The SPECjvm 2008 benchmark is a collection for measuring the performance of a Java Runtime Environment (JRE). The SPECvirt Datacenter 2021 benchmark is the third generation SPEC benchmark for evaluating the performance of virtualized environments and the primary for measuring the performance of multiple hosts in virtualized datacenters. The Chauffeur WDK (Worklet Improvement Kit) Device was designed to simplify the development of workloads for measuring both performance and power effectivity. They provide well-selected science and engineering codes that are representative of HPC workloads and are moveable across CPU and accelerators, together with certain honest comparative performance metrics.