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Minutes for the 1st T05 development meeting
Article
by E.B. - Updated June 7th, 2007

Present: Fred, Chiara, Gregory, Mireille, Emmanuel.

It is noted that all the participants will be available at least 2/3 of the time until September 1st. In the current development calendar 3 important deadlines have been (pre-) defined:
-  July 1st for the pipeline model
-  September 1st for the first useable proto-prototype
-  December 1st for the start of T05 processing.

Tasks that were decided for the month of June:

Job handling

-  Installation, basic configuration , right managements, and evaluation of the data transfer performance of Condor will be done by Fred. Deadline: July 1st. Once the installation has proven to work efficiently, Fred will begin migrating a subset of the cluster to a more recent version of Gentoo (not before July).

Database Management

-  Although MySQL might exhibit some weaknesses with respect to other databases (like PostgreSQL), we go ahead with MySQL. If some serious problem arises we may switch to another DBMS later.
-  The priority is set for defining

  • a list of entities that should appear in the database (images, catalogs,...)
  • a list of mandatory and useful generic fields which should be stored in the database for the different entities. Mireille and Chiara, plus Emmanuel, Fred and Gregory will write down a list, with for each field a tagname, a format (string, double, etc.), a unit, and some explanatory comment. Emmanuel will add a UCD to each field. Deadline: June 20th.
    -  Fred and Gregory will investigate what would be the most appropriate tool for building the Data Model. Suggestions: DIA, DBDesigner. Deadline: June 20th. Fred, Gregory and Emmanuel will also investigate what would be the best language and framework for interfacing Condor, the database, the metadata and the user interface. Suggestions: Python, Django. Deadline: July 1st. A first simple inheritance scheme shall be more or less in shape for July 1st (this concerns everyone).

Ingestion diagnostic tools

-  Those will be discussed / built in July.

Development policy

-  A subversion repository shall be set up for July 1st. It will be important to keep all pipeline code in small modules to facilitate maintenance and readability.

Next meeting: June 20th, afternoon


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