ADAM Documentation

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ADAMAccelerated fluid Dynamics on Adaptive Mesh refinement grids

A physics-agnostic Fortran SDK and its solvers, from a laptop to GPU clusters.

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FLUME
PRISM
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Adaptive Mesh Refinement

Morton-ordered octrees and quadtrees with 2:1 balance and conservative refluxing. Refinement at initialization by geometric, gradient and total-variation markers; FLUME also regrids at runtime.

AMR markers

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One GPU code base

The FNL backend compiles as OpenACC with nvfortran or as OpenMP offloading with amdflang, with GPU-aware MPI; the CPU backend runs the same inputs with MPI and OpenMP.

The FNL library

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Realms and forests

An application is a realm on the library's objects; a forest couples several realms through mirror and 2:1 seams in one synchronized time loop.

The forest

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FLUME

Compressible Euler and ideal MHD with dissipative terms, ideal, isothermal and barotropic gases, gravity, self-gravity, cooling and sink particles.

FLUME

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PRISM

Maxwell equations with particle-in-cell plasmas, coils, PML and perfect-conductor boundaries, and t0 fields from the FLAIL elliptic solvers.

PRISM

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INI-driven configuration

A run is configured by one INI file, and a missing key stops it at initialization; no recompilation to change physics, numerics or grid.

Input reference

What ADAM is ​

ADAM is a modern Fortran library for block-structured adaptive grids: AMR, immersed boundaries, WENO reconstruction, Runge-Kutta integration, elliptic solvers (FLAIL) and parallel I/O, on CPUs and GPUs. Solvers are built on it by supplying only their equations; the two maintained ones are FLUME and PRISM. Start with About and Install.

If you use ADAM in published work, please cite it. ADAM is dual-licensed under MIT or LGPLv3.