Kepler includes contributors from GEON, SEEK, SDM Center and Ptolemy II, supported by NSF ITRs 022567 (SEEK), EAR-0225673 (GEON), DOE DE-FC02-01ER25486 (SciDAC/SDM), and DARPA F33615-00-C-1703 (Ptolemy).

The installer for Kepler 1.6a is available for download at http://kepler-project.org

Kepler is a system for design and execution of scientific workflows. Built on top of the powerful Ptolemy II modeling tool, Kepler allows scientists to design, prototype and execute in a single environment a wide spectrum of scientific workflows, ranging from high-level domain-specific ones (e.g.mineral classification) to low-level “Grid workflows”. With an intuitive drag&drop interface, Kepler is an effective tool for scientists who need a flexible and extensible workflow environment.

Geosciences problems often require complex data access and computational analysis. These can be composed in a meaningful order into a geosciences workflow. Kepler provides the following components to assist geologists in scientific discovery:

Data handling features:• Data extraction and registration workflows• Metadata based data search and access• Local and remote data access:

• Relational and Geospatial databases• Web service data access (query)• Storage Resource Broker (SRB)• File Transfer Protocols: GridFTP, SCP, SRB

Processing tools:• Generic web service client• Legacy application integration via Shell- Command actor e.g. R, GMT• Browser user interface for visualization and user interface• Domain specific applications:

• ArcIMS services• Point in polygon classification algorithm• Grid interpolation algorithms

Workflow prototyping tool (for napkin drawings)

Local and remote execution environments:• Local Kepler application• Execution from a portal environment• Coming soon: peer to peer execution model

Future Directions:• A workflow for integrating seismic events focal mechanisms (beach balls) with ArcIMS image services• Mapping workflows onto the grid, using Pegasus, to handle massive datasets (e.g., LIDAR)• A unified framework for accessing dataset and registering workflow products within the portal• Additional portal execution support• GRASS support

Kepler as a Modeling Tool: Gravity Modeling Design Workflow

Integrating heterogeneous gravity depth sources to create a 3-D gravity model.

Component Component (actor) libraries(actor) libraries

inline inline documentationdocumentation

Randy Keller, Ann GatesObserved Gravity Model

Implemented part

Grid Grid interpolation interpolation

actoractor

Coming Soon: Mapping Workflow onto the Grid

Processing Lidar dataset using a grid-mapper director (pegasus).

Searching for Lidar datasets and registering themInto a db2 spatial database.

Lidar Processing Output

Lidar datasets Processing

Browser Browser display of display of

resultsresults

Pluggable Pluggable WebWeb

ServicesServices

Kepler and GEON: A Scientific Workflow ApproachKepler and GEON: A Scientific Workflow Approachto Processing Geosciences Datato Processing Geosciences Data

Efrat Frank, Ilkay Altintas, Bertram LudaescherSan Diego Supercomputer Center

GEON Mineral and Rock Classifier

• Mineral Classification for naming Igneous rocks using IUGS classification diagrams.• Rock Classification for extracting Atype bodies. Integrating relational and spatial databases. Support for portal environment execution. Input formats:

• Igneous rock relational and spatial databases• Classification diagrams (SVGs)

Process reusability: Classification of samplesNext step: Represent the 3-D geometry of Atype bodies through modeling of gravity data.Future step: Classification of orogenic basins.

Local & Local & remoteremote

JDBC accessJDBC access

Classification algorithm sub-workflow

Rock Classifier

Mineral Classifier

PointInPolyPointInPolygongon

ArcIMS ArcIMS serviceservice

ss

Composite Composite actoractor

SVG Diagram

Atype Output