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TeraGrid Arch Meeting RP Update: ORNL

TeraGrid Arch Meeting RP Update: ORNL. April 23, 2009 (Dev Patel’s 19 th Birthday & 24 th Anniversary of Sam Ervin’s death) John W. Cobb. Outline. Neutron Science TeraGrid Gateway Activities NSTG Cluster Operations SNS Status SNS Data Storage Experience Other Collaborations

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TeraGrid Arch Meeting RP Update: ORNL

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  1. TeraGrid Arch MeetingRP Update: ORNL April 23, 2009 (Dev Patel’s 19th Birthday & 24th Anniversary of Sam Ervin’s death) John W. Cobb

  2. Outline • Neutron Science TeraGrid Gateway Activities • NSTG Cluster Operations • SNS Status • SNS Data Storage Experience • Other Collaborations • SULI Student Speirs result: SNS replication to LCF-HPSS • Mantra: Move the data! Support the experiment! connect to the national CI!

  3. Neutron Science TeraGrid Gateway Activities 1/2 • McStas instrument simulations available from portal and routinely tested for reliability and usability. • One user (Percival) using McStas from his login user area to design next generation engineering diffractometer • Fitting service moving toward deployment (slowly). Interest from reflectometer group. • SULI Summer student to look at Bayesian fitting for reflectometers as well. • There continues to be interest for TeraGrid based dat reduction which would entail a much larger SU need. • Portal based usage: 5X increase year over year. Seen more in jobs than SU’s at this point.

  4. Neutron Science TeraGrid Gateway Activities 2/2 • Support of Science Gateway AA: • Plan discussed and initially developed • Will require rework of Neutron Science job orchestration engine (the proto Application Manager) • Doable • Not trivial • In the plan to be accomplished before 9/09

  5. NSTG Cluster Operations • GridFTP upgraded to Sci. Lin. Stability improved • 2 nodes taken out of production to build supported CTSS kits on compute nodes – progressing (thanks to much help from SW-WG) • ORNL and NICS Router conversion scheduled later this month.

  6. SNS Status 1/2 • http://neutrons.ornl.gov/portal/ (SNS with NSTG) • Ongoing instrument run times (SNS and HFIR) • New instruments in commissioning, joining user program (Beamline: Name) • 2 Backscattering Spectrometer (BASIS) • 3 * Spallation Neutrons and Pressure Diffractometer (SNAP) • 4 A Magnetism Reflectometer (MR) • 4 B Liquids Reflectometer (LR) • 5 *Cold Neutron Chopper Spectrometer (CNCS) • 18 * Wide Angular-Range Chopper Spectrometer (ARCS) • Instruments in Commissioning (shutters opened) • 6 Extended Q-Range Small-Angle Neutron Scattering Diffractometer (EQ-SANS) • 11A Powder Diffractometer (POWGEN) • 17 Fine-Resolution Fermi Chopper Spectrometer (SEQUOIA) • More in the pipeline (10 more at last count) –

  7. SNS Status 2/2 • Accelerator Beam power and uptime increasing • http://neutrons.ornl.gov/diagnostics/channel13/ch14.html • Max power: ~ 850 kw (every increase is a new worldrecord) • Approaching 1.4 MW nominal • Approaching 20 MWhr/day of beam power

  8. Data Storage Experience

  9. Other Collaborations - ESG • Home Sites: http://www.earthsystemgrid.org/ • Preparing fro next round of IPCC runs • Much more simulation and much, muchmore data • ORNL ESG present includes an ESG test node in ORNL TG enclave • ORNL ESG test node being installed. SW stack mostly complete • Will (may) be used to test ESG data trasnport over TG network from ORNl to NCAR • Installing perfsonar to test ESG and ESNet network performance

  10. Other Collaborations - REDDnet • Led from Vanderbilt: http://www.reddnet.org/ • Idea: Wide area, high performance data movement • NSTG interest: Assist with moving data to/from neutron facilities and to/from users via TG • Build on IBP “Xnodes” as a “wide area inode” analog. • Data Transfer tool across TG boundary • TG testing via 3 TG sties with REDDnet footprint (ORNL, SDSC, TACC) • Support user space file systems • REDDnet will present a tutorial at TG09 - Check it out.

  11. Other Collaborations - Sinergie • Project to Study diffuse scattering in single crystal experiments (X-ray and Neutron). Funded by Swiss NSF. Team: • ETH: H.B. Burgi, K. Baldridge, PostDoc • ORNL-SNS: C. Hoffman, S. Miller, P. Peterson • ORNL TG: V. E. Lynch, J. W. Cobb • MTSU: T. Koritansky, PostDoc • Others (Mikkelsons, UW-stout, Correlli inst. Design team, …) • Scope: • Define computational tools for structure determination for diffuse scattering • Alternating bond lengths, • Correlated defects, • Lattice location substitution • Distinguishing from background • Developing scalable parallel fitting codes (GA’s perhaps) • Apply to X-rays and Neutrons • Use refinement by studying similar samples in X-Rays AND neutrons • Status: funded: Kickoff meeting (Oak Ridge or Zurich) in June

  12. Other Collaborations - DataOne • Proposal to NSF under DataNet program • Led from UNM • NSF Action at Dec. 2008 meeting • A CA/CSA has not been issued • DataONE Management Advisory Team has been active in a “pre-award” mode including going ahead with planning and required training (It- PM Training, …) • Hopefully more to come if/when a CA/CSA is awarded.

  13. SNS Data Replication to LCF-HPSS (Speirs SULI Semester Effort)

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