ProGNNosis: A Data-driven Model to Predict GNN Computation Time Using Graph Metrics

• URL: http://arxiv.org/abs/2206.08258v1
• Date: Thu, 16 Jun 2022 15:58:14 GMT
• Title: ProGNNosis: A Data-driven Model to Predict GNN Computation Time Using Graph Metrics
• Authors: Axel Wassington and Sergi Abadal
• Abstract summary: We propose ProGNNosis, a data-driven model that can predict the GNN training time of a given GNN model running over a graph of arbitrary characteristics. Our results show that ProGNNosis helps achieve an average speedup of 1.22X over randomly selecting a graph representation.
• Score: 1.6942548626426182
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Graph Neural Networks (GNN) show great promise in problems dealing with graph-structured data. One of the unique points of GNNs is their flexibility to adapt to multiple problems, which not only leads to wide applicability, but also poses important challenges when finding the best model or acceleration technique for a particular problem. An example of such challenges resides in the fact that the accuracy or effectiveness of a GNN model or acceleration technique generally depends on the structure of the underlying graph. In this paper, in an attempt to address the problem of graph-dependent acceleration, we propose ProGNNosis, a data-driven model that can predict the GNN training time of a given GNN model running over a graph of arbitrary characteristics by inspecting the input graph metrics. Such prediction is made based on a regression that was previously trained offline using a diverse synthetic graph dataset. In practice, our method allows making informed decisions on which design to use for a specific problem. In the paper, the methodology to build ProGNNosis is defined and applied for a specific use case, where it helps to decide which graph representation is better. Our results show that ProGNNosis helps achieve an average speedup of 1.22X over randomly selecting a graph representation in multiple widely used GNN models such as GCN, GIN, GAT, or GraphSAGE.

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