I have been a while in Fedora and other Linuxes, and I got used to loading "environment modules".
For example, in Fedora, I could install both mpich and openmpi (two implementations of the same library, MPI), and I can switch between the two by doing load module mpich or load module openmpi.
In Ubuntu, instead, the two libraries coexist, for example, with different executables, mpirun.mpich or mpirun.openmpi.
Both approaches have their pros and cons, but can I configure Ubuntu to do modules instead?
Moreover, I just installed NVHPC (Nvidia compiler, etc.), and after manual installation (from a tar file), I saw the message:
...
generating environment modules for NV HPC SDK 23.7 ... done.
Installation complete.
HPC SDK successfully installed into /opt/nvidia/hpc_sdk
If you use the Environment Modules package, that is, the module load
command, the NVIDIA HPC SDK includes a script to set up the
appropriate module files.
% module load /opt/nvidia/hpc_sdk/modulefiles/nvhpc/23.7
% module load nvhpc/23.7
Alternatively, the shell environment may be initialized to use the HPC SDK. ...
In this case, it would be very handy to be able to use modules instead of setting a lot of environment variables or polluting .bashrc.
How can I configure Ubuntu to use these modules that were apparently just generated by the installation script?
Of course, the command module doesn't work at the moment.
$ module load nvhpc/23.7
module: command not found
environment-modulespackage? It's in theuniverserepository - see How do I enable the "Universe" repository? if you're unsure. – steeldriver Oct 29 '23 at 11:49family("mpi")to the different modules means that only one can be loaded. – Victor Eijkhout Oct 29 '23 at 12:54$ sudo apt install environment-modules) I get an error with$ module load nvhpc/23.7->module: command not found– alfC Oct 29 '23 at 16:48Lmodin Ubuntu? – alfC Oct 29 '23 at 16:49. /etc/profileto start using themodulecommand. – alfC Oct 30 '23 at 02:46