Philip Mocz

# Summary - This PR adds a cylindrical FSISPH solver: SolidFSISPHRZ For testing I am looking at: ## Noh-RZ planar collapse (converging on the y-axis) ```shell cd tests/functional/Hydro/Noh spheral Noh-RZ.py...

New Build System

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by Vincent Vanlaer

Large drops in opacity near edges of table

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This is related to issue: https://github.com/MESAHub/mesa/issues/814 Plotting the opacity as a function of temperature and density using `kap/plotter` (extending the bounds) reveals big drops in the opacity on the left...

GPU support

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We should explore porting MESA to GPUs. Here is one approach for offloading some of our most intensive calculations: the block tridiagonal matrix solve cuSparse has a tridiagonal solver we...

These functions return uninitialized values when `ierr /= 0` internally. In some cases, they return the value silently and the simulation continues to run! ``` adipls/adipack.c/adipls/signew.n.d.f double precision function signew(...

Increase Unit Test Coverage

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MESA now reports which lines of code are run and tested when we do an `./install` here: https://mesastar.org/mesa/ As can be seen, half of the functions are not tested by...

Improve MESA's linesearch

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MESA uses a Newton-Raphson scheme with line search to solve for the zero point of a linearized system and find the solution to the stellar structure. This involves inverting a...