Titanium: A High-Performance Java Dialect

Kathy Yelick, Luigi Semenzato, Geoff Pike, Carleton
Miyamoto, Ben Liblit, Arvind Krishnamurthy, Paul Hilfinger,
Susan Graham, David Gay, Phil Colella, and Alex Aiken

Titanium is a language and system for high-performance
parallel scientific computing.  Titanium uses Java as its
base, thereby leveraging the advantages of that language and
allowing us to focus attention on parallel computing issues.
The main additions to Java are immutable classes,
multi-dimensional arrays, an explicitly parallel SPMD model
of computation with a global address space, and zone-based
memory management.  We discuss these features and our design
approach, and report progress on the development of
Titanium, including our current driving application: a
three-dimensional adaptive mesh refinement parallel Poisson