Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. 

Information

Using scilab (RedHat)

To initialize the environment use the module command:

[elx]% module avail
[elx]% module load scilab            # load the current version, gnu-compiled
[elx]% module load scilab/5.5.2      # load a specific version. 
[elx]% module list                   # The scilab module also loads the corresponding openmpi module
Currently Loaded Modulefiles:
  1) scilab/5.5.2         2) mpi/openmpi-x86_64