1. Parallel Computing division; ATOS Company; 1 rue de Provence Echirolles 38130 France
2. Departmant of Computer Science; CReSTIC (Centre de Recherche en STIC) EA3804, University of Reims Champagne-Ardenne; Moulin de la Housse Reims 51687 France
3. Department of Chemistry; ICMR, UMR CNRS 7312, University of Reims Champagne-Ardenne; Moulin de la Housse Reims 51687 France