AutoPas Functor Bench

Minimalistic program to analyze the functor kernel performance of AutoPas on different architectures.

Requirements

• CMake
• git (for CMake FetchContent)
• C++17 compiler

Compile Instructions

These are the compile instructions used on FUGAKU. Details might be subject to change according to your system.

GCC

$ cmake                                                                                           \
    -DCMAKE_BUILD_TYPE=Release                                                                  \
    -DCMAKE_C_COMPILER=gcc                                                                      \
    -DCMAKE_CXX_COMPILER=g++                                                                    \
    -DCMAKE_C_FLAGS=-march=native                                                               \
    -DCMAKE_CXX_FLAGS=-march=native                                                             \
    -DAUTOPAS_FORMATTING_TARGETS=OFF                                                            \
    -DAUTOPAS_VECTOR_INSTRUCTIONS=NATIVE                                                        \
    ..

$ CC=gcc CXX=g++ make AutoPasFunctorBench -j12

FCC

$ cmake                                                                                           \
    -DCMAKE_BUILD_TYPE=Release                                                                  \
    -DCMAKE_C_COMPILER=fcc                                                                      \
    -DCMAKE_CXX_COMPILER=FCC                                                                    \
    -DCMAKE_C_FLAGS="-Nclang -mcpu=a64fx -std=c17 -stdlib=libc++ -msve-vector-bits=512"         \
    -DCMAKE_CXX_FLAGS="-Nclang -mcpu=a64fx -std=c++17 -stdlib=libstdc++ -msve-vector-bits=512"  \
    -DAUTOPAS_FORMATTING_TARGETS=OFF                                                            \
    -DAUTOPAS_VECTOR_INSTRUCTIONS=DEFAULT                                                       \
    ..

$ CC='fcc -Nclang -mcpu=a64fx -std=c17 -stdlib=libc++'              \
  CXX='FCC -Nclang -mcpu=a64fx -std=c++17 -stdlib=libc++'           \
    make AutoPasFunctorBench -j12

Profiling

The code contains optional measurement regions for Fujitsu's Advanced Performance Profiler. To enable them set the CMake variable ENABLE_FAPP=ON.

AutoPas Version

To select which version of AutoPas to benchmark change e.g. GIT_TAG in cmake/modules/autopas.cmake.