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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)
import os
from spack.package import *
class Nekrs(Package, CudaPackage, ROCmPackage):
"""nekRS is an open-source Navier Stokes solver based on the spectral
element method targeting classical processors and hardware accelerators
like GPUs"""
homepage = "https://github.com/Nek5000/nekRS"
git = "https://github.com/Nek5000/nekRS.git"
tags = [
"cfd",
"flow",
"hpc",
"solver",
"navier-stokes",
"spectral-elements",
"fluid",
"ecp",
"ecp-apps",
]
maintainers("thilinarmtb", "stgeke")
license("BSD-3-Clause")
version("21.0", tag="v21.0", commit="bcd890bf3f9fb4d91224c83aeda75c33570f1eaa")
variant("opencl", default=False, description="Activates support for OpenCL")
# Conflicts:
# nekrs includes following packages, but in order to build as part of
# CEED we can't leave them in as conflicts. They should be enabled
# sometime in future.
# for pkg in ['occa', 'hyper', 'nek5000', 'blas', 'lapack', 'gslib']:
# conflicts('^' + pkg, msg=(pkg + " is built into nekRS"))
# Dependencies
depends_on("mpi")
depends_on("git")
depends_on("cmake")
@run_before("install")
def fortran_check(self):
if not self.compiler.f77:
msg = "Cannot build NekRS without a Fortran 77 compiler."
raise RuntimeError(msg)
# Following 4 methods are stolen from OCCA since we are using OCCA
# shipped with nekRS.
def _setup_runtime_flags(self, s_env):
spec = self.spec
s_env.set("OCCA_CXX", self.compiler.cxx)
cxxflags = spec.compiler_flags["cxxflags"]
if cxxflags:
# Run-time compiler flags:
s_env.set("OCCA_CXXFLAGS", " ".join(cxxflags))
if "+cuda" in spec:
cuda_dir = spec["cuda"].prefix
# Run-time CUDA compiler:
s_env.set("OCCA_CUDA_COMPILER", join_path(cuda_dir, "bin", "nvcc"))
def setup_build_environment(self, env):
spec = self.spec
# The environment variable CXX is automatically set to the Spack
# compiler wrapper.
# The cxxflags, if specified, will be set by the Spack compiler wrapper
# while the environment variable CXXFLAGS will remain undefined.
# We define CXXFLAGS in the environment to tell OCCA to use the user
# specified flags instead of its defaults. This way the compiler will
# get the cxxflags twice - once from the Spack compiler wrapper and
# second time from OCCA - however, only the second one will be seen in
# the verbose output, so we keep both.
cxxflags = spec.compiler_flags["cxxflags"]
if cxxflags:
env.set("CXXFLAGS", " ".join(cxxflags))
# For the cuda, openmp, and opencl variants, set the environment
# variable OCCA_{CUDA,OPENMP,OPENCL}_ENABLED only if the variant is
# disabled. Otherwise, let OCCA autodetect what is available.
if "+cuda" in spec:
cuda_dir = spec["cuda"].prefix
cuda_libs_list = ["libcuda", "libcudart", "libOpenCL"]
cuda_libs = find_libraries(cuda_libs_list, cuda_dir, shared=True, recursive=True)
env.set("OCCA_INCLUDE_PATH", cuda_dir.include)
env.set("OCCA_LIBRARY_PATH", ":".join(cuda_libs.directories))
env.set("OCCA_CUDA_ENABLED", "1")
else:
env.set("OCCA_CUDA_ENABLED", "0")
env.set("OCCA_OPENCL_ENABLED", "1" if "+opencl" in spec else "0")
env.set("OCCA_HIP_ENABLED", "1" if "+rocm" in spec else "0")
# Setup run-time environment for testing.
env.set("OCCA_VERBOSE", "1")
self._setup_runtime_flags(env)
def setup_run_environment(self, env):
# The 'env' is included in the Spack generated module files.
self._setup_runtime_flags(env)
def setup_dependent_build_environment(self, env, dependent_spec):
# Export OCCA_* variables for everyone using this package from within
# Spack.
self._setup_runtime_flags(env)
def install(self, spec, prefix):
script_dir = "scripts"
with working_dir(script_dir):
# Make sure nekmpi wrapper uses srun when we know OpenMPI
# is not built with mpiexec
if "^openmpi~legacylaunchers" in spec:
filter_file(r"mpirun -np", "srun -n", "nrsmpi")
filter_file(r"mpirun -np", "srun -n", "nrspre")
filter_file(r"mpirun -np", "srun -n", "nrsbmpi")
makenrs = Executable(os.path.join(os.getcwd(), "makenrs"))
makenrs.add_default_env("NEKRS_INSTALL_DIR", prefix)
makenrs.add_default_env("NEKRS_CC", spec["mpi"].mpicc)
makenrs.add_default_env("NEKRS_CXX", spec["mpi"].mpicxx)
makenrs.add_default_env("NEKRS_FC", spec["mpi"].mpifc)
makenrs.add_default_env("TRAVIS", "true")
makenrs(output=str, error=str, fail_on_error=True)
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