From fd31030d4ce46e1008ae47d7e25b06e60a26a4fe Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@cs.cmu.edu>
Date: Sat, 16 Apr 2011 02:40:31 -0400
Subject: llh computer

---
 training/compute_cllh.cc | 24 +++++++++++++++++++-----
 1 file changed, 19 insertions(+), 5 deletions(-)

(limited to 'training/compute_cllh.cc')

diff --git a/training/compute_cllh.cc b/training/compute_cllh.cc
index f25e17c3..332f6d0c 100644
--- a/training/compute_cllh.cc
+++ b/training/compute_cllh.cc
@@ -5,8 +5,10 @@
 #include <cassert>
 #include <cmath>
 
-#include <mpi.h>
+#include "config.h"
+#ifdef HAVE_MPI
 #include <boost/mpi.hpp>
+#endif
 #include <boost/program_options.hpp>
 #include <boost/program_options/variables_map.hpp>
 
@@ -22,7 +24,7 @@
 using namespace std;
 namespace po = boost::program_options;
 
-void InitCommandLine(int argc, char** argv, po::variables_map* conf) {
+bool InitCommandLine(int argc, char** argv, po::variables_map* conf) {
   po::options_description opts("Configuration options");
   opts.add_options()
         ("weights,w",po::value<string>(),"Input feature weights file")
@@ -45,9 +47,9 @@ void InitCommandLine(int argc, char** argv, po::variables_map* conf) {
 
   if (conf->count("help") || !conf->count("training_data") || !conf->count("decoder_config")) {
     cerr << dcmdline_options << endl;
-    MPI::Finalize();
-    exit(1);
+    return false;
   }
+  return true;
 }
 
 void ReadTrainingCorpus(const string& fname, int rank, int size, vector<string>* c, vector<int>* ids) {
@@ -125,18 +127,26 @@ struct TrainingObserver : public DecoderObserver {
   int state;
 };
 
+#ifdef HAVE_MPI
 namespace mpi = boost::mpi;
+#endif
 
 int main(int argc, char** argv) {
+#ifdef HAVE_MPI
   mpi::environment env(argc, argv);
   mpi::communicator world;
   const int size = world.size(); 
   const int rank = world.rank();
+#else
+  const int size = 1;
+  const int rank = 0;
+#endif
   if (size > 1) SetSilent(true);  // turn off verbose decoder output
   register_feature_functions();
 
   po::variables_map conf;
-  InitCommandLine(argc, argv, &conf);
+  if (!InitCommandLine(argc, argv, &conf))
+    return false;
 
   // load initial weights
   Weights weights;
@@ -176,7 +186,11 @@ int main(int argc, char** argv) {
     decoder.Decode(corpus[i], &observer);
   }
 
+#ifdef HAVE_MPI
   reduce(world, observer.acc_obj, objective, std::plus<double>(), 0);
+#else
+  objective = observer.acc_obj;
+#endif
 
   if (rank == 0)
     cout << "OBJECTIVE: " << objective << endl;
-- 
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