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 ;
 };

src/Particles/SphereParticles/sphereParticles/sphereParticles.hpp

@@ -82,7 +82,7 @@ private:
 	Timer  				   fieldUpdateTimer_;
 
 private:
-	bool initializeParticles();
+	
 
 	bool getParticlesInfoFromShape(
 	  const wordVector& shapeNames,
@@ -119,11 +119,14 @@ public:
 	 */
 	/*bool insertParticles
 	(
-	    const realx3Vector& position,
+    const realx3Vector& position,
 	    const wordVector&  shapes,
 	    const setFieldList& setField
 	) override ;*/
 
+    // TODO: make this method private later 
+    bool initializeParticles();
+
 	/// const reference to shapes object
 	const auto& spheres() const
 	{

src/Particles/particles/regularParticleIdHandler/regularParticleIdHandler.cpp

@@ -15,8 +15,11 @@ pFlow::regularParticleIdHandler::regularParticleIdHandler
 pFlow::Pair<pFlow::uint32, pFlow::uint32> 
     pFlow::regularParticleIdHandler::getIdRange(uint32 nNewParticles)
 {
+    
+    if(nNewParticles==0) return {0,0};
+
     uint32 startId;
-    if(maxId_==-1)
+    if(maxId_== static_cast<uint32>(-1))
     {
         startId = 0;
     }
@@ -37,7 +40,7 @@ bool pFlow::regularParticleIdHandler::initialIdCheck()
     uint32 maxId = max( *this );
     
     /// particles should get ids from 0 to size-1
-    if(maxId == -1)
+    if(maxId == static_cast<uint32>(-1))
     {
         fillSequence(*this,0u);
         maxId_ = size()-1;

src/Particles/particles/regularParticleIdHandler/regularParticleIdHandler.hpp

@@ -31,7 +31,7 @@ class regularParticleIdHandler
 {
 private:
     
-    uint32 maxId_ = -1;
+    uint32 maxId_ = static_cast<uint32>(-1);
 
   bool initialIdCheck()override; 
 public:

src/Particles/particles/shape/baseShapeNames.hpp

@@ -132,7 +132,7 @@ public:
 				return true;
 			}
 		}
-		idx = -1;
+		idx = static_cast<uint32>(-1);
 		return false;
 	}
 
@@ -144,6 +144,8 @@ public:
 
 	// - IO
 
+    using fileDictionary::write;
+
 	bool write(iOstream& os)const override;
 
 };