SimDAP

Simulation Data Access Protocol

C. Gheller, R. Wagner

Overview

Analogies

• SimDB is like the Registry or ConeSearch
• SimDAP is like SIAP and SSAP

Roles

• SimDB lets you find experiments (simulations) and snapshots (results)
• SimDAP provides access references (URLs)
• Both use the same data model
• Related through the publisherDID of the the experiments and snapshots

Text Cartoon

1. Query SimDB service to find experiments (iterate)
2. Pass experiment, snapshot publisherDID to SimDAP service
3. Retrieve VOTable with access references
4. Download data

Why this Split?

• Like registries, assume a few SimDB services, many SimDAP services
• Enable "simple" publishing of data
• Separate work based on specialization (databases vs. data)

SimDAP Outline

1. Introduction
2. Requirements for Compliance
3. Service Functions
1. Current
• Download - retrieving an entire snapshot
• Preview - access pre-computed low-resolution data (getThumb)
• Cutout - a subset of the original data
• Custom - define the base parameters for custom services
• Get Capabilities
2. Future
• Data Staging
4. Simulation and Dataset Selection
1. Data Model Metadata
2. Common Parameters
• Experiment - a simulation
• Snapshot - a dataset
3. Additional Parameters
• Fields
• Units
5. Service Request and Response
1. Request
2. Response
3. Access Reference
6. Service Parameters
1. Download
2. Preview
3. Cutout
4. Custom
7. Service Metadata and Registration
8. Appendix A - VOTable Examples

Planning

• What next?
• Action plan to get SimDAP to next PR by next InterOp
• File formats...