The focus of this paper is on a parallel algorithm for solving the transport equations in a slab geometry using multigrid. The spatial discretization scheme used is a nite element method called Modiied Linear Discontinuous scheme (MLD). The MLD scheme represents a lumped version of the standard Linear Discontinuous scheme (LD). The parallel algorithm was implemented on the Connection Machine 2 ...

Karl Sims' work on evolving body shapes and controllers for three-dimensional, physically simulated creatures generated wide interest on its publication in 1994. The purpose of this article is threefold: (a) to highlight a spate of recent work by a number of researchers in replicating, and in some cases extending, Sims' results using standard PCs (Sims' original work was done on a Connection Ma...

Data parallel languages are gaining interest as it becomes clear that they support a wider range of computation than previously believed. With improved network technology, it is now feasible to build data parallel supercomputers using traditional RISC-based workstations connected by a highspeed network. This paper presents an in-depth look at the communication behavior of nine C programs. It al...

We report on a data-parallel classical molecular dynamics algorithm and its implementation on Connection Machines CM-5 and CM-200 using CM-Fortran, a Fortran-90 dialect. A grid-based spatial decomposition of the atomic system is used for parallelization. Our previous algorithm on the CM's calculated all forces in the nearby region. A diierent algorithm using classical Verlet neighbor lists is m...

A connection graph represents resolvability in a set of clauses explicitly. The corresponding connection graph proof procedure has the deeciency that the graphs may grow, becoming impractical to handle. We present a novel proof procedure for condition graphs, which is a reenement of connection graphs. Our idea is to control the growth of the graph by recognizing tests in clauses and translating...

A communication subsystem consists of protocol functions and operating system mechanisms that support the implementation and execution of protocol stacks. To effectively parallelize a communication subsystem, careful consideration must be given to the process architecture used to structure multiple processing elements. A process architecture binds one or more processing elements with the protoc...

The black-box impedance model of voltage source inverters (VSIs) can be measured at their terminals without access to internal control details, which greatly facilitate the analysis inverter-grid interactions. However, VSI is dependent on its operating point and have different profiles when changed. This letter proposes a method for identifying under wide range points. approach based artificial...

Ricci solitons (RS) have an extensive background in modern physics and are extensively used cosmology general relativity. The focus of this work is to investigate almost (RAS) on Lorentzian manifolds with a special metric connection called semi-symmetric u-connection (SSM-connection). First, we show that any quasi-Einstein manifold having SSM-connection, whose RS, Einstein manifold. A similar c...