REZA bakhshayeshi - islamic azad university of garmsar computer engineering and it department garmsar iran
mohammad kazem akbari - amirkabir university of technology computer engineering and it department tehran .iran
morteza sargolzaei javan - amirkabir university of technology computer engineering and it department tehran .iran

Steep improvement of cloud computing in recent years, persuaded experts admit it as a suitable and appropriate substitution for traditional computing methods. Nowadays, more and more organizations are getting used to create private clouds, on the other hand, public clouds must be robust enough to handle scientific-driven computing requests of users in an efficient and cost effective manner. Apart from all these necessities, it is intellectual to improve the cloud infrastructure performance by appropriate choices. In this paper we are going to evaluate the performance of some virtualized environments, including VMware ESXi, KVM, Xen, Oracle VirtualBox, and VMware Workstation using HPC Challenge (HPCC) benchmark suite and Open MPI in order to represent solutions for virtualization layer of cloud computing architecture and then designate the best approach in general using Analytic Hierarchy Process.

ClOUD computing ، virtualization,hypervisor,performance evaluation