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AnasaziOutputStreamTraits.hpp
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4// Anasazi: Block Eigensolvers Package
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41
42#ifndef ANASAZI_OUTPUT_STREAM_TRAITS_HPP
43#define ANASAZI_OUTPUT_STREAM_TRAITS_HPP
44
49#include "AnasaziConfigDefs.hpp"
50#include "AnasaziTypes.hpp"
51
52#include "Teuchos_FancyOStream.hpp"
53#include "Teuchos_RCP.hpp"
54
55#ifdef HAVE_MPI
56#include <mpi.h>
57#endif
58
68namespace Anasazi {
69
70template<class OperatorType>
72
73 // The input argument, op, is presumed to be a valid object that can be queried to
74 // determine the correct output stream.
75 static Teuchos::RCP<Teuchos::FancyOStream>
76 getOutputStream (const OperatorType& /* op */, int rootRank = 0)
77 {
78 Teuchos::RCP<Teuchos::FancyOStream> fos = Teuchos::getFancyOStream(Teuchos::rcpFromRef(std::cout));
79
80#ifdef HAVE_MPI
81 // The default implementation will output on processor 0, if parallel.
82 int myRank = 0;
83 int numProcs = 1;
84 // Initialize MPI
85 int mpiStarted = 0;
86 MPI_Initialized(&mpiStarted);
87 if (mpiStarted)
88 {
89 MPI_Comm_rank(MPI_COMM_WORLD, &myRank);
90 MPI_Comm_size(MPI_COMM_WORLD, &numProcs);
91 }
92 fos->setProcRankAndSize(myRank, numProcs);
93 fos->setOutputToRootOnly(rootRank);
94#endif
95
96 return fos;
97 }
98};
99
100
101} // end Anasazi namespace
102
103#endif
104
105// end of file AnasaziOutputStreamTraits.hpp
Anasazi header file which uses auto-configuration information to include necessary C++ headers.
Types and exceptions used within Anasazi solvers and interfaces.
Namespace Anasazi contains the classes, structs, enums and utilities used by the Anasazi package.
Output managers remove the need for the eigensolver to know any information about the required output...