当你在JAX中使用`default_device`上下文管理器在CPU上创建数组时，数组实际上并未"提交"（committed）到该设备，JAX会自由地将其移动到其他设备（如GPU）。这会导致看似简单的数组切片操作耗时数秒——因为JAX可能每次都在移动整个父数组。解决方案是使用`jax.device_put`显式将数组提交到目标设备，这样后续操作的速度可以从1.2秒降至0.0002秒以下。对于需要在GPU上训练但将数据集保存在CPU内存中的场景（如LLM训练），理解这一机制至关重要。
Craig Duncan, head of Xbox Game Studios, and Louise O'Connor, chief of staff at Xbox Game Studios, have stepped down from their roles. Their departures mark a leadership change within Microsoft's Xbox game development division.
Ratchet is an AI delivery framework designed to ensure continuous forward progress in development cycles. It creates a loop where each step builds on the previous one, preventing regression and enabling consistent, incremental improvements in AI-driven projects.
OpenAI reported that Codex is experiencing an outage, as detailed in a status incident update. The incident page provides ongoing information about the service disruption for users relying on Codex.
The article argues that blaming QA for delivery delays overlooks deeper systemic inefficiencies in development workflows, such as unclear requirements, poor communication, and inadequate tooling. It advocates for diagnosing root causes in the process rather than placing blame on teams.
Microsoft Clarity, a free user behavior analytics tool, is reportedly experiencing an outage, with users unable to access the dashboard or data. The status of the service is being monitored for restoration.