Jörn Dinkla's Blog

Mar 31, 2025 software-engineering

Structured Concurrency in Java 24 (JavaSpektrum)

I’ve written an article for JavaSpektrum 2/2025 about Structured Concurrency in Java 24. The article covers JEP 499, Java’s fourth preview of Structured Concurrency, which aims to make concurrent programming...

#java #concurrency #article #jvm #parallelism

Sep 13, 2022 software-engineering

Test driven development of concurrent programs in Kotlin at KKon 2022

Concurrent and asynchronous applications can be written in Kotlin with coroutines in a precise and structured way. Unfortunately, concurrency often increases the complexity and it is difficult to create bug-free...

#kotlin #parallelism #concurrency #talk #slides #quality-assurance

Apr 23, 2021 software-engineering

Coroutines in Kotlin at KKon 2021 Warmup

In my talk “Nebenläufigkeit mit Koroutinen strukturieren” at the KKon 2021 Warmup I explained how to structure and organize concurrent programs with coroutines in Kotlin.

#kotlin #parallelism #concurrency #talk #slides

Dec 01, 2019 software-engineering

Coroutines in Kotlin and Go in iX Developer - "Weniger warten, asynchron arbeiten"

In the article “Verteilte Systeme: weniger warten, asynchron arbeiten” (distributed systems: less waiting, asychronous working) in the german magazine iX Developer Moderne Softwareentwicklung - code(), build(), deploy() I explain the...

#article #kotlin #concurrency #parallelism #golang

May 06, 2019 software-engineering

Coroutines in Kotlin and Go on heise Developer

In the article “Weniger warten, asynchron arbeiten” (less waiting, asychronous working) published by heise Developer I explain the theoretical background of coroutines and how to use them in Kotlin and...

#article #kotlin #concurrency #parallelism #golang

Apr 23, 2019 software-engineering

Concurrency in Kotlin with coroutines

Coroutines are a “new” way to handle concurrency on the JVM. I gave an introduction to coroutines in Kotlin at Thoughtworks. This is basically the translation of the german slides....

#slides #talk #kotlin #concurrency #parallelism #jvm

Jörn Dinkla at the parallel 2019 conference

Feb 21, 2019 software-engineering

Talk about coroutines in Kotlin at the parallel 2019 conference

Coroutines are a “new” way to handle concurrency on the JVM. At the para//el 2019 conference, I gave an introduction to coroutines in Kotlin.

#slides #talk #kotlin #concurrency #parallelism #jvm

Unter der Haube - cuDNN schafft die Grundlage für Deep Learning mit GPUs

Dec 01, 2018 gpu-computing

Machine learning library 'cuDNN' explained in iX Developer

It’s very difficult to implement algorithms optimally for GPUs. Therefore NVIDIA provides the library cuDNN for deep learning with neural networks. This article published in the german magazine iX Developer...

#article #ai #parallelism #concurrency #machine-learning #data #nvidia-cuda #gpu-computing

Apr 04, 2017 gpu-computing

Talk about GPU computing with CUDA and OpenCL

In March 2017 I gave a talk about GPU computing with CUDA and OpenCL at the para//el 2017 conference in Heidelberg, Germany.

#c++ #parallelism #concurrency #slides #talk #nvidia-cuda #gpu-computing #opencl

Nov 30, 2016 gpu-computing

CUDA 8.0 on Mac OS/X

CUDA 8.0 on Mac OS X 10.12 gave me the following error:

#c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

Sep 30, 2016 gpu-computing

Using a device lambda in CUDA 8.0

In CUDA 8.0 C++ 11 lambdas can be used on the device. See the following code.

#c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

May 05, 2015 gpu-computing

Heat diffusion on multiple GPUs

The implementation of the heat diffusion equation on multiple GPUs is explained in the talk (in german).

#c++ #graphics #parallelism #concurrency #nvidia-cuda #gpu-computing #opencl

Multi-GPU-Computing: Eins, zwei, drei, ganz viele

Apr 24, 2015 gpu-computing

Talk at the parallel 2015 about Multi-GPU programming with Cuda, OpenCL and C++ AMP

At the parallel 2015 conference I gave an introduction into Multi-GPU programming with Cuda, OpenCL and C++ AMP.

#slides #parallelism #concurrency #talk #nvidia-cuda #gpu-computing

Mar 16, 2015 gpu-computing

A Good Introduction to C++ AMP

“C++ AMP: Accelerated Massive Parallelism with Microsoft Visual C++” is a good introduction to programming with C++ AMP. Unfortunately, at the time of this review, it is the only book...

#review #c++ #parallelism #concurrency #gpu-computing

Mar 06, 2015 gpu-computing

Examples for parallelism: ray tracer on the GPU

I tested the parallel ray tracer on all NVIDIA cards i bought. This page contains the results.

#c++ #graphics #parallelism #concurrency #gpu-computing #nvidia-cuda

Mar 03, 2015 software-engineering

Examples for parallelism: ray tracer

I wanted to learn some frameworks for parallel computing and i decided to implement a simple ray tracer as a "visual benchmark".

#c++ #java #graphics #parallelism #concurrency

Feb 23, 2015 gpu-computing

The Best Book on OpenCL 1.x

What makes “OpenCL in Action: How to Accelerate Graphics and Computation” special is that the author, Matthew Scarpino, truly tries to explain the programs. You learn the reasons behind his...

#review #c++ #parallelism #concurrency #gpu-computing #opencl

Jan 26, 2015 gpu-computing

Solid Optimization Tips for CUDA

While browsing through “CUDA Fortran for Scientists and Engineers”, I noticed that the authors provide valuable optimization tips. That piqued my curiosity.

#review #c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

Tipps & Tricks für den erfolgreichen Einsatz von GPU-Computing

May 07, 2014 gpu-computing

Talk at parallel 2014 about GPU-Computing

At the parallel 2014 I gave an introduction into the optimization of GPU kernels.

#slides #parallelism #concurrency #talk #nvidia-cuda #gpu-computing

Apr 20, 2014 gpu-computing

Inspiration for CUDA Experts in the Natural Sciences

The book “GPU Computing Gems (Emerald Edition)” is a collection of 50 scientific articles about experiences using GPU computing in various subject areas.

#review #c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

Apr 19, 2014 gpu-computing

Only recommended for die-hard CUDA fans

I had already read many articles from the series “CUDA, Supercomputing for the Masses” by Rob Farber on the Dr. Dobb’s website and was quite impressed. Back then in 2009,...

#review #c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

Apr 16, 2014 gpu-computing

Best CUDA Book for Advanced Users

With CUDA, it’s easy to speed up a calculation by a factor of 2-5. How to achieve higher speedups is explained in “CUDA Programming” by Shane Cook.

#review #c++ #parallelism #concurrency #nvidia-cuda #gpu-computing

Apr 01, 2014 gpu-computing

Good Tips for Performance Optimization

In “The CUDA Handbook”, Nicholas Wilt proves himself to be very competent and keen to experiment with kernel optimization. Advanced readers will find this book very beneficial.

#review #c++ #parallelism #concurrency #gpu-computing #nvidia-cuda

Mar 20, 2014 software-engineering

New Edition Required: Good Book, but Unfortunately Outdated

“Using OpenMP” is a good introduction and contains a few good performance tips.

#c++ #parallelism #concurrency #review

Mar 11, 2014 software-engineering

Currently the Best Presentation of Patterns for Shared Mutability

If you want to bring a bit of systematism to your parallel programming skills, “Structured Parallel Programming: Patterns for Efficient Computation” is the book to start with.

#parallelism #concurrency #c++ #review #opencl #nvidia-cuda #gpu-computing

GPU-Computing mit CUDA und OpenCL in der Praxis

May 25, 2012 gpu-computing

Talk at parallel 2012 about GPU-Computing

At the parallel 2012 I presented my experiences and learnings I gathered in GPU computing projects.

#slides #parallelism #concurrency #talk #nvidia-cuda #gpu-computing #opencl

Feb 23, 2012 software-engineering

Recommended as a Reference Work

“Patterns for Parallel Programming” is an important work for ‘parallel programmers’.

#review #parallelism #concurrency

Dec 12, 2011 software-engineering

Slides: 'Introduction to Parallel Computing'

These slides are for a course about parallel computing.

#slides #parallelism #concurrency

Dec 03, 2011 gpu-computing

Technical proofer of 'OpenCL in Action'

The OpenCL standard is not always easy and the technical proof was a challenge, because the code had to run on different os'es and platforms.

#c++ #gpu-computing #parallelism #concurrency #opencl

Dec 01, 2011 software-engineering

Very good in places, unpolished and too brief in others

Programming parallel and concurrent programs with shared memory and threads is complicated and very error-prone. Approaches such as Software Transactional Memory (STM), message-passing architectures, and actor models have been developed...

#parallelism #concurrency #jvm #review #object-functional

Nov 15, 2011 software-engineering

Only for 'Thread Monkeys'

With the title “The Art of Concurrency”, high expectations are set that are not met. The subtitle “A Thread Monkey’s Guide to Writing Parallel Applications” is more fitting for the...

#review #parallelism #concurrency #c++

Apr 07, 2010 software-engineering

Sony Alienates Early PlayStation 3 Fans

On April 1st, Sony released an update for the PlayStation 3 that discontinued support for Linux. This move angered many, sparking intense reactions and discussions.

#parallelism #concurrency

Jan 03, 2010 gpu-computing

CUDA Real-Time Ray Tracer

During the christmas holidays i rewrote my ray tracer for the NVIDIA CUDA architecture.

#parallelism #concurrency #graphics #gpu-computing

Sep 28, 2009 gpu-computing

Compiling OpenCL programs on Mac OS X Snow Leopard

I installed Snow Leopard on my laptop yesterday. I was very curious about OpenCL and installed the drivers and the GPU Computing SDK from NVIDIA.

#parallelism #concurrency #c++ #gpu-computing

Jun 14, 2009 software-engineering

Hyper-Threading with the Intel Core i7

I have got a new computer. As alway i build it myself. How much faster is it?

#parallelism #concurrency #c++

Jun 07, 2009 software-engineering

Parallelization with Haskell - Easy as can be

The functional programming language Haskell provides a very easy way of parallelization.

#parallelism #concurrency #functional-programming

Jun 04, 2009 software-engineering

Real-Time RayTracer running on Intel Core i7

I tested my ray tracer on Intel Core i7 920 @2.67 MHz.

#parallelism #concurrency #graphics #c++

May 24, 2009 software-engineering

Real-Time RayTracer running on Core 2 Duo

I tested my ray tracer on my Mac Book Pro.

#parallelism #concurrency #graphics #c++

May 19, 2009 software-engineering

Parallelization with the Cell Broadband Engine

I wanted to learn about the cell broadband engine in the Playstation 3 and wrote a parallel ray tracer for it.

#parallelism #concurrency #graphics #c++

Feb 01, 2008 games

Dynamic Languages Shootout / OOP 2008

The german magazine JavaSpektrum organized the "Dynamic Languages Shootout" contest for the OOP 2008 conference. The challenge was to create a computer game similiar to Scrabble in a dynamically typed...

#groovy #jvm #parallelism #concurrency

Nov 01, 2007 software-engineering

Rapid Application Development with Groovy

While i was cleaning up my hard disk on my Linux in 2007, i needed a program that displays the disk usage graphically. I didn't find a suitable one on...

#groovy #jvm #parallelism #concurrency

May 07, 1996 software-engineering

Dynamic Scheduling in Real-Time Systems

In this seminar paper (1996), written during my graduate studies in computer science, I cover scheduling algorithms for distributed real-time systems.

#parallelism #concurrency #algorithms #distributed

Feb 05, 1995 software-engineering

Optimal Fast List-Ranking and Prefix Algorithms

A seminar paper on optimal parallel algorithms for prefix sums and list ranking.

#parallelism #concurrency #algorithms

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