@article {27917,
	title = {On the impact of heterogeneity-aware mesh partitioning and non-contributing computation removal on parallel reservoir simulations},
	journal = {Journal of Mathematics in Industry},
	volume = {11},
	year = {2021},
	month = {06/2021},
	publisher = { Springer},
	abstract = {Parallel computations have become standard practice for simulating the complicated multi-phase flow in a petroleum reservoir. Increasingly sophisticated numerical techniques have been developed in this context. During the chase of algorithmic superiority, however, there is a risk of forgetting the ultimate goal, namely, to efficiently simulate real-world reservoirs on realistic parallel hardware platforms. In this paper, we quantitatively analyse the negative performance impact caused by non-contributing computations that are associated with the {\textquotedblleft}ghost computational cells{\textquotedblright} per subdomain, which is an insufficiently studied subject in parallel reservoir simulation. We also show how these non-contributing computations can be avoided by reordering the computational cells of each subdomain, such that the ghost cells are grouped together. Moreover, we propose a new graph-edge weighting scheme that can improve the mesh partitioning quality, aiming at a balance between handling the heterogeneity of geological properties and restricting the communication overhead. To put the study in a realistic setting, we enhance the open-source Flow simulator from the OPM framework, and provide comparisons with industrial-standard simulators for real-world reservoir models.},
	doi = {10.1186/s13362-021-00108-5},
	url = {https://mathematicsinindustry.springeropen.com/articles/10.1186/s13362-021-00108-5},
	author = {Thune, Andreas and Cai, Xing and Alf Birger {Rustad}}
}
@article {27942,
	title = {The Open Porous Media Flow reservoir simulator},
	journal = {Computers \& Mathematics with Applications},
	volume = {81},
	year = {2021},
	month = {06/2020},
	pages = {159 - 185},
	publisher = {Elsevier},
	abstract = {The Open Porous Media (OPM) initiative is a community effort that encourages open\&nbsp;innovation and reproducible research for simulation of porous media processes. OPM\&nbsp;coordinates collaborative software development, maintains and distributes open-source\&nbsp;software and open data sets, and seeks to ensure that these are available under a free\&nbsp;license in a long-term perspective.In this paper, we present OPM Flow, which is a reservoir simulator developed for\&nbsp;industrial use, as well as some of the individual components used to make OPM Flow.\&nbsp;The descriptions apply to the 2019.10 release of OPM.},
	issn = {08981221},
	doi = {10.1016/j.camwa.2020.05.014},
	author = {Atgeirr Fl{\o} {Rasmussen} and Tor Harald {Sandve} and Bao, Kai and Lauser, Andreas and Hove, Joakim and Skaflestad, B{\r a}rd and Kl{\"o}fkorn, Robert and Blatt, Markus and Alf Birger {Rustad} and S{\ae}vareid, Ove and Lie, Knut-Andreas and Thune, Andreas}
}
