SGL: towards a bridging model for heterogeneous hierarchical platforms Online publication date: Sat, 30-Aug-2014
by Chong Li; Gaétan Hains
International Journal of High Performance Computing and Networking (IJHPCN), Vol. 7, No. 2, 2012
Abstract: This paper introduces the Scatter-Gather parallel-programming and parallel execution model in the form of a simple imperative Scatter-Gather Language (SGL). Its design is based on past experience with bulk-synchronous parallel (BSP) programming and BSP language design. SGL's novel features are motivated by the last decade's move towards multi-level and heterogeneous parallel architectures involving multi-core processors, graphics accelerators and hierarchical routing networks in the largest multiprocessing systems. The design of SGL is coherent with L. Valiant's multi-BSP while offering a programming interface that is even simpler than the primitives of bulk-synchronous parallel ML (BSML). SGL appears to cover a large subset of all BSP algorithms while avoiding complex message-passing programming. Like all BSP-inspired systems, it supports predictable, portable and scalable performance. Moreover, SGL's explicit data distribution will allow automatic or programmable load-balancing.
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