Kernel Services Approach to Fault-Masking in Real-Time Applications

: The N-Modular Redundancy (NMR) architecture has shown to perform fault-masking with acceptable cost and performance. The restriction to the majority voting imposed by many of its implementation models often discourages its using in real-time applications with sensors' data. Its implementation in real applications also exhibits time overhead, and synchronization problems beside the increase in hardware cost it involves. This paper shows a way to cope with these problems by using a distributed run-time kernel in which each service is offered in two versions, a non-NMR version and an NMR one. This offers the user a transparent way of developing its real-time faultmasking applications. 1. Introduction Computers for real-time applications must meet high standards of reliability, availability and safety, because the cost of a catastrophic system failure can exceed the initial investment in the application. A real-time data value is valid if it is correct and if it has arrived in time. As..

Visual and complexity analysis of the extended loop subdivision scheme

info:eu-repo/semantics/publishe