Farshad Safaei

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Fault-tolerance and network routing have been among the most widely studied topics in the research of parallel processing and computer networking. A fault- tolerant routing algorithm should guarantee the delivery of messages in the presence of faulty components. In this paper, we present a comparative performance study of nine prominent fault-tolerant(More)
Parallel computers, such as multiprocessors system-on-chip (Mp-SoCs), multicomputers and cluster computers, are consisting of hundreds or thousands multiple processing units and components (such as routers, channels and connectors) connected via some interconnection network that collectively may undergo high failure rates. Therefore, these systems are(More)
In recent years, the Elliptic Curve Cryptosystem (ECC) has attracted a great deal of attention due to its advantages. In this paper, a new ECC based scheme in a hierarchical mobile agent framework is presented. In the proposed scheme legality of agents is verified by hosts to avoid the masquerade attack. Analyzing the security criteria and performance(More)
In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit: a b s t r a c t Dynamic network reconfiguration is described as the process of(More)
In modern world, all sciences especially engineering have insatiable demand for more power of processing. Although the use of modern micro-architectures has increased the performance of processors, this increment is only part of speeding up in responding such these demands. In fact, the need of some applications to parallel systems in large scales makes(More)
Multi-stage interconnection networks (MINs) have frequently been proposed as connection means in traditional parallel systems and networks-on-chip. Most of the existing papers consider some specific traffic patterns over these networks, such as uniform traffic. In this paper, the performance of MIN operating under different types of traffic patterns is(More)
Several analytical models have recently been proposed for circuit-switched interconnect networks under the uniform traffic pattern. However, there has been hardly any model reported yet that deals with other important non-uniform traffic patterns, such as hot-spots. This paper presents a new mathematical model to capture the mean message latency in the(More)
Due to high latency and high power consumption in long hops between operational cores of NoCs, the performance of such architectures has been limited. In order to fill the gap between computing requirements and efficient communications, a new technology called Wireless Network-on-Chip (WNoC) has been emerged. Employing wireless communication links between(More)