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CppCon 2025 Back to Basics: Custom Allocators Explained - From Basics to Advanced -- Kevin Carpenter

By Blog Staff | Apr 7, 2026 10:16 AM | Tags: None

Registration is now open for CppCon 2026! The conference starts on September 12 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2026!

Back to Basics: Custom Allocators Explained - From Basics to Advanced

by Kevin Carpenter

Summary of the talk:

Effective memory management is crucial for building efficient and reliable C++ applications. Custom memory allocators provide a powerful tool for optimizing memory usage, reducing fragmentation, and improving performance. This talk will explore the intricacies of memory allocation in C++, from the basics of dynamic memory management to the implementation of custom allocators. Attendees will gain insights into the standard allocator model, techniques for designing custom allocators, and practical examples of their use in real-world applications.

Join us to unlock the full potential of memory management in your C++ projects.

using std::cpp 2026: Learning C++ as a newcomer - Berill Farkas

By jdgarcia | Apr 3, 2026 07:55 PM | Tags: None

What does a 15 years old girl think about learning C++?

Summary of the talk:

How it feels like to learn C++ as a teenager? What made her want to learn it and what difficulties did she come across while learning it?

CppCon 2025 Cache Me Maybe: The Performance Secret Every C++ Developer Needs -- Michelle D'Souza

By Blog Staff | Apr 3, 2026 10:14 AM | Tags: None

Cache Me Maybe: The Performance Secret Every C++ Developer Needs

by Michelle D'Souza

Summary of the talk:

Calling all code detectives! Grab your trench coats and magnifying glasses ... it's time to crack the case of sluggish C++ performance. In this thrilling investigation, we'll uncover the hidden world of your computer's built-in cache and how to harness it to turbocharge your code.

We'll comb through the fundamentals of caches like seasoned sleuths, uncover clues on optimizing access patterns, and interrogate suspects like false sharing and cache unfriendly data structures. We will also examine benchmark evidence based on real-world production code, exposing how each technique delivers the goods.

By the end of this mission, you'll be armed with a detective's toolkit of cache savvy strategies, ready to solve cross-platform performance mysteries and bring blazing fast code to justice. Cache you at this session, maybe!

CppCon 25 Matrix Multiplication Deep Dive || Cache Blocking, SIMD & Parallelization -- Aliaksei Sala

By Blog Staff | Mar 31, 2026 10:10 AM | Tags: None

Matrix Multiplication Deep Dive || Cache Blocking, SIMD & Parallelization

by Aliaksei Sala

Summary of the talk:

Matrix multiplication is a fundamental operation in scientific computing, game development, AI, and numerous high-performance applications. While its mathematical definition is simple, achieving optimal performance in C++ is far from trivial.

In this talk, we will explore different optimization techniques for matrix multiplication, from naive implementations to highly tuned versions leveraging modern hardware features. We will cover key performance-enhancing strategies such as loop unrolling, cache blocking, SIMD vectorization, parallelization using threads and more. Through benchmarking and profiling, we will measure the real impact of these optimizations.

By the end of this session, attendees will gain insights into two critical questions:

How hard is it to implement an optimized matrix multiplication in C++? How effective is C++ for achieving peak performance in this task?

This talk is suitable for developers interested in performance optimization, computational efficiency, and modern C++ techniques for numerical computing.

CppCon 2025 Practical Reflection With C++26 -- Barry Revzin

By Blog Staff | Mar 26, 2026 10:07 AM | Tags: None

Practical Reflection With C++26

by Barry Revzin

Summary of the talk:

With the adoption of Reflection for C++26, the landscape of what is possible has shifted. This talk will focus on implementing Struct-of-Arrays for an arbitrary aggregate, but will also take some detours to cover some techniques that will prove useful for solving a wide range of problems.

A Brief History of Bjarne Stroustrup, the Creator of C++ -- CultRepo

By Blog Staff | Mar 25, 2026 12:06 PM | Tags: None

In this portrait, we meet Bjarne Stroustrup where we talk about his childhood, his accidental entry into computer science (what is "datologi" anyway?), and the ideas that shaped one of the most influential programming languages ever made -- among many, many other things... like how pronouncing his last name involves a potato.

A Brief History of Bjarne Stroustrup, the Creator of C++

by CultRepo

Watch now:

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CppCon 2025 Threads vs Coroutines: Why C++ Has Two Concurrency Models -- Conor Spilsbury

By Blog Staff | Mar 23, 2026 10:04 AM | Tags: None

Threads vs Coroutines: Why C++ Has Two Concurrency Models

by Conor Spilsbury

Summary of the talk:

The C++11 standard introduced a powerful set of tools for concurrency such as threads, mutexes, condition variables, and futures. More recently, C++20 introduced another powerful but fundamentally different concurrency abstraction in the form of coroutines. But coroutines are not just an evolution or a replacement for threads. Instead, they each solve different problems in different ways. Choosing the right tool for the job requires understanding how each works under the hood and where they shine. This talk will help build that intuition by looking at how each interacts with the operating system and hardware which will help make better decisions when choosing which to use.

We'll explore how threads and synchronization primitives work at the operating-system and hardware level, from thread creation and scheduling to where context switching and synchronization introduce performance costs. We’ll then contrast this to the coroutine model introduced in C++20 which takes a fundamentally different approach by using a cooperative model based on the suspension and resumption of work.

Given this understanding, we’ll finish by applying this intuition to a set of real-world scenarios to identify whether threads or coroutines are a better fit for the problem at hand.

CppCon 2025 More Speed & Simplicity: Practical Data-Oriented Design in C++ -- Vittorio Romeo

By Blog Staff | Mar 18, 2026 09:58 AM | Tags: None

CppCon 2025 More Speed & Simplicity: Practical Data-Oriented Design in C++

by Vittorio Romeo

Summary of the talk:

Data-Oriented Design (DOD) presents a different way of thinking: prioritizing data layout not only unlocks significant performance gains via cache efficiency but can also lead to surprising simplicity in the code that actually processes the data.

This talk is a practical introduction for C++ developers familiar with OOP. Through a step-by-step refactoring of a conventional OOP design, we’ll both cover how data access patterns influence speed and how a data-first approach can clarify intent.

We’ll measure the performance impact with benchmarks and analyze how the refactored code, particularly the data processing loops, can become more direct and conceptually simpler.

Key techniques like Structure-of-Arrays (SoA) vs. Array-of-Structures (AoS) will be explained and benchmarked, considering their effects on both execution time and code clarity. We’ll pragmatically weigh the strengths (performance, simpler data logic) and weaknesses of DOD, highlighting how it can complement, not just replace, OOP.

We’ll also demonstrate that DOD doesn’t necessitate abandoning robust abstractions, showcasing C++ techniques for creating safe, expressive APIs that manage both complexity and performance.

Let’s learn how thinking “data-first” can make your C++ code faster and easier to reason about!

Range adaptors – 5 years after C++20 -- Hannes Hauswedell

By Hannes Hauswedell | Feb 23, 2026 03:18 PM | Tags: None

A look back on major design decisions in C++ Ranges and how they may be viewed today.

Range adaptors - 5 years after C++20

by Hannes Hauswedell

Watch now:

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Talk: Who’s Afraid of the Big Bad Template -- Coral Kashri

By Blog Staff | Jan 15, 2026 11:14 AM | Tags: None

Templates and metaprogramming considered as the big bad wolf of C++, and it’s time to stop being scared of this wolf, as it’s one of the most powerful creatures of C++.

Talk: Who’s Afraid of the Big Bad Template

by Coral Kashri

From the description:

In this talk I’ve demonstrated the power of this incredible creature, while I hope that this talk would be an easy enterence to this concept (pan intended), and to help you developing the anticipation to walk into the cave of metaprogramming.

The talk was give on Core C++ 2025.