Empirical Investigation of Cloud, Grid and Virtualization Using Compiler Optimization Level for Threads Processes Journal title: International Journal of Innovative Research in Computer Science and Technology Authors: Solanke Ilesanmi, Alomaja Victor Ojumu, Ajayi Abiodun Folurera and Ajao Aisha Omorinbola Subject(s): Electrical and Electronic Engineering, Chemical Engineering, Civil Engineering, Computer Science, Artificial Intelligence, Computer Science, Information Systems, Computer Science, Interdisciplinary Applications, Engineering, Multidisciplinary, Engineering, Civil, Computer Science, Cybernetics, Computer Science, Theory & Methods, Computer Science, Software Engineering