Security has become an important characteristic for many real-time systems. Due to the lack of enough and stable energy supply in battery-powered embedded systems, one of the foremost challenges is the mismatch betwee...
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Group communication services （GCSs） are becoming increasingly important as a wide field of promising applications has emerged to serve millions of users distributed across the ***,it is challenging to make the servi...
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Group communication services （GCSs） are becoming increasingly important as a wide field of promising applications has emerged to serve millions of users distributed across the ***,it is challenging to make the service fault tolerance and scalable to fulfill the voluminous demand of users in a distributed network （DN）.While many reliable group communication protocols have been dedicated to addressing such a challenge so as to accommodate the changes in the network,they are often costly or require complicated strategies to handle the service interruptions caused by node departures or link failures,which hinders the service *** this paper,we present two schemes to address the *** first one is a location-aware replication scheme called NS,which makes replicas in a dispersed fashion that enables the services on nodes to gain immunity of failures with different patterns （e.g.,network partition and single point failure） while keeping replication overhead *** second one is a novel failure recovery scheme that exploits the independence between service recovery and structure recovery in time domain to achieve quick failure *** simulation results indicate that the two proposed schemes outperform the existing schemes and simple alternative schemes in service success rate,recovery latency,and communication cost.
Modern video applications such as video codecs are memory-intensive. As an emerging non-volatile memory technology, phase change memory (PCM) will benefit video applications due to its high density, low leakage power ...
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As the technology node continues to shrink, an effective and accurate metric is essential to measure the test quality of small delay faults (SDFs), which may cause failure at circuit outputs. Owing to including gross ...
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Semantic gap is one of the most important problems in the virtualized computer systems. Solving this problem not only helps to develop security and virtual machine monitoring applications, but also benefits for VMM re...
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Some typical memory access patterns are provided and programmed in C, which can be used as benchmark to characterize the various techniques and algorithms aim to improve the performance of NUMA memory access. These ac...
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Along with commercial chip-multiprocessors (CMPs) integrating more and more cores, memory systems are playing an increasingly important role in multithread applications. Currently, trace-driven simulation is widely ad...
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ISBN:
(纸本)9781450312196
Along with commercial chip-multiprocessors (CMPs) integrating more and more cores, memory systems are playing an increasingly important role in multithread applications. Currently, trace-driven simulation is widely adopted in memory system scheduling research, since it is faster than execution-driven simulation and does not require data computation. On the contrary, due to the same reason, its trace replay for concurrent thread execution lacks data information and contains only addresses, so misplacement occurs in simulations when the trace of one thread runs ahead or behind others. This kind of distortion can cause remarkable errors during research. As shown in our experiment, trace misplacement causes an error rate of up to 10.22% in the metrics, including weighted IPC speedup, harmonic mean of IPC, and CPI throughput. This paper presents a methodology to avoid trace misplacement in trace-driven simulation and to ensure the accuracy of memory scheduling simulation in multithread applications, thus revealing a reliable means to study inter-thread actions in memory systems. Copyright 2012 ACM.
In this paper, we present a novel on-chip path delay measurement architecture for efficiently detecting and debugging of delay faults in the fabricated integrated circuits. Several delay stages are employed in the pro...
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NAND Flash memories have rapidly emerged as a storage class memory such as SSD, CF Card, SD Card. Due to its distinct operation mechanisms, NAND Flash memory suffers from erase/program endurance, data retention and pr...
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With the continual scaling of semiconductor process technology, the circuit timing is increasingly impacted by process variations. It is thus important to categorize high-speed digital circuits into multiple bins of d...
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