In an Underworld release far, far away…
Geodynamicists struggle to model planetary dynamics due to the Cartesian Empire. Physical observations suffer inappropriate meshing and projections bend minds. The Underworld team builds the ultimate weapon to erase the Cartesian nightmare based on the ancient practice of the Cubed-Sphere mesh. A fight to modify a numerical implementation begins to bring peace and restore funding across the galaxy.
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Quagmire is an open source, parallel python module for modelling surface processes and landscape evolution. It comes from the Underworld geodynamics group and has many common design patterns to Underworld. For starters, this is not an out-of-the-box …
Most of the codes I develop run in parallel using MPI (Message Passing Interface) using the python wrapper, mpi4py. There is a reason why highly scalable programs use this approach, and that is because each processor handles its own chunk of memory and communicates with other processors only when it’s needed. PETSc, for example, is a behemoth computing framework entirely written in the MPI computing philosophy. Despite MPI’s efficiency, there are some barriers:
A method to relate the spatial configuration of mesh nodes to lithology that is differentiable - an adjoint to the inversion of geological structure.
Computing Curie depth from the magnetic anomaly
This is how you go from a jpeg to a csv
An adjoint to the analytical steady-state heat equation
Algebraic expression in matrix representation to solve temperature using implicit 2D finite difference