高性能计算(HPC)网络

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HPC网络瓶颈,何解?
半导体行业观察· 2025-07-06 02:49
Core Viewpoint - High-performance computing (HPC) Ethernet aims to enhance rapid communication between computing nodes, minimizing latency and maximizing bandwidth to ensure fast and reliable data transmission [1] Group 1: Challenges in HPC Networks - The increase in data volume and computational demands has led to high operational costs, low scalability, and unexpected performance limitations [1] - Companies are rapidly expanding and investing in new hardware and cloud computing, resulting in overly complex networks and configurations [1] - Performance bottlenecks arise from data-intensive workloads, which hinder the potential of modern hardware [2] Group 2: Key Trends Causing Costly Issues - Slow information storage and retrieval in AI workflows obstruct downstream processes, especially as AI processors grow in scale and speed [2] - The increasing use of heterogeneous architectures can lead to bottlenecks due to mismatched interconnects among different models and generations [2] Group 3: Evolution of Network Technology - In the early 21st century, 10 Gigabit Ethernet (GbE) was seen as the ultimate goal for HPC, but it became clear that even 25 GbE and 40 GbE were insufficient for high-bandwidth workloads [4] - The IEEE P802.3df task group is developing an 800 GbE parallel structure, anticipating a 55-fold increase in bandwidth demand by 2025 compared to 2017 [4] Group 4: Solutions to Avoid Bloat and Bottlenecks - Professionals must balance between over-provisioning and under-utilization to meet customer demands while avoiding unnecessary expenses [5] - Dynamic load balancing algorithms can alleviate bottlenecks by redistributing traffic to underutilized nodes [5] - Strategic dataset placement can reduce latency by keeping frequently accessed information at the forefront of efficient systems [5] Group 5: Future Focus for HPC Networks - As AI technology advances, the scale of models will continue to grow, necessitating manufacturers to rapidly develop new computing hardware [6] - The exponential growth in computational demands and dataset sizes makes it essential for professionals to prepare for future challenges [6]