
FIGURE 3.1: The Blue Waters computational analysis subsystem. [Image
courtesy of Paula Popowski, NCSA.]
FIGURE 5.1: A pictorial representation of the hardware packaging hierar chy
of the BG/Q scaling architecture. The smallest configuration could be a por-
tion of a midplane a nd a single I/O card. The Sequoia system is composed of
96 racks each with one I/O drawer containing eight I/O cards (768 I/O nodes
total).