Selector-mpi (flory)

The script selector-mpi, located in the /home/bgo/shared/bin directory, makes it easy to setup the environment for supported MPI implementations and packages.

Command line parameters

¹Long form options are prefixed with --; ²Short form options are prefixed with -.

Long form1	Short form2	Option type	Required?	Description
implementation	i	string	No	Set MPI implementation
	o		No	Shortcut for -i gnu-openmpi
show	s		No	Shows available MPI implementations or package versions for implementation. To see package versions, -i or -o must specified first, otherwise MPI implementations will be shown.
fullclean	f		No	Full (almost) clean of path. Cleans out extraneous path entries that the typical user does not need (e.g., sbin directories).
clean	c		No	Cleans all paths by removing entries that this script adds, also does a -f for a full cleanup. NOTE: If this is specified, the script will clean the path and ignore all other options, except for verbose and quiet.
verbose	v		No	Be verbose
quiet	q		No	Be quiet.
help	h		No	Show the help text.

package versions List of package versions to use. The default version will be used for any unspecified package. See examples below.

Examples

Example 1

To get a list of available MPI implementations:

user $source selector-mpi -s

Example 2

To get a list of package versions available for the gnu-openmpi MPI implementation:

user $source selector-mpi -i gnu-openmpi -s

Example 3

To use lammps version 20170101, qe version 5.0.2, and the default version for all other available packages for the gnu-openmpi MPI implementation:

user $source selector-mpi -i gnu-openmpi lammps/20170101 qe/5.0.2

Example 4

To use Open MPI compiled with the GNU compiler and the default version of all packages, add the following line to the bottom of the $HOME/.bashrc file:

source selector-mpi -i gnu-openmpi -f -q

It is recommended to put (4) into all queue submission scripts to be sure which MPI implementation and package version is used.