slides from R. Jones

1. slides from R. Jones setting up an OSG VO for GlueX

2. OSG: Open Science Grid • A collection of Virtual Organizations (VO’s) devoted to scientific research that share computation and storage resources within a common grid architecture. from http://www.opensciencegrid.org: “The Open Science Grid aims to promote discovery and collaboration in data-intensive research by providing a computing facility and services that integrate distributed, reliable and shared resources to support computation at all scales.”

3. Partial list of existing VO’s • ALICE: ALICE collaboration, High Energy Physics experiment at CERN LHC • ATLAS: United States ATLAS Collaboration • CDF: Collider Detector at Fermilab • CIGI: CyberInfrastructure and Geospatial Information Laboratory • CMS: Compact Muon Solenoid • CompBioGrid: CompBioGrid • DES: Dark Energy Survey • DOSAR: Distributed Organization for Scientific and Academic Research • DZero: D0 Experiment at Fermilab • Engage: Engagement • Fermilab: Fermi National Accelerator Laboratory • FermilabAccelerator: Fermilab/Accelerator • FermilabAstro: Fermilab/Astro • FermilabCdms: Fermilab/Cdms • FermilabGrid: fermilab VO grid group • FermilabHypercp: Fermilab/Hypercp • FermilabKTeV: Fermilab/KTeV • FermilabMinerva: Fermilab/Minerva • FermilabMiniboone: Fermilab/Miniboone • FermilabMinos: Fermilab/Minos • FermilabMipp: Fermilab/Mipp • FermilabMu2e: Fermilab/Mu2e • FermilabNova: Fermilab/Nova • FermilabNumi: Fermilab/Numi • FermilabPatriot: Fermilab/Patriot • FermilabTest: Fermilab/Test • FermilabTheory: Fermilab/Theory • geant4: Geant4 Software Toolkit • GLOW: Grid Laboratory of Wisconsin • GPN: Great Plains Network • GRASE: Group Researching Advances in Software Engineering at University of New York at Buffalo • GROW: Grid Research and Education Group at Iowa • i2u2: Interactions in Understanding the Universe Initiative • IceCube: IceCube Neutrino Telescope • ILC: International Linear Collider • JDEM: Joint Dark Energy Mission, Science Operations Center • LIGO: Laser Interferometer Gravitational-Wave Observatory • mariachi: Mixed Apparatus for Radar Investigation of Cosmic-rays of High Ionization Experiment • MIS: OSG Monitoring Information System • nanoHUB: nanoHUB Network for Computational Nanotechnology (NCN) • NEBioGrid: New England Biomedical Grid • NWICG: Northwest Indiana Computational Grid • NYSGRID: NYSGRID • Ops: WLCG Operations Group • OSG: Open Science Grid • OSGEDU: OSG Education Activity • SBGrid: Structural Biology Grid • STAR: Solenoidal Tracker at RHIC

4. Why are we interested? • Key component of the Collaborative Analysis Toolkit grant (NSF/PIF-2006) from the proposal: . . . this project would fund the development of an analysis suite, built on the backbone of the Open Science Grid, that would allow transparent analysis of current and future experimental data. The collaboration among scientists that will be facilitated by this development will ultimately lead to a better understanding of QCD.

5. but there are other reasons… Why don’t we share – everyone wins!

6. Bringing Gluex into the OSG • what is involved in making a new VO? • A Charter statement describing the purpose of the VO. • A VO Membership Service which meets the requirements of an OSG Release. • A support organization (called a Support Center in OSG parlance) that will support the VO in OSG Operations. • Completion of the registration form using these instructions.

7. 1. Gluex VO: Charter statement • “This should be concise, yet long enough to scope intended usage of OSG resources.” example statement for ALICE: The ALICE Collaboration is building a dedicated heavy-ion detector to exploit the unique physics potential of nucleus-nucleus interactions at LHC energies. Our aim is to study the physics of strongly interacting matter at extreme energy densities, where the formation of a new phase of matter, the quark-gluon plasma, is expected. The existence of such a phase and its properties are key issues in QCD for the understanding of confinement and of chiral-symmetry restoration. For this purpose, we intend to carry out a comprehensive study of the hadrons, electrons, muons and photons produced in the collision of heavy nuclei. Alice will also study proton-proton collisions both as a comparison with lead-lead collisions and in physics areas where Alice is competitive with other LHC experiments. 

8. 1. Gluex VO: Charter statement • RJ’s draft for Gluex, modeled after US-ATLAS: The GlueX Collaboration is building a 12 GeV photon beam line and a dedicated spectrometer to study fundamental issues in strong QCD through meson photoproduction at Jefferson Laboratory. Our primary aim is to identify gluonic resonances by detecting their decays into exclusive final states in a hermetic detector with high acceptance and good resolution for both charged and neutral particles. Unambiguous discovery of a multiplet of hybrid mesons will provide answers to long-standing questions regarding how gluonic degrees of freedom are expressed in hadrons. Other related issues in hadronic physics within the scope of GlueX include chiral symmetry-breaking in the pseudo-scalar nonet, rare neutral meson decays, quark hadronization in nuclear matter, and nucleon structure through inverse-DVCS.

9. 2. Gluex VO: a VO membership service • “This means being able to provide a full list of members' DNs. The currently recommended way to do this is to deploy the VOMS package from the OSG software package.” • VOMS is just one package from a list of web services that are part of the grid “middleware” infrastructure for supporting a VO. • a lot of work – happily, most of this has to be done only once (by me)

10. 2. OSG infrastructure: a lot of stuff This is your site This is at UConn VOMS VOMRS users register admins grant access

11. 2. OSG infrastructure: a lot of work • Setting up the VO (first time) – a couple of weeks • Setting up a site (first time) – a couple of days • Becoming a user (first time) – a couple of hours • It looks like once the tools are set up, it will be relatively painless to administer – decentralized authorization management based on groups, roles. experience will tell, but VO admin  Representative  Site admin  LRP where  means “can delegate authorization to”

12. 2. Gluex VOMS: current configuration • Institutions defined so far: Carnegie Mellon University Catholic University of America Christopher Newport University Florida International University Florida State University Indiana University Jefferson Lab North Carolina A&T Santa Maria University University of Athens University of Connecticut University of Massachusetts University of North Carolina Wilmington University of Regina

13. 2. Gluex VOMS: what’s next • One person from each institution must agree to serve as VO representative for that group. • Go to http://www.doegrids.org/pages/cert-request.htmland fill out the form to request a personal grid certificate. [Non-US institutions may decide to use the equivalent certificate provider from their home country.] • Under “sponsor” I listed Jefferson Lab, with Elton as my contact. [I know it says, list your VO as your sponsor, except that I need a list of users with certificates before I can complete the VO application process for Gluex !] • Wait for a day or so, and they will email you back with instructions for how to fetch your grid certificate. Install it in your browser under “client certificates” and keep a copy in a safe place. Without this, you will only be able to access the Gluex VO facilities as a guest.

14. 2. Gluex VOMS: what’s next • Once your institution has an authorized VO rep, that person will be responsible for granting membership to all of the other members from that institution. • Resource access is controlled locally at each site, based on what they want to grant. Permission is granted based on the map • Mapping is configured using web gui tools by the site administrator for each site. [user, group, role]  resources

15. 2. Gluex VOMS: what’s next • Only the site reps need to request certificates at this point. • Once site reps are registered, I will submit the formal request for admission as a OSG VO. Only the UConn cluster resources will be configured for OSG access at that point – enough to get started. • Groups and roles defined so far are: • Eg. /Gluex/software/Role=admin  admin of /Gluex/software groups /Gluex – all VO registered people are members /Gluex/cat-pwa – CAT project people, restricted /Gluex/software – software developers, open /Gluex/simulation – simulation producers, open /Gluex/production – analysis producers, open roles admin – grants access to group, if restricted

16. 3. Gluex VO: a support organization • “A support organization (called a Support Center in OSG parlance) that will support the VO in OSG Operations. The Support Center should provide at least the following: • a written description of the registration process,  • instructions for the members of the VO on how to complete the VO registration process,  • instructions for the members of the VO on how to report problems and/or obtain help. • Notice to site reps: I will be seeking help from you in writing these help pages, based on your experience as you complete the registration. • Ongoing support organization is at UConn for next 2 years – included in duties of CAT project postdoc.

17. 4. Gluex VO: complete registration • “Completion of the registration form using these instructions.” • Will happen as soon as a core set of site administrators are registered, demonstrating that we have the critical mass to justify setting up a new VO. • Resource questions will follow later. For the moment, it is people and institutional interest that is needed to get the VO in place.

18. Yet to come: client package • allows you to • submit and track compute jobs • store data files to the grid • search grid storage for data files and retrieve them • monitor resource availability • all using standard tools you already know • condor-g, grid-ftp, globus-url-copy, srm, … • your web browser