Mii: Difference between revisions

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A smart search engine for module environments.
A smart search engine for module environments.


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|mii enable
|mii enable
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Revision as of 12:58, 30 September 2021


This article is a draft

This is not a complete article: This is a draft, a work in progress that is intended to be published into an article, which may or may not be ready for inclusion in the main wiki. It should not necessarily be considered factual or authoritative.



Other languages:

A smart search engine for module environments.

Mii works around an existing modules installation, efficiently searching and loading modules on-demand for users.

Once Mii is loaded, modules will be quietly autoloaded for any unambiguous commands. Ambiguous commands will interactively ask for modules to load.

It features:

  • Support for Lmod and Environment Modules installations
  • bash and zsh shell integration
  • Module listing / individual information (via mii list, mii show)
  • Searching for exact commands
  • Searching for similar commands
  • Optional JSON export format


Important note

A module that is autoloaded does not persist after the command. The shell environment will be the same as it was before mii autoloaded a module.


Activating Mii

To enable/load mii:

Question.png
[name@server ~]$ module load mii

Once Mii is loaded, it will start making suggestion. When a command is not found, for example:

Question.png
[name@server ~]$ cmd
[mii] cmd not found! Similar commands: "cmp", "cmp", "dcmd"

Unambiguous commands

When a command or binary is known and unambiguous, it will be autoloaded:

Question.png
[name@server ~]$ python3.9 --version
[mii] loading StdEnv/2020 python/3.9.6 ...
Python 3.9.6

Ambiguous commands

When a command or binary is unknown or ambiguous, it will suggest a selection of potential candidates based on their relevance:

Question.png
[name@server ~]$ blastn -version
[mii] Please select a module to run blastn:
       MODULE         PARENT(S)
    1  blast+/2.12.0  StdEnv/2020 gcc/9.3.0
    2  blast+/2.11.0  StdEnv/2020 gcc/9.3.0
    3  blast+/2.10.1  StdEnv/2020 gcc/9.3.0
    4  rmblast/2.10.0 StdEnv/2020 gcc/9.3.0
    5  blast+/2.10.1  nixpkgs/16.09 gcc/7.3.0
    6  blast+/2.10.0  nixpkgs/16.09 gcc/7.3.0
    7  blast+/2.9.0   nixpkgs/16.09 gcc/7.3.0
    8  blast+/2.8.1   nixpkgs/16.09 gcc/7.3.0
    9  blast+/2.7.1   nixpkgs/16.09 gcc/7.3.0
    10 blast+/2.4.0   nixpkgs/16.09 gcc/7.3.0
    11 igblast/1.9.0  nixpkgs/16.09 gcc/7.3.0
    12 rmblast/2.9.0  nixpkgs/16.09 gcc/7.3.0
    13 blast+/2.6.0   nixpkgs/16.09 gcc/5.4.0
    14 igblast/1.9.0  nixpkgs/16.09 gcc/5.4.0
    15 igblast/1.8.0  nixpkgs/16.09 gcc/5.4.0
    16 igblast/1.7.0  nixpkgs/16.09 gcc/5.4.0
    17 rmblast/2.6.0  nixpkgs/16.09 gcc/5.4.0
    18 igblast/1.8.0  nixpkgs/16.09 gcc/4.8.5
Make a selection (1-18, q aborts) [1]: 1
[mii] loading StdEnv/2020 gcc/9.3.0 blast+/2.12.0 ...

Lmod is automatically replacing "intel/2020.1.217" with "gcc/9.3.0".


Due to MODULEPATH changes, the following have been reloaded:
  1) openmpi/4.0.3

blastn: 2.12.0+
 Package: blast 2.12.0, build Sep 27 2021 15:23:34

As shown above, we selected one module (#1) out of the selection, and the command was then ran.

Search with Mii

You can search for binaries to discover which modules provides it. The results are sorted by relevance:

Question.png
[name@server ~]$ mii search pgc+
Results for "pgc+": (total 16)
    MODULE            COMMAND      PARENT(S)        RELEVANCE
    nvhpc/20.7        pgcc         StdEnv/2020      high
    nvhpc/20.7        pgc++        StdEnv/2020      high
    pgi/19.4          pgcc         nixpkgs/16.09    high
    pgi/19.4          pgc++        nixpkgs/16.09    high
    pgi/17.3          pgc          nixpkgs/16.09    high
    pgi/17.3          pgcc         nixpkgs/16.09    high
    pgi/17.3          pgc++        nixpkgs/16.09    high
    pgi/16.9          pgc          nixpkgs/16.09    high
    pgi/16.9          pgcc         nixpkgs/16.09    high
    pgi/16.9          pgc++        nixpkgs/16.09    high
    pgi/13.10         pgc          nixpkgs/16.09    high
    pgi/13.10         pgcc         nixpkgs/16.09    high
    pgi/13.10         pgc++        nixpkgs/16.09    high
    pgi/13.10         pgCC         nixpkgs/16.09    high
    gcccore/.9.3.0    gcc          StdEnv/2020      medium
    gcccore/.9.3.0    g++          StdEnv/2020      medium

Disabling Mii

To disable mii:

Question.png
[name@server ~]$ mii disable

Re-enabling

To re-enable mii:

Question.png
[name@server ~]$ mii enable