Installation: Machine Configuration File - hyschive/gamer-fork GitHub Wiki

The machine configuration file is located under configs. It specifies the library paths, compiler types, compilation flags, and GPU compute capability.

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Check the configs directory to see if a configuration file is already available for your machine.

Set Up the Machine Configuration File

To set up your machine configuration file, go to configs and make a copy of template.config to modify:

cd configs
cp template.config your_machine.config

Please refer to the following sections to set up your machine configuration file.

0. Rules of the configuration file

  • Comments must start with #.
  • The variable name and its value must be separated by space(s).

1. Library paths

For example, MPI_PATH can be set by:

MPI_PATH /usr/local/mpich-3.2

Please also check out the installation of External Libraries.

2. Compilers

There are two compilers in this section: C++ (CXX) and MPI (CXX_MPI).

Note

MPI_PATH/bin/ will be combined with CXX_MPI automatically

3. Compilation flags

For example, CXXFLAG can be set by:

CXXFLAG -g -O2

or

CXXFLAG -g
CXXFLAG -O2

Here is a table of all the available flag variables:

Flag name Description
CXXFLAG Flags for compiler CXX and CXX_MPI
OPENMPFLAG Flags for OpenMP
LIBFLAG Flags for all libraries
NVCCFLAG_COM Flags for nvcc compiler
NVCCFLAG_FLU Flags for fluid solver files
NVCCFLAG_POT Flags for Poisson/gravity solvers files

4. GPU compute capability

The GPU compute capability can be calculated by major_verison*100 + minor_version*10. For example, for GeForce RTX 4090, set GPU_COMPUTE_CAPABILITY 890 (8*100 + 9*10).

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