Efficient Multiple Multicast on Heterogeneous Network of Workstations
The Journal of Supercomputing
Superlinear Performance in Real-Time Parallel Computation
The Journal of Supercomputing
A New Approach Towards Procurement of Software Models Via Distributed Business Models
The Journal of Supercomputing
A Hybrid Analysis of an Optimization Approach for Cluster Applications
The Journal of Supercomputing
A paradox in equipment replacement under technological improvement
Operations Research Letters
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The paper analyzes the problem of rational replacement of computing systems. Such systems, especially high-performance computers, are expensive, but quickly become obsolete. A system analysis of the replacement problem is provided and the relevant modeling problems are identified and studied. The obtained results give certain rules for calculating the optimal lifetime of computing systems, which are based on the given rates of technological change in the related computer industry. Two simulation examples estimate the optimal lifetime of PCs and high-performance computers in the current US economy. The results are in good agreement with other recommendations and existing business practice.