JLDG ensembles/configurations

JLDG stores QCD ensembles/configurations publicly available to lattice field theory community. ILDG/JLDG VO (virtual organization) members can access to data in the framework of ILDG (see this page) or via the JLDG file system.

Archived configurations are formatted with the ILDG standard. Ensembles and configurations are marked-up based on the QCDml (latest schema are QCDmlEnsemble2.0.0 and QCDmlConfig2.0.0, respectively.) Follow this link to search ensembles/configurations through faceted navigation, where you can get XML files and list of LFN's (logical file name) of configurations. MC (Markov Chain) URI of ensemble and LFN's are named after simulation parameters. See the web page given for each dataset listed below. (The web page also explains for JLDG users where to find configurations.)

When you publish your research results based on these datasets, please cite the paper specified for each dataset, and if it is appropriate, acknowledge to the collaboration which has provided us with the dataset. The JLDG team would appreciate if you could mention the ILDG or the JLDG. Reference to the ILDG is
G. Beckett et al,, Comp. Phys. Comm. 182 (2011) 1208.
"Building the International Lattice Data Grid",
and to the JLDG,
T. Amagasa et al., J. Phys. Conf. Ser. 664 (2015) no.4, 042058
"Sharing lattice QCD data over a widely distributed file system",

For technical support, please feel free to write to
ildg-support [AT] jldg.org

Datasets

We have seven datasets of QCD ensembles/configurations.

2+1 flavor full QCD configurations by the JLQCD Collaboration.
They were generated at lattice spacing of ~ 0.080 fm and the pion mass of ~ 300 MeV on ~ 2.6 fm lattice with the tree-level Symanzik-improved gauge action and the Möbius domain-wall fermion action with the stout smeared links.
Details of ensembles/configurations are given here.
Provided by the JLQCD Collaboration

B. Colquhoun, S. Hashimoto, T. Kaneko, and J. Koponen (JLQCD Collaboration),
Phys. Rev. D 106, 054502 (2022)

2+1 flavor full QCD configurations by the PACS Collaboration.
They were generated at lattice spacing of ~ 0.0846 fm on ~ 8.1 fm lattice with a fully O(a) improved action -- combining the renormalization-group improved Iwasaki gluon action and a nonperturbatively O(a) improved Wilson-clover quark action with the APE stout smeared links -- and adopting an exact DDHMC+PHMC algorithm.
Details of ensembles/configurations are given here.
Provided by the PACS Collaboration

K.-I. Ishikawa et al. (PACS Collaboration),
PoS LATTICE2015, 075 (2016)

2+1 flavor full QCD configurations by T. Yamazaki et al. for nuclei calculation.
They were generated at lattice spacing of ~ 0.09 fm and the pion mass of ~ 0.5 GeV on from ~ 3 fm to ~ 6 fm lattices with a fully O(a) improved action -- combining the renormalization-group improved Iwasaki gluon action and a nonperturbatively O(a) improved Wilson-clover quark action -- and adopting an exact DDHMC+PHMC algorithm.
Details of ensembles/configurations are given here.
Provided by the PACS-CS Collaboration, Please acknowledge to the following authors of the first paper.

T. Yamazaki, K.-I. Ishikawa, Y. Kuramashi, A. Ukawa,
Phys. Rev. D 86, 074514 (2012)

S. Aoki, et al. (PACS-CS Collaboration),
Phys. Rev. D 79, 034503 (2009)

Two-flavor full QCD configurations contributed by the JLQCD Collaboration.
They are generated with an overlap fermion action and a renormalization-group improved gauge action accompanied by an extra Wilson fermion term to fix the topological charge. The lattice size is 16³x32, corresponding to the physical spatial size of about 1.9 fm. There are six ensembles corresponding to six quark mass which roughly covers (m_s/6, m_s).
Details of ensembles/configurations are given here.
Provided by the JLQCD Collaboration.

S. Aoki et al. (JLQCD Collaboration),
Phys. Rev. D 78, 014508 (2008)

2+1 flavor full QCD configurations by the PACS-CS Collaboration.
They were generated at lattice spacing of ~ 0.09 fm on ~ 3 fm lattice with a fully O(a) improved action -- combining the renormalization-group improved Iwasaki gluon action and a nonperturbatively O(a) improved Wilson-clover quark action -- and adopting an exact DDHMC+PHMC algorithm.
Details of ensembles/configurations are given here.
Provided by the PACS-CS Collaboration.

S. Aoki, et al. (PACS-CS Collaboration),
Phys. Rev. D 79, 034503 (2009)

2+1 flavor full QCD configurations by the CP-PACS and JLQCD Collaborations.
They were generated at three lattice spacings with a fully O(a) improved action -- combining the renormalization-group improved Iwasaki gluon action and a nonperturbatively O(a) improved Wilson-clover quark action -- and adopting an exact HMC+PHMC algorithm.
Details of ensembles/configurations are given here.
Provided by the CP-PACS/JLQCD Collaborations.

T. Ishikawa, et al. (CP-PACS/JLQCD Collaborations),
Phys. Rev. D 78, 011502(R) (2008)

Two-flavor full QCD configurations contributed by the CP-PACS Collaboration.
There are three sets of files corresponding to three lattice spacings, all generated with the renormalization-group improved Iwasaki gluon action and the Wilson-clover quark action with tadpole-improved cover coefficient.
Details of ensembles/configurations are given here.
Provided by the CP-PACS Collaboration.

A. Ali Khan et al. (CP-PACS Collaboration),
Phys. Rev. D 65, 054505 (2002) [Erratum: Phys. Rev. D 67, 059901 (2003)]

Last update: 12 February 2026, H. Ohno