lm-launcher

A small Swing GUI for managing local GGUF models and launching apps with model-dependent command-line placeholders.

What it does

• scans a configured models directory for .gguf files
• stores per-model settings in models.json
• stores app launch definitions in apps.json
• launches apps with placeholders resolved from the selected model

Model settings

Each model can store:

• context length
• max context length
• threads
• GPU layers
• prompt template
• temperature
• top-p
• top-k
• min-p

The main window also provides sliders for quickly adjusting launch-time values for:

• context length
• threads
• GPU layers
• temperature
• top-p
• top-k
• min-p

App placeholders

Use these tokens in app arguments:

• MODEL
• CONTEXT_SIZE
• THREADS
• GPU_LAYERS
• TEMP
• TOP_P
• TOP_K
• MIN_P

Example:

-m MODEL -c CONTEXT_SIZE -t THREADS -ngl GPU_LAYERS --temp TEMP --top-p TOP_P --top-k TOP_K --min-p MIN_P

Setup

lm-launcher.properties

The launcher reads lm-launcher.properties on startup. It requires at least the following keys:

Key	Description	Example
models	Path to the directory containing GGUF model files (scanned on startup)	/mnt/data/data/lm/models/gguf/
console	Command template to launch a terminal; CMD is replaced with the resolved app command	/usr/bin/konsole --noclose -e CMD

Example:

models=/mnt/data/data/lm/models/gguf/
console=/usr/bin/konsole --noclose -e CMD

Default configuration files

The repository ships with default lm-launcher.properties, models.json, and apps.json files. These are meant as reference examples — copy them and adjust the paths and settings to match your environment. Apps and models can be managed in the GUI.

Files

• lm-launcher.properties – launcher configuration
• models.json – saved model settings
• apps.json – saved app definitions
• run.sh – starts the packaged launcher jar

Run

./run.sh

To build from source with the bundled Jackson jars:

javac -cp jackson-annotations-2.17.2.jar:jackson-core-2.17.2.jar:jackson-databind-2.17.2.jar -d /tmp/lm-launcher-build $(find src -name '*.java' | sort)
java -cp /tmp/lm-launcher-build:jackson-annotations-2.17.2.jar:jackson-core-2.17.2.jar:jackson-databind-2.17.2.jar de.extio.lm_launcher.Main