UPC++ Programmer’s Guide, v1.0-2018.9.0
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UPC++ Programmer’s Guide, v1.0-2018.9.0

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https://doi.org/10.25344/S49G6V
Abstract

This document has been superseded by: UPC++ Programmer’s Guide, v1.0-2019.3.0 (LBNL-2001191) https://doi.org/10.25344/S4F301 UPC++ is a C++11 library that provides Partitioned Global Address Space (PGAS) programming. It is designed for writing parallel programs that run efficiently and scale well on distributed-memory parallel computers. The PGAS model is single program, multiple-data (SPMD), with each separate constituent process having access to local memory as it would in C++. However, PGAS also provides access to a global address space, which is allocated in shared segments that are distributed over the processes. UPC++ provides numerous methods for accessing and using global memory. In UPC++, all operations that access remote memory are explicit, which encourages programmers to be aware of the cost of communication and data movement. Moreover, all remote-memory access operations are by default asynchronous, to enable programmers to write code that scales well even on hundreds of thousands of cores.

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