add GPU-compatible linear solver amgx

src/dfMatrix/solver/amgx/CMakeLists.txt

@@ -0,0 +1,86 @@
+cmake_minimum_required(VERSION 3.5)
+project(AMGX)
+FIND_PACKAGE(CUDA REQUIRED)
+FIND_PACKAGE(MPI REQUIRED)
+
+# set variables
+set(CMAKE_INSTALL_PREFIX $ENV{FOAM_USER_LIBBIN}/..)
+set(AMGX_DIR $ENV{AMGX_DIR})
+set(OpenFOAM_SRC $ENV{FOAM_SRC})
+set ( CUDA_ENABLE true )
+if ( CUDA_ENABLE )
+    enable_language( CUDA )
+endif()
+
+# add library foam2csr
+set(SRC_LIST 
+foam2csr/AmgXCSRMatrix.cu 
+foam2csr/AmgXMPIComms.cu 
+foam2csr/AmgXSolver.cu)
+add_library(foam_csr SHARED ${SRC_LIST})
+
+target_include_directories(foam_csr
+    PUBLIC
+        foam2csr
+        ${MPI_INCLUDE_PATH}
+        ${CUDA_INCLUDE_DIRS}
+        ${AMGX_DIR}/include
+)
+target_link_libraries(foam_csr
+    PUBLIC    
+        ${CUDA_LIBRARIES}
+        ${MPI_LIBRARIES}
+        ${AMGX_DIR}/build/libamgxsh.so
+)
+
+# add library AMGX
+set(SOURCE
+    utils/linearSolverContextTable.C
+    utils/amgxLinearSolverContext.C
+    utils/cacheManager.C
+    amgxSolver.C)
+
+add_library(${PROJECT_NAME} SHARED ${SOURCE})
+
+set(LINK_FLAGS  "-Xlinker --add-needed -Xlinker --no-as-needed")
+set(CMAKE_SHARED_LINKER_FLAGS "${LINK_FLAGS}")
+set(CMAKE_EXE_LINKER_FLAGS "${LINK_FLAGS}")
+
+set(DEFINITIONS_COMPILE "-std=c++11 -DWM_ARCH_OPTION=64 -DWM_DP 
+-DWM_LABEL_SIZE=32 -Wall -Wextra -Wno-unused-parameter  
+-Wno-old-style-cas -Wno-overloaded-virtual -Wno-unused-variable 
+-Wno-unused-local-typedef -Wno-invalid-offsetof -Wno-deprecated-register 
+-Wno-undefined-var-template -O0 -g -DFULLDEBUG -DNoRepository 
+-ftemplate-depth-100 -fPIC")
+
+target_compile_options(${PROJECT_NAME}
+    PRIVATE
+        -std=c++11 -DWM_ARCH_OPTION=64 -DWM_DP 
+        -DWM_LABEL_SIZE=32 -Wall -Wextra -Wno-unused-parameter  
+        -Wno-overloaded-virtual -Wno-unused-local-typedef 
+        -Wno-invalid-offsetof -O3 -g -DFULLDEBUG -DNoRepository 
+        -ftemplate-depth-100 -fPIC)
+
+target_include_directories(${PROJECT_NAME}
+    PRIVATE
+        foam2csr
+        utils
+        ${OpenFOAM_SRC}/finiteVolume/lnInclude
+        ${OpenFOAM_SRC}/OSspecific/POSIX/lnInclude
+        ${OpenFOAM_SRC}/OpenFOAM/lnInclude
+        ${OpenFOAM_SRC}/meshTools/lnInclude
+        ${OpenFOAM_SRC}/Pstream/mpi
+)
+
+SET(CMAKE_C_COMPILER g++)
+add_compile_options(-std=c++14)
+
+target_link_libraries(${PROJECT_NAME} ${CUDA_LIBRARIES})
+target_link_libraries(${PROJECT_NAME} ${MPI_LIBRARIES})
+target_link_libraries(${PROJECT_NAME} ${AMGX_DIR}/build/libamgxsh.so)
+target_link_libraries(${PROJECT_NAME} $ENV{FOAM_LIBBIN}/libfiniteVolume.so libmeshTools.so)
+target_link_libraries(${PROJECT_NAME} foam_csr)
+
+# install(TARGETS foam_csr DESTINATION 
+# PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE 
+# GROUP_READ GROUP_WRITE GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)