Dear Sir/Madam, I am Puneet from India and is a student in Indian Institute of Technology Guwahati. I read about IO500 and (Amdahl) Balanced Systems (such as GrayWulf). But, after doing some math, I found some of the top IO500 systems have very low Amdahl IO number. Why IO500 does not include (and publish) Amdahl IO number as one of its metric? Looks like I am missing something but I do not know what. Please help me understand this paradox. This question just came out as an academic curiosity and not to endorse or refute any system. Please help me understand more. Regards, Puneet