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

```bash $ cmake \ -DCMAKEBUILDTYPE=Release \ -DCMAKECCOMPILER=gcc \ -DCMAKECXXCOMPILER=g++ \ -DCMAKECFLAGS=-march=native \ -DCMAKECXXFLAGS=-march=native \ -DAUTOPASFORMATTINGTARGETS=OFF \ -DAUTOPASVECTORINSTRUCTIONS=NATIVE \ ..

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

FCC

```bash $ cmake \ -DCMAKEBUILDTYPE=Release \ -DCMAKECCOMPILER=fcc \ -DCMAKECXXCOMPILER=FCC \ -DCMAKECFLAGS="-Nclang -mcpu=a64fx -std=c17 -stdlib=libc++ -msve-vector-bits=512" \ -DCMAKECXXFLAGS="-Nclang -mcpu=a64fx -std=c++17 -stdlib=libstdc++ -msve-vector-bits=512" \ -DAUTOPASFORMATTINGTARGETS=OFF \ -DAUTOPASVECTORINSTRUCTIONS=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.