Graph sampling and random walk acceleration method and system based on graphics processor

A graphics processor, random walk technology, applied in the field of data processing, can solve problems such as high complexity, reducing overall running time, and long overall running time

Active Publication Date: 2021-06-08
SHANGHAI JIAO TONG UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of existing biased graph sampling, high complexity of random walk system, low accelerator execution efficiency, long overall running time, etc., the present invention proposes a graph sampling and random walk acceleration method an

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  • Graph sampling and random walk acceleration method and system based on graphics processor
  • Graph sampling and random walk acceleration method and system based on graphics processor
  • Graph sampling and random walk acceleration method and system based on graphics processor

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Embodiment Construction

[0021] Such as figure 2 As shown, this embodiment relates to a graph sampling and random walk acceleration method based on a graphics processor. The CPU reads the graph data from the storage medium and converts it into a CSR format and then outputs it to the GPU. The GPU works according to the set Mode: Real-time generation of alias table and sampling; or offline judgment whether there is a pre-generated alias table and sampling, wherein: the initial stage graph structure data is stored in the memory of the graphics processor, and the vertices to be processed are stored in the global task In the queue; in the iterative execution stage, the thread groups in the kernel function independently process the tasks in the global task queue until the global task queue is empty.

[0022] The offline judgment refers to: when there is no pre-generated alias table, the alias table is first generated for the whole image before sampling, otherwise, the existing alias table is used for sampl...

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Abstract

According to the graph sampling and random walk acceleration method and system based on the graphics processor, graph data are read from a storage medium through a CPU, converted into a CSR format and then output to the GPU, and the GPU generates an alias table in real time according to a set working mode and samples the alias table, or off-line judges whether a pre-generated alias table exists or not and sampling. According to the method, the alias method can be executed efficiently and concurrently, and the performance of graph data processing can be remarkably improved on the same hardware platform, including improvement of the sampling throughput and reduction of the overall running time.

Description

technical field [0001] The present invention relates to a technology in the field of data processing, in particular to a graphic processor-based graph sampling and random walk acceleration method and system for artificial intelligence applications. Background technique [0002] Graph sampling and random walk pass certain criteria to select subgraphs of the original graph data. Graph sampling and random walk are commonly used processing techniques for graph data, which can significantly reduce the overhead of processing large graphs while maintaining high accuracy and other indicators in artificial intelligence applications. However, graph sampling and random walk themselves are computationally The process also consumes a lot of time, and its acceleration is conducive to the improvement of overall performance. [0003] Partial graph sampling and random walk refer to the process of randomly selecting the neighbor vertices of a vertex in the graph according to the weight of th...

Claims

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Application Information

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IPC IPC(8): G06F9/48G06F9/50G06T1/20
CPCG06F9/4881G06F9/505G06T1/20G06F2209/5018
Inventor 李超王鹏宇王靖朱浩瑾过敏意
Owner SHANGHAI JIAO TONG UNIV
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