Skip to content
MappleCare Community ↗

MappleCare Community

Reply To: [Solved] Local LLM / MLX Framework Unified Memory Allocation Out-of-Memory Panic on macOS Sequoia 15.1: Diagnostic steps and permanent fix

Find answers from other Apple users or start a discussion about your device.

All Forum Rooms

Home › Forums › Apple Silicon, Terminal & Developer Tools › [Solved] Local LLM / MLX Framework Unified Memory Allocation Out-of-Memory Panic on macOS Sequoia 15.1: Diagnostic steps and permanent fix › Reply To: [Solved] Local LLM / MLX Framework Unified Memory Allocation Out-of-Memory Panic on macOS Sequoia 15.1: Diagnostic steps and permanent fix

November 15, 2026 at 12:27 am #15549
Oliver King
Community Contributor
Apple Recommended / Verified Community Solution
This canonical solution was verified and marked as solved in the Apple Support Community archive.

Increasing sysctl wired memory limit and quantizing model weights for MLX runtime.

Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:

  1. Increase sysctl wired unified memory limit: 
    sudo sysctl iogpu.wired_mem_limit=180000
  2. Load models using 4-bit or 8-bit quantization (e.g. mlx-lm.generate --model mlx-community/Llama-3-70B-4bit).
  3. Flush system unified cache before heavy inference passes: 
    sudo purge

Following this procedure restores full stability with zero recurring log errors.

Mac mini M2 (24GB) | Apple Technician Guide Hub | Fluke 87V DMM | San Jose, CA
Apple Certified Support Professional (ACSP) | Apple Certified Service Technician (ACiT / ACSP)