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What Have We Seen
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Although on the login nodes we do have a We can see that R is not available, nor most of the applications that researchers will require. There are:
We can not provide a system that provides everything all at once. |
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What we need is a method to enable users to find and select that they specifically need, and a method to allow them to configure and setup their sessions/environment to allow them to perform their analysis and research. |
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LMOD: An Environment Module System
ARCC: Lmod – Software
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What do we have available?
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Check the MedicineBow Software Page. |
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LMOD: An Environment Module System
ARCC: Lmod – Software
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What’s available?
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# Go back to your home folder. [...]$ cd ~ [~]$ cd intro_to_modules/ |
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What is Available?
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What’s available: Using the Module System
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Use |
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# Modules currently loaded. []$ mlmodule list Currently Loaded Modules: 1) slurm/latest (S) 2) arcc/1.0 (S) |
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Use |
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# What's available within my 'current' environment. # With respect to what modules I 'currently' have loaded. []$ module avail ... |
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Info |
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Modules have a name and a version: |
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The two modules These make available various commands and scripts that ALL users require (such as Slurm commands). If you |
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What’s available? Compiler tree
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Some software has to be built with respect to a compiler. By default we build using the GNU family of compilers for C/C++ and Fortran. |
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Some commands have shortcuts. Using |
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[]$ module purge
[]$ module load gcc/13.2.0
[]$ ml
Currently Loaded Modules:
1) slurm/latest (S) 3) gmp/6.2.1 5) mpc/1.3.1 7) zstd/1.5.5
2) arcc/1.0 (S) 4) mpfr/4.2.0 6) zlib-ng/2.1.4 8) gcc/13.2.0 |
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[] module avail
# What has |
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Question What changed? |
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We can now wee see all the modules available that have been compiled with |
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These are only available if/when after the |
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Change Compiler
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Let’s see what happens to our environment if we load a different compiler. |
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[]# module load nvhpc-sdk/24.3
Lmod is automatically replacing "gcc/13.2.0" with "nvhpc-sdk/24.3". |
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Again, what happened? |
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[]$ ml
Currently Loaded Modules:
1) slurm/latest (S) 2) arcc/1.0 (S) 3) nvhpc-sdk/24.3
[]$ module avail |
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Info |
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Only modules relating to |
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are |
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now |
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available. |
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You can only have one module compiler loaded at a time. Compilers of the same name, but different versions ( |
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Purge Your Modules
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Use the |
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The more modules you have loaded, the more dependencies you will have loaded and the more likely you are to forget what you have loaded… |
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[]$ module purge
The following modules were not unloaded:
(Use "module --force purge" to unload all):
1) slurm/latest 2) arcc/1.0
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Again, what has changed? |
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[]$ ml Currently[]$ Loaded Modules: 1) slurm/latest (S) 2) module avail |
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We are back to having the two modules loaded ( S) Where: S: Module is Sticky, requires --force to unload or purgeby default) and the initial set of available modules. |
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The more modules you have loaded, the more dependencies you will have loaded and the more likely you are to forget what you have loaded… |
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As mentioned earlier, do not use the |
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Looking for Modules: module spider
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[]$ module spider openmpi ---------------------------------------------------------------------------- openmpi: openmpi/4.1.6 ---------------------------------------------------------------------------- Other possible modules matches: nvhpc-openmpi3 You will need to load all module(s) on any one of the lines below before the "openmpi/4.1.6" module is available to load. arcc/1.0 gcc/13.2.0 ... |
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Module load/spider: Dependencies
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If you |
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[]$ module spider openmpi/4.1.6
----------------------------------------------------------------------------
openmpi: openmpi/4.1.6
----------------------------------------------------------------------------
You will need to load all module(s) on any one of the lines below before the "openmpi/4.1.6" module is available to load.
arcc/1.0 gcc/13.2.0
Help:
An open source Message Passing Interface implementation. ... |
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Try loading before loading |
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[]$ module load openmpi/4.1.6
Lmod has detected the following error: These module(s) or extension(s) exist
but cannot be loaded as requested: "openmpi/4.1.6"
Try: "module spider openmpi/4.1.6" to see how to load the module(s).
# What dependencies does openmpi have? And what is currently loaded?
[]$ module load |
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Load the required dependencies, then re-try: |
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[]$ module load gcc/13.2.0
[]$ module load openmpi/4.1.6
[]$ |
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Let’s check everything has been loaded successfully: |
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[]$ which mpicc /apps/u/opt/gcc/13.2.0/openmpi/4.1.6/bin/mpicc []$ module load mpicc --version gcc (Spack GCC) 13.2.0 Copyright (C) 2023 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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What Do You Notice?
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After loading what do we notice about what is now loaded and available? |
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[]$ ml []$ module avail |
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Notice we have opened up an additional set of modules: |
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---- /apps/s/lmod/mf/spack/linux-rhel9-x86_64/openmpi/4.1.6-ipshyxb/gcc/13.2.0 ----
adios2/2.9.2-ompi netcdf-cxx4/4.3.1-ompi
cgns/4.4.0-ompi netlib-scalapack/2.2.0-ompi
elpa/2023.05.001-ompi parallel-netcdf/1.12.3-ompi
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Due to dependencies, there can be a hierarchy of core modules that need to be loaded to make other libraries and software available. and what is loaded. For example, some libraries, such as Typically their version number will be prefixed with Try: |
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What’s different between these command-lines?
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What do we notice about the required dependencies for the following versions of Python? |
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[]$ module spider python/3.10.6 []$ module spider python/3.12.0 []$ module spider python2 |
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What’s different between these command-lines? Dependencies
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The two |
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[]$ module spider python/3.10.6 []$ module spider python/3.12.0 ... You will need to load all module(s) on any one of the lines below before the "python/3.12.0" module is available to load. arcc/1.0 gcc/13.2.0 arcc/1.0 gcc/14.2.0 ... |
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The |
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[]$ module spider python2 ---------------------------------------------------------------------------- python2: python2/2.7.18 ---------------------------------------------------------------------------- You will need to load all module(s) on any one of the lines below before the "python2/2.7.18" module is available to load. arcc/1.0 |
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More module commands
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The |
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[]$ module
Modules based on Lua: Version 8.7 2022-04-16 13:49 -05:00
by Robert McLay mclay@tacc.utexas.edu
module [options] sub-command [args ...]
Help sub-commands:
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help prints this message
help module [...] print help message from module(s)
Loading/Unloading sub-commands:
-------------------------------
load | add module [...] load module(s)
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