FDTD Colab Setup

Option 1: Lumi Colab¶

Run FDTD notebooks for free on Lumi Colab! Similar to Google Colab but preloaded with Lumi FDTD, Copilot AI and persistent storage. Has runtime and size restrictions and excludes inverse design. Upgrade to Lumi Colab Enterprise tier for unrestricted usage: info@luminescentai.com

Option 2: Local Python frontend + Lumi Colab backend¶

Run Python notebooks locally. lumi.solve uploads problem files to Lumi Colab server and downloads solution files. Same tiers apply

Prereqs¶

• Python (Anaconda distro recommended for Windows users)

• VS Code or another IDE

• On a Linux VM you may need

sudo apt-get update
sudo apt install -y harminv  libxi6 libxxf86vm1 libxrender1 libgl1 libglx-mesa0 libsm6 libice6 libxext6 libglib2.0-0 libglu1-mesa libxcursor1 libxft2 libxinerama1

Frontend¶

pip install luminescent

Backend¶

Set environmental variables with YOUR_TOKEN from Lumi Colab. A copy of each run is kept in your Lumi Colab home at ~/local/runs/<run folder name>. On Linux:

export LUMI_API=https://api.luminescentai.com
export LUMI_TOKEN=YOUR_TOKEN

On Windows (PowerShell), then restart your terminal or IDE:

setx LUMI_API https://api.luminescentai.com
setx LUMI_TOKEN YOUR_TOKEN

Option 3: fully local¶

Executables can be compiled for enterprise customers above major spend threshold.