- Version 6
- by (unknown)
- Version 7
- by (unknown)
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| 1 | - | + | == !PyLith Development Plans ==
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| 2 | Software development plans for !PyLith | |||
| 3 | ||||
| 4 | === Version 1.8.1 (by mid-late April) === | |||
| 5 | ==== BUG FIXES ==== | |||
| 6 | * Improve solver for rate-state friction and explicit time stepping. difficult (50%) | |||
| 7 | * Remove duplicate impulses in parallel Green's function simulations. done | |||
| 8 | === Version 2.0 (by June workshop) === | |||
| 9 | ==== COMPUTATIONAL SCIENCE ==== | |||
| 10 | * Replace Sieve implementation of finite-element data structures with more efficient !DMPlex implementation. expert (80%) [[br]] | |||
| 11 | !DMPlex implementation is better integrated within !PETSc. Smaller memory usage. Developed to support multiphysics and higher order discretizations. | |||
| 12 | ||||
| 13 | * Higher order basis functions expert (0%) [[br]] | |||
| 14 | Allow user to select order of basis functions independent of the mesh (which defines the geometry). This permits higher resolution for a given mesh. | |||
| 15 | ||||
| 16 | === Version 2.1 (Fall or Winter 2013) === | |||
| 17 | ==== MAJOR FEATURES ==== | |||
| 18 | * Earthquake cycle modeling difficult [[br]] | |||
| 19 | Same mesh for dynamic and quasi-static parts (dynamic -> quasi-static, quasi-static -> dynamic, complete cycle) | |||
| 20 | ||||
| 21 | ==== MINOR FEATURES ==== | |||
| 22 | * Create strain hardening/softening 2-D and 3-D Drucker-Prager elastoplastic models. intermediate | |||
| 23 | * Attenuation via generalized Maxwell model (bulk and shear relaxation) intermediate (50%) | |||
| 24 | * Moment tensor point sources via equivalent body forces difficult (5%) [[br]] | |||
| 25 | Moment tensor point sources provide a mesh independent deformation source that is better suited for Green's function calculations than slip on a fault surface via cohesive cells. | |||
| 26 | ||||
| 27 | === Candidate Features for Version 2.2 (Spring 2014) === | |||
| 28 | ==== MAJOR FEATURES ==== | |||
| 29 | * Multiphysics | |||
| 30 | # Incompressible elasticity via a pressure field expert | |||
| 31 | # Elasticity + heat flow expert | |||
| 32 | # Elasticity + fluid flow expert | |||
| 33 | ==== MINOR FEATURES ==== | |||
| 34 | * Time-step based on strain rate intermediate | |||
| 35 | * Accelerate FE integrations using !GPUs expert (5 %) [[br]] | |||
| 36 | Will provide significant speedup to simulations run by many users because most are running on desktop machines that have GPUs. | |||
| 37 | ||||
| 38 | === Features for Future Releases === | |||
| 39 | ==== MAJOR FEATURES ==== | |||
| 40 | * Earthquake Cycle Modeling | |||
| 41 | # Different meshes for dynamic and quasi-static parts expert [[br]] | |||
| 42 | Requires interpolation of fields between different meshes/discretizations and may require extrapolation of solutions when quasi-static problems span a larger domain than the dynamic problems. | |||
| 43 | ||||
| 44 | === MINOR FEATURES === | |||
| 45 | * Use KD tree search algorithm to allow output of time histories at an arbitrary location difficult | |||
| 46 | * Combined prescribed slip / spontaneous rupture fault condition difficult [[br]] | |||
| 47 | Use fault constitutive model to control slip on fault except during episodes of prescribed slip. Need some way to describe when to turn on/off prescribed slip. | |||
| 48 | * Use threading to accelerate integrations on multi-core machines. difficult | |||