[SOLVED] Mamba stalls on creating environment from yaml on Ubuntu 22 EC2 instance that works perfectly on local machine

Mamba stalls on creating environment from yaml on Ubuntu 22 EC2 instance that works perfectly on local machine

I am trying to spin up a Python web application on an AWS EC2 instance running Ubuntu 22. I am using mamba as a package manager and have the packages written into an environment.yml file. Running mamba env create --file=environment.yml works perfectly for creating a virtual environment (and running the app) on my local machine. However, on my new EC2 instance, the process stops after printing Looking for: ['python=3.11', 'langchain', 'openai', 'tiktoken', 'pandas', 'streamlit', 'pip'] and then waiting about 5 seconds. I don't know if the issue is coming from something related to Ubuntu, EC2, or mamba and I am unsure how to troubleshoot this.

The entirety of commands run on this instance so far:

# download and install mamba 
curl -L -O "https://github.com/conda-forge/miniforge/releases/latest/download/Mambaforge-$(uname)-$(uname -m).sh"
bash Mambaforge-$(uname)-$(uname -m).sh
git clone https://github.com/username/repo
mamba env create --file=environment.yml

The contents of environment.yml

name: environment-name
channels:
  - conda-forge
  - nodefaults
dependencies:
  - python=3.11
  - langchain
  - openai
  - tiktoken
  - pandas
  - streamlit
  - pip

  - pip:
    - streamlit-authenticator

Solution

Very belated answer to my own question, in case anyone else has the same issue: the problem was limited RAM. Simply upsize the instance, build the environment, and then downsize the instance, as needed.