Lyncs-API: a Python API for Lattice QCD applications

Bacchio, Simone; Finkenrath, Jacob; Stylianou, Christodoulos

doi:10.22323/1.396.0542

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…Twisted mass gauge ensembles at physical values of the quark masses how this potentially could be adapted within a lattice QCD python API [32], which is currently under development.…”

Section: Pos(lattice2021)284mentioning

confidence: 99%

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Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Finkenrath¹,

Alexandrou²,

Bacchio³

et al. 2022

Proceedings of the 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)

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Lattice QCD simulations directly at physical masses of dynamical light, strange and charm quarks are highly desirable especially to remove systematic errors due to chiral extrapolations. However such simulations are still challenging. We discuss the adaption of efficient algorithms, like multigrid methods or higher order integrators, within the molecular dynamic steps of the Hybrid Monte Carlo algorithm, that are enabling simulations of a new set of gauge ensembles by the Extended Twisted Mass collaboration (ETMC). We present the status of the on-going ETMC simulation effort that aims to enabling studies of finite size and discretization effects. We work within the twisted mass discretization which is free of odd-discretization effects at maximal twist and present our tuning procedure.

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“…Twisted mass gauge ensembles at physical values of the quark masses how this potentially could be adapted within a lattice QCD python API [32], which is currently under development.…”

Section: Pos(lattice2021)284mentioning

confidence: 99%

“…Twisted mass gauge ensembles at physical values of the quark masses Jacob Finkenrath developing a new user-friendly flexible python API lyncs [32]. This will enable HMC simulations on the next generation of high performance systems.…”

Section: Pos(lattice2021)284mentioning

confidence: 99%

Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Finkenrath¹,

Alexandrou²,

Bacchio³

et al. 2022

Proceedings of the 38th International Symposium on Lattice Field Theory — PoS(LATTICE2021)

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“…While performance has been sought for in those applications, portability and productivity have also become important factors. Lyncs-API is a response to those newly emerging trends and tries to achieve those three factors by developing a Python toolkit that allows the user to use and run various lattice QCD libraries while programming in Python [1]. For this purpose, it uses a number of Python packages and aims at implementing Pyhton interfaces to various lattice QCD libraries.…”

Section: Introductionmentioning

confidence: 99%

Running HMC Simulation with Python via QUDA

Yamamoto¹,

Bacchio²,

Finkenrath³

2022

Proceedings of the 39th International Symposium on Lattice Field Theory — PoS(LATTICE2022)

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Lyncs-API is a Python API for Lattice QCD applications. It is designed as a Python toolkit that allows the user to use and run various lattice QCD libraries while programming in Python. The goal is to provide the user an easy programming experience without scarifying performance across multiple platforms, by preparing a common framework for various softwares for lattice QCD calculations. As such, it contains interfaces to, e.g., c-lime, DDalphaAMG, tmLQCD, and QUDA. In this proceeding, we focus on a Lyncs interface to QUDA, named Lyncs-QUDA, and present a small tutorial on how to use this Python interface to perform a HMC simulation using QUDA.

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“…The gauge fixing algorithm we have used for the calculation of the gluon propagator in both the Coulomb and Landau gauges was created by J. Marques [96] for use with the Fastsum Gen-2 ensembles, and was adapted in a minor way to support the Gen-2L ensembles in this work. The ensembles themselves are manipulated using the lyncs.io package [110] which enables the I/O of OpenQCD gauge field data directly in Python.…”

Section: Chapter 5 the Coulomb-gauge Gluon Propagatormentioning

confidence: 99%

Novel approaches to the study of the heavy meson spectrum at finite temperature

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This thesis is structured in three broad sections. The ﬁrst presents a brief intro-duction to the ﬁeld of quantum chromodynamics (QCD) and regularisation methods, which precedes a more thorough description of the lattice ﬁeld theoretic approach to QCD and its non-relativistic formalism, NRQCD, which is used in the analysis contained within this document. The second section introduces the ﬁrst problem of interest, spectral reconstruction in the case of bottomonium mesons. We focus in particular on the Laplacian nature of the problem and present the Backus-Gilbert method as a means of pro-ducing regularised solutions. The resolving power of the method is discussed and the overall approach is then extended with the inclusion of a novel technique known as Laplace shifting, which takes advantage of the structure of the problem to pro-vide a controlled resolution improvement to the method. A study of this technique is presented and applied to results obtained from Fastsum’s anisotropic NRQCD ensembles from which connections with a known phenomenon in Monte-Carlo based physics called Parisi-Lepage statistical scaling are elucidated. The third and ﬁnal section focuses on probing the temperature dependence of the gluon propagator again calculated using the Fastsum Gen-2L ensembles. We begin by showing results for the propagator in the Coulomb gauge, before extending to the Landau gauge where we discuss the necessary modiﬁcations to support the lattice anisotropy.

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Lyncs-API: a Python API for Lattice QCD applications

Cited by 5 publications

References 6 publications

Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Twisted mass gauge ensembles at physical values of the light, strange and charm quark masses

Running HMC Simulation with Python via QUDA

Novel approaches to the study of the heavy meson spectrum at finite temperature

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