Implementing New Algorithm with CUDA Kernels | CUDA C++ Class Part 3

Implementing New Algorithm with CUDA Kernels | CUDA C++ Class Part 3

🎙 NVIDIA Developer 👥 222K 📅 November 6, 2025 ⏱ 72 min 👁 8K 📄 tutorial 🧭 2026-08-13
Available in: English (current) Français

Keywords

CUDA kernelsthread blocksatomic operationsshared memoryhistogram

Summary

This video is the third part of NVIDIA’s Modern CUDA C++ Programming Class. It teaches how to implement custom algorithms on the GPU using CUDA kernels, moving beyond library-based approaches like Thrust. The instructor explains the execution space model, including host, device, and global functions, and demonstrates how to launch kernels with the triple chevron syntax. Key concepts covered include thread blocks, grid dimensions, and computing global thread indices. The video includes hands-on exercises, such as implementing a symmetry check and a histogram, with solutions provided. It also covers debugging tools like Compute Sanitizer and the importance of boundary checks. Later sections delve into atomic operations, privatization, shared memory, and cooperative algorithms, culminating in an introduction to the CUB library. The tutorial emphasizes practical performance optimization and best practices for writing efficient GPU code.

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Critical Evaluation

Value of the Information & Strength of the Argument

The video provides substantial value by offering a structured, hands-on approach to learning CUDA kernel programming. It builds on previous parts and reinforces concepts through exercises and solutions. The argumentation is solid, with clear explanations of why certain techniques are necessary, such as the need for atomic operations to avoid data races. The instructor effectively demonstrates performance improvements through incremental optimizations, making the reasoning behind each step transparent. The use of real-world examples, like the temperature simulation, helps contextualize the material. The tutorial is well-paced and encourages active learning, which enhances its educational value.

Scientific Rigor, Source Quality, Title Accuracy

The scientific rigor is high, as the content is produced by NVIDIA, a leading authority in GPU computing. The explanations are technically accurate and align with CUDA documentation. The video references official resources, including the GitHub repository for exercises and the NVIDIA DLI course, which adds credibility. The title accurately reflects the content, focusing on implementing algorithms with CUDA kernels. The tutorial is well-structured, with clear objectives and a logical progression. The use of debugging tools like Compute Sanitizer demonstrates a commitment to correctness. Overall, the sources are reliable and the content is presented with precision.

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Title / Content Match

The title accurately reflects the content: it focuses on implementing new algorithms with CUDA kernels, and it is indeed part 3 of a CUDA C++ class.

Quality & Reliability

9/10

High-quality tutorial from NVIDIA Developer, with clear explanations, practical exercises, and references to official documentation and tools. The content is accurate and well-structured, though it is a tutorial rather than a peer-reviewed source.

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Contribution & Novelties

This video provides a practical, hands-on introduction to writing custom CUDA kernels, which is essential for developers who need to implement algorithms not covered by existing libraries. It bridges the gap between using high-level libraries like Thrust and low-level GPU programming. The tutorial’s unique contribution is its focus on modern C++ practices, such as using spans and avoiding raw pointers, and its emphasis on debugging and performance optimization. It also introduces advanced topics like atomic operations, privatization, and shared memory, which are crucial for writing efficient parallel code.

Pour aller plus loin :

  • CUDA C++ Programming Guide — Official documentation for CUDA programming, covering kernels, memory hierarchy, and performance optimization.
  • Compute Sanitizer — Tool for detecting memory errors and race conditions in CUDA kernels.
  • CUB Library — NVIDIA’s library of reusable primitives for CUDA, including device-wide operations like histograms.

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Radar Profile

The radar profile shows high scores across all dimensions, indicating a well-rounded tutorial with strong information content, technical depth, and reliability. The only slightly lower score is in technical level, which is appropriate for an intermediate audience.

Reliability 9/10