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example
UG_ExMaps
example/UG_ExMaps/cxx_main.cpp
Go to the documentation of this file.
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//@HEADER
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// ************************************************************************
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//
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// Epetra: Linear Algebra Services Package
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// Copyright 2011 Sandia Corporation
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// 3. Neither the name of the Corporation nor the names of the
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
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//
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// ************************************************************************
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//@HEADER
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#include <stdio.h>
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#include <stdlib.h>
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#include "Epetra_config.h"
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#ifdef HAVE_MPI
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#include "mpi.h"
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#include "
Epetra_MpiComm.h
"
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#else
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#include "
Epetra_SerialComm.h
"
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#endif
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#include "
Epetra_Map.h
"
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#include "
Epetra_IntSerialDenseVector.h
"
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#include "
Epetra_Version.h
"
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// prototype
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int
main
(
int
argc,
char
*argv[]) {
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#ifdef HAVE_MPI
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MPI_Init(&argc,&argv);
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Epetra_MpiComm
Comm(MPI_COMM_WORLD);
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#else
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Epetra_SerialComm
Comm;
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#endif
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if
(Comm.
MyPID
()==0)
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std::cout <<
Epetra_Version
() << std::endl << std::endl;
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std::cout << Comm << std::endl;
// Print out process information
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// Get the number of global equations from the command line
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if
(argc!=2) {
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std::cout <<
"Usage: "
<< argv[0] <<
" number_of_equations"
<< std::endl;
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exit(1);
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}
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int
NumGlobalElements = atoi(argv[1]);
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// Construct a Map that puts approximately the same number of
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// equations on each processor.
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Epetra_Map
Map(NumGlobalElements, 0, Comm);
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// Get update list and number of local equations from newly created Map.
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std::cout << Map << std::endl;
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#ifdef UG_EX1_MPI
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MPI_Finalize() ;
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#endif
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return
0;
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}
Epetra_Map
Epetra_Map: A class for partitioning vectors and matrices.
Definition:
Epetra_Map.h:127
Epetra_SerialComm::MyPID
int MyPID() const
Return my process ID.
Definition:
Epetra_SerialComm.h:440
Epetra_MpiComm
Epetra_MpiComm: The Epetra MPI Communication Class.
Definition:
Epetra_MpiComm.h:72
Epetra_Version
std::string Epetra_Version()
Definition:
Epetra_Version.h:47
Epetra_SerialComm.h
Epetra_SerialComm
Epetra_SerialComm: The Epetra Serial Communication Class.
Definition:
Epetra_SerialComm.h:69
Epetra_MpiComm.h
Epetra_IntSerialDenseVector.h
Epetra_Map.h
main
int main(int argc, char *argv[])
Definition:
example/C_wrappers/c_main.c:49
Epetra_Version.h
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