Adaptive computational fluid dynamics
Quinoa is a set of computational tools that enables research and numerical analysis in fluid dynamics. Using the Charm++ runtime system, we employ asynchronous (or non-blocking) parallel programming and decompose computational problems into a large number of work units (that may be more than the available number of processors) enabling arbitrary overlap of parallel computation, communication, input, and output. Then the runtime system dynamically and automatically homogenizes computational load across the simulation distributed across many computers.
Our ultimate goal is to simulate large and complex engineering multiphysics problems with a production-quality code that is extensible and maintainable, using hardware resources efficiently, even for problems with a priori unknown, heterogeneous, and dynamic load distribution. Read more at our Philosophy page.
Quinoa consists of the following tools:
Walker — Time-integrator for stochastic differential equations
Walker is a mathematical tool to analyze and design the behavior of stochastic differential equations. Solving a multivariate Fokker-Planck equation, it allows the estimation of arbitrary coupled statistics and probability distributions as they evolve in time and is used for the design of statistical moment approximations for turbulent flows.
Inciter — Navier-Stokes solver for complex domains
Inciter is a fully asynchronous distributed-memory-parallel fluid solver for complex engineering geometries. We are working on a compressible-flow solver using continuous and discontinuous Galerkin finite element methods, and solution-adaptive mesh-, and polynomial-degree refinement, enabling dynamically concentrating compute resources to regions with interesting physics.
RNGTest — Random number generators test suite
RNGTest is a test harness to subject random number generators to stringent statistical tests, enabling quantitative ranking with respect to their quality and computational cost. Multiple generators can be tested from Intel's Math Kernel Library, RNGSSE, and Random123.
UnitTest — Test suite for synchronous and asynchronous functions
UnitTest is an asynchronous distributed-memory-parallel test harness, capable of testing serial, synchronous (e.g., MPI) parallel, and asynchronous parallel (e.g., Charm++) functions.
MeshConv — Tetrahedron-mesh converter
MeshConv is a mesh file converter that can be used to convert tetrahedron meshes from and to either of the following formats: Gmsh, Netgen, ExodusII, HyperMesh, and ASC used in Jacob Waltz's Chicoma code.
Install prerequisites: Debian/Ubuntu linux (line 1: required, line 2: recommended)
apt-get install cmake gfortran gcc g++ openmpi-bin libopenmpi-dev apt-get install gmsh libpugixml-dev libpstreams-dev libboost-all-dev liblapack-dev liblapacke-dev libhdf5-dev libhdf5-openmpi-dev libhypre-dev
Install prerequisites: Mac OS X (line 1: required, line 2: recommended)
port install cmake openmpi-gcc7 && port select gcc mp-gcc7 && port select mpi openmpi-gcc7-fortran port install gmsh pugixml lapack
Clone, build third-party libraries, build & test
git clone --recurse-submodules https://github.com/quinoacomputing/quinoa.git; cd quinoa mkdir tpl/build; cd tpl/build; cmake -DCMAKE_CXX_COMPILER=mpicxx -DCMAKE_C_COMPILER=mpicc -DCMAKE_Fortran_COMPILER=mpif90 ..; make; cd - mkdir build; cd build; cmake -DCMAKE_CXX_COMPILER=mpicxx -DCMAKE_C_COMPILER=mpicc ../src; make; ../script/run_tests.sh
All executables will be under
build/Main/. Read more about other ways of cloning and working with quinoa's repositories on the page detailing Third-party libraries and external tools using git submodules and subtrees.
- Source — https:/
/ github.com/ quinoacomputing/ quinoa
- Releases — https:/
/ github.com/ quinoacomputing/ quinoa/ releases
- Contributing — https:/
/ www.clahub.com/ agreements/ quinoacomputing/ quinoa
- License — https:/
/ github.com/ quinoacomputing/ quinoa/ blob/ master/ LICENSE
- Third-party libraries and licenses — https:/
/ quinoacomputing.github.io/ licenses.html
- Documentation — https:/
- Web — https:/
- Email — email@example.com
- Gitter — https:/
/ gitter.im/ quinoacomputing/ quinoa
- Philosophy — https:/
/ quinoacomputing.github.io/ why
- Papers — https:/
/ quinoacomputing.github.io/ papers
- Roadmap — https:/
/ github.com/ quinoacomputing/ quinoa/ issues
- Doxygen — https:/
- Coverage — https:/
/ quinoacomputing.github.io/ coverage
- Codecov — https:/
/ codecov.io/ gh/ quinoacomputing/ quinoa/ commits
- Sonarqube — https:/
/ sonarqube.com/ organizations/ quinoacomputing
- Docker — https:/
/ hub.docker.com/ r/ quinoacomputing/ quinoa
- Travis — https:/
/ travis-ci.org/ quinoacomputing/ quinoa/ builds
- Analytics — http:/
/ www.openhub.net/ p/ quinoacomputing
- Cite — https:/
/ zenodo.org/ badge/ latestdoi/ 38454430
Copyright (c) 2016-2018, Los Alamos National Security, LLC All rights reserved.
Copyright 2016-2018. Los Alamos National Security, LLC. This software was produced under U.S. Government contract DE-AC52-06NA25396 for Los Alamos National Laboratory (LANL), which is operated by Los Alamos National Security, LLC for the U.S. Department of Energy. The U.S. Government has rights to use, reproduce, and distribute this software. NEITHER THE GOVERNMENT NOR LOS ALAMOS NATIONAL SECURITY, LLC MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to produce derivative works, such modified software should be clearly marked, so as not to confuse it with the version available from LANL.
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