Tpetra_Details_mpiIsInitialized.cpp

// @HEADER
// *****************************************************************************
//          Tpetra: Templated Linear Algebra Services Package
//
// Copyright 2008 NTESS and the Tpetra contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER
 
#include "Tpetra_Details_mpiIsInitialized.hpp"
#ifdef HAVE_TPETRACORE_MPI
#include "mpi.h"
#include <iostream>
#endif  // HAVE_TPETRACORE_MPI
 
namespace Tpetra {
namespace Details {
 
bool mpiIsInitialized() {
#ifdef HAVE_TPETRACORE_MPI
  int isInitialized = 0;
  const int errCode = MPI_Initialized(&isInitialized);
  // If the call failed, then assume MPI wasn't implemented
  // correctly and return false.
  return errCode == MPI_SUCCESS && (isInitialized != 0);
#else
  return false;  // Tpetra was not built with MPI support
#endif  // HAVE_TPETRACORE_MPI
}
 
bool mpiIsFinalized() {
#ifdef HAVE_TPETRACORE_MPI
  int isFinalized   = 0;
  const int errCode = MPI_Finalized(&isFinalized);
  // If the call failed, then assume MPI wasn't implemented
  // correctly and return false.
  return errCode == MPI_SUCCESS && (isFinalized != 0);
#else
  return false;  // Tpetra was not built with MPI support
#endif  // HAVE_TPETRACORE_MPI
}
 
}  // namespace Details
}  // namespace Tpetra