I agree with tanderson92. Whether the actual science from all the simulations is "worthwhile" is for people much smarter than me, but to get time on a "leadersh

I agree with tanderson92. Whether the actual science from all the simulations is "worthwhile" is for people much smarter than me, but to get time on a "leadership" class machine, you have to prove in your application that a) it will run properly on the hardware; and b) that it's science you wouldn't get done on smaller machines. So lots of the "big data" type problems with lots of uncoordinated jobs aren't going to take advantage of the primary component of these big computers, the node interconnect. The computers really shine with big fluid dynamics simulations where there's lots of chatter between different components of the simulation to communicate boundary conditions and the like.