From 040b65876bea73c761aaaf32cf7886fb790f496c Mon Sep 17 00:00:00 2001 From: Levi Baber Date: Wed, 20 Feb 2019 20:52:15 -0600 Subject: gcc: add nvptx offload capability (#9406) Add optional support for Nvidia PTX --- var/spack/repos/builtin/packages/gcc/package.py | 101 ++++++++++++++++++++++++ 1 file changed, 101 insertions(+) diff --git a/var/spack/repos/builtin/packages/gcc/package.py b/var/spack/repos/builtin/packages/gcc/package.py index ddeb95d3ba..57d3ece2c8 100644 --- a/var/spack/repos/builtin/packages/gcc/package.py +++ b/var/spack/repos/builtin/packages/gcc/package.py @@ -18,9 +18,11 @@ class Gcc(AutotoolsPackage): homepage = 'https://gcc.gnu.org' url = 'https://ftpmirror.gnu.org/gcc/gcc-7.1.0/gcc-7.1.0.tar.bz2' + svn = 'svn://gcc.gnu.org/svn/gcc/' list_url = 'http://ftp.gnu.org/gnu/gcc/' list_depth = 1 + version('develop', svn=svn + 'trunk') version('8.2.0', '64898a165f67e136d802a92e7633bf1b06c85266027e52127ea025bf5fc2291b5e858288aac0bdba246e6cdf7c6ec88bc8e0e7f3f6f1985f4297710cafde56ed') version('8.1.0', '65f7c65818dc540b3437605026d329fc') @@ -74,6 +76,9 @@ class Gcc(AutotoolsPackage): variant('strip', default=False, description='Strip executables to reduce installation size') + variant('nvptx', + default=False, + description='Target nvptx offloading to NVIDIA GPUs') # https://gcc.gnu.org/install/prerequisites.html depends_on('gmp@4.3.2:') @@ -92,6 +97,25 @@ class Gcc(AutotoolsPackage): depends_on('gnat', when='languages=ada') depends_on('binutils~libiberty', when='+binutils') depends_on('zip', type='build', when='languages=java') + depends_on('cuda', when='+nvptx') + + resource( + name='newlib', + url='ftp://sourceware.org/pub/newlib/newlib-3.0.0.20180831.tar.gz', + sha256='3ad3664f227357df15ff34e954bfd9f501009a647667cd307bf0658aefd6eb5b', + destination='newlibsource', + when='+nvptx' + ) + + # nvptx-tools does not seem to work as a dependency, + # but does fine when the source is inside the gcc build directory + # nvptx-tools doesn't have any releases, so grabbing the last commit + resource( + name='nvptx-tools', + git='https://github.com/MentorEmbedded/nvptx-tools', + commit='5f6f343a302d620b0868edab376c00b15741e39e', + when='+nvptx' + ) # TODO: integrate these libraries. # depends_on('ppl') @@ -148,6 +172,16 @@ class Gcc(AutotoolsPackage): # See https://gcc.gnu.org/gcc-5/changes.html conflicts('languages=jit', when='@:4') + # NVPTX offloading supported in 7 and later by limited languages + conflicts('+nvptx', when='@:6', msg='NVPTX only supported in gcc 7 and above') + conflicts('languages=ada', when='+nvptx') + conflicts('languages=brig', when='+nvptx') + conflicts('languages=go', when='+nvptx') + conflicts('languages=java', when='+nvptx') + conflicts('languages=jit', when='+nvptx') + conflicts('languages=objc', when='+nvptx') + conflicts('languages=obj-c++', when='+nvptx') + if sys.platform == 'darwin': # Fix parallel build on APFS filesystem # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81797 @@ -267,8 +301,75 @@ class Gcc(AutotoolsPackage): if sys.platform == 'darwin': options.append('--with-build-config=bootstrap-debug') + # nvptx-none offloading for host compiler + if spec.satisfies('+nvptx'): + options.extend(['--enable-offload-targets=nvptx-none', + '--with-cuda-driver-include={0}'.format( + spec['cuda'].prefix.include), + '--with-cuda-driver-lib={0}'.format( + spec['cuda'].libs.directories[0]), + '--disable-bootstrap', + '--disable-multilib']) + return options + # run configure/make/make(install) for the nvptx-none target + # before running the host compiler phases + @when('+nvptx') + @run_before('configure') + def nvptx_install(self): + spec = self.spec + prefix = self.prefix + + # config.guess returns the host triple, e.g. "x86_64-pc-linux-gnu" + guess = Executable('./config.guess') + targetguess = guess(output=str).rstrip('\n') + + options = getattr(self, 'configure_flag_args', []) + options += ['--prefix={0}'.format(prefix)] + + options += [ + '--with-cuda-driver-include={0}'.format( + spec['cuda'].prefix.include), + '--with-cuda-driver-lib={0}'.format( + spec['cuda'].libs.directories[0]), + ] + + with working_dir('nvptx-tools'): + configure = Executable("./configure") + configure(*options) + make() + make('install') + + pattern = join_path(self.stage.source_path, 'newlibsource', '*') + files = glob.glob(pattern) + + if files: + symlink(join_path(files[0], 'newlib'), 'newlib') + + # self.build_directory = 'spack-build-nvptx' + with working_dir('spack-build-nvptx', create=True): + + options = ['--prefix={0}'.format(prefix), + '--enable-languages={0}'.format( + ','.join(spec.variants['languages'].value)), + '--with-mpfr={0}'.format(spec['mpfr'].prefix), + '--with-gmp={0}'.format(spec['gmp'].prefix), + '--target=nvptx-none', + '--with-build-time-tools={0}'.format( + join_path(prefix, + 'nvptx-none', 'bin')), + '--enable-as-accelerator-for={0}'.format( + targetguess), + '--disable-sjlj-exceptions', + '--enable-newlib-io-long-long', + ] + + configure = Executable("../configure") + configure(*options) + make() + make('install') + @property def build_targets(self): if sys.platform == 'darwin': -- cgit v1.2.3-70-g09d2