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# Copyright 2013-2021 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)
# Troubleshooting advice for +rocm builds:
#
# 1. When building with clang, go your compilers.yaml,
# add an entry for the amd version of clang, as below.
# This will ensure that your entire package is compiled/linked
# with the same compiler version. If you use a different version of
# clang which is linked against a different version of the gcc library,
# you will get errors along the lines of:
# undefined reference to
# `std::__throw_out_of_range_fmt(char const*, ...)@@GLIBCXX_3.4.20'
# which is indicative of a mismatch in standard library versions.
#
# in compilers.yaml
# - compiler:
# spec: clang@amd
# paths:
# cc: /opt/rocm/llvm/bin/clang
# cxx: /opt/rocm/llvm/bin/clang++
# f77:
# fc:
# flags: {}
# operating_system: rhel7
# target: x86_64
# modules: []
# environment: {}
# extra_rpaths: []
#
#
# 2. hip and its dependencies are currently NOT picked up by spack
# automatically, and should therefore be added to packages.yaml by hand:
#
# in packages.yaml:
# hip:
# externals:
# - spec: hip@3.8.20371-d1886b0b
# prefix: /opt/rocm/hip
# extra_attributes:
# compilers:
# c: /opt/rocm/llvm/bin/clang++
# c++: /opt/rocm/llvm/bin/clang++
# hip: /opt/rocm/hip/bin/hipcc
# buildable: false
# hsa-rocr-dev:
# externals:
# - spec: hsa-rocr-dev
# prefix: /opt/rocm
# extra_attributes:
# compilers:
# c: /opt/rocm/llvm/bin/clang++
# cxx: /opt/rocm/llvm/bin/clang++
# buildable: false
# llvm-amdgpu:
# externals:
# - spec: llvm-amdgpu
# prefix: /opt/rocm/llvm
# extra_attributes:
# compilers:
# c: /opt/rocm/llvm/bin/clang++
# cxx: /opt/rocm/llvm/bin/clang++
# buildable: false
#
# 3. In part 2, DO NOT list the path to hsa as /opt/rocm/hsa ! You want spack
# to find hsa in /opt/rocm/include/hsa/hsa.h . The directory of
# /opt/rocm/hsa also has an hsa.h file, but it won't be found because spack
# does not like its directory structure.
#
from spack.package import PackageBase
from spack.directives import depends_on, variant, conflicts
import spack.variant
class ROCmPackage(PackageBase):
"""Auxiliary class which contains ROCm variant, dependencies and conflicts
and is meant to unify and facilitate its usage. Closely mimics CudaPackage.
Maintainers: dtaller
"""
# https://llvm.org/docs/AMDGPUUsage.html
# Possible architectures
amdgpu_targets = (
'gfx701', 'gfx801', 'gfx802', 'gfx803',
'gfx900', 'gfx906', 'gfx908', 'gfx1010',
'gfx1011', 'gfx1012'
)
variant('rocm', default=False, description='Enable ROCm support')
# possible amd gpu targets for rocm builds
variant('amdgpu_target',
description='AMD GPU architecture',
values=spack.variant.any_combination_of(*amdgpu_targets))
depends_on('llvm-amdgpu', when='+rocm')
depends_on('hsa-rocr-dev', when='+rocm')
depends_on('hip', when='+rocm')
conflicts('^blt@:0.3.6', when='+rocm')
# need amd gpu type for rocm builds
conflicts('amdgpu_target=none', when='+rocm')
# Make sure amdgpu_targets cannot be used without +rocm
for value in amdgpu_targets:
conflicts('~rocm', when='amdgpu_target=' + value)
# https://github.com/ROCm-Developer-Tools/HIP/blob/master/bin/hipcc
# It seems that hip-clang does not (yet?) accept this flag, in which case
# we will still need to set the HCC_AMDGPU_TARGET environment flag in the
# hip package file. But I will leave this here for future development.
@staticmethod
def hip_flags(amdgpu_target):
archs = ",".join(amdgpu_target)
return '--amdgpu-target={0}'.format(archs)
# HIP version vs Architecture
# TODO: add a bunch of lines like:
# depends_on('hip@:6.0', when='amdgpu_target=gfx701')
# to indicate minimum version for each architecture.
# Compiler conflicts
# TODO: add conflicts statements along the lines of
# arch_platform = ' target=x86_64: platform=linux'
# conflicts('%gcc@5:', when='+cuda ^cuda@:7.5' + arch_platform)
# conflicts('platform=darwin', when='+cuda ^cuda@11.0.2:')
# for hip-related limitations.
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