Papers

Topics

Authors

Recent

View all

Detailed Answer

Quick Answer

Concise responses based on abstracts only

Detailed Answer

Well-researched responses based on abstracts and relevant paper content.

Custom Instructions Pro

Preferences or requirements that you'd like Emergent Mind to consider when generating responses

Gemini 2.5 Flash

Gemini 2.5 Flash 47 tok/s

Gemini 2.5 Pro 37 tok/s Pro

GPT-5 Medium 15 tok/s Pro

GPT-5 High 11 tok/s Pro

GPT-4o 101 tok/s Pro

Kimi K2 195 tok/s Pro

GPT OSS 120B 465 tok/s Pro

Claude Sonnet 4 30 tok/s Pro

2000 character limit reached

A Newcomer In The PGAS World -- UPC++ vs UPC: A Comparative Study (2102.03614v1)

Published 6 Feb 2021 in cs.DC, cs.PF, and cs.PL

Abstract: A newcomer in the Partitioned Global Address Space (PGAS) 'world' has arrived in its version 1.0: Unified Parallel C++ (UPC++). UPC++ targets distributed data structures where communication is irregular or fine-grained. The key abstractions are global pointers, asynchronous programming via RPC, futures and promises. UPC++ API for moving non-contiguous data and handling memories with different optimal access methods resemble those used in modern C++. In this study we provide two kernels implemented in UPC++: a sparse-matrix vector multiplication (SpMV) as part of a Partial-Differential Equation solver, and an implementation of the Heat Equation on a 2D-domain. Code listings of these two kernels are available in the article in order to show the differences in programming style between UPC and UPC++. We provide a performance comparison between UPC and UPC++ using single-node, multi-node hardware and many-core hardware (Intel Xeon Phi Knight's Landing).