ROM App

.github/workflows/regression.yaml

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+name: Regression Tests
+
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches: [main]
+  workflow_dispatch:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  run-tests:
+    runs-on: [self-hosted]
+    strategy:
+      fail-fast: false
+    steps:
+      - name: checkout testapp
+        uses: actions/checkout@v4
+      - name: checkout opensn
+        uses: actions/checkout@v4
+        with:
+          repository: Open-Sn/opensn
+          path: opensn
+      - name: install opensn
+        shell: bash
+        run: |
+          module load opensn/clang/17 python3/3.12.3
+          cd opensn && mkdir build && mkdir install && cd build 
+          cmake -DCMAKE_INSTALL_PREFIX=../install .. && make -j && make install
+      - name: compile app
+        shell: bash
+        run: |
+          module load opensn/clang/17 python3/3.12.3
+          cd OpenSnApp && mkdir build && cd build
+          cmake -DCMAKE_PREFIX_PATH=../../opensn/install .. && make -j
+      - name: test examples
+        shell: bash
+        run: |
+          module load opensn/clang/17 python3/3.12.3
+          cd examples/reed && python run_rom_reed.py

.gitignore

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+.git
+cmake-build-debug/
+cmake-build-debug
+.idea
+bin
+build*/
+doc/documentation
+doc/HTMLdocs
+doc/whitepages
+
+# root Makefile is generated by CMake automatically
+Makefile
+
+resources/Dependencies/lua-5.3.5/
+resources/Dependencies/ncurses/
+resources/Dependencies/readline/
+resources/Dependencies/triangle/
+resources/Dependencies/glew-2.1.0/
+
+# Latex compile files
+*.aux
+*.lof
+*.log
+*.lot
+*.synctex.gz
+*.toc
+*.pdf
+
+# All vtk mesh files
+/*.vtu
+/*.pvtu
+test/**/*.pvtu
+test/**/*.vtu
+test/modules/linear_boltzmann_solvers/dsa/SimTest_92b_DSA_PWLC.pvtu
+test/modules/linear_boltzmann_solvers/dsa/SimTest_92b_DSA_PWLC_0.vtu
+test/**/*.csv
+
+tests/BigTests/*/solutions/
+
+# All exodus files
+/*.e
+
+resources/Dependencies/.DS_Store
+
+resources/.DS_Store
+
+# python files
+.DS_Store
+._.DS_Store
+*.pyc
+*.pmesh
+__pycache__
+**/__pycache__
+
+*-private.sh
+
+#Documentation
+doc/generated_files
+
+#visual studio code files
+.vscode/
+
+test/**/out/
+tutorials/**/out/
+
+#Scratch directory
+scratch/
+
+#general data files
+*.data
+tests/BigTests/c5g7/Test1/solutions/
+**/*.cmesh
+
+# Python generated libraries
+pyopensn/libopensn*.so*
+pyopensn/libopensn*.dylib
+pyopensn/__init__.cpython*
+pyopensn.egg-info
+
+# Files generated by ply package
+doc/scripts/parser.out
+doc/scripts/parsetab.py
+
+doc/**/*.pvtu
+doc/**/*.vtu
+
+tutorials/**/*.pvtu
+tutorials/**/*.vtu
+tutorials/**/*.py
+
+examples/*/basis/*
+examples/*/data/*
+examples/*/output/*
+examples/*/results/*

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.14)
+project(OpenSnApp LANGUAGES C CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+find_package(MPI REQUIRED)
+find_package(VTK REQUIRED COMPONENTS
+    CommonCore
+    CommonDataModel
+    IOLegacy
+    IOCore
+    IOXML
+    ParallelCore
+    IOParallelXML
+    FiltersCore
+    IOEnSight
+    IOExodus
+)
+
+include(CMakeFindDependencyMacro)
+
+find_package(OpenSn REQUIRED)
+
+message(STATUS "Found OpenSn ${OpenSn_VERSION} (from: ${OpenSn_DIR})")
+
+find_package(pybind11 REQUIRED)
+
+find_package(caliper REQUIRED)
+
+find_package(Python REQUIRED COMPONENTS Interpreter Development)
+
+find_library(LIBROM_LIBRARY
+  NAMES ROM
+  HINTS
+    ENV LIBROM_DIR
+    ${LIBROM_DIR}
+    ${LIBROM_DIR}/install
+  PATH_SUFFIXES lib
+  REQUIRED)
+
+find_path(LIBROM_INCLUDE_DIR
+  NAMES librom.h
+  HINTS
+    ENV LIBROM_DIR
+    ${LIBROM_DIR}
+    ${LIBROM_DIR}/install
+  PATH_SUFFIXES include
+  REQUIRED)
+
+message(STATUS "libROM include dir: ${LIBROM_INCLUDE_DIR}")
+message(STATUS "libROM library: ${LIBROM_LIBRARY}")
+
+file(GLOB_RECURSE ROM_SRCS CONFIGURE_DEPENDS ${PROJECT_SOURCE_DIR}/src/rom/*.cc)
+
+# Python module
+add_library(romapp MODULE
+    src/main.cc
+    src/rom_py_app.cc
+    src/rom.cc
+    ${ROM_SRCS}
+)
+
+execute_process(
+    COMMAND python3 -m pybind11 --includes
+    OUTPUT_VARIABLE PYBIND11_INCLUDE_FLAGS
+    OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+string(REPLACE "-I" "" PYBIND11_INCLUDE_DIRS "${PYBIND11_INCLUDE_FLAGS}")
+separate_arguments(PYBIND11_INCLUDE_DIRS)
+
+target_include_directories(romapp 
+    PRIVATE 
+    ${PROJECT_SOURCE_DIR}/rom
+    ${PYBIND11_INCLUDE_DIRS}
+    ${OpenSn_INSTALL_PREFIX}/include/opensn
+    ${LIBROM_INCLUDE_DIR}
+)
+target_link_libraries(romapp 
+    PRIVATE 
+    opensn::opensn
+    opensn::libopensnpy
+    MPI::MPI_CXX 
+    caliper 
+    pybind11::module 
+    Python::Python 
+    ${LIBROM_LIBRARY})
+
+set_target_properties(romapp PROPERTIES
+    PREFIX ""
+    OUTPUT_NAME "romapp"
+    LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/python
+)
+
+add_executable(rom_app_exec src/main.cc src/rom_py_app.cc src/rom.cc ${ROM_SRCS})
+target_include_directories(rom_app_exec PRIVATE
+    ${PROJECT_SOURCE_DIR}/rom
+    ${PYBIND11_INCLUDE_DIRS}
+    ${OpenSn_INSTALL_PREFIX}/include/opensn
+    ${LIBROM_INCLUDE_DIR}
+)
+target_link_libraries(rom_app_exec 
+    PRIVATE 
+    opensn::opensn
+    opensn::libopensnpy
+    MPI::MPI_C 
+    caliper 
+    pybind11::module 
+    Python::Python 
+    ${LIBROM_LIBRARY})

examples/2gcheckerboard/absorber_base.txt

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+NUM_GROUPS 2
+NUM_MOMENTS 1
+
+SIGMA_T_BEGIN
+0 1.0
+1 1.0
+SIGMA_T_END
+
+TRANSFER_MOMENTS_BEGIN
+M_GPRIME_G_VAL 0 0 0 0.05
+M_GPRIME_G_VAL 0 1 0 0.45
+M_GPRIME_G_VAL 0 0 1 0.45
+M_GPRIME_G_VAL 0 1 1 0.05
+TRANSFER_MOMENTS_END