# Destructive Read by Wave Interference for Arbitration

## TL;DR

This paper introduces a wave interference-based arbitration scheme for Network-on-Chip systems, enabling high-speed, full-information arbitration through wave cancellation techniques to improve multiprocessor deep learning computation efficiency.

## Contribution

It proposes a novel wave interference method for arbitration in NoC, achieving speed-of-light arbitration with full information sharing among nodes.

## Key findings

- Achieves arbitration at the speed of light.
- Enables nodes to capture tokens via wave cancellation.
- Provides full arbitration information to all nodes.

## Abstract

With the advent of big data and deep learning, computation power has become a bottleneck for many applications. Network-on-Chip (NoC) has been proposed to enable multiprocessor acceleration for deep learning computation, and efficient arbitration is a key issue for high performance. In this paper, an arbitration scheme based on interference of wave is proposed. In this scheme, home node sends out multiple tokens in different frequencies, and nodes that are competing for bus can capture token by sending out wave that cancels its specific wave token. In this scheme, speed-of-light arbitration can be achieved, and full information is available to all nodes in arbitration.

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Source: https://tomesphere.com/paper/1703.05472