-My appreciation and thanks go to the members of the team AND ({\it Algorithmique Numérique Distribuée}) for the warm and friendly atmosphere in which they allowed me to work. These include Jacques Bahi, Pierre-Cyrille Héam, Abdallah Makhoul, Jean-François Couchot, Ahmed Mostefaoui, Yousra Ahmed Fadil, Pierre Saenger, Zeinab Fawaz, Amor Lalama, Nesrine Khernane, Stéphane Domas, Mohammed Bakiri, Michel Salomon, Karine Deschinkel, Christophe Guyeux, Mourad Hakem, David Laiymani, Gilles Perrot, Christian Salim, Santiago Costarelli, Carol Habib, Hassan Moustafa Harb and Ke Du. I would like to give a special thanks for Asst.~Prof.~Dr.~Arnaud Giersch who helped me understand the simulation over SimGrid simulator.
+My appreciation and thanks go to the members of the team AND ({\it Algorithmique Numérique Distribuée}) for the warm and friendly atmosphere in which they allowed me to work. These include Jacques Bahi, Pierre-Cyrille Héam, Abdallah Makhoul, Jean-François Couchot, Ahmed Mostefaoui, Yousra Ahmed Fadil, Pierre Saenger, Zeinab Fawaz, Amor Lalama, Nesrine Khernane, Stéphane Domas, Mohammed Bakiri, Michel Salomon, Karine Deschinkel, Christophe Guyeux, Mourad Hakem, David Laiymani, Gilles Perrot, Fabrice Ambert, Christian Salim, Santiago Costarelli, Carol Habib, Hassan Moustafa Harb and Ke Du. I would like to give a special thanks for Asst.~Prof.~Dr.~Arnaud Giersch who helped me understand the simulation over SimGrid simulator.