LLM ARCHITECTURE & AGENTIC RUNTIMES ✦

Frontier LLM Architecture
& Agent Systems

In-depth engineering notes on Transformer KV-cache topologies, DeepSeek MLA, vLLM high-throughput serving, quantization, and production Agent runtimes.

LLM_TOPOLOGY_MONITOR // PROD ONLINE
INFERENCE ENGINE vLLM PagedAttention
KV Cache -68%
ATTENTION TOPOLOGY DeepSeek MLA (Latent Compression)
1/7 KV Footprint
AGENT RUNTIME Model Context Protocol (MCP)
Loop & Tools
BENCHMARK RADAR Frontier Arena & SWE-bench
Verified

Latest Articles

Frontier technical notes and engineering practices

Inference Architecture

Inside DeepSeek's Trillion-Token Engine: DeepInfer and deepseek-recipe Architecture from Silicon to Protocol Layer

From physical silicon foundations and kernel matrices to 1:1 PD disaggregation topologies, DSpark dynamic speculative decoding, SWA bounded replay, deepseek-recipe protocol layers, and $38/GPU/h unit economics: a complete architectural dissection of DeepSeek's production inference stack.

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Production Ops & NCCL Tuning

Production InfiniBand Deployment, Cluster Operations, and NCCL Tuning: OFED Drivers, OpenSM HA, ibdiagnet Fabric Auditing, and GPUDirect RDMA

Production InfiniBand cluster operations: MLNX_OFED driver stacks, OpenSM high availability, ibdiagnet fabric health auditing, and NCCL GPUDirect RDMA tuning.

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Fat-Tree & Adaptive Routing

InfiniBand AI Cluster Networking in Practice: Fat-Tree Topologies, Rail-Optimized Architecture, Adaptive Routing (AR), and In-Network Reduction (SHARP)

AI cluster fabric topologies: Non-blocking Fat-Trees, Rail-Optimized cabling, Adaptive Routing (AR), SHARP in-network aggregation, and congestion mitigation.

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InfiniBand & Subnet Manager

InfiniBand Architecture First Principles: Physical Link Rates, Credit-Based Link Flow Control, and Subnet Manager Fabric Orchestration

InfiniBand hardware architecture: SDR to NDR/XDR link speeds, 4b/5b to PAM4 modulation, credit-based flow control, Virtual Lanes, and OpenSM subnet management.

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Linux Kernel & eBPF Networking

Linux Kernel Networking Subsystem in Depth: From NIC Drivers, NAPI, and Ring Buffers to eBPF XDP Wire-Speed Forwarding

Linux kernel networking internals: NIC RX Ring Buffers, DMA transfers, NAPI hybrid polling, sk_buff lifecycle, RSS multi-queue affinity, and eBPF XDP wire filtering.

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RDMA & RoCEv2

RDMA High-Performance Networking Foundations: Kernel Bypass, Zero-Copy, Queue Pairs, and Lossless RoCEv2 (PFC/ECN) Architecture

RDMA high-performance networking: Kernel bypass, hardware zero-copy, Queue Pair ibverbs verbs, and lossless RoCEv2 with 802.1Qbb PFC and DCQCN congestion control.

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About Author

Engineering profile, technical creed, and research vectors

ARCHITECT DOSSIER // BUPT CS

ifnodoraemon (Nobita)

LLM Systems & Autonomous Agent Architect

This is my technical dossier documenting deep-dives into LLM foundation architectures, distributed serving post-mortems, and production agentic runtimes. Graduated with a B.S. in Computer Science from Beijing University of Posts and Telecommunications (BUPT), focusing on trillion-parameter inference serving, KV Cache memory topology modeling, and production-grade autonomous agent loops.

“Code must be verifiable, data must have provenance, and topology must be backed by mathematics. Moving beyond shallow prompts into rock-solid AI systems engineering.”

Explore Architect Dossier & Principles →

Core Engineering Vectors

⚡
Distributed Serving & Kernels 4-Node 32x H100 Clusters · vLLM PagedAttention · FP8 Quant
🧠
Attention Topology & Memory Wall DeepSeek MLA Latent Compression · KDA Progressions · RoPE Scaling
🤖
Autonomous Agent Systems & Runtimes Model Context Protocol (MCP) · MCTS Reflection · Container Sandboxes
65+
DEEP WHITEPAPERS
100%
BARE-METAL VERIFIED
32GPUs
H100 CLUSTER PROD

TECH MATRIX & INFRA

K8s & GPUStack (MaaS) A800 / H800 / 910B / PPU 810E vLLM & SGLang Serving DeepSeek MLA & KDA Model Context Protocol (MCP) Java & Spring Boot Microservices Python 3.13 & FastAPI scikit-learn (SVM / NLP) C++ / Python Qt Cross-Platform Desktop React & Next.js Vue 3 & TypeScript PyTorch & Triton Docker & Linux eBPF