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CMakeLists.txt
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#------------------------------------------------------------------------------#
# Copyright 2024 Kitware, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#------------------------------------------------------------------------------#
cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
#------------------------------------------------------------------------------#
# Version information
#------------------------------------------------------------------------------#
# the Legion/Realm version string is set by the first of these that works:
# 1) a defined value for the cmake Legion_VERSION variable
# 2) the output of `git describe`, if successful
# 3) the contents of 'VERSION' (at the root of the source tree), if available
# 4) "unknown", if all else fails
set(Legion_VERSION "" CACHE STRING "string to use for Legion/Realm version")
if(Legion_VERSION STREQUAL "")
find_package(Git)
if(GIT_FOUND)
execute_process(COMMAND ${GIT_EXECUTABLE} describe --dirty --match legion*
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
RESULT_VARIABLE _git_result
OUTPUT_VARIABLE Legion_VERSION
ERROR_QUIET
OUTPUT_STRIP_TRAILING_WHITESPACE)
else()
set(_git_result -1)
endif()
if(_git_result EQUAL 0)
message(STATUS "Version string from git: ${Legion_VERSION}")
else()
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/VERSION)
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/VERSION _file_contents)
string(STRIP "${_file_contents}" Legion_VERSION)
unset(_file_contents)
message(STATUS "Version string from VERSION file: ${Legion_VERSION}")
else()
set(Legion_VERSION "unknown")
message(WARNING "Could not determine version string - using 'unknown'")
endif()
endif()
unset(_git_result)
endif()
# these are the actual variables that are written into the headers
set(LEGION_VERSION "${Legion_VERSION}")
set(REALM_VERSION "${Legion_VERSION}")
# Parse the major.minor.patch from (potentially non-semver) Legion_VERSION
if(Legion_VERSION MATCHES "([0-9]+)\\.([0-9]+)\\.([0-9]+)") # get the CMake version
set(Legion_VERSION_MAJOR "${CMAKE_MATCH_1}")
set(Legion_VERSION_MINOR "${CMAKE_MATCH_2}")
set(Legion_VERSION_PATCH "${CMAKE_MATCH_3}")
if(NOT Legion_VERSION_MAJOR VERSION_EQUAL 0)
string(REGEX REPLACE "^0+" "" Legion_VERSION_MAJOR "${Legion_VERSION_MAJOR}")
endif()
if(NOT Legion_VERSION_MINOR VERSION_EQUAL 0)
string(REGEX REPLACE "^0+" "" Legion_VERSION_MINOR "${Legion_VERSION_MINOR}")
endif()
if(NOT Legion_VERSION_PATCH VERSION_EQUAL 0)
string(REGEX REPLACE "^0+" "" Legion_VERSION_PATCH "${Legion_VERSION_PATCH}")
endif()
set(Legion_VERSION "${Legion_VERSION_MAJOR}.${Legion_VERSION_MINOR}.${Legion_VERSION_PATCH}")
else()
message(WARNING "Could not parse semver-compatible version from Legion version string '${Legion_VERSION}' - setting cmake package version to '0.0.0'")
set(Legion_VERSION "0.0.0")
endif()
project(Legion VERSION ${Legion_VERSION})
include(CMakeDependentOption)
#------------------------------------------------------------------------------#
# Some boilerplate to setup nice output directories
#------------------------------------------------------------------------------#
#for multilib distros
include(GNUInstallDirs)
list(INSERT CMAKE_MODULE_PATH 0 "${Legion_SOURCE_DIR}/cmake")
if(NOT CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${Legion_BINARY_DIR}/lib)
endif()
if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${Legion_BINARY_DIR}/lib)
endif()
if(NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${Legion_BINARY_DIR}/bin)
endif()
#library api version, bump from time to time
set(SOVERSION 1)
set(INSTALL_SUFFIX "" CACHE STRING "Suffix to add to installed libraries and binaries")
#------------------------------------------------------------------------------#
# C++ standard version
#------------------------------------------------------------------------------#
if(CMAKE_CXX_STANDARD)
# Legion requires a minimum of C++ 17
if(CMAKE_CXX_STANDARD LESS 17 OR CMAKE_CXX_STANDARD EQUAL 98)
message(FATAL_ERROR "Legion requires at least C++ 17")
endif()
else()
set(CMAKE_CXX_STANDARD 17)
endif()
set(CMAKE_CXX_STANDARD_REQUIRED ON)
#------------------------------------------------------------------------------#
# Build type and shared vs static library
#------------------------------------------------------------------------------#
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build" FORCE)
endif(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CXX_FLAGS)
if (CMAKE_BUILD_TYPE AND ( CMAKE_BUILD_TYPE STREQUAL "Debug"))
# define variable for realm_defines.h
set(DEBUG_REALM ON)
# define variable for legion_defines.h
set(DEBUG_LEGION ON)
endif()
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Whether or not to build shared libraries instead of static")
#------------------------------------------------------------------------------#
# Architecture
#------------------------------------------------------------------------------#
if(BUILD_MARCH AND BUILD_MCPU)
message(FATAL_ERROR "BUILD_MARCH and BUILD_MCPU are incompatible")
endif()
# Try -march first. On platforms that don't support it, GCC will issue
# a hard error, so we'll know not to use it.
# Default is "native", but explicitly setting BUILD_MARCH="" disables use of
# the flag
if(BUILD_MARCH)
set(INTERNAL_BUILD_MARCH ${BUILD_MARCH})
elseif(NOT DEFINED BUILD_MARCH)
set(INTERNAL_BUILD_MARCH "native")
endif()
include(CheckCXXCompilerFlag)
if(INTERNAL_BUILD_MARCH)
check_cxx_compiler_flag("-march=${INTERNAL_BUILD_MARCH}" COMPILER_SUPPORTS_MARCH)
if(COMPILER_SUPPORTS_MARCH)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=${INTERNAL_BUILD_MARCH}")
elseif(BUILD_MARCH)
message(FATAL_ERROR "The flag -march=${INTERNAL_BUILD_MARCH} is not supported by the compiler")
else()
unset(INTERNAL_BUILD_MARCH)
endif()
endif()
# Try -mcpu. We do this second because it is deprecated on x86, but
# GCC won't issue a hard error, so we can't tell if it worked or not.
if (NOT INTERNAL_BUILD_MARCH AND NOT DEFINED BUILD_MARCH)
if(BUILD_MCPU)
set(INTERNAL_BUILD_MCPU ${BUILD_MCPU})
else()
set(INTERNAL_BUILD_MCPU "native")
endif()
check_cxx_compiler_flag("-mcpu=${INTERNAL_BUILD_MCPU}" COMPILER_SUPPORTS_MCPU)
if(COMPILER_SUPPORTS_MCPU)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=${INTERNAL_BUILD_MCPU}")
elseif(BUILD_MCPU)
message(FATAL_ERROR "The flag -mcpu=${INTERNAL_BUILD_MCPU} is not supported by the compiler")
else()
unset(INTERNAL_BUILD_MCPU)
endif()
endif()
# Add flags for Power architectures
check_cxx_compiler_flag("-maltivec -Werror" COMPILER_SUPPORTS_MALTIVEC)
if(COMPILER_SUPPORTS_MALTIVEC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maltivec")
endif()
check_cxx_compiler_flag("-mabi=altivec -Werror" COMPILER_SUPPORTS_MABI_ALTIVEC)
if(COMPILER_SUPPORTS_MABI_ALTIVEC)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mabi=altivec")
endif()
check_cxx_compiler_flag("-mvsx -Werror" COMPILER_SUPPORTS_MVSX)
if(COMPILER_SUPPORTS_MVSX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mvsx")
endif()
# detect use of the cxx_defcheck wrapper and enable build checks
check_cxx_compiler_flag("--defcheck __test__" COMPILER_SUPPORTS_DEFCHECK)
# task registration across nodes often relies on being able to map function
# pointers back to symbol names, so ask cmake to export symbols in binaries
set(CMAKE_ENABLE_EXPORTS ON)
#------------------------------------------------------------------------------#
# Optimizations
#------------------------------------------------------------------------------#
# For now we want the optimization flags to match on both normal make and cmake
# builds so we override the cmake defaults here for release, this changes
# -O3 to -O2 and removes -DNDEBUG
set(CMAKE_CXX_FLAGS_RELEASE "-O2")
set(CMAKE_CUDA_FLAGS_RELEASE "-O2")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O2 -g")
set(CMAKE_CUDA_FLAGS_RELWITHDEBINFO "-O2 -g")
# add build types for thread/ub sanitizer goodness
set(CMAKE_CXX_FLAGS_TSAN
"${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=thread -DTSAN_ENABLED"
CACHE STRING "additional C++ compiler flags for thread sanitizer" FORCE)
set(CMAKE_EXE_LINKER_FLAGS_TSAN
"${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=thread"
CACHE STRING "additional linker flags for thread sanitizer" FORCE)
set(CMAKE_CXX_FLAGS_UBSAN
"${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=undefined"
CACHE STRING "additional C++ compiler flags for UB sanitizer" FORCE)
set(CMAKE_EXE_LINKER_FLAGS_UBSAN
"${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=undefined"
CACHE STRING "additional linker flags for UB sanitizer" FORCE)
set(CMAKE_CXX_FLAGS_ASAN
"${CMAKE_CXX_FLAGS_DEBUG} -fsanitize=address -DASAN_ENABLED"
CACHE STRING "additional C++ compiler flags for address sanitizer" FORCE)
set(CMAKE_EXE_LINKER_FLAGS_ASAN
"${CMAKE_EXE_LINKER_FLAGS_DEBUG} -fsanitize=address"
CACHE STRING "additional linker flags for address sanitizer" FORCE)
# if requested (and we know how to) make any warnings during the build fatal
option(Legion_BUILD_WARN_AS_ERROR "Consider warnings during build of Legion to be fatal errors" OFF)
if(Legion_BUILD_WARN_AS_ERROR)
check_cxx_compiler_flag("-Wall -Werror" COMPILER_SUPPORTS_WALL_WERROR)
if(COMPILER_SUPPORTS_WALL_WERROR)
set(CXX_BUILD_WARNING_FLAGS -Wall -Werror)
else()
message(FATAL_ERROR "cannot determine how to convert warnings to errors in C++ compiler")
endif()
else()
set(CXX_BUILD_WARNING_FLAGS "")
endif()
if ((MSVC) AND (MSVC_VERSION GREATER_EQUAL 1914))
check_cxx_compiler_flag("/Zc:__cplusplus" COMPILER_SUPPORTS_ZC_CPLUSPLUS)
if(COMPILER_SUPPORTS_ZC_CPLUSPLUS)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /Zc:__cplusplus")
else()
message(FATAL_ERROR "compiler (which appears to be msvc) did not accept /Zc:__cplusplus flag")
endif()
endif()
include(CheckFunctionExists)
#------------------------------------------------------------------------------#
# Documentation options
#------------------------------------------------------------------------------#
option(Legion_BUILD_DOCS "Build documentation" OFF)
cmake_dependent_option(Legion_BUILD_INTERNAL_DOCS "Build documentation" OFF
"Legion_BUILD_DOCS" OFF)
if (Legion_BUILD_DOCS)
find_package(Doxygen REQUIRED)
set(DOXYGEN_GENERATE_HTML YES)
set(DOXYGEN_EXTRACT_ALL YES)
set(DOXYGEN_SEARCH_INCLUDES YES)
set(DOXYGEN_ENABLE_PREPROCESSING YES)
set(DOXYGEN_RECURSIVE YES)
set(DOXYGEN_HTML_HEADER ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/header.html)
set(DOXYGEN_HTML_FOOTER ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/footer.html)
set(DOXYGEN_HTML_EXTRA_STYLESHEET ${CMAKE_CURRENT_SOURCE_DIR}/doxygen/customdoxygen.css)
if (Legion_BUILD_INTERNAL_DOCS)
set(DOXYGEN_INTERNAL_DOCS ${Legion_BUILD_INTERNAL_DOCS})
set(DOXYGEN_ENABLED_SECTIONS INTERNAL)
endif()
endif()
#------------------------------------------------------------------------------#
# Minimum log level
#------------------------------------------------------------------------------#
set(Legion_OUTPUT_LEVEL "DEBUG" CACHE STRING "Compile time logging level")
set_property(CACHE Legion_OUTPUT_LEVEL PROPERTY STRINGS SPEW DEBUG INFO PRINT WARNING ERROR FATAL NONE)
# define variable for realm_defines.h
set(COMPILE_TIME_MIN_LEVEL LEVEL_${Legion_OUTPUT_LEVEL})
#------------------------------------------------------------------------------#
# OpenMP
#------------------------------------------------------------------------------#
option(Legion_USE_OpenMP "Use OpenMP" OFF)
if(Legion_USE_OpenMP)
option(Legion_OpenMP_SYSTEM_RUNTIME "Use system's OpenMP runtime instead of internal Realm version" OFF)
if(Legion_OpenMP_SYSTEM_RUNTIME)
find_package(OpenMP REQUIRED)
endif()
option(Legion_OpenMP_GOMP_SUPPORT "Enable GOMP support for OpenMP" ON)
option(Legion_OpenMP_KMP_SUPPORT "Enable KMP support for OpenMP" ON)
# define variable for realm_defines.h
set(REALM_USE_OPENMP ON)
if(Legion_OpenMP_SYSTEM_RUNTIME)
set(REALM_OPENMP_SYSTEM_RUNTIME ON)
endif()
if(Legion_OpenMP_GOMP_SUPPORT)
set(REALM_OPENMP_GOMP_SUPPORT ON)
endif()
if(Legion_OpenMP_KMP_SUPPORT)
set(REALM_OPENMP_KMP_SUPPORT ON)
endif()
endif()
#------------------------------------------------------------------------------#
# Python
#------------------------------------------------------------------------------#
option(Legion_USE_Python "Use Python" OFF)
if(Legion_USE_Python)
find_package(Python3 REQUIRED)
# Unset empty Python3_ variables
get_cmake_property(_variableNames VARIABLES)
foreach (_variableName ${_variableNames})
if ((_variableName MATCHES "Python3_") AND (${_variableName} STREQUAL ""))
unset(${_variableName})
endif()
endforeach()
# define variables for realm_defines.h
set(REALM_USE_PYTHON ON)
endif()
set(BINDINGS_DEFAULT_MODULE "" CACHE STRING "module to load by default in Python bindings, if any")
#------------------------------------------------------------------------------#
# Kokkos configuration
#------------------------------------------------------------------------------#
option(Legion_USE_Kokkos "Enable support for the Kokkos runtime" OFF)
if(Legion_USE_Kokkos)
# cmake uses -DKokkos_DIR=.../lib/cmake to look in non-standard locations
#
# starting with Kokkos 3.3.0, including a cuda-enabled Kokkos will mess with
# the global compilation settings unless you ask it not to by requesting
# the 'separable_compilation' component
find_package(Kokkos REQUIRED OPTIONAL_COMPONENTS separable_compilation)
message(STATUS "Kokkos version: ${Kokkos_VERSION}")
# in order to build using Kokkos' exported compile options, we need to use
# the same compiler - newer versions of Kokkos will tell us, but for older
# versions, we need it from the configuration or the environment
if(Kokkos_CXX_COMPILER)
set(KOKKOS_CXX_COMPILER ${Kokkos_CXX_COMPILER} CACHE STRING
"C++ compiler used by Kokkos")
else()
set(KOKKOS_CXX_COMPILER $ENV{KOKKOS_CXX_COMPILER} CACHE STRING
"C++ compiler used by Kokkos")
endif()
if(NOT KOKKOS_CXX_COMPILER)
message(FATAL_ERROR "to build correctly with Kokkos, the exact compiler used in the Kokkos build (typically set via CXX=... or -DCMAKE_CXX_COMPILER=...) must be provided in KOKKOS_CXX_COMPILER (either on the command line or from the environment)")
endif()
set(REALM_USE_KOKKOS ON)
endif()
#------------------------------------------------------------------------------#
# libdl configuration
#------------------------------------------------------------------------------#
# NOTE: although the name of the variable is "libdl", this is dynamic linking
# support on any system, even if it doesn't have a libdl
option(Legion_USE_LIBDL "Enable run-time support for dynamic shared objects" ON)
if(Legion_USE_LIBDL)
# define variable for legion_defines.h
set(LEGION_USE_LIBDL ON)
# define variable for realm_defines.h
set(REALM_USE_LIBDL ON)
endif()
#------------------------------------------------------------------------------#
# network interface configuration
#------------------------------------------------------------------------------#
set(Legion_NETWORKS "" CACHE STRING "Network backend(s) to use")
separate_arguments(Legion_NETWORKS)
# compatibility mode - Legion_USE_GASNet==ON -> Legion_NETWORKS=gasnet1
option(Legion_USE_GASNet "Enable the distributed GASNet backend" OFF)
if(Legion_USE_GASNet)
list(APPEND Legion_NETWORKS gasnet1)
endif()
#------------------------------------------------------------------------------#
# GASNet configuration
#------------------------------------------------------------------------------#
if("${Legion_NETWORKS}" MATCHES ".*gasnet(1|ex).*")
option(Legion_EMBED_GASNet "Embed a custom GASNet build in Realm library" OFF)
if(Legion_EMBED_GASNet)
if(NOT GASNet_CONDUIT)
message(FATAL_ERROR "GASNet_CONDUIT must be set when using an embedded GASNet build")
endif()
# an embedded GASNet uses the stanfordlegion/gasnet helper repository for
# a build wrapper and curated-for-Legion GASNet configurations - it can
# be fetched from github directly (the default) or use a local (and
# perhaps modified) clone of the repository
set(Legion_EMBED_GASNet_GITREPO
"https://github.com/StanfordLegion/gasnet.git"
CACHE STRING "URL for cloning StanfordLegion/gasnet repository")
set(GASNet_GITREPO ${Legion_EMBED_GASNet_GITREPO})
set(Legion_EMBED_GASNet_GITREF
"f356a41a43a67c63eb230a74931196434ba1212e" # master as of 2024-11-11
CACHE STRING "Branch/tag/commit to use from StanfordLegion/gasnet repository")
set(GASNet_GITREF ${Legion_EMBED_GASNet_GITREF})
set(Legion_EMBED_GASNet_LOCALSRC "" CACHE STRING "Path to local clone of StanfordLegion/gasnet repository")
set(GASNet_LOCALSRC ${Legion_EMBED_GASNet_LOCALSRC})
set(Legion_EMBED_GASNet_VERSION "" CACHE STRING "Override GASNet version to build")
set(GASNet_VERSION ${Legion_EMBED_GASNet_VERSION})
set(Legion_EMBED_GASNet_CONFIGURE_ARGS "" CACHE STRING "Extra configuration arguments for GASNet")
set(GASNet_CONFIGURE_ARGS ${Legion_EMBED_GASNet_CONFIGURE_ARGS})
option(Legion_EMBED_GASNet_ENABLE_GPU_MEMORY_KINDS "Enable GASNet memory kinds when Realm has been built with CUDA/HIP/etc." ON)
else()
set(GASNet_THREADING par)
set(GASNet_PREFERRED_CONDUITS aries gemini ibv)
find_package(GASNet REQUIRED)
if(NOT GASNet_THREADING STREQUAL "par")
message(FATAL_ERROR "GASNet threading mode \"${GASNet_THREADING}\" is not currently supported by Legion")
endif()
endif()
# define variable for realm_defines.h
if("${Legion_NETWORKS}" MATCHES .*gasnetex.*)
set(REALM_USE_GASNETEX ON)
# wether to build gasnetex wrapper as a standalone library
option(Legion_USE_GASNETEX_WRAPPER "Enable gasnetex wrapper" OFF)
if (Legion_USE_GASNETEX_WRAPPER)
set(REALM_USE_GASNETEX_WRAPPER ON)
endif()
else()
set(REALM_USE_GASNET1 ON)
endif()
string(TOUPPER ${GASNet_CONDUIT} CONDUIT)
set(GASNET_CONDUIT_${CONDUIT} ON)
# conduits other than udp support MPI interop
if(NOT ${GASNet_CONDUIT} STREQUAL "udp")
set(Legion_MPI_INTEROP ON)
endif()
endif()
#------------------------------------------------------------------------------#
# MPI configuration
#------------------------------------------------------------------------------#
if("${Legion_NETWORKS}" MATCHES .*mpi.*)
find_package(MPI REQUIRED)
# define variable for realm_defines.h
set(REALM_USE_MPI ON)
set(Legion_MPI_INTEROP ON)
endif()
#------------------------------------------------------------------------------#
# UCX configuration
#------------------------------------------------------------------------------#
if("${Legion_NETWORKS}" MATCHES .*ucx.*)
if (NOT REALM_USE_LIBDL)
message(FATAL_ERROR "UCX backend requires run-time support for dynamic shared objects")
endif()
find_package(ucx 1.14.0 REQUIRED CONFIG)
message(STATUS "Found UCX: ${UCX_INCLUDE_DIRS} ${UCX_LIBRARIES})")
find_package(MPI REQUIRED) # for MPI bootstrap plugin
# define variable for realm_defines.h
set(REALM_USE_UCX ON)
set(Legion_MPI_INTEROP ON)
option(Legion_UCX_DYNAMIC_LOAD "Load ucx libraries at runtime" OFF)
if(Legion_UCX_DYNAMIC_LOAD)
set(REALM_UCX_DYNAMIC_LOAD ON)
endif()
endif()
if (MPI_FOUND)
list(APPEND CMAKE_REQUIRED_LIBRARIES ${MPI_mpi_LIBRARY})
# Check if MPI has comm split type available
check_function_exists(MPI_Comm_split_type REALM_MPI_HAS_COMM_SPLIT_TYPE)
list(POP_BACK CMAKE_REQUIRED_LIBRARIES)
endif()
#------------------------------------------------------------------------------#
# GPU configuration
#------------------------------------------------------------------------------#
option(Legion_USE_CUDA "Enable support for the CUDA runtime" OFF)
option(Legion_USE_HIP "Enable support for the HIP runtime on AMD/NVIDIA GPU" OFF)
set(Legion_HIP_TARGETS "ROCM" "CUDA")
mark_as_advanced(Legion_HIP_TARGETS)
set(Legion_HIP_TARGET "ROCM" CACHE STRING "Select HIP target ${Legion_HIP_TARGETS}")
set_property(CACHE Legion_HIP_TARGET PROPERTY STRINGS ${Legion_HIP_TARGETS})
if(Legion_USE_CUDA OR Legion_USE_HIP)
option(Legion_GPU_REDUCTIONS "Use tasks to perform reductions on GPU" OFF)
# define variable for legion_defines.h
set(LEGION_GPU_REDUCTIONS ${Legion_GPU_REDUCTIONS})
if(Legion_USE_CUDA OR (Legion_HIP_TARGET STREQUAL "CUDA"))
include(cmake/cuda_helpers.cmake)
# Read CMAKE_CUDA_STANDARD or CMAKE_CXX_STANDARD and store in Legion_CUDA_STANDARD
infer_cuda_standard(Legion_CUDA_STANDARD)
set(Legion_CUDA_STANDARD "${Legion_CUDA_STANDARD}" CACHE STRING
"The CUDA C++ standard to use (17, 20, etc.)"
FORCE)
# Enable the CUDA language and find the CUDA toolkit
enable_cuda_language_and_find_cuda_toolkit()
# Populate the Legion_CUDA_ARCH list, defaulting to all major GPU archs if unset
populate_cuda_archs_list(Legion_CUDA_ARCH)
set(Legion_CUDA_ARCH "${Legion_CUDA_ARCH}" CACHE STRING
"Comma (or semicolon) separated list of CUDA architectures to build for (e.g. 60,70,80,90)"
FORCE)
#------------------------------------------------------------------------------#
# NVTX configuration
#------------------------------------------------------------------------------#
option(Legion_USE_NVTX "Enable profiling using NVTX" OFF)
# define variable for realm_defines.h
set(REALM_USE_NVTX ${Legion_USE_NVTX})
mark_as_advanced(REALM_USE_NVTX)
# Find the CUDA toolkit if we haven't already.
if(NOT CUDAToolkit_FOUND)
find_package(CUDAToolkit REQUIRED)
endif()
if("${CUDA_cuda_driver_LIBRARY}" MATCHES ".*stubs.*")
get_filename_component(_cuda_stubs_path "${CUDA_cuda_driver_LIBRARY}" DIRECTORY)
list(APPEND CMAKE_PLATFORM_IMPLICIT_LINK_DIRECTORIES "${_cuda_stubs_path}")
unset(_cuda_stubs_path)
endif()
# Install the vendored FindCUDAToolkit.cmake to support CMake < v3.19
install(FILES ${Legion_SOURCE_DIR}/cmake/FindCUDAToolkit.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
install(FILES ${Legion_SOURCE_DIR}/cmake/newcmake/FindCUDAToolkit.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake/newcmake
)
endif()
endif()
#------------------------------------------------------------------------------#
# CUDA configuration
#------------------------------------------------------------------------------#
if(Legion_USE_CUDA)
option(Legion_CUDA_DYNAMIC_LOAD "Load CUDA libraries at runtime" OFF)
# The default is to hijack unless Kokkos interop is enabled, or network is UCX.
if(Legion_USE_Kokkos OR "${Legion_NETWORKS}" MATCHES .*ucx.*)
option(Legion_HIJACK_CUDART "Hijack and rewrite application calls into the CUDA runtime" OFF)
else()
option(Legion_HIJACK_CUDART "Hijack and rewrite application calls into the CUDA runtime" ON)
endif()
if(Legion_CUDA_DYNAMIC_LOAD AND Legion_HIJACK_CUDART)
# not compatible with runtime hijack
message(FATAL_ERROR "Dynamic CUDA library loading (Legion_CUDA_DYNAMIC_LOAD) is not compatible with CUDA runtime hijack (Legion_HIJACK_CUDART)")
endif()
# define variable for legion_defines.h
set(LEGION_USE_CUDA ON)
# define variable for realm_defines.h
set(REALM_USE_CUDA ON)
set(REALM_CUDA_DYNAMIC_LOAD ${Legion_CUDA_DYNAMIC_LOAD})
set(REALM_USE_CUDART_HIJACK ${Legion_HIJACK_CUDART})
endif()
#------------------------------------------------------------------------------#
# HIP configuration
#------------------------------------------------------------------------------#
if(Legion_USE_HIP)
set(HIPCC_FLAGS ${HIPCC_FLAGS})
if(Legion_HIP_TARGET STREQUAL "CUDA")
list(APPEND HIPCC_FLAGS -D__HIP_PLATFORM_NVCC__)
elseif(Legion_HIP_TARGET STREQUAL "ROCM")
# find the hip library
find_package(HIP REQUIRED)
set(Legion_HIP_ARCH "" CACHE STRING "Comma-separated list of HIP architectures to build for (e.g. gfx906,gfx908)")
set(HIPCC_FLAGS "-fno-strict-aliasing")
if("${Legion_HIP_ARCH}" STREQUAL "")
set(HIP_GENCODE "")
else()
set(HIP_GENCODE "--offload-arch=${Legion_HIP_ARCH}")
endif()
if(BUILD_SHARED_LIBS)
list(APPEND HIPCC_FLAGS -fPIC)
endif()
list(APPEND HIPCC_FLAGS -std=c++${CMAKE_CXX_STANDARD})
install(FILES ${Legion_SOURCE_DIR}/cmake/FindHIP.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
endif()
option(Legion_HIJACK_HIP "Enable HIJACK HIP" ON)
# define variable for legion_defines.h
set(LEGION_USE_HIP ON)
# define variable for realm_defines.h
set(REALM_USE_HIP ON)
set(REALM_USE_HIP_HIJACK ${Legion_HIJACK_HIP})
endif()
#------------------------------------------------------------------------------#
# LLVM configuration
#------------------------------------------------------------------------------#
option(Legion_USE_LLVM "Use LLVM JIT operations" OFF)
option(Legion_ALLOW_MISSING_LLVM_LIBS "Allow LLVM libraries to be missing at runtime" OFF)
option(Legion_LINK_LLVM_LIBS "Link LLVM libraries into Realm" ON)
if(Legion_USE_LLVM)
set(Legion_LLVM_COMPONENTS irreader jit mcjit x86)
find_package(LLVM REQUIRED COMPONENTS ${Legion_LLVM_COMPONENTS})
install(FILES ${Legion_SOURCE_DIR}/cmake/FindLLVM.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
# define variables for realm_defines.h
set(REALM_USE_LLVM ON)
if(Legion_ALLOW_MISSING_LLVM_LIBS)
set(REALM_ALLOW_MISSING_LLVM_LIBS ON)
endif()
endif()
#------------------------------------------------------------------------------#
# HDF5 configuration
#------------------------------------------------------------------------------#
option(Legion_USE_HDF5 "Enable support for HDF5" OFF)
if(Legion_USE_HDF5)
find_package(HDF5 REQUIRED COMPONENTS C)
# define variable for both legion_defines.h and realm_defines.h
set(LEGION_USE_HDF5 ON)
set(REALM_USE_HDF5 ON)
endif()
#------------------------------------------------------------------------------#
# HWLOC configuration
#------------------------------------------------------------------------------#
option(Legion_USE_HWLOC "Use hwloc for topology awareness" OFF)
if(Legion_USE_HWLOC)
find_package(HWLOC REQUIRED)
install(FILES ${Legion_SOURCE_DIR}/cmake/FindHWLOC.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
set(REALM_USE_HWLOC ON)
endif()
#------------------------------------------------------------------------------#
# PAPI configuration
#------------------------------------------------------------------------------#
option(Legion_USE_PAPI "Use PAPI for performance measurements" OFF)
if(Legion_USE_PAPI)
# no FindPAPI in cmake by default, so just find the lib and include path
# ourselves
find_library(PAPI_LIBRARIES NAMES libpapi.so libpapi.a papi
HINTS ${PAPI_ROOT}/lib $ENV{PAPI_ROOT}/lib ENV PAPI_LIB_DIR)
find_path(PAPI_INCLUDE_DIRS NAMES papi.h
HINTS ${PAPI_ROOT}/include $ENV{PAPI_ROOT}/include ENV PAPI_INC_DIR)
if(PAPI_LIBRARIES AND PAPI_INCLUDE_DIRS)
set(REALM_USE_PAPI ON)
else()
message(FATAL_ERROR
" Could not find PAPI - set PAPI_{ROOT,INC_DIR,LIB_DIR} if needed -- got:\n"
" PAPI_LIBRARIES: ${PAPI_LIBRARIES}\n"
" PAPI_INCLUDE_DIRS: ${PAPI_INCLUDE_DIRS}")
endif()
endif()
#------------------------------------------------------------------------------#
# zlib configuration
#------------------------------------------------------------------------------#
if(NOT DEFINED Legion_USE_ZLIB)
# neither ON nor OFF at user's request, so use it if we can find it
find_package(ZLIB)
if(ZLIB_FOUND)
set(Legion_USE_ZLIB ON)
else()
set(Legion_USE_ZLIB OFF)
endif()
else()
set(Legion_USE_ZLIB "$CACHE{Legion_USE_ZLIB}")
endif()
set(Legion_USE_ZLIB "${Legion_USE_ZLIB}" CACHE BOOL "Enable support for zlib")
if(Legion_USE_ZLIB)
find_package(ZLIB REQUIRED)
# define variable for legion_defines.h
set(LEGION_USE_ZLIB ON)
endif()
#------------------------------------------------------------------------------#
# Fortran configuration
#------------------------------------------------------------------------------#
option(Legion_USE_Fortran "Enable support for Fortran" OFF)
if(Legion_USE_Fortran)
enable_language(Fortran)
set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -cpp")
endif()
#------------------------------------------------------------------------------#
# Backtrace configuration
#------------------------------------------------------------------------------#
option(Legion_BACKTRACE_USE_CPPTRACE "Use cpptrace to capture backtrace" OFF)
if(Legion_BACKTRACE_USE_CPPTRACE)
set(REALM_USE_CPPTRACE ON)
# TODO: move CPM outside when we download other packages through CPM
set(CPM_URL https://github.com/cpm-cmake/CPM.cmake/releases/download/v0.40.2/CPM.cmake)
file(
DOWNLOAD
${CPM_URL}
${CMAKE_CURRENT_BINARY_DIR}/cmake/CPM.cmake
)
include(${CMAKE_CURRENT_BINARY_DIR}/cmake/CPM.cmake)
CPMFindPackage(
NAME cpptrace
GIT_REPOSITORY https://github.com/jeremy-rifkin/cpptrace.git
GIT_TAG v0.7.3
)
endif()
#------------------------------------------------------------------------------#
# Miscelaneous other options
#------------------------------------------------------------------------------#
set(Legion_MAX_DIM 3 CACHE STRING "Maximum number of dimensions")
set_property(CACHE Legion_MAX_DIM PROPERTY STRINGS 1 2 3 4 5 6 7 8 9)
mark_as_advanced(Legion_MAX_DIM)
# define variable for legion_defines.h
set(LEGION_MAX_DIM ${Legion_MAX_DIM})
set(REALM_MAX_DIM ${Legion_MAX_DIM})
# legion uses statically-sized arrays for performance in some cases - make
# sure they're big enough for your use case
set(Legion_MAX_FIELDS 512 CACHE STRING
"Maximum number of fields allocated to a single field space -- MUST be a power of two.")
set(Legion_DEFAULT_LOCAL_FIELDS 4 CACHE STRING
"Number of slots in a field space reserved for local fields -- MUST be smaller than or equal to Legion_MAX_FIELDS")
set(Legion_MAX_NUM_NODES 1024 CACHE STRING
"Maximum number of nodes supported by the runtime -- MUST be a power of two.")
set(Legion_MAX_NUM_PROCS 64 CACHE STRING
"Maximum number of processors (per node) supported by the runtime -- MUST be a power of two.")
# check that they're all powers of two
function(is_power_of_two x ret)
set(${ret} FALSE PARENT_SCOPE)
if (${x} LESS_EQUAL 0)
return()
endif()
math(EXPR y "${x} & (${x} - 1)")
if (${y} EQUAL 0)
set(${ret} TRUE PARENT_SCOPE)
endif()
endfunction()
is_power_of_two(${Legion_MAX_FIELDS} is_pow_two)
if (NOT is_pow_two)
message(FATAL_ERROR "Legion_MAX_FIELDS must be a power of two.")
endif()
if (${Legion_DEFAULT_LOCAL_FIELDS} GREATER ${Legion_MAX_FIELDS})
message(FATAL_ERROR "Legion_DEFAULT_LOCAL_FIELDS must be smaller than or equal to Legion_MAX_FIELDS.")
endif()
is_power_of_two(${Legion_MAX_NUM_NODES} is_pow_two)
if (NOT is_pow_two)
message(FATAL_ERROR "Legion_MAX_NUM_NODES must be a power of two.")
endif()
is_power_of_two(${Legion_MAX_NUM_PROCS} is_pow_two)
if (NOT is_pow_two)
message(FATAL_ERROR "Legion_MAX_NUM_PROCS must be a power of two.")
endif()
# define variables for legion_defines.h
set(LEGION_MAX_FIELDS ${Legion_MAX_FIELDS})
set(LEGION_DEFAULT_LOCAL_FIELDS "(${Legion_DEFAULT_LOCAL_FIELDS})")
set(LEGION_MAX_NUM_NODES ${Legion_MAX_NUM_NODES})
set(LEGION_MAX_NUM_PROCS ${Legion_MAX_NUM_PROCS})
option(Legion_WARNINGS_FATAL "Make all runtime warnings fatal" OFF)
set(LEGION_WARNINGS_FATAL ${Legion_WARNINGS_FATAL})
option(Legion_SPY "Enable detailed logging for Legion Spy" OFF)
set(LEGION_SPY ${Legion_SPY})
option(Legion_BOUNDS_CHECKS "Enable bounds checking in Legion accessors" OFF)
set(LEGION_BOUNDS_CHECKS ${Legion_BOUNDS_CHECKS})
option(Legion_PRIVILEGE_CHECKS "Enable privilege checking in Legion accessors" OFF)
set(LEGION_PRIVILEGE_CHECKS ${Legion_PRIVILEGE_CHECKS})
# hiding internal symbols is much more complicated in Windows
if(NOT WIN32)
option(REALM_LIMIT_SYMBOL_VISIBILITY "hide private symbols in realm" ON)
endif()
# Only enable shm on linux and if GASNET1 is not available.
# OSX is not well tested yet, so disable by default for the time being
# GASNET1 does not allow communication before network attach, which is needed
# in order to coordinate a job identifier required to set up named system
# resources
if (UNIX AND NOT APPLE AND NOT REALM_USE_GASNET1)
option(REALM_USE_SHM "Enable shared memory usage" ON)
else()
option(REALM_USE_SHM "Enable shared memory usage" OFF)
endif()
if (UNIX)
# Look for posix_fallocate64 for better error reporting of file mapping
check_function_exists(posix_fallocate64 REALM_HAS_POSIX_FALLOCATE64)
endif ()
#------------------------------------------------------------------------------#
# Hacks for building only Realm
#------------------------------------------------------------------------------#
option(Legion_BUILD_REALM_ONLY "HACK: only build realm" OFF)
option(Legion_BUILD_REALM_TESTS "HACK: build realm-only tests" OFF)
#------------------------------------------------------------------------------#
# Runtime library targets
#------------------------------------------------------------------------------#
add_subdirectory(runtime)
#------------------------------------------------------------------------------#
# Tools
#------------------------------------------------------------------------------#
add_subdirectory(tools)
#------------------------------------------------------------------------------#
# Documentation
#------------------------------------------------------------------------------#
add_subdirectory(doc)
#------------------------------------------------------------------------------#
# configure header
#------------------------------------------------------------------------------#
# Checking for all defines in the CXX Flags
string(REPLACE " " ";" FLAGS_LIST "${CMAKE_CXX_FLAGS}")
FOREACH(FLAG ${FLAGS_LIST})
string (FIND ${FLAG} "-D" START_STR)
if (${START_STR} EQUAL "0")
string(REPLACE "-D" "" NEW_DEFINE ${FLAG})
set (${NEW_DEFINE} ON)
endif()
endforeach()
#------------------------------------------------------------------------------#
# Build-tree package generation
#------------------------------------------------------------------------------#
include(CMakePackageConfigHelpers)
export(EXPORT LegionTargets
NAMESPACE Legion::
FILE ${Legion_BINARY_DIR}/LegionTargets.cmake
)
install(EXPORT LegionTargets
NAMESPACE Legion::
FILE LegionTargets.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
configure_file(
cmake/LegionConfigCommon.cmake.in
${Legion_BINARY_DIR}/LegionConfigCommon.cmake
@ONLY
)
install(FILES ${Legion_BINARY_DIR}/LegionConfigCommon.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
configure_file(
cmake/LegionConfig-build.cmake.in
${Legion_BINARY_DIR}/LegionConfig.cmake
@ONLY
)
write_basic_package_version_file(
${Legion_BINARY_DIR}/LegionConfig-version.cmake
VERSION ${Legion_VERSION}
COMPATIBILITY ExactVersion)
install(FILES ${Legion_BINARY_DIR}/LegionConfig-version.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
)
install(FILES cmake/LegionConfig-install.cmake
DESTINATION ${CMAKE_INSTALL_DATADIR}/Legion/cmake
RENAME LegionConfig.cmake
)
#------------------------------------------------------------------------------#
# Install into the CMake pacakge registry if explicitly selected to do so
#------------------------------------------------------------------------------#
set(CMAKE_EXPORT_NO_PACKAGE_REGISTRY ON CACHE INTERNAL "Disable the export(PACKAGE) command.")
option(Legion_USE_PACKAGE_REGISTRY "Register the build tree with the CMake package registry" OFF)
mark_as_advanced(Legion_USE_PACKAGE_REGISTRY)
if(Legion_USE_PACKAGE_REGISTRY)
set(CMAKE_EXPORT_NO_PACKAGE_REGISTRY OFF)
endif()
export(PACKAGE Legion)
#------------------------------------------------------------------------------#
# Examples and Applications
#------------------------------------------------------------------------------#
option(Legion_BUILD_ALL "Build all Legion bindings, examples, tutorials and tests" OFF)
option(Legion_BUILD_APPS "Build Legion sample applications" OFF)
option(Legion_BUILD_BINDINGS "Build Legion language bindings" OFF)
option(Legion_BUILD_EXAMPLES "Build Legion examples" OFF)
option(Legion_BUILD_TUTORIAL "Build Legion tutorial" OFF)
option(Legion_BUILD_TESTS "Build Legion tests" OFF)
option(Legion_BUILD_JUPYTER "Build Legion jupyter notebook support" OFF)
option(Legion_ENABLE_TESTING "Build and copy testing stuff" OFF)
option(Legion_BUILD_RUST_PROFILER "Build Rust version of Legion profiler" OFF)
if(Legion_ENABLE_TESTING)
enable_testing()
# if Legion_TEST_LAUNCHER is set, split the string into a list
separate_arguments(Legion_TEST_LAUNCHER)
separate_arguments(Legion_TEST_ARGS)
# if we are using kokkos and cuda, we must hardcode the use of 1 gpu right now
if(Legion_USE_Kokkos AND Legion_USE_CUDA)
list(APPEND Legion_TEST_ARGS -ll:gpu 1)
endif()
# similar restrictions for openmp
if(Legion_USE_Kokkos AND Legion_USE_OpenMP)
list(APPEND Legion_TEST_ARGS -ll:ocpu 1 -ll:onuma 0)
endif()
endif()
add_library(Legion::Legion ALIAS Legion)
add_library(Legion::Realm ALIAS Realm)
if(Legion_BUILD_ALL OR Legion_BUILD_APPS OR Legion_BUILD_BINDINGS OR Legion_BUILD_EXAMPLES OR Legion_BUILD_TUTORIAL OR Legion_BUILD_TESTS)
if(Legion_HIP_TARGET STREQUAL "ROCM")
set(HIP_HIPCC_FLAGS "${HIP_HIPCC_FLAGS} ${HIPCC_FLAGS} ${HIP_GENCODE}")
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_APPS)
add_subdirectory(apps)
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_BINDINGS)
add_subdirectory(bindings)
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_EXAMPLES)
add_subdirectory(examples)
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_TUTORIAL)
add_subdirectory(tutorial)
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_TESTS)
add_subdirectory(test)
endif()
if(Legion_BUILD_ALL OR Legion_BUILD_JUPYTER)
add_subdirectory(jupyter_notebook)
endif()
elseif(Legion_BUILD_REALM_TESTS)
add_subdirectory(test/realm)
endif()
if(Legion_BUILD_REALM_UNIT_TESTS)
if (BUILD_SHARED_LIBS)
add_library(Legion::RealmTests ALIAS RealmStatic)
else()
add_library(Legion::RealmTests ALIAS Realm)
endif()
add_subdirectory(test/realm/unit_tests)
endif()
#------------------------------------------------------------------------------#
# Complex support
#------------------------------------------------------------------------------#
if(Legion_BUILD_ALL OR Legion_BUILD_BINDINGS)
option(Legion_REDOP_COMPLEX "Use reduction operators for complex types" ON)
else()