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Diffstat (limited to 'Docs/source/running_cpp')
| -rw-r--r-- | Docs/source/running_cpp/parameters.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Docs/source/running_cpp/parameters.rst b/Docs/source/running_cpp/parameters.rst index 73f613a73..0d599a261 100644 --- a/Docs/source/running_cpp/parameters.rst +++ b/Docs/source/running_cpp/parameters.rst @@ -44,6 +44,19 @@ Overall simulation parameters * ``warpx.verbose`` (`0` or `1`) Controls how much information is printed to the terminal, when running WarpX. +* ``warpx.random_seed`` (`string` or `int` > 0) optional + If provided ``warpx.random_seed = random``, the random seed will be determined + using `std::random_device` and `std::clock()`, + thus every simulation run produces different random numbers. + If provided ``warpx.random_seed = n``, and it is required that `n > 0`, + the random seed for each MPI rank is `(mpi_rank+1) * n`, + where `mpi_rank` starts from 0. + `n = 1` and ``warpx.random_seed = default`` + produce the default random seed. + Note that when GPU threading is used, + one should not expect to obtain the same random numbers, + even if a fixed ``warpx.random_seed`` is provided. + Setting up the field mesh ------------------------- |