The GrADS MacroGrid the large scale, wide-area grid environment
on which numerous grid applications will run is required both
to validate MicroGrid results and to explore
configurations that cannot be simulated effectively in a MicroGrid environment.
GrADS PIs are already working with the NSF Partnerships for Advanced
Computational Infrastructure (the Alliance and NPACI), NASA, and DOE
to build large-scale prototype grids. In addition we are constructing
integrated testbeds within the GrADS institutions, for controlled experiments
running distributed applications executing atop the developing GrADSoft
architecture.