A generic node identification and routing algorithm in a distributed data acquisition platform: D-Matrix

Abstract

Data acquisition (DAQ) systems are vital components in large-scale physics experiments. For communication, control and tracking purposes, all system components must be unambiguously identified. D-Matrix, as a generic distributed stream processing DAQ platform, accommodates various device connection methods, including networking, PCIe bus, point-to-point optical fiber links, etc. Although there are mature node identification solutions for each connection method individually, the uniform solution applicable to all connection methods remains crucial in a generic DAQ platform. D-Matrix abstracts a unified Multiple Point-to-Point transmission model (MPP model), supporting various physical connection methods and enabling multiple communication channels on a single physical link. Referring to the tree universal address system, a generic automatic node identification algorithm is proposed based on the MPP model. With simple configuration, this algorithm enables automatic node traversal, yielding a routing-based identification result that supports clustering and hierarchical node management requirements common in large-scale physics experiments. This paper explains the details of the algorithm and presents an example of the DAQ system based on the algorithm.