Workshops :: TBB DAQ Busy Week (30 Mar - 03 Apr 2009, ASTRON, Dwingeloo)
Invitation
The new date for the TBB data acquisition busy week is: Monday 30. March – Friday 3. April
The main goal of this week is to get the (MAC/SAS ???) software up to a level so that the operators can generate a (not-triggered?) data dump from the TBBs and return a single hdf5-file with all the raw-data to the user. Secondary goals are to include metadata (e.g. the antenna positions) in the file and to get a triggered data dump. (Otherwise these issues are addressed at a later time.)
Side-topics will probably be the inclusion of the metadata into the TBB files and imaging from TBB data.
Everybody who plans to attend is kindly asked to send an e-mail to A.Horneffer-at-astro.ru.nl
Schedule
| Monday 30.3. | 11:00 | Start with a “kick-off” meeting, splitting into groups |
|---|---|---|
| Wednesday 1.4. | 13:00 | Midpoint meeting |
| Friday 3.4. | 14:00 | Wrap-up meeting (Muller Kamer) |
| Friday 3.4. | afternoon | End |
Planned activities
Work on the DAQ
Improve the TBB data acquisition so that the the following is (reasonably) conveniently possible (in decreasing importance):
- non triggered data dumps into hdf5 files. Including:
- read out the same (absolute) time range from several stations
- generation of correct hdf5 files
- generation of a single hdf5-file (from all stations)
- inclusion of basic metadata in hdf5 files (not really DAQ), i.e.:
- antenna positions
- externally triggered data dumps
including saving data around a given time - locally (on station level) triggered data dumps
- centrally (at CEP, from beam-formed data) triggered data dumps
Other activities
(Activities at lower priority, mostly done by people not directly involved with the DAQ work.)
- generation of a beam-formed time-series (Kalpana, Olaf)
- imaging of TBB data (Sef, Heino, Lars)
- GUI / data inspection tool (Arthur, Heino)
Please add to this list, or send me(AH) an e-mail!
Participants
- Kenneth Anderson (Fri. and maybe more)
- Lars Baehren (*)
- Arthur Corstanje (*)
- Heino Falcke (Tue. and Wed.) (#)
- Jean-Mathias Griessmeier (from Tue. or Wed. on)
- Joerg Hoerandel (Wed. and Fri.)
- Andreas Horneffer (*)
- Olaf Scholten (Tue. and Wed. afternoon)
- Kalpana Singh (*)
- Sander Ter Veen (*)
- Sef Welles (*)
(*): Room booked in the ASTRON guesthouse (#): Room booked in the hotel De Borken
Tasks
| Task | Responsible | Status |
|---|---|---|
| Adjustment of initial timeout when starting up tbb2h5 to start listening for data coming at a designated port | Baehren | done (r2502) |
| Resorting of incoming data blocks in tbb2h5 | Horneffer | done (r2504) |
| Debugging of LOFAR_TBB: gives segmentation fault when adjusting blocksize after construction | — | pending |
| Debugging of DAL routine to read string-valued attributes; after earlier changes on in some of the basic DAL functions by Joe, the retrieval of such attributes fails and therefore also causes TBB_LOFAR to crash. | Baehren | done (r2503) |
| Start writing out TBB data from the oldest entry in the buffer, such that frames sent off to CEP at least leave the station in chronological order | Donker | done |
| Clean up command line parameters passed to tbb2h5; some of the currently expected values appear not to even get used in TBB.cpp | bahren | pending |
| Create dynamic spectrum from dump of TBB data | ter Veen, Griessmeier | pending |
| Debugging of Beamformer: the retrieved weights which are applied to the data are all unity, which means that somewhere along the line values are not passed correctly | Baehren | pending |
| Reduce the output speed of the TBBs so that no packages are lost | Donker | pending |
| Fix tbb2h5 so that reading from a socket works | Horneffer | done (r2514) |
| Fix tbb2h5 so that it can handle different dipoles. | Horneffer | done (r2518) |
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