DetermineGlobalSize.cpp

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/* \file DetermineGlobalSize.cpp
 * \brief: routine to determine global size from local size 
 */
 
#include <stdio.h>
#include <math.h>
#include "../../../shared/shared.h"
#include "../../../shared/Numerics/types.h"
 
int DetermineGlobalSize(int local_size,ISSM_MPI_Comm comm){
 
   /*output: */
   int  global_size;
 
   ISSM_MPI_Reduce(&local_size, &global_size, 1, ISSM_MPI_INT, ISSM_MPI_SUM, 0, comm);
   ISSM_MPI_Bcast(&global_size,1,ISSM_MPI_INT,0,comm);
 
   return global_size;
 
}