C++ Modules in ROOT and Beyond
Abstract
C++ Modules come in C++20 to fix the long-standing build scalability problems in the language. They provide an io-efficient, on-disk representation capable to reduce build times and peak memory usage. ROOT employs the C++ modules technology further in the ROOT dictionary system to improve its performance and reduce the memory footprint. ROOT with C++ Modules was released as a technology preview in fall 2018, after intensive development during the last few years. The current state is ready for production, however, there is still room for performance optimizations. In this talk, we show the roadmap for making the technology default in ROOT. We demonstrate a global module indexing optimization which allows reducing the memory footprint dramatically for many workflows. We will report user feedback on the migration to ROOT with C++ Modules.
Cite
@article{arxiv.2004.06507,
title = {C++ Modules in ROOT and Beyond},
author = {Vassil Vassilev and David Lange and Malik Shahzad Muzaffar and Mircho Rodozov and Oksana Shadura and Alexander Penev},
journal= {arXiv preprint arXiv:2004.06507},
year = {2021}
}
Comments
Submitted as a proceedings to CHEP 2019