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Code-reuse attack is a growing threat to computing systems as it can circumvent existing security defenses. Fortunately, control flow integrity (CFI) is promising in defending such attack. However, former implementations generally suffer from two major drawbacks: 1) complex pre-processing to obtain control flow graph; 2) high overhead. In this paper, we propose a cross-layer approach that employs...
Heterogeneous computing is rapidly gaining increased attention due to the promise it holds in overcoming power and performance walls in traditional computing systems. With its focus on customized processing nodes dedicated to the different tasks in an application, it is hoped that these walls will be overcome. Therefore, CPU-FPGA co-architectures are also gaining ground in application areas like recognition,...
As transistor density continues to increase with the advent of nanotechnology, reliability issues raised by more frequently appeared soft errors are becoming even more critical to the next-generation multiprocessor systems. In this paper, we present a systematic approach to address the soft-error problem in multiprocessor system-on-chip with the consideration of system performance optimization. To...
To minimize the access latency of set-associative caches, the data in all ways are read out in parallel with the tag lookup. However, this is energy inefficient, as only the data from the matching way is used and the others are discarded. This paper proposes an early tag lookup (ETL) technique for L1 instruction caches that determines the matching way one cycle earlier than the cache access, so that...
Cache memories, while useful for improving the average-case performance for general-purpose applications, are not suitable for real-time systems due to the time unpredictability. In this paper, we propose a Performance Enhancement Guaranteed Cache (PEG-C) to ensure performance improvement in the worst case while achieving as good average-case performance as a regular hardware-controlled cache. We...
To achieve high performance, conventional superscalar processors maintain maximum front-end instruction delivery bandwidth, which is often suboptimal when program behavior and priority metrics change. This paper proposes an adaptive front-end throttling technique that dynamically adjusts the front-end instruction delivery bandwidth as program behavior changes to optimize a target metric, being performance,...
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