May 2017

Accelerating your C++ on GPU with SYCL—Simon Brand

A post on writing GPGPU code in C++ using the SYCL standard from the Khronos group.

Accelerating your C++ on GPU with SYCL

By Simon Brand

From the article:

Leveraging the power of graphics cards for compute applications is all the rage right now in fields such as machine learning, computer vision and high-performance computing. Technologies like OpenCL expose this power through a hardware-independent programming model, allowing you to write code which abstracts over different architecture capabilities. The dream of this is “write once, run anywhere”, be it an Intel CPU, AMD discrete GPU, DSP, etc. Unfortunately, for everyday programmers, OpenCL has something of a steep learning curve; a simple Hello World program can be a hundred or so lines of pretty ugly-looking code. However, to ease this pain, the Khronos group have developed a new standard called SYCL, which is a C++ abstraction layer on top of OpenCL. Using SYCL, you can develop these general-purpose GPU (GPGPU) applications in clean, modern C++ without most of the faff associated with OpenCL.

CppChat[22] C++Now 2017 [2017-05-19]



CppChat[22]: C++Now 2017

with Alex Zaitsev, Anastasia Kazakova, Jason Turner, Jens Weller, Jonathan Müller, Kjell Hedstrom, Malte Skarupke, Matt Calabrese, Morris Hafner, Odin Holms, Peter Bindels, Robin Kuzmin, Vittorio Romeo, and Jon Kalb.


From the chat:

This episode was recorded at C++Now. Conference attendees talk about their C++Now experiences and favorite sessions. Guests include some of the speakers, volunteers, sponsors, and staff.

Better C++ / Chicago July 12-14, 2017

Join us for a 3 day training event in Chicago, IL, USA July 12-14, 2017

Better C++ / Chicago

by Jason Turner

About the training:

Through this training you will gain a better understanding of how to write clean, maintainable, and well performing C++ code.

The topics covered apply to all types of C++ development: embedded, system or application development.

Jason's classes are highly interactive and have a limited class size to ensure that everyone has sufficient opportunity to participat

A la carte tickets are available for those wishing to attend only part of the training.

Wednesday: Demystifying C++11 and Beyond

C++11, 14, and 17 added many new features to C++ that have made many question the overhead of using these new features and the complexity they add to the language. We will make an in depth examination of these features to give you confidence in using and deploying modern C++ techniques in your organization.

Thursday: Understanding Object Lifetime in C++

C++ has what very few other languages have: a well defined object life cycle. Understanding this key aspect of the language is critical for writing high quality C++.
We will describe the lifecycle of an object in C++ and work through increasingly complex examples. There will be something for C++ developers of all skill levels to learn.

Friday: C++ Best Practices

On the final day of the course we will cover a series of tangible best practice rules for how to write C++ code that is maintainable and efficient by default.
We will wrap up with a discussion of how to use the tools available to maintain code quality.

Frozen - An header-only, constexpr alternative to gperf for C++14 users—Serge Guelton

Check this out!

Frozen - An header-only, constexpr alternative to gperf for C++14 users

by Serge Guelton

From the article:

An open source, header-only library that provides fast, immutable, constexpr-compatible implementation of std::set, std::map, std::unordered_map and std::unordered_set to C++14 users. It can be used as an alternative to gperf...

C++Now 2017—Michael Park

Trip report!

C++Now 2017

by Michael Park

From the article:

I just returned from C++Now 2017 in Aspen, CO. This was my second time attending the conference and it was just as amazing as last year. My girlfriend decided to come along this time, since Aspen is such a beautiful place. We flew into Denver, rented a car and took the beautiful 4-hour drive into Aspen. She was very happy ��. Strongly recommended...

CppCon 2016: Want fast C++? Know your hardware!—Timur Doumler

Have you registered for CppCon 2017 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2016 for you to enjoy. Here is today’s feature:

Want fast C++? Know your hardware!

by Timur Doumler

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

As C++ evolves, it provides us with better and more powerful tools for optimal performance. But often, knowing the language very well is not enough. It is just as important to know your hardware. Modern computer architectures have many properties that can impact the performance of C++ code, such as cache locality, cache associativity, true and false sharing between cores, memory alignment, the branch predictor, the instruction pipeline, denormals, and SIMD. In this talk, I will give an overview over these properties, using C++ code. I will present a series of code examples, highlighting different effects, and benchmark their performance on different machines with different compilers, sometimes with surprising results. The talk will draw a picture of what every C++ developer needs to know about hardware architecture, provide guidelines on how to write modern C++ code that is cache-friendly, pipeline-friendly, and well-vectorisable, and highlight what to look for when profiling it.

ACCU 2017 Videos Online

The recordings of the recent ACCU conference in Bristol are now online.

ACCU 2017 Conference Channel

by the ACCU conference

About the conference:

All the speaker made the this years conference to one of the most successful ones. Below are the speakers listed with C++ sessions.

Day One with Louis Dionne, Anastasia Kazakova, Roger Orr, Marshall Clow, Frank Birbacher, Timur Doumler, Kevlin Henney

Day Two with Hubert Matthews, Arne Metz, Guy Davidson, Peter Sommerlad, John Lakos

Day Three with Atho Truu, Daniel Garcia, Petr Kudriavtsev, Steven Simpson, Sergei Sadovnikov, Dominic Robinson, Bjorn Fahller

Day Four with Vittorio Romeo, Phil Nash, Niall Douglas, Anthony Williams, Odin Holmes

Herb Sutter's closing keynote about C++ meta classes will be released later.




Using C++ Coroutines with Boost C++ Libraries—Eric Battalio

Working with the future tools.

Using C++ Coroutines with Boost C++ Libraries

by Eric Battalio

From the article:

Last month, Jim Springfield wrote a great article on using C++ Coroutines with Libuv (a multi-platform C library for asynchronous I/O). This month we will look at how to use coroutines with components of Boost C++ libraries, namely boost::future and boost::asio...