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# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
from spack.package import *
class Changa(AutotoolsPackage):
"""ChaNGa (Charm N-body GrAvity solver) is a code to perform collisionless
N-body simulations. It can perform cosmological simulations with periodic
boundary conditions in comoving coordinates or simulations of isolated
stellar systems. It also can include hydrodynamics using the Smooth
Particle Hydrodynamics (SPH) technique. It uses a Barnes-Hut tree to
calculate gravity, with hexadecapole expansion of nodes and
Ewald summation for periodic forces. Timestepping is done with a leapfrog
integrator with individual timesteps for each particle."""
homepage = "https://faculty.washington.edu/trq/hpcc/tools/changa.html"
url = "https://github.com/N-BodyShop/changa/archive/v3.4.tar.gz"
git = "https://github.com/N-BodyShop/changa.git"
version("master", branch="master")
version("3.4", sha256="c2bceb6ac00025dfd704bb6960bc17c6df7c746872185845d1e75f47e6ce2a94")
patch("fix_configure_path.patch")
resource(
name="utility",
url="https://github.com/N-BodyShop/utility/archive/v3.4.tar.gz",
sha256="19f9f09023ce9d642e848a36948788fb29cd7deb8e9346cdaac4c945f1416667",
placement="utility",
)
depends_on("charmpp build-target=ChaNGa")
def configure_args(self):
args = []
args.append("STRUCT_DIR={0}/utility/structures".format(self.stage.source_path))
return args
def install(self, spec, prefix):
with working_dir(self.build_directory):
mkdirp(prefix.bin)
install("ChaNGa", prefix.bin)
install("charmrun", prefix.bin)
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