2024-05-20【论文阅读】FlexGraph: A Flexible and Efficient Distributed Framework for GNN Training阅读思考问题:PleasebrieflydescribehowhierarchicaldependencygraphsarebuiltinFlexGraph,andpointoutthespecificstageintheNAUabstractionwherethisprocesstakesplace.请简要描述在FlexGraph中如何构建分层依赖图,并指出在NAU抽象中的具体阶段发生此