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|Title||Design and Implementation of the PULSAR Programming System for Large Scale Computing|
|Publication Type||Journal Article|
|Year of Publication||2017|
|Authors||Kurzak, J., P. Luszczek, I. Yamazaki, Y. Robert, and J. Dongarra|
|Journal||Supercomputing Frontiers and Innovations|
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.