Grid computing has become conventional in distributed systems due to technological advancements and network popularity. Grid computing facilitates distributed applications by integrating available idle network computing resources into formidable computing power. As a result, by using efficient integration and sharing of resources, this enables abundant computing resources to solve complicated p...

We describe an algorithm for the static load balancing of scientific computations that generalizes and improves upon spectral bisection. Through a novel use of multiple eigenvectors, our new spectral algorithm can divide a computation into 4 or 8 pieces at once. These multidimensional spectral partitioning algorithms generate balanced partitions that have lower communication overhead and are le...

In this paper we present a load balancing method for parallel simulation of accuracy adaptive transaction level models. In contrast to traditional fixed accuracy TLMs, timing accuracy of adaptive TLMs changes during simulation. This makes the computation and synchronization characteristics of the models variable, and practically prohibits the use of static load balancing. To deal with this issu...

Slimmed fat-trees have recently been proposed and deployed to reduce costs in High Performance Computing (HPC) clusters. While existing static routing schemes such as destination-mod-k (D-modk) routing are load-balanced and effective for full bisection bandwidth fat-trees, they incur significant load imbalance in many slimmed fat-trees. In this work, we propose a static load balanced routing sc...

Numerical examples of a Braess-like paradox in which adding capacity to a distributed computer system may degrade the performance of all users in the system have been reported. Unlike the original Braess paradox, in the models examined, this behavior occurs only in the case of finitely many users and not in the case of infinite number of users and the degree of performance degradation can incre...

In order to test a structure or portion of a structure for purposes of strength evaluation, two load test protocols are currently available in the United States. The first one is defined in Chapter 20 of the ACI 318 Building Code. It is based on a 24-hour-duration uniformly distributed static load, at a magnitude determined as a ratio of the design load. The second one, still at the proposed le...

This paper describes the experimental studies of vertical dynamic stiffness of single piles subjected to small amplitude of vibrations with constant dynamic load. The test results were correlated with the static load test results that had been carried out on the same piles. The ratio of dynamic to static stiffness mainly falls between 1.2-1.4. The dynamic stiffness measurements were compared wi...

The advent of high-speed local and wide area networks has made geographically distributed NOWs an appealing platform for supercomputing applications. In particular, ATM is an emerging standard that seems to meet the communication requirements of such applications. This paper presents the results of performance tests of a real-world parallel program over a heterogeneous ATM-based public metropol...

In order to be safely used in the 2008 Olympic Games, the currently existing gymnasiums should be taken for evaluating their safety of utilization. As the structural analysis and fire simulation have been developed to work separately in previous works, the normal loads and fire actions have not been able to be taken into account together. This paper presents a newly developed integrated system–...