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picoLLM Inference Engine C Demo

Compatibility

  • C99-compatible compiler
  • Runs on Linux (x86_64), macOS (arm64, x86_64), Windows (x86_64), and Raspberry Pi (5 and 4).

Requirements

  • CMake version 3.13 or higher
  • MinGW (Windows Only)

AccessKey

AccessKey is your authentication and authorization token for deploying Picovoice SDKs, including picoLLM. Anyone who is using Picovoice needs to have a valid AccessKey. You must keep your AccessKey secret. You would need internet connectivity to validate your AccessKey with Picovoice license servers even though the LLM inference is running 100% offline and completely free for open-weight models. Everyone who signs up for Picovoice Console receives a unique AccessKey.

Models

picoLLM Inference Engine supports the following open-weight models. The models are on Picovoice Console.

  • Gemma
    • gemma-2b
    • gemma-2b-it
    • gemma-7b
    • gemma-7b-it
  • Llama-2
    • llama-2-7b
    • llama-2-7b-chat
    • llama-2-13b
    • llama-2-13b-chat
    • llama-2-70b
    • llama-2-70b-chat
  • Llama-3
    • llama-3-8b
    • llama-3-8b-instruct
    • llama-3-70b
    • llama-3-70b-instruct
  • Llama-3.2
    • llama3.2-1b-instruct
    • llama3.2-3b-instruct
  • Mistral
    • mistral-7b-v0.1
    • mistral-7b-instruct-v0.1
    • mistral-7b-instruct-v0.2
  • Mixtral
    • mixtral-8x7b-v0.1
    • mixtral-8x7b-instruct-v0.1
  • Phi-2
    • phi2
  • Phi-3
    • phi3

Usage

The demo accepts a prompt and a set of optional parameters and generates a single completion. It can run all models, whether instruction-tuned or not.

Build Linux/MacOS

Build the demo by running this from the root of the repository:

cmake -S demo/c/ -B demo/c/build
cmake --build demo/c/build

Build Windows

Build the demo by running this from the root of the repository:

cmake -S demo/c/ -B demo/c/build -G "MinGW Makefiles"
cmake --build demo/c/build

Run

Running the demo without arguments prints the usage:

Usage: ./demo/c/build/picollm_demo_completion -a ACCESS_KEY -l LIBRARY_PATH -m MODEL_PATH
[-d DEVICE] [-c COMPLETION_TOKEN_LIMIT] [-s STOP_PHRASES] [-e SEED] [-r PRESENCE_PENALTY]
[-f FREQUENCY_PENALTY] [-o TOP_P] [-t TEMPERATURE] [-n MAX_OUTPUT_TOKENS] [-c NUM_TOP_CHOICES]
[-v] [-h] -p PROMPT
-v: enable verbose output
-h: show available devices

For a simle completion demo, run the command corresponding to your platform from the root of the repository. Replace ${ACCESS_KEY} with yours obtained from Picovoice Console, ${MODEL_PATH} with the path to a model file downloaded from Picovoice Console, and ${PROMPT} with a prompt string. -v enables verbose output, and -h shows available devices. For more information on the optional parameters, see the picollm header file.

Linux/macOS

./demo/c/build/picollm_demo_completion \
-a ${ACCESS_KEY} \
-m ${MODEL_PATH} \
-l ${LIBRARY_PATH} \
-p ${PROMPT}

where ${LIBRARY_PATH} is the path to the Picovoice library file corresponding to your platform shown in the table below:

Platform Library Path
Linux (x86_64) lib/linux/x86_64/libpv_picollm.so
macOS (x86_64) lib/mac/x86_64/libpv_picollm.dylib
macOS (arm64) lib/mac/arm64/libpv_picollm.dylib
Raspberry Pi 5 lib/raspberry-pi/cortex-a76/libpv_picollm.so
Raspberry Pi 5 (64-bit) lib/raspberry-pi/cortex-a76-aarch64/libpv_picollm.so
Raspberry Pi 4 lib/raspberry-pi/cortex-a76/libpv_picollm.so
Raspberry Pi 4 (64-bit) lib/raspberry-pi/cortex-a76-aarch64/libpv_picollm.so

Windows

Run using Command Prompt.

demo\c\build\picollm_demo_completion.exe ^
-a ${ACCESS_KEY} ^
-m ${MODEL_PATH} ^
-l lib\windows\amd64\libpv_picollm.dll ^
-p ${PROMPT}