Pitfall Record: Enabling PGO Compilation Optimization in GCC 7.3.0 Results in Missing gcov Symbols? The Final Solution is Here!

Pitfall Record: Enabling PGO Compilation Optimization in GCC 7.3.0 Results in Missing gcov Symbols? The Final Solution is Here!

1. Background In the performance optimization practice of C/C++, PGO (Profile-Guided Optimization) is a very effective compilation optimization technique. The basic process is divided into two stages: Generation Stage (profile-generate): The compiler inserts additional counting logic into the code (e.g., function call counts, branch hit counts, etc.). Usage Stage (profile-use): The runtime collected profile data … Read more

Introduction to PLC Troubleshooting: Basic Techniques and Advanced Strategies (Part 3)

Introduction to PLC Troubleshooting: Basic Techniques and Advanced Strategies (Part 3)

The final part of the introduction to troubleshooting is here. Friends who haven’t read the first two parts can check them out first: Introduction to PLC Troubleshooting: Basic Techniques and Advanced Strategies (Part 1) Introduction to PLC Troubleshooting: Basic Techniques and Advanced Strategies (Part 2) The main content is as follows: 2. Advanced Methods of … Read more

Understanding C++ References from an Assembly Perspective: The Pointer Nature Behind Syntax Sugar

Understanding C++ References from an Assembly Perspective: The Pointer Nature Behind Syntax Sugar

1. Introduction When learning C++, we often hear the phrase: “A reference is an alias for a variable.” This statement is quite intuitive at the beginner level, but if we stop at this understanding, it becomes difficult to grasp how it operates at a lower level. Under the compiler’s handling, references may behave similarly to … Read more

Optimization of Hydrogeological Parameters Based on Sparrow Search Algorithm in Matlab

Optimization of Hydrogeological Parameters Based on Sparrow Search Algorithm in Matlab

Optimization of Hydrogeological Parameters Based on Sparrow Search Algorithm in Matlab Abstract: To improve the accuracy of hydrogeological parameter solutions and expand optimization methods for hydrogeological parameters, this paper utilizes the Theis basic formula and the Sparrow Search Algorithm to optimize the calculation of the Theis formula’s transmissivity and storage coefficient, aiming to verify the … Read more

Achieving Extreme Performance Logging in Rust

Achieving Extreme Performance Logging in Rust

In high-performance computing fields, such as high-frequency trading (HFT), every nanosecond is crucial. A slight delay can lead to significant opportunity costs. Therefore, developers must scrutinize every aspect of their code to eliminate unnecessary performance overhead. Logging is essential for debugging and monitoring, but if implemented poorly, it can itself become a major performance bottleneck. … Read more

Advanced Python Aggregate Modeling! Solving Overlaps, Errors, and Integrating Finite Element Analysis (Includes Optimization Code)

Advanced Python Aggregate Modeling! Solving Overlaps, Errors, and Integrating Finite Element Analysis (Includes Optimization Code)

In the previous article, we taught you how to run a basic aggregate model using Python. We received many messages asking: “What to do if particles overlap?” “How to use the exported data?” “How to fix topology errors?” Today, we present an advanced version focusing on three core pain points:Particle overlap, common errors, and integration … Read more

Research on Optimal PMU Placement Optimization Based on ILP with Matlab Code

Research on Optimal PMU Placement Optimization Based on ILP with Matlab Code

โœ… Author’s Profile: A research enthusiast and Matlab simulation developer, skilled in data processing, modeling simulation, program design, complete code acquisition, paper reproduction, and scientific simulation. ๐ŸŽ Previous Reviews: Follow my personal homepage:Matlab Research Studio ๐ŸŠ Personal Motto: Investigate to gain knowledge, complete Matlab code and simulation consultation available via private message. ๐Ÿ”ฅ Content Introduction … Read more

BLAS: An Efficient Linear Algebra Library in C++

BLAS: An Efficient Linear Algebra Library in C++

BLAS: An Efficient Linear Algebra Library in C++ In the fields of computer science and engineering, linear algebra computations are at the core of many applications. From computer graphics to machine learning, from data analysis to physical simulations, operations involving matrices and vectors are ubiquitous. The BLAS (Basic Linear Algebra Subprograms) library is designed specifically … Read more

A Decade of Innovation: A Huawei Researcher’s Journey from Breakthroughs to Practical Applications

A Decade of Innovation: A Huawei Researcher's Journey from Breakthroughs to Practical Applications

From Breakthrough to Implementation: The Journey of a Researcher–By | Yan Siyu– With my left hand supporting the table, my knuckles tense, I create a stable arch for the cue; my right hand firmly grips the end of the cue, I hold my breath, gather strength, and push the cue. With a crisp strike, the … Read more

LIBSHALOM: Optimizing Small and Irregular-Shaped Matrix Multiplications on ARMv8 Multi-Core Processors

LIBSHALOM: Optimizing Small and Irregular-Shaped Matrix Multiplications on ARMv8 Multi-Core Processors

The International Conference for High Performance Computing, Networking, Storage and Analysis (SC) was held from November 14-19, 2021, in St. Louis, Missouri, USA. SC is one of the top conferences in the field of high-performance computing, primarily featuring significant academic contributions in areas such as system architecture, high-performance networking, and system performance evaluation. To date, … Read more