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DSP Session: 4th June 2025 11:00-12:30

Location Time
Washington DC, USA Wed, 4 Jun 2025 at 11:00 EDT
UTC, Time Zone Wed, 4 Jun 2025 at 15:00
Catania, Italy Wed, 4 Jun 2025 at 17:00 CEST
Bristol, United Kingdom Wed, 4 Jun 2025 at 16:00 BST
Beijing, China Wed, 4 Jun 2025 at 23:00 CST
Paris, France Wed, 4 Jun 2025 at 17:00 CEST
Perth, Australia Wed, 4 Jun 2025 at 23:00 AWST
Victoria, Canada Wed, 4 Jun 2025 at 08:00 PDT

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Wednesday June 4 @11:00 CEST: Room
Speaker Title Time Abstract Material

Dave Morris

(Remote)

 		Execution Broker Update

15'

11:00-11:15

 		The IVOA Execution Broker Working Draft represents a key step toward standardising how astronomical workflows and computational tasks are managed and executed across distributed infrastructures. This talk will provide an update on the current status of the draft specification, outlining its core concepts and goals. It will also highlight ongoing prototype implementations being developed within the context of the SRCNet (Square Kilometre Array Regional Centres Network), demonstrating practical applications and informing the evolution of the standard. The session will offer insights into lessons learned, emerging challenges, and next steps toward community adoption.  

ZHANG, Zhen

(Remote)

 		Experiences and lessons learned from EP scientific workflow

15'

11:15-11:30

 		An automated and efficient workflow is crucial for scientific output in astronomy, particularly in time-domain astronomy. The National Astronomical Data Centre (NADC) has undertaken the development of the workflow for the Einstein Probe(EP), a high-energy X-ray satellite focused on time-domain astronomy. During the development process, we encountered challenges including workflow orchestration, workflow scalability, and the traceability of data product generation processes. To address these issues, we developed a workflow framework based on cloud technologies, including containers, message queues, and workflow orchestrators etc. This framework offers excellent scalability and portability and significantly enhance the efficiency of complex algorithm integration and deployment in multi-team collaborations. Finally, we proposed our recommendation for provenance and workflow data model. This framework can be further applied to future time-domain astronomy projects, and we hope that our experiences can provide insights for the IVOA workflow standards.  

Joshua Fraustro

(In person)

 		Generation of code from OpenAPI

15'

11:30-11:45

 		In the ongoing efforts within the International Virtual Observatory Alliance (IVOA), we are working to define our protocols using OpenAPI specifications. This approach aims to make our standards not only human-readable but also machine-actionable, thereby enhancing interoperability and automation. However, the generation of OpenAPI documentation from our existing protocol definitions presents several challenges and limitations.  

Mark Taylor

(Remote)

 		IVOA Authentication

15'

12:00-12:15

 		The challenge of enabling non-browser clients to authenticate against VO services has been the focus of several recent IVOA discussions. Building on consistent technical proposals presented at past Interops, this talk revisits the concept of an IVOA Identity and Access Management (IVOA-IAM) document, originally suggested in Malta. The speaker will summarise existing implementations—such as ivoa_cookie and ivoa_x509 schemes in production at ESAC and CADC—and explore how these mechanisms align with standard HTTP authentication headers and VO capabilities endpoints. Despite practical adoption, standardisation efforts have stalled, leaving documentation scattered and inconsistent. This session will assess the current state, revisit the rationale for a focused IVOA-IAM document with reduced scope, and propose a way forward—potentially including a community-reviewed draft authored by the speaker.  
All Brainstorming on IVOA Authentication

20'

12:15-12:30

 		   
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Topic revision: r1 - 2025-05-12 - JesusSalgado
 
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