IMO: If your development organization reaches the point where this kind of advice from McKinsey & Co. might be able to improve things, you've already lost.
You don't need to measure software developer productivity. The article (or ad) admits as much:<p>> Further, attracting and retaining top software development talent depends in large part on providing a workplace and tools that allow engineers to do their best work and encourages their creativity.<p>So do that!<p>Happy people are productive, and talented, creative people move your business forward.
I only found one useful productivity measurement and it was in Camille Fournier - the managers path.<p>She states that the only useful measurement is how fast can a code change get to production.