) receiving the data

Definition at line 292 of file cntr_distributed_array_impl.hpp.

                                                                             {
    assert(0<=dest && 0<=ntasks_-1);
    int root=tid_map_[j];
    if(dest==root){
        return;
    }else{
        int tag=100;
        size_t int_per_t=sizeof(T)/sizeof(int);
        size_t len=int_per_t*blocksize_;
        if(tid_map_[j]==tid_){
            MPI_Send((int*) block(j), len, MPI_INT, dest, tag, MPI_COMM_WORLD);
            // MPI::COMM_WORLD.Send((int*) block(j),len,MPI::INT,dest,tag);
        }
        if(tid_==dest){
            // MPI::COMM_WORLD.Recv((int*) block(j),len,MPI::INT,root,tag);
            MPI_Recv((int*) block(j), len, MPI_INT, root, tag, MPI_COMM_WORLD, 
                MPI_STATUS_IGNORE);
        }
    }
}