Overview
- Provides the overview of XcalableMP language project and useful insight of applications to use PGAS models
- Shows the direction of parallel programming languages research for exa-scale era
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About this book
XcalableMP is a directive-based parallel programming language based on Fortran and C, supporting a Partitioned Global Address Space (PGAS) model for distributed memory parallel systems. This open access book presents XcalableMP language from its programming model and basic concept to the experience and performance of applications described in XcalableMP. 
XcalableMP was taken as a parallel programming language project in the FLAGSHIP 2020 project, which was to develop the Japanese flagship supercomputer, Fugaku, for improving the productivity of parallel programing. XcalableMP is now available on Fugaku and its performance is enhanced by the Fugaku interconnect, Tofu-D.
The global-view programming model of XcalableMP, inherited from High-Performance Fortran (HPF), provides an easy and useful solution to parallelize data-parallel programs with directives for distributed global array and work distribution and shadow communication. The local-view programming adopts coarray notation from Coarray Fortran (CAF) to describe explicit communication in a PGAS model. The language specification was designed and proposed by the XcalableMP Specification Working Group organized in the PC Consortium, Japan.
The Omni XcalableMP compiler is a production-level reference implementation of XcalableMP compiler for C and Fortran 2008, developed by RIKEN CCS and the University of Tsukuba. The performance of the XcalableMP program was used in the Fugaku as well as the K computer. A performance study showed that XcalableMP enables a scalable performance comparable to the message passing interface (MPI) version with a clean and easy-to-understand programming style requiring little effort.Similar content being viewed by others
Keywords
Table of contents (10 chapters)
Editors and Affiliations
About the editor
Bibliographic Information
Book Title: XcalableMP PGAS Programming Language
Book Subtitle: From Programming Model to Applications
Editors: Mitsuhisa Sato
DOI: https://doi.org/10.1007/978-981-15-7683-6
Publisher: Springer Singapore
eBook Packages: Computer Science, Computer Science (R0)
Copyright Information: The Editor(s) (if applicable) and The Author(s) 2021
Hardcover ISBN: 978-981-15-7682-9Published: 20 November 2020
Softcover ISBN: 978-981-15-7685-0Published: 20 December 2021
eBook ISBN: 978-981-15-7683-6Published: 19 November 2020
Edition Number: 1
Number of Pages: IX, 262
Number of Illustrations: 310 b/w illustrations, 57 illustrations in colour