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Currently, the guaranteed throughput of a stream processing application, mapped on a multi-processor system, can be computed with a conservative dataflow model, if only time division multiplex (TDM) schedulers are applied. A TDM scheduler is a budget scheduler. Budget schedulers can be characterized by two parameters: budget and replenishment interval. This paper introduces a priority-based budget...
Pulse-based data transmission has been demonstrated as a power-saving and high performance alternative to level-based signalling over global distances. Key to its correct operation is the use of reliable and low latency pulse generators. We propose a simple design of pulse generator, evaluate its performance and show a design that offers greater safeguards against malformed input signals. We show...
The scalability and performance of the Internet depends critically on the performance of its packet switches. Current packet switches are based on single-hop crossbar fabrics, with line cards that use virtual output-queueing to reduce head-of-line blocking. In this paper we propose to use a multi-hop network on a chip (NOC) as the crossbar fabric, with FIFO-queued line cards. The use of a multi-hop...
Voltage-frequency scaling (VFS) trades a linear processor slowdown for a potentially quadratic reduction in energy consumption. Complex dependencies may exist between different tasks of an application. The impact of VFS on the end-to-end application performance is difficult to predict, especially when these tasks are mapped on multiple processors that are scaled independently. This is a problem for...
Most streaming applications, such as multimedia and digital signal processing (DSP) application, are iterative in nature, so pipelined implementation can be introduced into streaming application for high throughput. In this case, as a communication-centric design approach, NoC is capable of solving communication bottleneck incurred by throughput increment. In this paper streaming application with...
HSPA evolution has raised the requirements for WCDMA based systems where turbo code has been adapted to perform the error correction. Many parallel turbo decoding architectures have recently been proposed to enhance the channel throughput but the interleaving algorithm used in WCDMA based systems does not freely allows to use them due to high percentage of memory conflicts. This paper provides a comprehensive...
Hash functions are widely used in, and form an important part of many cryptographic protocols. Currently, a public competition is underway to find a new hash algorithm(s) for inclusion in the NIST Secure Hash Standard (SHA-3). Computational efficiency of the algorithms in hardware will form one of the evaluation criteria. In this paper, we focus on five of these candidate algorithms, namely CubeHash,...
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