MPI/Examples : exMPI01

Description

A simple application

Configuration:

Geometry : chamber / calorimeter
Primary : particle gun (200 MeV electron as default)
Physics List : FTFP_BERT

Features:

Particles are transported in a geometry without any scoring.
Learn how to parallelized your G4 session.

How to build

Use CMake on Geant4 library installed with CMake build.

This example requires G4mpi library to be installed (see examples/extended/parallel/MPI/source/REDME.md)

Follow these commands,

> mkdir build
> cd build
> cmake -DG4mpi_DIR=<where-G4mpi-wasintalled>/lib[64]/G4mpi -DCMAKE_CXX_COMPILER=mpicxx \
  -DGeant4_DIR=<your Geant4 install path>/lib[64]/Geant4-V.m.n <path-to-source>
  (V.m.n is the version of Geant4, eg. Geant4-9.6.0)
> make
> make install

Replace mpicxx with your MPI-compiler wrapper.

How to run

> mpiexec -n # ./exMPI01 [run.mac]