source: issm/trunk/src/c/toolkits/mpi/patches/MPI_Lowerrow.cpp@ 11995

/*!\file MPI_Lowerrow.cpp
 * \brief: routine to distribute jobs in parallel. 
 * This handy routine will provide, along with the MPI_Upperrow, a distributed range 
 * for an index (like i,j, in a for loop). 
 * Ex: for(i=MPI_Lowerrow(num_procs)0;i<MPI_Upperrow(num_procs);i++)
 * This ensures easy parallelisation of loops if needed.
 */

#include "./mpipatches.h"

int MPI_Lowerrow(int n){


        int range;
        int lower_row;
        int upper_row;
        

        /*First, figure out our range : */
        range=DetermineLocalSize(n);

        /*Now determien upper and lower boundaries: */
        MPI_Boundariesfromrange(&lower_row,&upper_row,range);

        return lower_row;
        
}