Data transfer between processors

- Data transfer is done
- contact search at processor boundary is done
- contact force calculation at processor boundary is done
- tests have been done on rotating drum using serial and openMP

src/Interaction/contactSearch/boundaries/processorBoundaryContactSearch/processorBoundaryContactSearch.cpp

@@ -52,7 +52,8 @@ pFlow::processorBoundaryContactSearch::processorBoundaryContactSearch(
 : 
     boundaryContactSearch(dict, boundary, cSearch),
     diameter_(cSearch.Particles().boundingSphere()),
-    masterSearch_(this->isBoundaryMaster())
+    masterSearch_(this->isBoundaryMaster()),
+    sizeRatio_(dict.getVal<real>("sizeRatio"))
 {
     
     if(masterSearch_)
@@ -65,7 +66,8 @@ pFlow::processorBoundaryContactSearch::processorBoundaryContactSearch(
         
         ppContactSearch_ = makeUnique<twoPartContactSearch>(
             searchBox_,
-            maxD);
+            maxD,
+            sizeRatio_);
     }
     else
     {
@@ -96,7 +98,8 @@ bool pFlow::processorBoundaryContactSearch::broadSearch
             thisPoints, 
             thisDiams,
             neighborProcPoints,
-            neighborProcDiams
+            neighborProcDiams,
+            name()
         );
         //pOutput<<"ppSize "<< ppPairs.size()<<endl;
         return true;

src/Interaction/contactSearch/boundaries/processorBoundaryContactSearch/processorBoundaryContactSearch.hpp

@@ -39,6 +39,8 @@ private:
 
 	bool                            masterSearch_;
 
+	real 							sizeRatio_;
+
 	void                            setSearchBox();
 
 public:

src/Interaction/contactSearch/boundaries/twoPartContactSearch/twoPartContactSearch.cpp

@@ -64,7 +64,9 @@ bool pFlow::twoPartContactSearch::broadSearchPP
 	const realx3& transferVec
 )
 {
-	
+	if(points1.empty())return true;
+	if(points2.empty()) return true;
+
 	buildList(points1);
 
 	uint32 nNotInserted = 1;
@@ -114,7 +116,8 @@ bool pFlow::twoPartContactSearch::broadSearchPP
 	const deviceScatteredFieldAccess<realx3> &points1,
 	const deviceScatteredFieldAccess<real> &diams1,
 	const realx3Vector_D& points2,
-	const realVector_D& diams2
+	const realVector_D& diams2,
+	const word& name
 )
 {
 	buildList(points1);
@@ -148,9 +151,9 @@ bool pFlow::twoPartContactSearch::broadSearchPP
 			auto oldCap = ppPairs.capacity();
 			
 			ppPairs.increaseCapacityBy(len);
-
+			
 			INFORMATION<< "Particle-particle contact pair container capacity increased from "<<
-			oldCap << " to "<<ppPairs.capacity()<<" in peiodicBoundaryContactSearch."<<END_INFO;
+			oldCap << " to "<<ppPairs.capacity()<<" in boundary contact search in "<< name <<END_INFO;
 			
 		}
 

src/Interaction/contactSearch/boundaries/twoPartContactSearch/twoPartContactSearch.hpp

@@ -85,7 +85,8 @@ public:
 		const deviceScatteredFieldAccess<realx3> &points1,
 		const deviceScatteredFieldAccess<real> &diams1,
 		const realx3Vector_D& points2,
-		const realVector_D& diams2);
+		const realVector_D& diams2,
+		const word& name);
 
 	const auto& searchCells()const
 	{

src/Interaction/contactSearch/boundaries/twoPartContactSearch/twoPartContactSearchKernels.cpp

@@ -20,9 +20,7 @@ pFlow::twoPartContactSearchKernels::buildNextHead(
   deviceViewType1D<uint32>&                 next
 )
 {
-	if (points.empty())
-		return;
-
+	
 	uint32 n = points.size();
 
 	Kokkos::parallel_for(