Data Physics & Cyber-Physical Systems – Part VIII: Cyber-Physical Magnetic Telemetry and Cavitation Erosion Diagnostics in mCDU (Direct-to-Chip) Architectures

ABSTRACT High-density AI clusters (>100 kW/rack) utilizing liquid cooling (mCDU/D2C) fall victim to a fundamental engineering flaw: blind faith in the sterility of closed-loop systems. When reactive thermal management (BMS) induces a pressure collapse (NPSH_a drop) and the release of dissolved gases from the coolant, these systems enter a phase of violent cavitation erosion of the pump impellers. The resulting "metallic slurry" bypasses standard mesh filters, causing irreversible colmatation of the microscopic copper channels on the processors (Cold Plates). This paper introduces the concept of Cyber-Physical Magnetic Telemetry. By replacing passive filters with zero-inertia neodymium traps coupled with Hall effect sensors, we create an early warning system against hardware colmatation. Furthermore, this work defines the "Neodymium Test" as an absolute commissioning standard (QA/QC), serving as a hardware "black box" to diagnose pump automation failures in AI cooling systems. Legal & Licensing Notice The concept of Cyber-Physical Magnetic Telemetry, the commissioning procedures (QA/QC), and all associated source codes provided in the QA_QC_mCDU_CDU repository are subject to the following rigorous, strong Copyleft licensing model: 1. Hardware Architecture: All physical designs, schematics, and concepts regarding the integration of neodymium cores with telemetry sensors (e.g., Hall effect sensors) are licensed under the CERN-OHL-S v2 (CERN Open Hardware Licence - Strongly Reciprocal). 2. Software & Scripts: The codebase for predictive telemetry and analytical algorithms is released under the GNU AGPL-3.0 (Affero General Public License). The deployment or execution of this codebase within closed, internal Data Center networks (such as BMS/PLC architectures) mandates the public release of the underlying source code to all interacting users. 3. Documentation & Methodology: The "Neodymium Test" procedure, engineering specifications, and theoretical frameworks are distributed under the CC BY-SA 4.0 (Creative Commons Attribution-ShareAlike 4.0 International) license. Warning & Enforceability: Any application of the described methodology, diagnostic tests, or hardware logic within Closed-Source Commercial Implementations (e.g., proprietary cooling infrastructure or commercial BMS software) without strict adherence to the aforementioned Open-Source and Open-Hardware licenses results in the immediate termination of all implied licensing rights. Such unauthorized use requires separate commercial negotiations with the creator. Furthermore, this publication expands the public Prior Art database, expressly invalidating and blocking any secondary or derivative patenting attempts by third-party corporate entities.