--- trunk/src/math/ParallelRandNumGen.cpp	2012/08/31 21:16:10	1793
+++ trunk/src/math/ParallelRandNumGen.cpp	2013/06/16 15:15:42	1879
@@ -35,7 +35,7 @@
  *                                                                      
  * [1]  Meineke, et al., J. Comp. Chem. 26, 252-271 (2005).             
  * [2]  Fennell & Gezelter, J. Chem. Phys. 124, 234104 (2006).          
- * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 24107 (2008).          
+ * [3]  Sun, Lin & Gezelter, J. Chem. Phys. 128, 234107 (2008).          
  * [4]  Kuang & Gezelter,  J. Chem. Phys. 133, 164101 (2010).
  * [5]  Vardeman, Stocker & Gezelter, J. Chem. Theory Comput. 7, 834 (2011).
  */
@@ -55,7 +55,7 @@ namespace OpenMD {
 
 #ifdef IS_MPI
     const int masterNode = 0;
-    MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); 
+    MPI::COMM_WORLD.Bcast(&seed, 1, MPI::UNSIGNED_LONG, masterNode); 
 #endif
 
     if (seed != oneSeed) {
@@ -67,8 +67,8 @@ namespace OpenMD {
 
     int nProcessors;
 #ifdef IS_MPI
-    MPI_Comm_size( MPI_COMM_WORLD, &nProcessors);
-    MPI_Comm_rank( MPI_COMM_WORLD, &myRank_);
+    nProcessors = MPI::COMM_WORLD.Get_size();
+    myRank_ = MPI::COMM_WORLD.Get_rank();
 #else
     nProcessors = 1;
     myRank_ = 0;
@@ -85,12 +85,10 @@ namespace OpenMD {
 
   ParallelRandNumGen::ParallelRandNumGen() {
 
-    std::vector<uint32> bigSeed;
     int nProcessors;
 #ifdef IS_MPI
-    const int masterNode = 0;
-    MPI_Comm_size( MPI_COMM_WORLD, &nProcessors);
-    MPI_Comm_rank( MPI_COMM_WORLD, &myRank_);
+    nProcessors = MPI::COMM_WORLD.Get_size();
+    myRank_ = MPI::COMM_WORLD.Get_rank();
 #else
     nProcessors = 1;
     myRank_ = 0;
@@ -107,7 +105,7 @@ namespace OpenMD {
     unsigned long seed = oneSeed;
 #ifdef IS_MPI
     const int masterNode = 0;
-    MPI_Bcast(&seed, 1, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); 
+    MPI::COMM_WORLD.Bcast(&seed, 1, MPI::UNSIGNED_LONG, masterNode); 
 #endif
     if (seed != oneSeed) {
       sprintf(painCave.errMsg,
@@ -125,23 +123,23 @@ namespace OpenMD {
   void ParallelRandNumGen::seed() {
 
     std::vector<uint32> bigSeed;
-    int size;
 
 #ifdef IS_MPI
+    int size;
     const int masterNode = 0;
     if (worldRank == masterNode) {
 #endif
 
       bigSeed = mtRand_->generateSeeds();
-      size = bigSeed.size();
 
 #ifdef IS_MPI
-      MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD);        
-      MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); 
+      size = bigSeed.size();
+      MPI::COMM_WORLD.Bcast(&size, 1, MPI::INT, masterNode);
+      MPI::COMM_WORLD.Bcast(&bigSeed[0], size, MPI::UNSIGNED_LONG, masterNode);
     }else {
-      MPI_Bcast(&size, 1, MPI_INT, masterNode, MPI_COMM_WORLD);        
+      MPI::COMM_WORLD.Bcast(&size, 1, MPI::INT, masterNode);
       bigSeed.resize(size);
-      MPI_Bcast(&bigSeed[0], size, MPI_UNSIGNED_LONG, masterNode, MPI_COMM_WORLD); 
+      MPI::COMM_WORLD.Bcast(&bigSeed[0], size, MPI::UNSIGNED_LONG, masterNode);
     }
 #endif