sharing lattices throughout the world: an ildg status report ildg july 31, 2007
Post on 21-Dec-2015
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A consortium of regional grids
• Australia (CSSM)
• Europe (LatFOR)
(Austria, Switzerland, Germany, France, Italy)
• Japan (JLDG)
• UK (DiGS/QCDgrid)
• US (Gauge Connection + FNAL + BNL + JLab)
Purpose
• Facilitate the world-wide sharing of files
(currently gauge configurations) to speed scientific discovery.
• For some, a convenient collaboration repository, as well.
Spectrum of Access Policies
• All lattices available as soon as they are generated – (some collaborations)
• Recent lattices available after negotiation. (most collaborations)
• All lattices available ~ six months after the first publication (universal)
• Citation and acknowledgment (universal)• Trend is toward increasing accessibility
Files
• QCDml document for each ensemble
• Lattice binary for each configuration– LIME format – reasonably flexible
• QCDml document for each configuration
Standard Mode of Access
• Browse (search) the ensemble metadata to select the desired ensemble
• List the desired lattices
• Download the lattice files– Involves grid certificates for authentication
• See live demonstration– Dirk Pleiter poster session.
ILDG Working Groups
• Metadata working group– Standards for QCDml (XML) markup schema
to annotate the files. (Also binary file format.)– See T. Yoshie’s poster.
• Middleware working group– Standards for file transfers (catalogs, grid tools,
etc.)
Highlights of What is Available
• Apologies. My own biased selection based on a cursory inquiry.
• Just an overview. No attempt at exhaustive detail.
• I will try to point out what has been opened to general access in the past year.
Australia/CSSM available/planned
Flavorsfermion/gluon action
Collaboration a(fm)approx#configs
Availability
0 Tadpole LW Adelaide 0.128 400Available
2FLIC’/Tadpole LW
Adelaide 0.125 400 x ?In production
LatFor available/planned
Flavorsfermion/gluon action
Collaboration a (fm)approx#configs
Availability
2NP-clover/Wilson plaq
QCDSF 0.07/0.11 5000x16 Negotiable
2tmQCD/tlSym
ETMC 0.07/0.11 3500x15 Negotiable
2+1 stout/Tadpole LW
QCDSF 0.08 ? In progress
2+1+1Stouted tmQCD/tlSym ETMC
?? ? Planned
JLDG available/planned
flavorsfermion/gluon action
collaboration a(fm)approx#configs
availability
2Wilson-clover/Iwasaki
CP-PACS
0.20 1000x4
available0.15 1000x4
0.10 800x4
2Wilson-clover/Plaquette
JLQCD 0.10 1200x5 in preparation
2+1Wilson-clover/Iwasaki
CP-PACS+JLQCD
0.12 800x5x2
available(New)
0.10 800x5x2
0.07 600x5x2
2overlap/Iwasaki
JLQCD 0.12 O(500)x6after 1st paper on spectrum
UK/DiGS/BNL available/planned
Flavorsfermion/gluon action
Collaboration a(fm)approx#configs
Availability
2+1DWF/Iwasaki
UKQCD/RBC 0.12 800x4 Available
2+1 DWF/DBW2
UKQCD/RBC 0.12300-1000
Available
2DWF/DBW2
UKQCD/RBC 0.12 1000x3 Available
2+1 Asqtad/Tadpole LW
UKQCD 0.12 3000 Available
2+1DWF/Iwasaki
UKQCD/RBC 0.09 ?? Restricted
2+1DWF/Iwasaki
UKQCD/RBC 0.09 ?? X 2 In production
US/NERSC/FNAL/JLab available/planned
Flavorsfermion/gluon action
Collaboration a(fm)approx#configs
Availability
2+1Asqtad/tadpole LW
MILC 0.15 600 x 4 Available
2+1Asqtad/tadpole LW
MILC0.12 600 x 5 Available*
2+1 Asqtad/tadpole LW
MILC0.09
500 x 2 500 x 1
NewAvailable*
2+1Asqtad/tadpole LW
MILC 0.06 500 x 2In productionAvailable
2+1Anisotropic clover/??
LHPC 0.125 ?? X 4 Planned
2+1Anisotropic clover/??
LHPC 0.10 ?? X 4 Planned
2+1Anisotropic clover/??
LHPC 0.08 ?? X 4 Planned
*Extensions underway
Conclusions
• The ILDG is up and working (mostly)
• See the ILDG demonstration during the poster session