====== Miniforge - Conda and Mamba ====== The **Miniforge** tool provides access to versions of the ''conda'' and ''mamba'' utilities. These come pre-configured to use the open-source [[https://conda-forge.org/|conda-forge]] community software channels. We reccomend the use of **Miniforge** in all cases where you need to create a conda or mamba environment. * For more information: https://github.com/conda-forge/miniforge ===== Running Miniforge on Comet ===== Simply load the ''Miniforge'' module, and this will set up the ''conda'' and ''mamba'' tools for you: $ module load Miniforge $ which conda conda () { \local cmd="${1-__missing__}"; case "$cmd" in activate | deactivate) __conda_activate "$@" ;; install | update | upgrade | remove | uninstall) __conda_exe "$@" || \return; __conda_reactivate ;; *) __conda_exe "$@" ;; esac } $ module load Miniforge $ which mamba mamba () { \local cmd="${1-__missing__}"; case "$cmd" in activate | deactivate) __conda_activate "$@" ;; install | update | upgrade | remove | uninstall) __mamba_exe "$@" || \return; __conda_reactivate ;; *) __mamba_exe "$@" ;; esac } ==== Environment Location ==== By default, both **conda** and **mamba** will create new environments under ''/mnt/nfs/home/$USER/miniforge3''. Do **not** delete this directory or you will need to recreate your environments. ---- ==== conda ==== Create a new conda environment on Comet: $ module load Miniforge $ conda create -n mycondaenv -c conda-forge Retrieving notices: done Channels: - conda-forge Platform: linux-64 Collecting package metadata (repodata.json): done Solving environment: done ## Package Plan ## environment location: /mnt/nfs/home/n1234/miniforge3/envs/mycondaenv Proceed ([y]/n)? y Downloading and Extracting Packages: Preparing transaction: done Verifying transaction: done Executing transaction: done # # To activate this environment, use # # $ conda activate mycondaenv # # To deactivate an active environment, use # # $ conda deactivate $ Install software into the environment: $ module load Miniforge $ conda activate mycondaenv (mycondaenv) $ (mycondaenv) $ conda install python=3.9.23 Channels: - conda-forge Platform: linux-64 Collecting package metadata (repodata.json): done Solving environment: done ## Package Plan ## environment location: /mnt/nfs/home/n1234/miniforge3/envs/mycondaenv added / updated specs: - python=3.9.23 The following packages will be downloaded: package | build ---------------------------|----------------- libnsl-2.0.1 | hb9d3cd8_1 33 KB conda-forge pip-25.2 | pyh8b19718_0 1.1 MB conda-forge python-3.9.23 |hc30ae73_0_cpython 22.6 MB conda-forge setuptools-80.9.0 | pyhff2d567_0 731 KB conda-forge wheel-0.45.1 | pyhd8ed1ab_1 61 KB conda-forge ------------------------------------------------------------ Total: 24.5 MB The following NEW packages will be INSTALLED: _openmp_mutex conda-forge/linux-64::_openmp_mutex-4.5-20_gnu bzip2 conda-forge/linux-64::bzip2-1.0.8-hda65f42_9 ca-certificates conda-forge/noarch::ca-certificates-2026.1.4-hbd8a1cb_0 icu conda-forge/linux-64::icu-78.2-h33c6efd_0 ld_impl_linux-64 conda-forge/linux-64::ld_impl_linux-64-2.45.1-default_hbd61a6d_101 libexpat conda-forge/linux-64::libexpat-2.7.4-hecca717_0 libffi conda-forge/linux-64::libffi-3.5.2-h3435931_0 libgcc conda-forge/linux-64::libgcc-15.2.0-he0feb66_18 libgcc-ng conda-forge/linux-64::libgcc-ng-15.2.0-h69a702a_18 libgomp conda-forge/linux-64::libgomp-15.2.0-he0feb66_18 liblzma conda-forge/linux-64::liblzma-5.8.2-hb03c661_0 libnsl conda-forge/linux-64::libnsl-2.0.1-hb9d3cd8_1 libsqlite conda-forge/linux-64::libsqlite-3.51.2-hf4e2dac_0 libstdcxx conda-forge/linux-64::libstdcxx-15.2.0-h934c35e_18 libuuid conda-forge/linux-64::libuuid-2.41.3-h5347b49_0 libxcrypt conda-forge/linux-64::libxcrypt-4.4.36-hd590300_1 libzlib conda-forge/linux-64::libzlib-1.3.1-hb9d3cd8_2 ncurses conda-forge/linux-64::ncurses-6.5-h2d0b736_3 openssl conda-forge/linux-64::openssl-3.6.1-h35e630c_1 pip conda-forge/noarch::pip-25.2-pyh8b19718_0 python conda-forge/linux-64::python-3.9.23-hc30ae73_0_cpython readline conda-forge/linux-64::readline-8.3-h853b02a_0 setuptools conda-forge/noarch::setuptools-80.9.0-pyhff2d567_0 tk conda-forge/linux-64::tk-8.6.13-noxft_h366c992_103 tzdata conda-forge/noarch::tzdata-2025c-hc9c84f9_1 wheel conda-forge/noarch::wheel-0.45.1-pyhd8ed1ab_1 zstd conda-forge/linux-64::zstd-1.5.7-hb78ec9c_6 Proceed ([y]/n)? Downloading and Extracting Packages: Preparing transaction: done Verifying transaction: done Executing transaction: done (mycondaenv) $ Run software in the environment: $ module load Miniforge $ conda activate mycondaenv (mycondaenv) $ conda run python -V Python 3.9.23 (mycondaenv) $ * For more information: https://docs.conda.io/projects/conda/en/latest/user-guide/getting-started.html ---- ==== mamba ==== Create a new **mamba** environment on Comet: $ module load Miniforge $ mamba create -n my_mamba_env -c conda-forge Empty environment created at prefix: /mnt/nfs/home/n1234/miniforge3/envs/my_mamba_env $ Install software into your new **mamba** environment: $ module load Miniforge $ mamba activate my_mamba_env (my_mamba_env) $ (my_mamba_env) $ mamba install python=3.14.3 conda-forge/linux-64 Using cache conda-forge/noarch Using cache Transaction Prefix: /mnt/nfs/home/n1234/miniforge3/envs/my_mamba_env Updating specs: - python=3.14.3 Package Version Build Channel Size ────────────────────────────────────────────────────────────────────────────── Install: ────────────────────────────────────────────────────────────────────────────── + _openmp_mutex 4.5 20_gnu conda-forge Cached + bzip2 1.0.8 hda65f42_9 conda-forge Cached + ca-certificates 2026.1.4 hbd8a1cb_0 conda-forge Cached + icu 78.2 h33c6efd_0 conda-forge Cached + ld_impl_linux-64 2.45.1 default_hbd61a6d_101 conda-forge 726kB + libexpat 2.7.4 hecca717_0 conda-forge Cached + libffi 3.5.2 h3435931_0 conda-forge Cached + libgcc 15.2.0 he0feb66_18 conda-forge Cached + libgomp 15.2.0 he0feb66_18 conda-forge Cached + liblzma 5.8.2 hb03c661_0 conda-forge Cached + libmpdec 4.0.0 hb03c661_1 conda-forge Cached + libsqlite 3.51.2 hf4e2dac_0 conda-forge Cached + libstdcxx 15.2.0 h934c35e_18 conda-forge Cached + libuuid 2.41.3 h5347b49_0 conda-forge Cached + libzlib 1.3.1 hb9d3cd8_2 conda-forge Cached + ncurses 6.5 h2d0b736_3 conda-forge Cached + openssl 3.6.1 h35e630c_1 conda-forge Cached + pip 26.0.1 pyh145f28c_0 conda-forge 1MB + python 3.14.3 h32b2ec7_101_cp314 conda-forge 37MB + python_abi 3.14 8_cp314 conda-forge Cached + readline 8.3 h853b02a_0 conda-forge Cached + tk 8.6.13 noxft_h366c992_103 conda-forge Cached + tzdata 2025c hc9c84f9_1 conda-forge Cached + zstd 1.5.7 hb78ec9c_6 conda-forge Cached Summary: Install: 24 packages Total download: 39MB ────────────────────────────────────────────────────────────────────────────── Confirm changes: [Y/n] .. ... ... Transaction finished (my_mamba_env) $ Run software in the **mamba** environment: $ module load Miniforge $ mamba activate my_mamba_env (my_mamba_env) $ mamba run python -V Python 3.14.3 (my_mamba_env) $ * For more information: https://mamba.readthedocs.io/en/latest/user_guide/mamba.html ---- [[:advanced:software|Back to Software]]