Open-source ISAs such as RISC-V allow users to modify/optimize processor IP for their SW applications. With that benefit, however, comes the responsibility of the user to fully verify the modified processor IP. Many ASIC design groups do not have the requisite processor verification skills and simulation capacity and have realized delayed schedules and budget overruns. Metrics CloudSim provides a simple and economical verification solution in the Cloud that provides scalable computing, elastic storage, and a SaaS business model.