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Open Source Linux
Open Source Linux
Nov 4, 2025 · Artificial Intelligence

Designing High‑Performance Networks for Large‑Scale AI Model Training

This article examines the challenges of building scalable, low‑latency, and cost‑effective network architectures—such as Clos/Fat‑Tree, Spine‑Leaf, Dragonfly, and Torus—for massive GPU clusters used in training trillion‑parameter AI models, comparing multi‑rail and single‑rail designs and highlighting real‑world implementations from Tencent and Alibaba.

AI trainingCLOSDragonfly
0 likes · 8 min read
Designing High‑Performance Networks for Large‑Scale AI Model Training
Open Source Linux
Open Source Linux
Jun 5, 2024 · Operations

Unraveling Data Center Congestion: Incast, ECN, and PFC Explained

This article examines why data‑center networks experience congestion, detailing many‑to‑one and all‑to‑all traffic patterns, the role of incast, and how mechanisms such as ECN and PFC can be tuned to achieve loss‑free, low‑latency communication.

CLOSData Center NetworkingECN
0 likes · 10 min read
Unraveling Data Center Congestion: Incast, ECN, and PFC Explained
Architects' Tech Alliance
Architects' Tech Alliance
Jun 1, 2024 · Industry Insights

Why Do Data Center Networks Congest? Unpacking Many‑to‑One and All‑to‑All Incast Scenarios

The article analyzes how CLOS spine‑leaf data‑center networks encounter congestion under many‑to‑one and all‑to‑all traffic patterns, explains the limitations of simply enlarging buffers, and details how ECN and PFC mechanisms can be tuned to achieve loss‑less, low‑latency operation.

CLOSData Center NetworkingECN
0 likes · 12 min read
Why Do Data Center Networks Congest? Unpacking Many‑to‑One and All‑to‑All Incast Scenarios
Architects' Tech Alliance
Architects' Tech Alliance
Jan 2, 2024 · Industry Insights

Why Switches Are the New Computing Backbone: Definitions, Architectures, and Market Trends

This article examines the global and Chinese switch market size, explains switch definitions and classifications, details hardware components and architectural styles—including Full‑Mesh, Crossbar, and CLOS—covers technical principles, performance metrics, and contrasts with hubs and routers, and explores data‑center and industrial switch deployments and their future challenges.

CLOSData centerIndustrial Switch
0 likes · 19 min read
Why Switches Are the New Computing Backbone: Definitions, Architectures, and Market Trends
Architects' Tech Alliance
Architects' Tech Alliance
Nov 26, 2023 · Fundamentals

Switches: Computing Base and New Opportunities (2023) – Definitions, Classifications, Architecture, and Applications

This article provides a comprehensive overview of network switches, covering global market trends, definitions, OSI‑based classifications, hardware components, various switching architectures such as CLOS and leaf‑spine, performance metrics, differences from hubs and routers, industrial switch requirements, and the overall industry chain.

CLOSLeaf-SpineNetworking
0 likes · 15 min read
Switches: Computing Base and New Opportunities (2023) – Definitions, Classifications, Architecture, and Applications
Architects' Tech Alliance
Architects' Tech Alliance
Oct 30, 2023 · Industry Insights

Why Switches Are the New Computing Backbone: Definitions, Architectures, and Market Trends

This article provides a comprehensive analysis of network switches, covering global market size, definitions, classifications, hardware components, architectural styles such as CLOS and Spine‑Leaf, technical principles, performance metrics, data‑center and industrial use cases, and the overall industry supply chain.

CLOSData centerHardware
0 likes · 16 min read
Why Switches Are the New Computing Backbone: Definitions, Architectures, and Market Trends
Architects' Tech Alliance
Architects' Tech Alliance
Sep 7, 2021 · Fundamentals

Understanding Fat-Tree (CLOS) Network Architecture for Data Centers

The article explains the Fat-Tree (CLOS) network topology introduced in 2008, describing its non‑convergent bandwidth design, three‑layer structure, practical benefits, common configurations, and limitations, while also providing references and visual illustrations of the architecture.

CLOSData Center NetworkFat-Tree
0 likes · 7 min read
Understanding Fat-Tree (CLOS) Network Architecture for Data Centers
UCloud Tech
UCloud Tech
Mar 14, 2019 · Cloud Computing

How UCloud’s DCN V4 Architecture Boosted Data Center Capacity and Performance

This article details UCloud's transition from the V3 to V4 data‑center network architecture, explaining why the older design fell short, how the new 25 G/100 G three‑level CLOS, POD, and DC Group concepts were implemented, and the resulting four‑fold increase in server‑port capacity and performance.

CLOSDCNData center
0 likes · 12 min read
How UCloud’s DCN V4 Architecture Boosted Data Center Capacity and Performance