diff --git a/doc/src/Build_basics.rst b/doc/src/Build_basics.rst index 63b1db7349..2a940c7ea7 100644 --- a/doc/src/Build_basics.rst +++ b/doc/src/Build_basics.rst @@ -21,12 +21,14 @@ Serial vs parallel build LAMMPS is written to use the ubiquitous `MPI (Message Passing Interface) `_ library API -for distributed memory parallel computation. It is compatible with the -MPI standard version 2.x and later. LAMMPS can also be build into a +for distributed memory parallel computation. You need to have such a +library installed for building and running LAMMPS in parallel using a +domain decomposition parallelization. It is compatible with the MPI +standard version 2.x and later. LAMMPS can also be built into a "serial" executable for use with a single processor using the bundled MPI STUBS library. -Independent of the distributed memory MPI parallelization parts of +Independent of the distributed memory MPI parallelization, parts of LAMMPS are also written with support for shared memory parallelization using the OpenMP threading standard. A more detailed discussion of that is below.