The Hector Parallel Run-Time Environment

Harnessing the compuational capabilities of a network of workstations promises to off-load work from overloaded supercomputers onto largely idle resources overnight. Several capabilities are needed to do this, including support for an architecture-indpendent parallel programming environment, task migration, intelligent resource allocation, and fault tolerance. The Hector parallel run-time environment is designed to present these capabilities transparently to programmers. MPI programs can be run under this environment with no modifications to their source code needed. The design of Hector, its internal structure, and several benchmarks and tests are presented