Abstract
We present a performance modeling and programming environment for
petaflops computers and the Blue Gene machine. It consists of a
parallel simulator, BigSim, for predicting performance of machines
with a very large number of processors, and BigNetSim, an ongoing
effort to incorporate a pluggable module of a detailed
contention-based network model. It provides the ability to make
performance predictions for machines such as BlueGene/L. We also
explore the programming environments for several planned
applications on the machines including Finite Element Method (FEM)
simulation.