I want to perform a benchmarking Test (BPFM, IOR, FIO & Sysbench) on a Ubuntu VM. The benchmark should use the available amount of cores in steps of 2^2 (So 2, 4, 8, 16, ... up to the available amount of cores (e.g. 64)). The benchmark should run in parallel on these cores. So 2 benchmark should run 50% each of the Benchmarking test in parallel. 4 Benchmarks should run 25% each of the Benchmarking test in parallel and so on. The CPU usage should also show 100% usage for 2, 4, etc. CPU's when the Benchmark is running. How can I do this?

I installed Open-MPI, BPMF, IOR, FIO and Sysbench. I tried to run each benchmark in parallel on my Ubuntu VM. I tried it with mpirun and I wasn't able to only let the benchmark run on the specific amount of CPU's and with 100% usage.