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A virtual collaborative engineering (VCE) capability for integrated product and process design (IPPD) has been demonstrated which allows distributed, real-time visualization and evaluation of design concepts, manufacturing processes, the total factory and enterprises in one seamless simulation environment. Deneb's VCE dynamic simulation environment provides a capability for realistic engineering 3D...
The simulation of many-body, many-particle systems has a wide range of applications in areas such as biophysics, chemistry, astrophysics, etc. It is known that the force calculation contributes 90% of the simulation time. This is mainly due to the fact that the total number of interactions in the force is O(N/sup 2/), where N is the number of particles in the system. The fast multipole algorithm proposed...
One of NASA's research and development satellite communications projects is the Advanced Communications Technology Satellite (ACTS) program. Applications utilizing high speed networks will be developed using satellite links. One such application is a distributed coupled global climate model. Climate models to study phenomena such as El Nino have been extremely useful in developing predictions and...
An efficient adaptive approach for parallel and distributed simulation (PADS) is formalized and implemented. The aggressive adaptive-risk (AAR) approach aims at reducing cascading rollbacks in large and complex simulations by clustering optimistic logical processes on each processor, and providing these processes the ability to adjust their degree of risk, at run time, to a good operating point based...
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