Welcome and logistics

• Natalie Danzei
• John Swinbank (ASTRON)

- Aims for this meeting. - Thanks to SURF for hosting. - Local facilities, where to find coffee, etc. - Confirm plans for a group dinner.

LOFAR2 Science Operations: Schedule, Policies & Requirements

• Roberto Pizzo

- The current status of LOFAR2.0 construction - Timeline to operations - Resource needs - Data management plans - Data retirement - Federated vs centralized processing

LOFAR2 LTA System Architecture & Technical Requirements

• Hanno Holties

- What services are we putting in place to address the LOFAR2.0 needs? - User data ingest, data processing, ... - How is software being deployed and versioned? - What is needed from data centres to make them possible? - Are there outstanding issues regarding system access, availability, ... that we need to address?

Data Processing Pipelines

• John Swinbank (ASTRON)

- What types of pipeline are needed for LOFAR2? - How are pipelines being developed and selected? - How will pipelines be supported & maintained? - Use of accelerator hardware (e.g. GPUs)

Discussion: Making LOFAR2.0 Possible

• John Swinbank (ASTRON)

- Based on earlier presentations, what are the key topics that need to be clarified from the point of view of the LTA sites? - Are there capabilities that some or all of the LTA sites will find hard to make available for LOFAR2? - Answer the questions we can now; otherwise, builb a list of topics that need further discussion or investigation over the remainder of the meeting.

Site update: PCSS - Current status - Future developments that might impact LTA development or operations (e.g. hardware or technology changes)

Site Update: FZJ

Site Update: SURF

Round Table: Integration between storage and computing

• Maciej Brzezniak

integration approaches among storage site (LTA plus online storage) and cloud computing / HPC computing environment. There are for sure various ideas / views across centers that depend on their local situation, the architecture of their compute clusters and their current level of storage/compute integration. We imaging that one as the round-table / brainstorming kind of session...

LENSS

• Ilse van Bemmel

- What is the LENSS project? - What does the LTA need to do to support it?

Future Ambitions for the Radio Astronomy Community

• John Swinbank (ASTRON)

Beyond LOFAR2.0, what are the additional services the LOFAR community needs? - User pipelines - Science platform - Improved data discovery - VO interfaces - ... What projects is ASTRON working on to help realize these? What sort of roadmap might we expect?

SRCNet Status Update

• Janneke de Boer

- What is SRCNet? - What facilities will it provide to the SKAO community? - How is development being organized? - What is its current state and anticipated timeline?

The RADIO Collaboration: A common architecture for radio astronomy?

• Hanno Holties

Discussion: Future Goals We heard a lot about ambitions from ASTRON and the radio astronomy community this afternoon. We should discuss: - What other opportunities are there? - How can we realize these goals? - What blockers or challenges do we need to address?

Planning for New LTA Sites

• Hanno Holties

- What do new sites need to do to join the LTA? - What do ASTRON and/or existing sites need to do to facilitate that process? - Plenty of time for Q&A from meeting participants.

Discussion Time - Extra discussion space for matters that have come up during the meeting. - Agree action items. - Plans for future meetings.