From 1336aecfe930546f8836ffe65dd5ff78434084eb Mon Sep 17 00:00:00 2001
From: redpony <redpony@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Tue, 2 Nov 2010 19:13:43 +0000
Subject: mpi batch optimize without mpi

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@705 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 training/mpi_batch_optimize.cc | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'training/mpi_batch_optimize.cc')

diff --git a/training/mpi_batch_optimize.cc b/training/mpi_batch_optimize.cc
index f1ee9fb4..8f45aef1 100644
--- a/training/mpi_batch_optimize.cc
+++ b/training/mpi_batch_optimize.cc
@@ -4,7 +4,10 @@
 #include <cassert>
 #include <cmath>
 
+#ifdef HAVE_MPI
 #include <mpi.h>
+#endif
+
 #include <boost/shared_ptr.hpp>
 #include <boost/program_options.hpp>
 #include <boost/program_options/variables_map.hpp>
@@ -84,12 +87,16 @@ void InitCommandLine(int argc, char** argv, po::variables_map* conf) {
 
   if (conf->count("help") || !conf->count("input_weights") || !(conf->count("training_data") | conf->count("sharded_input")) || !conf->count("decoder_config")) {
     cerr << dcmdline_options << endl;
+#ifdef HAVE_MPI
     MPI::Finalize();
+#endif
     exit(1);
   }
   if (conf->count("training_data") && conf->count("sharded_input")) {
     cerr << "Cannot specify both --training_data and --sharded_input\n";
+#ifdef HAVE_MPI
     MPI::Finalize();
+#endif
     exit(1);
   }
 }
@@ -206,9 +213,14 @@ void StoreConfig(const vector<string>& cfg, istringstream* o) {
 }
 
 int main(int argc, char** argv) {
+#ifdef HAVE_MPI
   MPI::Init(argc, argv);
   const int size = MPI::COMM_WORLD.Get_size(); 
   const int rank = MPI::COMM_WORLD.Get_rank();
+#else
+  const int size = 1;
+  const int rank = 0;
+#endif
   SetSilent(true);  // turn off verbose decoder output
   register_feature_functions();
 
@@ -220,7 +232,9 @@ int main(int argc, char** argv) {
     shard_dir = conf["sharded_input"].as<string>();
     if (!DirectoryExists(shard_dir)) {
       if (rank == 0) cerr << "Can't find shard directory: " << shard_dir << endl;
+#ifdef HAVE_MPI
       MPI::Finalize();
+#endif
       return 1;
     }
     if (rank == 0)
@@ -258,7 +272,9 @@ int main(int argc, char** argv) {
   Decoder* decoder = new Decoder(&ini);
   if (decoder->GetConf()["input"].as<string>() != "-") {
     cerr << "cdec.ini must not set an input file\n";
+#ifdef HAVE_MPI
     MPI::COMM_WORLD.Abort(1);
+#endif
   }
   if (rank == 0) cerr << "Done loading grammar!\n";
 
@@ -326,10 +342,12 @@ int main(int argc, char** argv) {
     observer.SetLocalGradientAndObjective(&gradient, &objective);
 
     double to = 0;
+#ifdef HAVE_MPI
     MPI::COMM_WORLD.Reduce(const_cast<double*>(&gradient.data()[0]), &rcv_grad[0], num_feats, MPI::DOUBLE, MPI::SUM, 0);
     MPI::COMM_WORLD.Reduce(&objective, &to, 1, MPI::DOUBLE, MPI::SUM, 0);
     swap(gradient, rcv_grad);
     objective = to;
+#endif
 
     if (rank == 0) {  // run optimizer only on rank=0 node
       if (gaussian_prior) {
@@ -376,11 +394,15 @@ int main(int argc, char** argv) {
       weights.WriteToFile(fname, true, &svv);
     }  // rank == 0
     int cint = converged;
+#ifdef HAVE_MPI
     MPI::COMM_WORLD.Bcast(const_cast<double*>(&lambdas.data()[0]), num_feats, MPI::DOUBLE, 0);
     MPI::COMM_WORLD.Bcast(&cint, 1, MPI::INT, 0);
     MPI::COMM_WORLD.Barrier();
+#endif
     converged = cint;
   }
+#ifdef HAVE_MPI
   MPI::Finalize(); 
+#endif
   return 0;
 }
-- 
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