自宅LANを10Gb/sにアップグレードした際、10GBASE-T SFP+モジュールが過熱し、約95℃で自動シャットダウンを繰り返す「フラッピング」が発生。Marvellチップ搭載のMikroTik S+RJ10から、Broadcom BCM84891搭載の10Gtek ASF-10G-T80-INTに交換したところ、スイッチのCPU温度が約5℃低下し、リンクの安定性も改善された。ただし新しいモジュールはIntel製光ファイバーモジュールとして認識され、温度監視はできなくなった。
The article details the discovery and diagnosis of a hardware bug in Intel 13th and 14th generation CPUs, specifically affecting the Oodle compression library. The bug was triggered under specific conditions, requiring workarounds to ensure system stability and correct operation of software relying on CPU instructions.
The article explains that data centers can connect to the electric grid faster if they agree to flexible power arrangements, such as reducing consumption during peak demand. This approach helps utilities manage grid strain while speeding up data center construction timelines.
Cohere released North Mini, a compact language model designed for developers to build and deploy AI applications efficiently. The model balances performance with accessibility, offering a smaller footprint for integration into various coding projects and environments.
Google Cloud launched Brazos, a liquid cooling system for air-cooled data centers that supports higher-power AI accelerators without major facility upgrades. It uses liquid-cooled rear-door heat exchangers and warm-water cooling to improve efficiency and sustainability. Brazos is being deployed for Trillium TPUs and Nvidia Blackwell GPUs.
This article explores using JTAG for hardware debugging and firmware extraction from SSDs. It covers identifying JTAG pinouts on a SSD controller, connecting a debugger, and using OpenOCD to interface with the device to dump firmware for reverse engineering analysis.