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GlobalLinSysStaticCond.h
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File: GlobalLinSysStaticCond.h
4 //
5 // For more information, please see: http://www.nektar.info
6 //
7 // The MIT License
8 //
9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
12 //
13 // License for the specific language governing rights and limitations under
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31 //
32 // Description: A collection of routines common to statically condensed systems.
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NEKTAR_LIB_MULTIREGIONS_GLOBALLINSYSSTATICCOND_H
37 #define NEKTAR_LIB_MULTIREGIONS_GLOBALLINSYSSTATICCOND_H
38 
42 
43 namespace Nektar
44 {
45  namespace MultiRegions
46  {
47  // Forward declarations
48  class ExpList;
50 
51  typedef boost::shared_ptr<GlobalLinSysStaticCond>
53 
54  /// A global linear system.
55  class GlobalLinSysStaticCond : virtual public GlobalLinSys
56  {
57  public:
58  /// Constructor for full direct matrix solve.
60  const GlobalLinSysKey &mkey,
61  const boost::weak_ptr<ExpList> &pExpList,
62  const boost::shared_ptr<AssemblyMap> &locToGloMap);
63 
64  virtual ~GlobalLinSysStaticCond();
65 
66  protected:
68  int scLevel,
69  NekVector<NekDouble> &F_GlobBnd)
70  {
71  return m_schurCompl;
72  }
73 
74  virtual void v_BasisTransform(
75  Array<OneD, NekDouble>& pInOut,
76  int offset)
77  {
78 
79  }
80 
81  virtual void v_BasisInvTransform(
82  Array<OneD, NekDouble>& pInOut)
83  {
84 
85  }
86 
88  boost::shared_ptr<AssemblyMap> pLoctoGloMap)
89  {
90 
91  }
92 
93  virtual int v_GetNumBlocks();
94 
96  const GlobalLinSysKey &mkey,
97  const boost::weak_ptr<ExpList> &pExpList,
98  const DNekScalBlkMatSharedPtr pSchurCompl,
99  const DNekScalBlkMatSharedPtr pBinvD,
100  const DNekScalBlkMatSharedPtr pC,
101  const DNekScalBlkMatSharedPtr pInvD,
102  const boost::shared_ptr<AssemblyMap> &locToGloMap) = 0;
103 
104  /// Schur complement for Direct Static Condensation.
106  /// Block Schur complement matrix.
108  /// Block \f$ BD^{-1} \f$ matrix.
110  /// Block \f$ C \f$ matrix.
112  /// Block \f$ D^{-1} \f$ matrix.
114  /// Local to global map.
115  boost::shared_ptr<AssemblyMap> m_locToGloMap;
116  /// Workspace array for matrix multiplication
117  Array<OneD, NekDouble> m_wsp;
118 
119  /// Solve the linear system for given input and output vectors
120  /// using a specified local to global map.
121  virtual void v_Solve(
122  const Array<OneD, const NekDouble> &in,
123  Array<OneD, NekDouble> &out,
124  const AssemblyMapSharedPtr &locToGloMap,
125  const Array<OneD, const NekDouble> &dirForcing
127 
128  virtual void v_InitObject();
129 
130  /// Initialise this object
131  virtual void v_Initialise(
132  const boost::shared_ptr<AssemblyMap>& locToGloMap);
133 
134  /// Set up the storage for the Schur complement or the top level
135  /// of the multi-level Schur complement.
136  void SetupTopLevel(
137  const boost::shared_ptr<AssemblyMap>& locToGloMap);
138 
139  ///
141  const boost::shared_ptr<AssemblyMap>& locToGloMap);
142  };
143  }
144 }
145 
146 #endif