World Wide Web traffic is the largest and fastest growing segment of the Internet. Globally available resources create access patterns for which the geographical, as well as temporal, aspects must be considered.

The CAVE is a surround-screen, surround-sound, projection-based virtual reality (VR) system developed under the HPCC Program. The illusion of immersion is created by projecting 3-D computer graphics into a 10'x10'x9' cube composed of display screens that completely surround the viewer. It is coupled with head and hand tracking systems to produce the correct stereo perspective and to isolate the position and orientation of a 3-D input device. A sound system provides audio feedback. The viewer explores the virtual world by moving around inside the cube and grabbing objects with a three-button, wand-like device.

Molecular forces create tension at the surface of liquid films that makes them contract to a minimum surface area. Two researchers have simulated the formation of water droplets on the surface of such widely used polymers as polyethylene and Teflon. The above image represents the simulated droplet of water formed from a monolayer of 324 water molecules on the surface of crystal teflon.

An image of an incompressible fluid flow in a two-stroke engine, computed using the CMPGRD and OVERTURE libraries to support computations involving complex geometries. The wire frame shows the location of the grids, including transverse ports, cylinder, cylinder head, and exhaust port. The colors indicate the magnitude of one velocity component going left to right in this picture, with blue representing the maximum positive velocity and violet representing the maximum negative velocity.