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震惊,英伟达GPU竟带定位器
半导体芯闻· 2025-12-10 08:14
Core Insights - Nvidia has developed a location verification technology to indicate the country of its chips, aimed at preventing smuggling to restricted export countries [1] - This feature will be available as a software option for customers, utilizing Nvidia's GPU confidential computing capabilities [1] - The software will initially be available on the latest "Blackwell" series chips, which offer enhanced security features compared to previous generations [1] Group 1: Confidential Computing Overview - Confidential computing is a technology that protects data in use, preventing unauthorized access or tampering during processing [3][4] - It creates a trusted execution environment (TEE) using encryption keys bound to the processor, ensuring data privacy and integrity [3][4] - This technology addresses the last gap in data lifecycle protection, focusing on preventing device owners from accessing user data in cloud and edge computing environments [5] Group 2: Technical Implementation - The foundation of confidential computing is the root of trust, which relies on unique security keys for each processor [8] - It utilizes a secure boot mechanism to verify firmware integrity and isolates a secure enclave for application execution [8] - Nvidia's H100 GPU is the first to support confidential computing, enabling secure operations in traditional virtual machines and Kubernetes environments [9] Group 3: Performance and Compatibility - The confidential computing mode of the H100 GPU includes various operational modes, ensuring data and instructions are encrypted during transmission [9][10] - Performance remains largely unaffected in terms of native computing power and HBM bandwidth, with overhead primarily from CPU-GPU encrypted transmission [10] - Collaboration with CPU manufacturers is essential for implementing confidential computing capabilities, ensuring device integrity and security [10]