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arXiv 2609.24497cs.ROcs.AR

ScaleMPA:通过网格原生表示重新思考可扩展的RRT*加速

ScaleMPA: Rethinking Scalable RRT* Acceleration With a Grid-Native Representation

Zilong Wang, Yuzhou Chen, Xinyue He, Chen Zhang, Guanghui He

AI总结:

ScaleMPA是一种基于网格原生表示的运动规划加速器,通过直接网格访问和多分辨率哈希网格,在28nm CMOS上实现毫秒级延迟,较最先进加速器提速4.7-44.4倍。

AI中文摘要:

在大型和高维环境中,实时运动规划仍然具有挑战性。先前的RRT*加速采用以树为中心的状态组织,这降低了每次查询的成本,但保留了超线性的端到端复杂度,并通过结构依赖限制了并行性。本文提出了ScaleMPA,一种运动规划加速器,它通过网格原生表示重新思考RRT*。通过用直接的基于网格的访问取代层次遍历,ScaleMPA缩短了规划器的关键路径,并暴露了细粒度的并行性。为了使这种重构在稀疏的高维规划中切实可行,ScaleMPA进一步提出了一种多分辨率网格搜索引擎和哈希网格内存系统。在28纳米CMOS工艺中实现,ScaleMPA实现了毫秒级的规划延迟,并比最先进的运动规划加速器提供了4.7倍至44.4倍的加速。

英文摘要:

Real-time motion planning remains challenging in large and high-dimensional environments. Prior acceleration of RRT* follows tree-centric state organization, which reduces per-query cost but preserves superlinear end-to-end complexity and limits parallelism through structural dependencies. This paper presents ScaleMPA, a motion-planning accelerator that rethinks RRT* with a grid-native representation. By replacing hierarchical traversal with direct grid-based access, ScaleMPA reduces the planner critical path and exposes fine-grained parallelism. To make this reformulation practical under sparse high-dimensional planning, ScaleMPA further proposes a multi-resolution grid search engine and a hash-grid memory system. Implemented in 28 nm CMOS, ScaleMPA achieves millisecond-level planning latency and delivers 4.7$\times$--44.4$\times$ speedup over state-of-the-art motion-planning accelerators.

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