The High Performance Group (HPG) of the Standard Performance Evaluation Corporation (SPEC) develops benchmark methodologies for high-performance computing systems. The group also releases production quality benchmark suites like SPEC OMP2012, SPEC ACCEL and the newly released SPEC HPC2021, that can evaluate all dimensions of parallelism. These benchmarks are used in academia and industry to conduct research in HPC systems, facilitate procurement, testing and tuning of HPC systems. In order to make the benchmarks more accessible, SPEC HPG offers them free of charge to non-commercial users. In this half-day tutorial, participants will learn how to leverage SPEC benchmarks for performance evaluation, tuning of system parameters, comparison of systems (e.g., for procurement), results interpretation and publication and its power measurement capabilities. The presenters will provide demos and hands-on guidance focusing on the newly released SPEC HPC2021 benchmark. An SSH-capable device is required for hands-on.