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Meeting Minutes - 23/11/04

Minutes for e-SDO Project Meeting
23 November 2004, 2 – 5 pm
Cruciform Bldg Rm B.0.2, UCL

Attendees

Elizabeth Auden (EA) - MSSL
Len Culhane (LC) - MSSL
Yvonne Elsworth (YE) - Birmingham
Andrzej Fludra (AF) - RAL
Simon Martin (SM) - RAL
Mike Thompson (MT) - Sheffield
Lidia van Driel-Gesztelyi (LvDG) - MSSL

Agenda

2:00 - Coffee and biscuits, welcome (Elizabeth)
2:15 – Report on SDO on the Grid progress: review of posters, conferences, technology, new staff (Elizabeth)
2:30 – Discussion of data and algorithm compatibility with EGSO
2:45 – Review of proposed algorithm list, language choices, possible quicklook formats resulting from algorithms (All)
3:30 – Approach to SDO data centre(s) (Elizabeth)
4:00 – Plans for SDO on the Grid talk during 90 minute session at (All)
4:30 - AOB

SDO Progress

1. Posters and conferences

  • Living With a Star workshop, March 23 – 26, Boulder CO
  • UK Solar Physics Meeting, March 29 – April 1, Edinburgh
  • UK e-Science All Hands Meeting, Aug. 31 – Sep. 3, Nottingham
  • NASA Solar and Space Science VO Workshop, Oct. 27-29, Greenbelt MD
  • Action 1: Find out citable reference for posters published in proceedings cd-roms (EA).
  • Action 2: Investigate possibility of e-SDO talk or paper at European solar physics conference in summer 2005 (LvDG)

2. Technology

  • New server at MSSL – Apache, CVS, web server being installed
  • Laptops
  • SDO Wiki – installed, almost ready to go live
  • Action 3: Post corrected agenda and minutes on wiki (EA).

3. New staff

  • RAL appointment: Dr. Simon Martin
  • MSSL appointment: Further interviewing Nov. 29
  • Sheffield and Birmingham posts: interview after new year; start date 1 April
  • Action 4: Send MSSL post description to Yvonne and Mike (EA).

4. Liaison with SDO colleagues in California

  • Richard Bogart of Stanford University with JSOC (Joint Science Operations Center for AIA and HMI)
  • Working with Karen Tian– both will be included in our architecture discussions
  • Interested in installing AstroGrid PAL for data centre backend; also interested in workflow, CEA tool deployment, MySpace
  • Propose to give AstroGrid component demo in January 2005 (computer/ telephone)

EGSO compatibility

1. Data searching

  • SDO data will use VSO (Virtual Solar Observatory) as front end.
  • Since data made visible to VSO is also visible to EGSO due to interoperability between the systems, SDO data should be searchable through the EGSO system.
  • Action 5: Email URL of EGSO demo site to e-SDO group. (SM)

2. Feature recognition algorithms

  • EGSO has developed feature recognition tools through work at the University of Bradford.
  • Solar feature recognition tools include flare, active region, sunspot, and filament recognition.
  • It is currently understood that the EGSO feature recognition tools are not hosted as user tools – are there plans to make them available as user tools in the future? If not, would Bradford be interested in hosting the algorithms as user tools?
  • Action 6: Email URL of Valentina Zharkova’s papers on EGSO feature recognition algorithms to group (EA).

Algorithms

1. List of proposed algorithms

  • List of approximately 10-15 algorithms shall be provided by SDO science advisory team to developers at MSSL, RAL, Sheffield and Birmingham.
  • Mode frequency analysis – Birmingham (primary), Sheffield (secondary)
  • Mode asymmetry analysis – Birmingham (primary), Sheffield (secondary)
  • Subsurface flow analysis - Sheffield
  • Perturbation map generation – Sheffield
  • Local helioseismology inversion workbench - Sheffield
  • Loop recognition - MSSL
  • Magnetic field extrapolation - MSSL
  • Helicity computation - MSSL
  • CME dimming region recognition - RAL
  • DEM computation - RAL
  • Small event detection – RAL
  • Flare recognition – (done by EGSO)
  • Solar rotation profiling (if time permits) - Sheffield
  • Oscillation sources analysis (if time permits) – Birmingham / Sheffield

2. Language choices

  • IDL – VO pros: AstroGrid and COSec are deploying some SolarSoft routines as grid services, existing SolarSoft usage in solar community, first choice for processing FITS files, existing libraries for recent solar missions. VO cons: IDL is a memory hog, cannot current use routines with any GUI components, other languages may be faster
  • Fortran / C - VO pros: fast, in use by astronomy / astrophysics colleagues. VO cons: not much used by solar community
  • Java – VO pros: easy integration with AstroGrid, extensive existing libraries for reading FITS, speed much improved since release of JDK 1.4 a few years ago. VO cons: not much in use by solar community for data analysis tools.
  • Action 7: Develop questionnaire about the evolution of algorithm languages in solar physics (EA, first draft; ALL, final draft).
  • Action 8: Speak to Dominic Zarro (LC) and William Thompson (AF) first, then canvass other experts for opinions on solar language evolution.

3. Quicklook formats

  • Over the coming months, consider possible quicklook formats for SDO data products and / or data products resulting from e-SDO algorithms.
  • Quicklooks may not be necessary for tabular frequency data

SDO Data Centre

1. AstroGrid architecture (presentation)

  • Modules – PAL, Workflow, MySpace, Registry, CEA
  • Focus on PAL (Publisher’s Astrogrid Library)
  • LC has suggested thought process to determine whether the UK needs a heavy data mirror of SDO data (raw / low level / high level data products).
  • ction 9: Email URL of Astrogrid architecture to e-SDO group (EA).

2. PAL installations

  • Ideally, install PAL at Stanford or Lockheed with local access to SDO data.
  • Second choice: install PAL in UK with remote access to SDO data.
  • ossible additional PAL in UK to hold store of quicklook files generated by SDO tools.

SDO on the Grid Talk: UKSM 2005

1. Talk contents

  • SDO science overview – LC (if talk is April 4th)
  • Helioseismology specialist science - YE
  • Atmospheric specialist science – AF (or Richard Harrison)
  • Overview of e-SDO integration with the Grid, schedule and deliverables - EA

2. UKSP meeting coordination

  • Coordinate with other e-Science talks to determine appropriate coverage of Grid overview in e-SDO talk
  • Science advisory team and software development team will meet at UKSP on 4 April 2005
  • Action 10: Find out if Astrogrid (and Silvia Dalla in particular) will be presenting talks; if so, find out timing of talks with respect to e-SDO talk (EA).
  • Action 11: Find out if EGSO will be presenting talks on architecture and feature recognition tools (SM).
  • Action 12: Email Bill Chaplin to see if e-SDO talk has been scheduled; if not, request time on Mon day, 4 April 2005 (EA, with copies to YE).

Next e-SDO Meeting: 4 April 2005 at UKSP in Birmingham (probably an evening meeting) – science advisory team (LC, LvDG, YE, AF, and MT) and software development team (EA, SM, and developers from MSSL, Sheffield and Birmingham).

Summary of Actions

  1. Find out citable reference for posters published in proceedings cd-roms (EA).
  2. Investigate possibility of e-SDO talk or paper at European solar physics conference in summer 2005 (LvDG)
  3. Post corrected agenda and minutes on wiki (EA).
  4. Send MSSL post description to Yvonne and Mike (EA).
  5. Email URL of EGSO demo site to e-SDO group. (SM)
  6. Email URL of Valentina Zharkova’s papers on EGSO feature recognition algorithms to group (EA).
  7. Develop questionnaire about the evolution of algorithm languages in solar physics (EA, first draft; ALL, final draft).
  8. Speak to Dominic (LC) and William Thompson (AF) first, then canvass other experts for opinions on solar language evolution.
  9. Email URL of Astrogrid architecture to e-SDO group (EA).
  10. Find out if Astrogrid (and Silvia Dalla in particular) will be presenting talks; if so, find out timing of talks with respect to e-SDO talk (EA).
  11. Find out if EGSO will be presenting talks on architecture and feature recognition tools (SM).
  12. Email Bill Chaplin to see if e-SDO talk has been scheduled; if not, request time on Mon day, 4 April 2005 (EA, with copies to YE).

-- ElizabethAuden - 17 Jan 2005

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Topic revision: r1 - 2005-01-17 - ElizabethAuden
 
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