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Refining Core Development Skills
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Refining Core Development Skills

Fei has over 10 years of development experience at Tencent and Sogou. Through this account, he shares his deep insights on performance.

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Latest from Refining Core Development Skills

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Refining Core Development Skills
Refining Core Development Skills
Aug 26, 2025 · Fundamentals

How NVIDIA’s Fermi Architecture Revolutionized GPU Computing: Key Improvements Explained

Fermi, NVIDIA’s 2010 GPU architecture, introduced major upgrades over the Tesla line—including a 40 nm process, vastly increased transistor count, GDDR5 memory, L2 cache, enhanced FP64 performance, ECC support, and unified CPU‑GPU addressing—making it the first truly complete GPU computing platform.

CUDA optimizationECC memoryFP64 performance
0 likes · 12 min read
How NVIDIA’s Fermi Architecture Revolutionized GPU Computing: Key Improvements Explained
Refining Core Development Skills
Refining Core Development Skills
Aug 7, 2025 · Fundamentals

Why NVIDIA’s First Data‑Center GPU Revolutionized Computing: Inside the Tesla G80 Architecture

This article explains how NVIDIA transitioned from gaming graphics cards to general‑purpose GPUs with the first data‑center Tesla GPU, detailing the unified shader architecture, the internal components of TPCs and SMs, CUDA 1.0 programming basics, and performance calculations that illustrate the massive computational advantage over contemporary CPUs.

CUDAGPGPUGPU architecture
0 likes · 23 min read
Why NVIDIA’s First Data‑Center GPU Revolutionized Computing: Inside the Tesla G80 Architecture
Refining Core Development Skills
Refining Core Development Skills
Mar 25, 2025 · Fundamentals

Understanding Linux Kernel Physical Memory Management and the memblock Allocator

Linux does not expose all physical memory to users; this article explains why the kernel reserves memory, detailing the early memblock allocator, crash kernel reservations, page structure overhead, and the handoff to the buddy system, illustrating how these mechanisms consume several hundred megabytes of RAM.

Crash KernelMemory ManagementPage Structures
0 likes · 15 min read
Understanding Linux Kernel Physical Memory Management and the memblock Allocator
Refining Core Development Skills
Refining Core Development Skills
Feb 27, 2025 · Fundamentals

Inspecting Server Memory Hardware Details with dmidecode

This article explains how software developers can use the Linux dmidecode command to retrieve detailed server memory hardware information, including size, type, speed, bit width, ECC, channel placement, and rank, and interprets the output to better understand the underlying hardware.

DDR4dmidecodehardware
0 likes · 9 min read
Inspecting Server Memory Hardware Details with dmidecode
Refining Core Development Skills
Refining Core Development Skills
Feb 19, 2025 · Operations

Linux Kernel Memory Detection via E820 Mechanism

This article explains how the Linux kernel detects physical memory during boot by leveraging the E820 mechanism, where firmware reports memory ranges via interrupt 15H, enabling the kernel to map usable memory addresses for subsequent allocation.

E820Linux kernelMemory Management
0 likes · 8 min read
Linux Kernel Memory Detection via E820 Mechanism