helpers.h

/*
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#pragma once

#include <mpi.h>

static inline int getLocalRank()
{
    int localRank;
    MPI_Comm localComm;

    MPI_Comm_split_type(MPI_COMM_WORLD, MPI_COMM_TYPE_SHARED, 0, MPI_INFO_NULL, &localComm);
    MPI_Comm_rank(localComm, &localRank);

    return localRank;
}