* Several optimizations

AMDiS/src/ProblemVec.h

@@ -231,6 +231,11 @@ namespace AMDiS {
      */
     void writeDelayedFiles();
 
+    /** \brief
+     * Returns true, if there is calculation waiting to be started.
+     */
+    bool existsDelayedCalculation();
+
     /** \brief
      * Interpolates fct to \ref solution.
      */

AMDiS/src/Serializer.h

@@ -75,7 +75,11 @@ namespace AMDiS {
       MSG("problem serialized to %s \n", name_.c_str());
     };
 
-    virtual void writeDelayedFiles() {};
+    void writeDelayedFiles() {};
+
+    bool isWritingDelayed() { 
+      return false; 
+    };
 
   protected:
     /** \brief