Gizmo -- a multi-physics simulation engine

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GIZMO is a versatile, massively-parallel multi-physics simulation code designed for solving fluid equations through various methods tailored to specific problems. It features innovative Lagrangian Godunov-type methods that enhance fluid equation solutions with a moving particle distribution, effectively addressing common issues found in adaptive mesh refinement (AMR) codes, such as advection errors and excessive diffusion. GIZMO also offers fast self-gravity solutions with fully-adaptive gravitational softenings. The code is highly scalable, capable of running on platforms ranging from personal laptops to supercomputers with over a million CPUs. GIZMO is derived from GADGET, maintaining compatibility with its conventions and input/output processes, making it accessible for users familiar with GADGET.
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Found this Gizmo engine in an article on simulating Population III stars in the early universe.

http://www.tapir.caltech.edu/~phopkins/Site/GIZMO.html

Welcome!

GIZMO is a flexible, massively-parallel, multi-physics simulation code. The code lets you solve the fluid equations using a variety of different methods -- whatever is best for the problem at hand. It introduces new Lagrangian Godunov-type methods that allow you to solve the fluid equations with a moving particle distribution that is automatically adaptive in resolution and avoids the advection errors, angular momentum conservation errors, and excessive diffusion problems that limit the applicability of “adaptive mesh” (AMR) codes, while simultaneously avoiding the low-order errors inherent to simpler methods like smoothed-particle hydrodynamics (SPH). Meanwhile, self-gravity is solved fast, with fully-adaptive gravitational softenings. And the code is massively parallel — it has been run on everything from a Mac laptop to >1 million CPUs on national supercomputers.

The code is originally descended from GADGET, and has retained many naming/use conventions as well as input/output cross-compatibility — if you have code or experience from GADGET, it should immediately be compatible with GIZMO.
 
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Looks interesting but the code link doesn't work. :(

EDIT: Oh sorry. I pressed the wrong link.
 
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