Tpetra parallel linear algebra Version of the Day
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Tpetra_EpetraRowMatrix.cpp
1/*
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3// ***********************************************************************
4//
5// Tpetra: Templated Linear Algebra Services Package
6// Copyright (2008) Sandia Corporation
7//
8// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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42*/
43
44#include "Tpetra_EpetraRowMatrix.hpp"
45#if defined(HAVE_TPETRA_EPETRA)
46
47#ifdef HAVE_TPETRACORE_MPI
48# include "Epetra_MpiComm.h"
50#else
51# include "Epetra_SerialComm.h"
52#endif // HAVE_TPETRACORE_MPI
53
54namespace Tpetra {
55namespace Details {
56
57#ifdef HAVE_TPETRACORE_MPI
58std::shared_ptr<Epetra_Comm>
59makeEpetraCommFromTeuchosComm (const Teuchos::Comm<int>& teuchosComm)
60{
61 using Tpetra::Details::extractMpiCommFromTeuchos;
62 // NOTE (mfh 11 Oct 2017) Tpetra or Teuchos may free this MPI_Comm
63 // before Epetra is done with it. To ensure that this doesn't
64 // happen, best practice is not to let the Epetra_Comm outlive the
65 // input teuchosComm.
66 MPI_Comm mpiComm = extractMpiCommFromTeuchos (teuchosComm);
67 Epetra_MpiComm* epetraComm = new Epetra_MpiComm (mpiComm);
68 return std::shared_ptr<Epetra_Comm> (static_cast<Epetra_Comm*> (epetraComm));
69}
70#else
71std::shared_ptr<Epetra_Comm>
72makeEpetraCommFromTeuchosComm (const Teuchos::Comm<int>&)
73{
74 return std::shared_ptr<Epetra_Comm> (static_cast<Epetra_Comm*> (new Epetra_SerialComm));
75}
76#endif // HAVE_TPETRACORE_MPI
77
78} // namespace Details
79} // namespace Tpetra
80
81#endif // defined(HAVE_TPETRA_EPETRA)
Declaration of Tpetra::Details::extractMpiCommFromTeuchos.
Implementation details of Tpetra.
Namespace Tpetra contains the class and methods constituting the Tpetra library.