1. GeoFramework: Example of using frameworks in geophysics
Mike Gurnis
Caltech
Tectonic Modeling Workshop
June, 2005

2. A hierarchy of software components?
Superstructure ?
Geodynamic Specific ?
Infrastructure ?
Library

3. Superstructure and Geodynamic Specific Layers
Simulation controller
Monitor Simulation
Couple Fluid to Solid
Superstructure
Component A
Component B ….
Geodynamic Specific

4. Pyre Framework (Science Neutral)
The integration framework is a set of co-operating abstract services
component
bindings
engine
solver
python
package
service
framework
component
bindings
engine
solver
component
bindings
library
infrastructure
abstract class
specialization
FORTRAN/C/C++
Developed by Michael Aivazis

5. GeoFramework TECTON Solver

6. Virtual Test Facility (VTF): Example From Pyre

7. CitcomS
main
Parser
Mesher
Stokes
solver
T solver
Output

8. Pyre version of CitcomS
regionalcitcoms.py
Components
(Python)
Mesher.py
Vsolver.py
TSolver.py
Ouput.py
Python
bindings
Mesher
Stokes
solver
T solver
Output
RegionalModule.so
(a shared object)

9. CitcomS.py as a single component

10. Coupling With Pyre

11. Regional and Global Mantle Flow Coupled with Pyre
CitcomS.py, Eh Tan

12. Regional CitcomS coupled to full CitcomS
CitcomS.py, Eh Tan

13. Predictions: Hot-spot track & synthetic tomography

14. Example: Mantle convection coupled to lithosphere
Monitor Simulation
Couple Fluid to Solid
Visualization
Superstructure
Self-contained geophysics (single phyiscs)
Rheology modules
Geodynamic Specific
Mesher: Solid & Fluid
Solver: Solid & Fluid
Infrastructure
Library: PETSc, BLAS, MPI

15. Example of Geodynamic Specific & Infrastructure Layers
SNARK -- particle based FEM with implicit solver
SNAC -- Lagragian explicit FEM
Geodynamic Specific
StGermain: A framework with entry points & plugins for: building meshes, advecting particles, calling solvers, I/O…..
Infrastructure
Library: PETSc, MPI

16. Example of Geodynamic Specific & Infrastructure Layers
SNARK: Monash group (Moresi)
SNAC: Caltech/Texas groups (Gurnis, Lavier)
SNARK -- particle based FEM with implicit solver
SNAC -- Lagragian explicit FEM
Infrastructure:
Software Engineers at the
Victorian Partnership for
Advanced Computing
(Steve Quenette Team Leader)
StGermain: A framework with entry points & plugins for: building meshes, advecting particles, calling solvers, I/O…..

17. SNARK & SNAC Moresi et al. Choi et al. Quenette et al.
StGermain: A framework with entry points & plugins for: building meshes, advecting particles, calling solvers, I/O…..
Quenette et al.

18. SNAC

19. Pyre CitcomS SNAC pHMelts
Examples of coupling codes with Pyre (“superstructure” framework): GeoFramework
Pyre a
geophysics
solver
CitcomS
Exchanger
SNAC
pHMelts

20. SNAC CitcomS coupling (Crust-Mantle Interaction)
Eun-seo Choi et al.