3.1. Environment Modules for OpenMPI

As of Rocks 5.5 and 6.0 (Mamba), Environment Modules are utilized to control MPI path names. By default the rocks-openmpi module is loaded and is openmpi compiled with gnu compiler and the ethernet device.

• To see the currently loaded modules:

  % module list Currently Loaded Modulefiles: 1) rocks-openmpi %

• To see available modules:

  % module avail ------------------------ /usr/share/Modules/modulefiles ------------------------ dot module-info null use.own module-cvs modules rocks-openmpi ------------------------ /usr/share/Modules/modulefiles ------------------------ dot module-info null use.own module-cvs modules rocks-openmpi %

• To NOT load the Rocks default module Definition. Set the environment variable ROCKS_MODULE_USER_DEF to a non-zero string.

  export ROCKS_USER_MODULE_DEF=True

  if modules are already loaded, then ROCKS_USER_MODULE_DEF will not unload already loaded modules. If you do not want the Rocks default then set the above definition in your $HOME/.bashrc or $HOME/.cshrc files