Partial redundancy elimination (PRE) is a code optimization algorithm that simultaneously performs common sub-expression and loop-invariant motion. Traditional PREs analyze the entire program eliminate redundancies. By contrast, demand-driven PRE (DDPRRE) proposed as an to only part of determine whether each expression redundant by query propagation. The previous DDPRE reduces analysis time bec...

Autonomous driving requires high-performance computing devices including general-purpose CPUs as well specific accelerators, with GPUs having a key role due to their flexibility. Safety-critical microcontrollers have achieved ASIL-D compliance by implementing diverse redundancy lockstep execution on-chip. However, GPU does not provide natively, thus failing reach ASIL-D, which could only be rea...

Monitoring the environment is one of the main applications of wireless sensor networks. Given that these networks are densely populated and that local variations in the environmental variables are small, a large amount of redundant data is generated by sensor nodes. In this paper we present a protocol for data dissemination in hierarchical clustered sensor networks that integrates security and ...

due to limitations in computing resources of mobile nodes, mobile ad-hoc networks (manets) are very fault-prone. so far, redundancy at different levels of the network has been considered an efficient strategy to enhance the fault-tolerance of networks. indeed, ad-hoc networks are extremely redundant; therefore, natural redundancy to fault tolerance enhancement has a great impact on the network ...

Distributed storage infrastructures require the use of data redundancy to achieve high data reliability. Unfortunately, the use of redundancy introduces storage and communication overheads, which can either reduce the overall storage capacity of the system or increase its costs. To mitigate the storage and communication overhead, different redundancy schemes have been proposed. However, due to ...

Redundancy payments for collective dismissals are incorporated into a Shapiro-Stiglitz model of efficiency wages. It is shown that a fixed payment will lower wages, leave employment and welfare unaffected if there are no wage-dependent taxes, no additional firing costs and if unemployment benefits are not altered by redundancy payments. If payroll taxes exceed firing costs and unemployment bene...

IEC 61508-2010 puts special limits on the on-chip redundancy of one single chip, for example the safety integrity level (SIL) is limited up to SIL 3. About this, however, there are no specific explanations. Based on the safety-critical system of on-chip redundancy for a typical programmable logic device (FPGA), this paper proves that the highest SIL is 3; analyses the factors that may impact th...