Here at ISC 2012 in Hamburg, I sat in on this podcast with Rich Brueckner of insideHPC and Dr. Jack Dongarra, co-founder of the Top500 list. We talked about the 20-year evolution of the list and, of course, Sequoia, the BlueGene/Q system that topped the June 2012 rankings.

Dr. Dongarra spoke about Sequoia’s very impressive number of cores – 1.5 million, give or take a few – and its energy efficiency. The challenge, he said, will be to use it effectively to solve real-world problems. Give us a listen here.