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Tpetra_Details_mpiIsInitialized.cpp
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41 
42 #include "Tpetra_Details_mpiIsInitialized.hpp"
43 #ifdef HAVE_TPETRACORE_MPI
44 # include "mpi.h"
45 # include <iostream>
46 #endif // HAVE_TPETRACORE_MPI
47 
48 namespace Tpetra {
49  namespace Details {
50 
52  {
53 #ifdef HAVE_TPETRACORE_MPI
54  int isInitialized = 0;
55  const int errCode = MPI_Initialized (&isInitialized);
56  // If the call failed, then assume MPI wasn't implemented
57  // correctly and return false.
58  return errCode == MPI_SUCCESS && (isInitialized != 0);
59 #else
60  return false; // Tpetra was not built with MPI support
61 #endif // HAVE_TPETRACORE_MPI
62  }
63 
65  {
66 #ifdef HAVE_TPETRACORE_MPI
67  int isFinalized = 0;
68  const int errCode = MPI_Finalized (&isFinalized);
69  // If the call failed, then assume MPI wasn't implemented
70  // correctly and return false.
71  return errCode == MPI_SUCCESS && (isFinalized != 0);
72 #else
73  return false; // Tpetra was not built with MPI support
74 #endif // HAVE_TPETRACORE_MPI
75  }
76 
77  } // namespace Details
78 } // namespace Tpetra
bool isInitialized()
Whether Tpetra is in an initialized state.
bool mpiIsFinalized()
Has MPI_Finalize been called (on this process)?
bool mpiIsInitialized()
Has MPI_Init been called (on this process)?