This paper describes different schemes for tolerating faults in augmented hypercube multiprocessors. The architectures considered have a spare assigned to each subset of nodes (cluster). The approaches make use of hardware redundancy in the form of spare nodes and/or links and usually requires modifications in the communication as well as computation algorithms.

SOME APPLICATIONS OF RELIABILITY ANALYSES OF STANDBY REDUNDANT SYSTEMS WITH REPAIR Michikazu Kumagai , Toshiba Research & DeveZopment Center 169 Some applications are discussed concerning reliability analyses of a standby redundant system with repair. The system consists of a series subsystem composed of N identical units and n spares. Failed units are assumed to be repaired by r repair facilit...

Inventory control of spare parts is essential to many organizations, since excess inventory leads to high holding costs and stock outs can have a great impact on operations performance. This paper proposes a methodology for effective spare parts inventory control, motivated by a case study at a large oil refinery. Different demand modeling techniques and inventory policies are evaluated using r...

Multithreaded processors use a fast context switch to bridge latencies caused by memory accesses or by synchronization operations. In the block-multithreaded processor – called Rhamma – load/store, synchronization and execution operations of different threads of control are executed simultaneously by appropriate functional units. A fast context switch is performed, whenever a functional unit co...

During the past decade, the United States electric utility industry has migrated from a regulated to a deregulated business environment. As a result, utilities in the electric power sector face a much more urgent imperative to emphasize cost efficiencies as compared to the days of regulation. One major opportunity for cost savings is through reductions in spare parts inventory. Most utilities a...

This paper presents the on-going activities on the design of a Built-In-Self-Repairable micro-processor for high dependable environments. The processoc designed to pegorm SlSD instructions, is able to on-line dynamically reconfigure its internal micro-code in order to “emulate” faulty functional blocks using fault-free blocks of the system only. One of the main novelties of our approach is ther...

We consider a spare parts stock point that serves an installed base of machines. Each machine contains the same critical component, whose degradation behavior is described by a Markov process. We consider condition based spare parts supply, and show that an optimal, condition based inventory policy is 20% more efficient on average than a standard, state-independent base stock policy. We further...

Though the need for appropriate wastewater management technologies is undoubtedly a realized issue, so far there has been very little action taken towards wastewater treatment in Nepal. The centralized approaches of wastewater management have been unsuccessful as the existing traditional lagoons or activated sludge type wastewater treatment plants are not functioning or partially operating at f...

Built-in self-test (BIST) refers to those testing techniques where additional hardware is added to a design so that testing is accomplished without the aid of external hardware. Usually, a pseudo-random generator is used to apply test vectors to the circuit under test and a data compactor is used to produce a signature. To increase the reliability and yield of embedded memories, many redundancy...

In prior work on multiprocessor fairness, efficient techniques with provable properties for reallocating spare processing capacity have been elusive. In this paper, we address this shortcoming by proposing a new notion of multiprocessor fairness, called quick-release fair (QRfair) scheduling, which is a derivative of Pfair scheduling that allows efficient allocation of spare capacity. Under QRf...