XcalableMP PGAS Programming Language: From Programming Model to Applications


XcalableMP PGAS Programming Language 语言: From Programming Model to Applications
by 作者: Mitsuhisa Sato
pages 页数: 271 pages
ISBN-10 书号: 9811576823
ISBN-13 书号: 9789811576829
Publisher Finelybook 出版社: ; 1st ed. 2021 edition (November 20,2020)
Language 语言: English


Book Description
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 作者: 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 作者: 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 作者: 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.

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