bug remove for GPU run after CPU MPI parallelization

- specialization of VectorSingle for word
- dummyFile creation to solve write to file in MPI mode

src/Particles/Insertion/collisionCheck/collisionCheck.cpp

@@ -60,7 +60,7 @@ pFlow::collisionCheck::checkPoint(const realx3& p, const real d) const
             {
                 uint32 n = head_(i, j, k);
     
-                while( n != -1)
+                while( n != static_cast<uint32>(-1))
                 {
                     if( ((position_[n]-p).length() - 0.5*(diameters_[n]+d )) <= 0.0 )
                     {
@@ -85,7 +85,7 @@ pFlow::collisionCheck::mapLastAddedParticle()
         "size mismatch of next and position"<<endl;
         return false;
     }
-    next_.push_back(-1);
+    next_.push_back(static_cast<uint32>(-1));
     const auto& p = position_[n];
 
     if(!searchBox_.isInside(p))

src/Particles/Insertion/insertion/insertion.cpp

@@ -74,9 +74,6 @@ pFlow::insertion::pStruct() const
 	return particles_.pStruct();
 }
 
-
-
-
 bool
 pFlow::insertion::readInsertionDict()
 {

src/Particles/Insertion/insertion/insertion.hpp

@@ -32,7 +32,9 @@ class pointStructure;
 /**
  * Base class for particle insertion
  */
-class insertion : public fileDictionary
+class insertion 
+: 
+    public fileDictionary
 {
 private:
 
@@ -118,6 +120,8 @@ public:
 	/*/// read from iIstream
 	virtual bool read(iIstream& is) = 0;*/
 
+    using fileDictionary::write;
+
 	/// write to iOstream
 	bool write(iOstream& os, const IOPattern& iop)const override ;
 };