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# Copyright 2013-2022 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
import os.path
import llnl.util.lang
from spack import *
class FftwBase(AutotoolsPackage):
"""Base class for building Fftw, shared with the AMD optimized version
of the library in the 'amdfftw' package.
"""
variant(
'precision', values=any_combination_of(
'float', 'double', 'long_double', 'quad'
).prohibit_empty_set().with_default('float,double'),
description='Build the selected floating-point precision libraries'
)
variant('openmp', default=False, description="Enable OpenMP support.")
variant('mpi', default=True, description='Activate MPI support')
depends_on('mpi', when='+mpi')
depends_on('llvm-openmp', when='%apple-clang +openmp')
# https://github.com/FFTW/fftw3/commit/902d0982522cdf6f0acd60f01f59203824e8e6f3
conflicts('%gcc@8.0:8', when="@3.3.7")
conflicts('precision=long_double', when='@2.1.5',
msg='Long double precision is not supported in FFTW 2')
conflicts('precision=quad', when='@2.1.5',
msg='Quad precision is not supported in FFTW 2')
conflicts('precision=quad', when='+mpi',
msg='Quad precision is not supported in MPI')
@property
def libs(self):
# Reduce repetitions of entries
query_parameters = list(llnl.util.lang.dedupe(
self.spec.last_query.extra_parameters
))
# List of all the suffixes associated with float precisions
precisions = [
('float', 'f'),
('double', ''),
('long_double', 'l'),
('quad', 'q')
]
# Retrieve the correct suffixes, or use double as a default
suffixes = [v for k, v in precisions if k in query_parameters] or ['']
# Construct the list of libraries that needs to be found
libraries = []
for sfx in suffixes:
if 'mpi' in query_parameters and '+mpi' in self.spec:
libraries.append('libfftw3' + sfx + '_mpi')
if 'openmp' in query_parameters and '+openmp' in self.spec:
libraries.append('libfftw3' + sfx + '_omp')
libraries.append('libfftw3' + sfx)
return find_libraries(libraries, root=self.prefix, recursive=True)
def patch(self):
# If fftw/config.h exists in the source tree, it will take precedence
# over the copy in build dir. As only the latter has proper config
# for our build, this is a problem. See e.g. issue #7372 on github
if os.path.isfile('fftw/config.h'):
os.rename('fftw/config.h', 'fftw/config.h.SPACK_RENAMED')
def autoreconf(self, spec, prefix):
if '+pfft_patches' in spec:
autoreconf = which('autoreconf')
autoreconf('-ifv')
@property
def selected_precisions(self):
"""Precisions that have been selected in this build"""
return self.spec.variants['precision'].value
def setup_build_environment(self, env):
if self.spec.satisfies('%apple-clang +openmp'):
env.append_flags(
'CPPFLAGS', self.compiler.openmp_flag)
env.append_flags(
'CFLAGS', self.spec['llvm-openmp'].headers.include_flags)
env.append_flags(
'CXXFLAGS', self.spec['llvm-openmp'].headers.include_flags)
env.append_flags(
'LDFLAGS', self.spec['llvm-openmp'].libs.ld_flags)
# FFTW first configures libtool without MPI, and later uses it with
# MPI. libtool then calls wrong linker to create shared libraries
# (it calls `$CC` instead of `$MPICC`), and MPI symbols
# remain undefined because `-lmpi` is not passed to the linker.
# https://github.com/FFTW/fftw3/issues/274
# https://github.com/spack/spack/issues/29224
if self.spec.satisfies('+mpi') and self.spec.satisfies('platform=darwin'):
env.append_flags('LIBS', self.spec['mpi'].libs.ld_flags)
def configure(self, spec, prefix):
# Base options
options = [
'--prefix={0}'.format(prefix),
'--enable-shared',
'--enable-threads'
]
if not self.compiler.f77 or not self.compiler.fc:
options.append("--disable-fortran")
if spec.satisfies('@:2'):
options.append('--enable-type-prefix')
# Variants that affect every precision
if '+openmp' in spec:
options.append('--enable-openmp')
if spec.satisfies('@:2'):
# TODO: libtool strips CFLAGS, so 2.x libxfftw_threads
# isn't linked to the openmp library. Patch Makefile?
options.insert(0, 'CFLAGS=' + self.compiler.openmp_flag)
if '+mpi' in spec:
options.append('--enable-mpi')
# Specific SIMD support.
# all precisions
simd_features = ['sse2', 'avx', 'avx2', 'avx512', 'avx-128-fma',
'kcvi', 'vsx']
# float only
float_simd_features = ['altivec', 'sse', 'neon']
# Workaround PGI compiler bug when avx2 is enabled
if spec.satisfies('%pgi') and 'avx2' in simd_features:
simd_features.remove('avx2')
# Workaround NVIDIA/PGI compiler bug when avx512 is enabled
if spec.satisfies('%nvhpc') or spec.satisfies('%pgi'):
if 'avx512' in simd_features:
simd_features.remove('avx512')
# NVIDIA compiler does not support Altivec intrinsics
if spec.satisfies('%nvhpc') and 'vsx' in simd_features:
simd_features.remove('vsx')
if spec.satisfies('%nvhpc') and 'altivec' in float_simd_features:
float_simd_features.remove('altivec')
# NVIDIA compiler does not support Neon intrinsics
if spec.satisfies('%nvhpc') and 'neon' in simd_features:
simd_features.remove('neon')
simd_options = []
for feature in simd_features:
msg = '--enable-{0}' if feature in spec.target else '--disable-{0}'
simd_options.append(msg.format(feature))
# If no features are found, enable the generic ones
if not any(f in spec.target for f in
simd_features + float_simd_features):
# Workaround NVIDIA compiler bug
if not spec.satisfies('%nvhpc'):
simd_options += [
'--enable-generic-simd128',
'--enable-generic-simd256'
]
simd_options += [
'--enable-fma' if 'fma' in spec.target else '--disable-fma'
]
# Double is the default precision, for all the others we need
# to enable the corresponding option.
enable_precision = {
'float': ['--enable-float'],
'double': None,
'long_double': ['--enable-long-double'],
'quad': ['--enable-quad-precision']
}
# Different precisions must be configured and compiled one at a time
configure = Executable('../configure')
for precision in self.selected_precisions:
opts = (enable_precision[precision] or []) + options[:]
# SIMD optimizations are available only for float and double
# starting from FFTW 3
if precision in ('float', 'double') and spec.satisfies('@3:'):
opts += simd_options
# float-only acceleration
if precision == 'float':
for feature in float_simd_features:
if feature in spec.target:
msg = '--enable-{0}'
else:
msg = '--disable-{0}'
opts.append(msg.format(feature))
with working_dir(precision, create=True):
configure(*opts)
def for_each_precision_make(self, *targets):
for precision in self.selected_precisions:
with working_dir(precision):
make(*targets)
def build(self, spec, prefix):
self.for_each_precision_make()
def check(self):
self.for_each_precision_make('check')
def install(self, spec, prefix):
self.for_each_precision_make('install')
class Fftw(FftwBase):
"""FFTW is a C subroutine library for computing the discrete Fourier
transform (DFT) in one or more dimensions, of arbitrary input
size, and of both real and complex data (as well as of even/odd
data, i.e. the discrete cosine/sine transforms or DCT/DST). We
believe that FFTW, which is free software, should become the FFT
library of choice for most applications."""
homepage = "https://www.fftw.org"
url = "https://www.fftw.org/fftw-3.3.4.tar.gz"
list_url = "https://www.fftw.org/download.html"
version('3.3.10', sha256='56c932549852cddcfafdab3820b0200c7742675be92179e59e6215b340e26467')
version('3.3.9', sha256='bf2c7ce40b04ae811af714deb512510cc2c17b9ab9d6ddcf49fe4487eea7af3d')
version('3.3.8', sha256='6113262f6e92c5bd474f2875fa1b01054c4ad5040f6b0da7c03c98821d9ae303')
version('3.3.7', sha256='3b609b7feba5230e8f6dd8d245ddbefac324c5a6ae4186947670d9ac2cd25573')
version('3.3.6-pl2', sha256='a5de35c5c824a78a058ca54278c706cdf3d4abba1c56b63531c2cb05f5d57da2')
version('3.3.5', sha256='8ecfe1b04732ec3f5b7d279fdb8efcad536d555f9d1e8fabd027037d45ea8bcf')
version('3.3.4', sha256='8f0cde90929bc05587c3368d2f15cd0530a60b8a9912a8e2979a72dbe5af0982')
version('2.1.5', sha256='f8057fae1c7df8b99116783ef3e94a6a44518d49c72e2e630c24b689c6022630')
variant(
'pfft_patches', default=False,
description='Add extra transpose functions for PFFT compatibility')
depends_on('automake', type='build', when='+pfft_patches')
depends_on('autoconf', type='build', when='+pfft_patches')
depends_on('libtool', type='build', when='+pfft_patches')
provides('fftw-api@2', when='@2.1.5')
provides('fftw-api@3', when='@3:')
patch('pfft-3.3.9.patch', when="@3.3.9:+pfft_patches", level=0)
patch('pfft-3.3.5.patch', when="@3.3.5:3.3.8+pfft_patches", level=0)
patch('pfft-3.3.4.patch', when="@3.3.4+pfft_patches", level=0)
patch('pgi-3.3.6-pl2.patch', when="@3.3.6-pl2%pgi", level=0)
patch('intel-configure.patch', when="@3:3.3.8%intel", level=0)
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