We has tried Rally (0.7.2) for sometime last year ( Sep 2017) and remember facing a few issues. We had to eventually abandon it on our side because of time constraints we had.
Were there anything major that changed form 0.7.2 to the latest version that would specifically help us benchmark a large multi cluster node ? Is there anyway though which we can do back of the envelope calculations to determine how many load generators we might need to attain the load we want ?
Our aim is to benchmark an existing cluster (we created our own custom tracks)