  There is no existence of dedicated simulators on the Internet that studies
the impact of load balancing principles of the cloud architectures. Request
Assignment Simulator (RAS) is a customizable, visual tool that helps to
understand the request assignment to the resources based on the load balancing
principles. We have designed this simulator to fit into Infrastructure as a
Service (IaaS) cloud model. In this paper, we present a working manual useful
for the conduct of experiment with RAS. The objective of this paper is to
instill the user to understand the pertinent parameters in the cloud, their
metrics, load balancing principles, and their impact on the performance.
