--- branches/development/src/optimization/Problem.cpp	2012/06/05 18:02:44	1741
+++ trunk/src/optimization/Problem.cpp	2014/02/26 14:14:50	1969
@@ -1,10 +1,9 @@
-#include "config.h"
-#include "optimization/Problem.hpp"
-
 #ifdef IS_MPI
 #include <mpi.h>
 #endif
 
+#include "config.h"
+#include "optimization/Problem.hpp"
 
 namespace QuantLib {
   RealType Problem::DotProduct(DynamicVector<RealType>& v1, 
@@ -13,8 +12,8 @@ namespace QuantLib {
 #ifdef IS_MPI
     // in parallel, we need to add up the contributions from all
     // processors:
-    MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &dp, 1, MPI::REALTYPE, 
-                              MPI::SUM);
+    MPI_Allreduce(MPI_IN_PLACE, &dp, 1, MPI_REALTYPE, 
+                  MPI_SUM, MPI_COMM_WORLD);
 #endif
     return dp;    
   }
@@ -25,8 +24,8 @@ namespace QuantLib {
 #ifdef IS_MPI
     // in parallel, we need to add up the contributions from all
     // processors:
-    MPI::COMM_WORLD.Allreduce(MPI::IN_PLACE, &dot, 1, MPI::REALTYPE, 
-                              MPI::SUM);
+    MPI_Allreduce(MPI_IN_PLACE, &dot, 1, MPI_REALTYPE, 
+                  MPI_SUM, MPI_COMM_WORLD);
 #endif
     return dot;