Invisible Usage: Superconductivity.

An example of usage of p4 without the user ``knowing it'' is the work reported in [9]. Here, the users are modeling vortex dynamics in high-temperature superconductors using the three-dimensional, time-dependent Ginzburg-Landau equation as a phenomenological model. The data movement between processors is done by using the the BlockComm [10] system. The development and debugging of this code were done on Sun workstations and then moved into production on the Intel DELTA.