In the previous two blogs in this series I showed how solving an apparently simple problem about loading a lot of data into RAM using mmap() also turned out to require a solution that improved CPU use across cores. In this blog, I’ll show how we dealt with the bottleneck problems that ensued, and finally, […]
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In Part 1 of this series we solved the problem of using mmap() to load large set of data into RAM all at once. The catch was that it still took too long. In this blog, I describe how we solve this.
We got a call from a bioinformatics group at a European university. The problem appeared simple, how to usemmap() to load a large data set into RAM all at once. OK, no problem I thought...
CppCon is the annual, week-long face-to-face gathering for the entire C++ community – the biggest C++ event in the world. This year, for the first time, CppCon takes place in the stunning Gaylord Rockies Hotel and Convention Center in Aurora, Colorado, very near Denver International Airport. KDAB is a Bronze sponsor this year, and Milian Wolff is […]
ACCU is the foremost annual conference in the UK for people interested in C++ and C, and runs from Wednesday the 10th to Saturday 13th April at the Bristol Marriott City Centre Hotel, with pre-conference tutorials on April 9th. Keynote Speakers on the 10th and 13th are Angela Sasse, Herb Sutter, Paul Grenyer and Kate […]
Today’s complex applications can soak up megabytes, a memory management strategy is crucial for RAM intensive applications like image/video processing, massive databases, and machine learning.
Intro Last Monday and Tuesday a few brave souls from both the Qt Company and KDAB gathered together in the KDAB Berlin office premises to work on the CMake build system for building Qt. There was Mikhail, Liang, Tobias, Kai, Simon (QtCompany) as well as Jean-Michaël, Albert, Volker and me (KDAB) sitting together in a […]
Clazy 1.5 is now available. This is a small release, mainly focused on bug fixing. Clazy is a clang compiler plugin which emits warnings related to Qt best practices. We’ll be showing Clazy at Embedded World, Nuremberg, Febr 26-28, where we are a main Qt partner. You can read more about it in our previous […]
KDAB at Embedded World, Nuremberg In February 2019, KDAB will once again be the main Qt partner at the Qt Booth, Hall 4-258, at Embedded World, in Nuremberg, Germany. This is the biggest Embedded conference in Europe and, in 2018, hosted over 1000 exhibitors and over 32000 visitors. Get your free pass here using Code: B401904 This year KDAB […]
Question: How do you cast a function pointer to a void*? (You’re trustworthy and wouldn’t dare to do anything evil with it, right?) Answer: Maybe your first thought was, well reinterpret_cast<void*>(&f) of course. That was mine, at least. Well, it turns out, C++ wants to support architectures, where data and instruction pointers are physically distinct […]