Analytical Model For a MultiprocessorWith Private Caches And Shared Memory

Nikolov, Angel Vassilev

doi:10.15837/ijccc.2008.2.2385

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…The third category focused on those models of hierarchal memory systems in multicore processors. Nikolov 12 presented an analytical model for a bus-based shared memory with only private caches. The model intended to capture the whole range of invalidated cache coherence protocols.…”

Section: Background and Motivationmentioning

confidence: 99%

Performance aware shared memory hierarchy model for multicore processors

Mohamed

Mubark

Zagloul

2023

Sci Rep

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Despite the fact that multicore processors have a better instruction execution speed and lower power consumption, they also encounter a set of design challenges. The appearance of multicore and many core architectures has raised the problem of managing shared hierarchical memory systems. The main focus of this paper is to evaluate the behavior of shared hierarchical memory systems by modeling their response time analytically. Since the gap between the memory and processor speed increases rapidly, it gets more crucial to find an analytical model that includes the significant factors that affect the performance of hierarchical memory systems. The proposed model considers the interdependence between different memory layers and differentiates between the memory response time and memory system time. Moreover, the model evaluates the effect of memory hierarchy on the variance of the memory access time. The existence of a large variance can lead to extremely long wait queues which can dramatically affect the performance of multicore processors

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Section: Background and Motivationmentioning

confidence: 99%

Performance aware shared memory hierarchy model for multicore processors

Mohamed

Mubark

Zagloul

2023

Sci Rep

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Analytical Modelling and Performability Evaluation of Multi-Channel WLANs with Global Failures

Ever¹,

Kirsal

Ever

et al. 2015

INT J COMPUT COMMUN

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Wireless local area networks (WLANs) which are based on IEEE 802.11 standard are used widely in existing local area network configurations. IEEE 802.11 offers multiple non-overlapping channels to increase the capacity of the network. There are strong evidences that WLANs are prone to impairments. In order to improve the quality of service (QoS) and to evaluate the performance of WLANs realistically, the availability of the systems should be considered. This paper studies performability evaluation of a multi-channel WLAN using analytical modelling approach. Unlike the existing studies, the failures of the overall system, where a critical function unit fails making all the channels unavailable are considered. A new term is introduced as global failures. It is possible to solve the models considered using matrix geometric method where system parameters and minimal non negative solution R is computed by an iterative method. However spectral expansion method is a well-known alternative where the iterative calculations for solving R is avoided using eigenvalues and eigenvectors. The exact spectral expansion method is employed to obtain performability measures such as mean queue length and blocking probability. Iterative refinements are employed in solution of simultaneous equations.

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Analytical Model For a MultiprocessorWith Private Caches And Shared Memory

Cited by 2 publications

References 7 publications

Performance aware shared memory hierarchy model for multicore processors

Performance aware shared memory hierarchy model for multicore processors

Analytical Modelling and Performability Evaluation of Multi-Channel WLANs with Global Failures

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