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Bryce Adelstein Lelbach & Ben Deane

Conor Hoekstra

The Algorithms + Data Structures = Programs Podcast (aka ADSP: The Podcast) is a programming podcast hosted by two NVIDIA software engineers that focuses on the C++ and Rust programming languages. Topics discussed include algorithms, data structures, programming languages, latest news in tech and more. The podcast was initially inspired by Magic Read Along. Feel free to follow us on Twitter at @adspthepodcast.

Algorithms + Data Structures = Programs

In this episode, Conor interviews Kevlin Henney about aphantasia, anendophasia, synesthesia, future and more!

Link to Episode 264 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
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 • ADSP: The Podcast: 
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About the Guest:

Kevlin Henney is an independent consultant, speaker, writer and trainer. His software development interests are in programming, practice and people. He has been a columnist for various magazines and websites. He is the co-author of A Pattern Language for Distributed Computing and On Patterns and Pattern Languages, two volumes in the Pattern-Oriented Software Architecture series, and editor of 97 Things Every Programmer Should Know and co-editor of 97 Things Every Java Programmer Should Know.

Show Notes

Date Recorded: 2025-12-11
Date Released: 2025-12-12

YOW Conferences!ADSP Episode 190: C++, Python and More with Kevlin Henney97 Things Every Programmer Should KnowDeclarative thinking, declarative practice - Kevlin Henney - Meeting C++ 2017AphantasiaAnendophasiaSynesthesiaRutherford & Fry: The Case of the Blind Mind's EyeWhat Do You Mean? - Kevlin Henney [ACCU 2019]The Way the Future Was • Kevlin Henney & James Lewis • GOTO 2025Overton WindowDarth Jar Jar - Star Wars Theory
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Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
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Episode 264: 🇦🇺 Aphantasia, Anendophasia & the Future with Kevlin Henney

In this episode, Conor and Bryce interview Sean Parent about the origin story of his career in software engineering!

Link to Episode 263 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
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 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
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Mastodon • Bryce Adelstein Lelbach: 
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About the Guest:

Sean Parent is a senior principal scientist and software architect managing Adobe's Software Technology Lab. Sean first joined Adobe in 1993 working on Photoshop and is one of the creators of Photoshop Mobile, Lightroom Mobile, and Lightroom Web. In 2009 Sean spent a year at Google working on Chrome OS before returning to Adobe. From 1988 through 1993 Sean worked at Apple, where he was part of the system software team that developed the technologies allowing Apple’s successful transition to PowerPC.

Show Notes

Date Recorded: 2025-10-10
Date Released: 2025-12-05

Source CodeTRS80Ohio Scientific ChallengerExidy Sorcerer
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 263: 🇳🇱 The Sean Parent Origin Story

In this episode, Conor and Bryce interview Sean Parent about generic programming and there is much chaos!

Link to Episode 262 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
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 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
About the Guest:

Sean Parent is a senior principal scientist and software architect managing Adobe's Software Technology Lab. Sean first joined Adobe in 1993 working on Photoshop and is one of the creators of Photoshop Mobile, Lightroom Mobile, and Lightroom Web. In 2009 Sean spent a year at Google working on Chrome OS before returning to Adobe. From 1988 through 1993 Sean worked at Apple, where he was part of the system software team that developed the technologies allowing Apple’s successful transition to PowerPC.

Show Notes

Date Recorded: 2025-10-10
Date Released: 2025-11-28

Koala bear cryingabscond Defintion • Sean's C++ Under the Sea Keynote
Pacific++ 2018: Sean Parent "Generic Programming"From Mathematics to Generic Programming (FM2GP)ParrotParrot on GitHub
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 262: 🇳🇱 Chaos with Sean Parent! Bikes, Buses, Waffles & More!

In this episode, Conor and Bryce record live from C++ Under the Sea! We interview Bernhard, Koen, talk about C++26 Reflection and more!

Link to Episode 261 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
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 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
About the Guests:

Bernhard is a senior system software engineer at NVIDIA, where he extends, optimizes and maintains the CUDA Core Compute Libraries (CCCL). Previously, he worked as software engineer among physicists at CERN on real-time and embedded software for the Large Hadron Collider, as well as data layout abstractions for heterogeneous architectures, for which he received a PhD in High Performance Computing from the University of Dresden, Germany. Before, he implemented GPU accelerated simulations and 3D visualizations of industrial machining processes. Since 2022, Bernhard is a voting member of WG21 and his interests span geometry, 3D visualizations, optimization, SIMD, GPU computing, refactoring and teaching C++.

Koen is an engineer specializing in high-quality software with a strong mathematical foundation. With a PhD in Computer Science from KU Leuven, his work bridges applied mathematics and performance-critical software engineering. As Team Lead for HMI Software at NV Michel Van de Wiele, he focuses on developing C++/Qt applications for textile production systems, optimizing performance, usability, and cloud integration. Passionate about elegant, efficient solutions, Koen brings deep expertise in numerical methods, system optimization, and software architecture.

Show Notes

Date Recorded: 2025-10-10
Date Released: 2025-11-21

Thrust DocsCUB LibraryC++26 Reflection ProposalADSP Episode 39: How Steve Jobs Saved Sean ParentParrotParrot on GitHub • Sean's C++ Under the Sea Keynote
Parrot sum
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 261: 🇳🇱 C++ Under the Sea 🇳🇱 Bernhard, Koen & C++26 Reflection!

In this episode, Conor and Bryce record live from C++ Under the Sea! We interview Ray and Paul from NVIDIA, talk about Parrot, scans and more!

Link to Episode 260 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
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 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
About the Guests:

Ray is a Senior Systems Software Engineer at NVIDIA since 2022. Studied Software Engineering at the University of Amsterdam. Founded the Dutch C++ Meetup in 2013 and co-organizes C++ Under the Sea since 2023. He has been programming for more than 25 years, his journey began on his father's Panasonic CF-2700 MSX--and has been hooked ever since. He is also 'the listener' of ADSP the podcast.

Paul Grosse-Bley was first introduced to parallel programming with C+MPI at a student exchange to Umeå (Sweden) in 2017 while studying Physics. In the following years he learned more about MPI, OpenMP, OpenACC, Thrust/parSTL and CUDA C++. After finishing his Master's degree in Physics at Heidelberg University (Germany) in 2021, he became a PhD candidate in Computational Science and Engineering researching the acceleration of iterative solvers in sparse linear algebra while being head-tutor for a course on GPU Algorithm Design. He learned using Thrust in 2019 shortly before learning C++ and became enamored with parallel algorithms which led to numerous answers on StackOverflow, contributions on GitHub, his NVIDIA internship in the summer of 2025 and full position starting in February of 2026.

Show Notes

Date Recorded: 2025-10-10
Date Released: 2025-11-14

NVIDIA BCM (Base Command Manager)C++11 std::ignoreC++20 std::bind_frontParrotParrot on GitHubParrot Youtube Video: 1 Problem, 7 Libraries (on the GPU)thrust::inclusive_scanSingle-pass Parallel Prefix Scan with Decoupled Look-back by Duane Merrill & Michael GarlandPrefix Sums and Their Applications by Guy BlellochParallel Prefix Sum (Scan) with CUDANVIDIA ON-Demand VideosA Faster Radix Sort Implementation
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library

Episode 260: 🇳🇱 C++ Under the Sea 🇳🇱 Ray, Paul, Parrot & Scanman!

In this episode, Conor and Bryce record live from NDC TechTown in Norway! We interview Vittorio Romeo and JF Bastien about C++, training, their talks and more!

Link to Episode 259 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
Socials

 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
About the Guests:

Vittorio is a passionate C++ expert with over a decade of professional and personal experience. His expertise covers library development, high-performance financial backends, game development, open-source contributions, and active participation in ISO C++ standardization. He is the coauthor of "Embracing Modern C++ Safely" and is a speaker at over 25 international conferences.

JF Bastien has worked on hardware, compilers, security, performance, web browsers, and airplanes. As chair of the C++ language evolution working group and co-designer of WebAssembly, his contributions have helped shape modern software development.

Show Notes

Date Recorded: 2025-09-24
Date Released: 2025-11-07

camomilla by Vittorio Romeoromeo.trainingRoku rostdASDP Episode 136: 🇬🇧 C++ On Sea Live 🇬🇧 CppCast, TLB HIT & Two's Complement!TLB.hitJAXOpenXLA[LATTE '22] Chris Leary: X-istentialism: Supercomputers, Silicon Atoms, and the Science Between!Guest Lecture - XLS (Chris Leary)Project DenverIntel pays NVIDIA $1.5B • NDC TechTown JF Talk
*(char*)0 = 0; - What Does the C++ Programmer Intend With This Code? - JF Bastien - C++ on Sea 2023Keynote: Safety and Security: The Future of C++ - JF Bastien - CppNow 2023All the Safeties: Safety in C++ - Sean Parent - CppNow 2023 • NDC TechTown Vittorio Romeo Talk
More Speed & Simplicity: Practical Data-Oriented Design in C++ - Vittorio Romeo - CppCon 2025CppCon 2014: Mike Acton "Data-Oriented Design and C++"
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 259: 🇳🇴 NDC TechTown 🇳🇴 Vittorio Romeo & JF Bastien

In this episode, Conor and Bryce record live from Norway! Bryce explains the taxonomy of algorithms: serial, parallel, and cooperative!

Link to Episode 258 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
Socials

 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
Date Recorded: 2025-09-23
Date Released: 2025-10-31

MPIIPCRow-wise Softmax in TritonRow-wise Softmax in ParrotCCCL - Parallel and Cooperative Algorithms
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 258: 🇳🇴 An Algorithm Taxonomy (Serial, Parallel, Cooperative)

In this episode, Conor and Bryce record live from Norway! They continue their chat about the replicate, scatter, gather and run length decode algorithms!

Link to Episode 257 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
Socials

 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
Date Recorded: 2025-09-23
Date Released: 2025-10-24

thrust::gatherthrust::scatterthrust::permutation_iteratorthrust::counting_iteratorthrust::sequencethrust::transform_iteratorthrust::copy_if (stencil overload)parrot::replicate Implementationthrust::reduce_by_keycub::RunLengthDecodeC++20 std::views::takeC++20 std::views::take_whileAPL Wiki ReplicateArrayCast Episode 110: Implementing Replicate
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 257: 🇳🇴 Live from Norway! Replicate, Scatter, Gather & RLD (Part 3)

In this episode, Conor and Bryce record live from Denmark! They talk about the replicate, scatter, gather and run length decode algorithms!

Link to Episode 256 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
Socials

 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
Date Recorded: 2025-09-20
Date Released: 2025-10-17

thrust::gatherthrust::scatterthrust::permutation_iteratorthrust::counting_iteratorthrust::sequencethrust::transform_iteratorthrust::copy_if (stencil overload)parrot::replicate ImplementationJAXthrust::reduce_by_keycub::RunLengthDecodeAPL Wiki ReplicateArrayCast Episode 110: Implementing ReplicateRow-wise Softmax in TritonRow-wise Softmax in Parrot
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 256: 🇩🇰 Algorithms: Replicate, Scatter, Gather & RLD (Part 2)

In this episode, Conor and Bryce record live from Denmark! They recap the C++ Copenhagen Meetup hosted by Symbion, the replicate algorithm and much more!

Link to Episode 255 on WebsiteDiscuss this episode, leave a comment, or ask a question (on GitHub)
Socials

 • ADSP: The Podcast: 
Twitter • Conor Hoekstra: 
Twitter • | 
BlueSky • | 
Mastodon • Bryce Adelstein Lelbach: 
Twitter
Date Recorded: 2025-09-20
Date Released: 2025-10-10

Roku Engineering SymposiumDenmark DGX SuperpodTweet of Beer PouringAPL replicateC++98 std::copy_ifArrayCast Episode 110: Implementing ReplicateAPL Wiki Replicatethrust::copy_if (stencil overload)cub::RunLengthDecodethrust::reduce_by_keythrust::permutation_iteratorBDE LibrariesASL LibrariesEASTL
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 255: 🇩🇰 C++ Copenhagen Meetup & Replicate

In this episode, Bryce and Conor respond to some reddit comments on Episode 80.

Twitter

ADSP: The PodcastConor HoekstraBryce Adelstein Lelbach
Show Notes

Date Recorded: 2022-06-04
Date Released: 2022-06-17

ADSP Episode 80: C++ Multidimensional Arrays and GPUsADSP Episode 80 Reddit Post & CommentsJames Berrow cpp.chat Episode: Colour Is Not Black and WhiteSIMTSIMDC++ std::mdspanC++ std::mdarrayNVIDIA cuBLASNVIDIA cutlassNVIDIA cuNumericNVIDIA MATXC++ std::transformC++ std::reduceC++ count_ifJ ; (raze)APL , (ravel)GPU SM (Streaming Multiprocessor)ARRAY 2022PLDI 2022
Intro Song Info

Miss You by Sarah Jansen https://soundcloud.com/sarahjansenmusic
Creative Commons — Attribution 3.0 Unported — CC BY 3.0
Free Download / Stream: http://bit.ly/l-miss-you
Music promoted by Audio Library https://youtu.be/iYYxnasvfx8

Episode 82: GPUs - Responding To Reddit Comments

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