%0 Journal Article %J Supercomputing Frontiers and Innovations %D 2017 %T Design and Implementation of the PULSAR Programming System for Large Scale Computing %A Jakub Kurzak %A Piotr Luszczek %A Ichitaro Yamazaki %A Yves Robert %A Jack Dongarra %X The objective of the PULSAR project was to design a programming model suitable for large scale machines with complex memory hierarchies, and to deliver a prototype implementation of a runtime system supporting that model. PULSAR tackled the challenge by proposing a programming model based on systolic processing and virtualization. The PULSAR programming model is quite simple, with point-to-point channels as the main communication abstraction. The runtime implementation is very lightweight and fully distributed, and provides multithreading, message-passing and multi-GPU offload capabilities. Performance evaluation shows good scalability up to one thousand nodes with one thousand GPU accelerators. %B Supercomputing Frontiers and Innovations %V 4 %G eng %U http://superfri.org/superfri/article/view/121/210 %N 1 %R 10.14529/jsfi170101