Measurments are noisy / inaccurate.

[baryluk]

It would be nice to have a flag, to override default number of iterations, time of each test, and number of repetitions, because right now, I feel they are a bit too short, and only run once, not giving much confidants about the performance. I.e. the GPU will not have much time to ramp up the core clock frequency, and be easily influenced by small background on CPU or GPU stuff running at the same time.

I easily see 15% deviations between repeated runs of clpeak, sometimes more.