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OutputInfo.cpp
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2 //
3 // File: OutputInfo.cpp
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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).
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31 //
32 // Description: FLD file format output.
33 //
34 ////////////////////////////////////////////////////////////////////////////////
35 
36 #include <set>
37 #include <string>
38 using namespace std;
39 
40 #include "OutputInfo.h"
42 #include <boost/format.hpp>
43 
44 namespace Nektar
45 {
46 namespace Utilities
47 {
48 
49 ModuleKey OutputInfo::m_className = GetModuleFactory().RegisterCreatorFunction(
50  ModuleKey(eOutputModule, "info"), OutputInfo::create,
51  "Writes an Info file.");
52 
53 OutputInfo::OutputInfo(FieldSharedPtr f) : OutputModule(f)
54 {
55 }
56 
58 {
59 }
60 
61 void OutputInfo::Process(po::variables_map &vm)
62 {
63  // Extract the output filename and extension
64  string filename = m_config["outfile"].as<string>();
65  int i;
66 
67  if (m_f->m_verbose)
68  {
69  cout << "OutputInfo: Writing Info file..." << endl;
70  }
71 
72  // partition mesh
73  ASSERTL0(vm.count("nprocs") > 0,
74  "--nprocs nust be specified with info output");
75 
76  int nprocs = vm["nprocs"].as<int>();
77 
78  LibUtilities::CommSharedPtr vComm = boost::shared_ptr<FieldConvertComm>(
79  new FieldConvertComm(0, NULL, nprocs,0));
80  vComm->SplitComm(1,nprocs);
81 
82  // define new session with psuedo parallel communicator
83  string xml_ending = "xml";
84  string xml_gz_ending = "xml.gz";
85 
86  std::vector<std::string> files;
87  // load .xml ending
88  for (int i = 0; i < m_f->m_inputfiles[xml_ending].size(); ++i)
89  {
90  files.push_back(m_f->m_inputfiles[xml_ending][i]);
91  }
92 
93  // load any .xml.gz endings
94  for (int j =0; j < m_f->m_inputfiles[xml_gz_ending].size(); ++j)
95  {
96  files.push_back(m_f->m_inputfiles[xml_gz_ending][j]);
97  }
98 
100  boost::shared_ptr<LibUtilities::SessionReader>(
101  new LibUtilities::SessionReader(0,0,files,vComm));
102  vSession->SetUpXmlDoc();
103 
104  // Default partitioner to use is Metis. Use Scotch as default
105  // if it is installed. Override default with command-line flags
106  // if they are set.
107  string vPartitionerName = "Metis";
108  if (LibUtilities::GetMeshPartitionFactory().ModuleExists("Scotch"))
109  {
110  vPartitionerName = "Scotch";
111  }
112  if (vSession->DefinesCmdLineArgument("use-metis"))
113  {
114  vPartitionerName = "Metis";
115  }
116  if (vSession->DefinesCmdLineArgument("use-scotch"))
117  {
118  vPartitionerName = "Scotch";
119  }
120 
121  LibUtilities::MeshPartitionSharedPtr vMeshPartition =
123  vPartitionerName, vSession);
124 
125  vMeshPartition->PartitionMesh(false);
126 
127  // get hold of local partition ids
128  std::vector<std::vector<unsigned int> > ElementIDs(nprocs);
129 
130  // Populate the list of element ID lists from all processes
131  for (i = 0; i < nprocs; ++i)
132  {
133  std::vector<unsigned int> tmp;
134  vMeshPartition->GetElementIDs(i,tmp);
135  ElementIDs[i] = tmp;
136  }
137 
138  // Set up output names
139  std::vector<std::string> filenames;
140  for(int i = 0; i < nprocs; ++i)
141  {
142  boost::format pad("P%1$07d.fld");
143  pad % i;
144  filenames.push_back(pad.str());
145  }
146 
147  // Write the output file
148  m_f->m_fld->WriteMultiFldFileIDs(filename,filenames, ElementIDs);
149 }
150 
151 }
152 }