Lattice gauge ensembles and data management

Abstract

Lattice gauge ensembles and data managementGunnar Bali et al.data consumer follows good scientific practice and properly acknowledges the source of the data and gives credit to the data providers.• In a community-wide context, the data providers can make their valuable data available on some storage infrastructure at no extra cost in terms of human or hardware resources. Declaring data "public" will make these known to other researchers who will frequently use these in other projects, so that the data providers receive recognition and citations.In the real world, where many of those responsible for generating, storing and managing the data are on temporary positions and where large, globally accessible, long-term storage is not for free, the situation is more challenging.In this contribution, we collect the present status of ensemble generation to inform both data consumers and providers about the availability of gauge ensembles and present practices. We restrict ourselves to simulations of QCD. At present, these are mostly carried out using 𝑁 𝑓 = 2 + 1, 𝑁 𝑓 = 2 + 1 + 1 and also 𝑁 𝑓 = 1 + 1 + 1 + 1 sea quark flavours 𝑞 = 𝑢, 𝑑, 𝑠, 𝑐, with various fermion discretizations. Naturally, we can only cover simulations by the groups who responded to the call. The next section provides the current status. This is followed by a brief summary.

The International Lattice Data Grid (ILDG 2.0)

“…A first Hands-on Workshop was held (online) in June 2023 and mainly targeted to those collaborations which during the parallel session on "Lattice Data" [5] at the Lattice 2022 conference expressed interest in using ILDG. The workshop was attended by a remarkable number of participants (37) from 12 collaborations.…”

Progress in generating gauge ensembles with Stabilized Wilson Fermions

“…Part of the OpenLat goals is to generate state-of-the-art QCD gauge ensembles for physics applications and share them with the community, compatible with the ILDG standard, see e.g. [15,17] and https://hpc.desy.de/ildg/, without embargo time after publication, or before publication on a case-by-case basis. As such, an important component of our effort is for the data to adhere to…”

“…In this article we sidestep further explanations of the lattice details and refer to [1,2,6,15] PoS(LATTICE2023)048 for more in-depth discussion. The main updates reported on here are: Firstly, an update on the generation status and where we are in our production plan.…”