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FOSDEM 2019

Free and Open source Software Developers' European Meeting (FOSDEM) is a non-commercial, volunteer-organized European event centered on free and open-source software development.


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FOSDEM 2019
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by Zeeshan Ali At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/media_gstreamer_rust.webm GStreamer is a popular framework of choice for multimedia programming in the Linux world, especially for embedded. Since efficiency is a typical core requirement for embedded solutions, traditionally C/C++ have been the languages of choice for writing GStreamer applications and plugins. Unfortunately, this efficiency comes at the price of safety. Even the most skilled C/C++ developers make mistakes...
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FOSDEM 2019
by FOSDEM
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by Aurélien Aptel At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.119/extend_emacs_2019.webm Starting with GNU Emacs 25, your favorite editor can now load and execute shared objects at runtime. That means you can extend Emacs by writing C code for example. This talk will briefly present the history and controversies about binary modules in the GNU world, cover the basics of the module API and show you how to write a simple module. Room: UD2.119 Scheduled start: 2019-02-03 15:55:00+01 Source:...
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FOSDEM 2019
by FOSDEM
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by Ross Lagerwall At: FOSDEM 2019 https://video.fosdem.org/2019/H.2213/vai_implementing_uefi_variable_services_in_qemu.webm UEFI is a replacement for the BIOS. It supports Secure Boot which is signature verification of bootloaders and OS kernels which helps prevent attacks where malware injects itself into the bootloader or kernel so that it can be loaded during startup. Despite the poor reputation that Secure Boot has in the free software community (mostly due to non-technical reasons), this...
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FOSDEM 2019
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by Richard Brown At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.401/opensuse_kubic.webm As the world moves more and more towards containerised solutions, a number of real questions start to appear. - What is the perfect platform for running containers atop? - How to use this platform as part of a flexible, scalable, highly available infrastructure fabric? - How to minimize the maintenance and administration of this platform at scale? All of these problems are well answered in an enterprise...
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FOSDEM 2019
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by Mario Behling At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/eventyay_event_system.webm Eventyay is built based on the experiences and lesson learned from organizers of FOSSASIA Summit after a several years searching for suitable solution. This is a update on the current development of eventyay, the tech stack and feature set. (Please note that it was originally advertised that Hong Phuc Dang would be giving this talk.) Room: H.2215 (Ferrer) Scheduled start: 2019-02-02 16:00:00+01...
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FOSDEM 2019
by FOSDEM
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by Paul Boven At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/sdr_dwingeloo.webm The Dwingeloo radio telescope is a historic instrument in the Netherlands. At its opening in 1956, the 25m dish was the largest fully steerable radio telescope in the world. These days it is run by a group of volunteers, who have restored and rejuvenated the instrument. It is used for radio astronomy and amateur radio, but also for outreach and art projects, to name a few of our activities. We perform...
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FOSDEM 2019
by FOSDEM
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by Paul Masurel At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/deepdive_tantivy.webm Tantivy is a search engine library, akin to Lucene but for Rust. In this talk, we will walk through the building blocks that make a scalable full-text search engine. While this talk will be centered on tantivy, most of the concepts introduced should apply to other inverted-list search engines like Lucene. Room: K.3.201 Scheduled start: 2019-02-03 12:30:00+01 Source:...
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How and why (not) to use the 127.0.0.53 nameserver, systemd-resolved and resolvctl Or what is systemd-resolved and how it is integrated on Ubuntu by Dimitri John Ledkov At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.601/dns_systemd_resolved.webm Resolved is a local, caching, DNS nameserver resolver and is used by default on Ubuntu. This talk's goals is to de-mystify how it works and what it does by default on Ubuntu, and how one can further configure it to either not get in the way, or do...
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FOSDEM 2019
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by Atish Patra At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.126/riscvsbi.webm Supervisor Binary Interface (SBI) is one of the most fundamental interfaces in RISC-V eco-system. It allows the operating system to interact with the supervisor execution environment (SEE). The SEE always runs in higher privileged mode than the supervisor OS. It can be a simple bootloader in low-end hardware platform, a hypervisor-provided virtual machine in a high-end server, or simply machine mode software in...
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Retroshare JSON API Making libRetroshare a generic service for decentralized and private communication by Gioacchino Mazzurco At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.218A/retroshare_json.webm RetroShare is a platform that allows users to create a fully decentralized network with a high level of security, privacy and confidentiality. It offers a unique combination of features (File transfer, publishing channels, forums, distributed chat, asynchronous email,...) that provide users lots...
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FOSDEM 2019
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by Christian Thalinger At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/performance_graal.webm Running Twitter services on Graal has been very successful and saved Twitter a lot of money on datacenter cost. But we would like to run more efficient to reduce cost even more. I mean, who doesn’t? In order to do this we are using our Machine Learning framework called Autotune to tune Graal inlining parameters. This talk will show how much performance improvement we got by autotuning Graal....
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FOSDEM 2019
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by Nicolas Frankel At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/securing_jvm.webm Consider a Java application in a private banking system. A new network administrator is hired, and while going around, he notices that the app is making network calls to an unknown external endpoint. After some investigation, it’s found that this app has been sending for years confidential data to a competitor (or a state, or hackers, whatever). This is awkward. Especially since it could have been...
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FOSDEM 2019
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by Fabien Chouteau At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.126/riscvadaspark.webm In this talk I want to open a window into the wonderful world of "alternative" programming languages for RISC-V. What can you get by looking beyond C/C++. So I will start with a quick introduction to the Ada and SPARK languages, the benefits, the hurdles. I will also present an overview of the applications and domains where they shine, when failure is not an option. I will then do a short...
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FOSDEM 2019
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by Marcin Mirecki At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.114/containers_k8s_cni.webm The CNI specification describes a generic plugin-based networking solution for application containers on Linux. It allows to create easily plugable network plugins for container management system (such as for example Kubernetes). The session will show how easy it is to create a CNI from scratch, plug it into Kubernetes, and spawn a container connected to the network by this CNI. Room: UA2.114...
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FOSDEM 2019
by FOSDEM
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by Sambhav Kothari and Diego Ceccarelli At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/learning_to_rank.webm Internet search has evolved from its early days. It has become smarter and more natural, and people expect it to “just work.” But, anyone who has worked behind-the-scenes with a search engine knows exactly how hard it is to get the “right” results to show up at the right time. Not to mention, what happens when the trends change, when your users’ favorite weirdly-shaped...
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High end augmented reality using Javascript Using markers with a webcam is cool but what about a HoloLens or MagicLeap straight from the browser? by Fabien Benetou (Utopiah) At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/machine_learning_javascript.webm VR is so 2018. Now is time for AR... or is it? In this talk we will explore practically what is feasible today and how. We'll rely on Exokit for the new Magic Leap ML1 after briefly exploring what is AR, what it's good for then some...
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FOSDEM 2019
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by Ludovic Courtès At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.201/gnuguixminimalism.webm GNU Guix is a package manager and GNU/Linux distribution that builds on Scheme, a Lisp dialect known for its emphasis on minimalism. This talk will be an exploration of Guix’ use of Scheme’s extensibility to build high-level abstractions and user interfaces in a broad sense. GNU Guix is a package manager, GNU/Linux distribution, and more generally a “software deployment toolbox” featuring...
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FOSDEM 2019
by FOSDEM
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by Nikolai Kondrashov At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/microcontroller_firmware_from_scratch.webm Follow a journey of writing STM32 microcontroller firmware from scratch, using open-source tools. Follow Nikolay Kondrashov's journey of learning to write firmware for an STM32 microcontroller (the Blue Pill one) from scratch, using only open-source tools. From blinking LEDs, to controlling a toy car, without the complicated, and license-restricted manufacturer's libraries, or...
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Mobile design with device-to-device networks Exploring the design space of novel technologies through research, design, prototyping and storytelling by Felipe Erias At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/device_to_device_networks.webm This talk outlines a strategy for designing interactions that take advantage of novel technologies by combining research, design, prototyping and storytelling. Current and future network standards (e.g Neighbour Awareness Networking) will allow...
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Quantum Computing at Google and in the Cloud An update on Google's quantum computing program and its open source tools. by Kevin D. Kissell At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/google_qc.webm Google is a world leader in technology and a major contributor to a number of open source efforts. Google's quantum hardware and algorithms teams have achieved a number of quantum computing "firsts". This talk will present the Google quantum computing architecture, an update on...
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Next Generation Internet initiative - Year Zero Come work for the internet on privacy, trust, search & discovery by Michiel Leenaars At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/nextgen_internet.webm Last year during a FOSDEM keynote Michiel Leenaars, director of strategy at NLnet foundation, introduced the Next Generation Internet initiative together with member of the European parliament Marietje Schaake. NGI aims to be the first concerted effort to put significant public funding...
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FOSDEM 2019
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by Dele Olajide At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/pade.webm Pàdé (the "p" is pronounced explosively) is a new unified communications solution from the Ignite Real-time community that is built by integrating the SIP and HTTP protocols with XMPP and is focused at the enterprise desktop for small and medium sized businesses. It is implemented client-side as a web browser extension and server-side as a collection of supporting plugins that run inside the Openfire XMPP...
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FOSDEM 2019
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by Arek Hiler At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/igt_tools.webm IGT recently underwent quite a few changes. The name is now vendor-agnostic, meson is the new default build system, we are on the GitLab, and the new runner, a piglit replacement, has landed. So what's up with the name change from "Intel GPU Tools" to "IGT GPU Tools"? Is it just GNU, with its sweet recursiveness, being that inspiring or do we really belive that having a vendor agnostic test...
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FOSDEM 2019
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by Wim Bonthuis At: FOSDEM 2019 https://video.fosdem.org/2019/UB2.252A/use_configmanagement.webm After discovering Foreman Ansible Modules I've set up an Ansible Playbook to set up and configure Foreman and Katello. Once its up and running, it allows you to boot PXE machines, or image based using Packer and Gitlab. The lab is deployed on my laptop and showcases the following technologies: lifecycle management (create/update/delete machines) content management...
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Asterisk WebRTC frontier: make client SIP Phone with sipML5 and Janus Gateway Analyzing a real project on production (www.nethvoice.it) we will look at two different implementations of a SIP Phone WebRTC of NethCTI Web App. We will see great code examples, WebRTC technologies and a real demo of an audio/video call by Alessandro Polidori At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/webrtc_sip_phone.webm We will analyze the steps to make audio & video communications (as SIP Phone...
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FOSDEM 2019
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by Merlijn B. W. Wajer At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/maemo_leste_mobile.webm Maemo Leste is community a Debian/Devuan based GNU/Linux distribution for smartphones and tablets aimed at free software hackers. In spirit and look it is similar to the Maemo Fremantle OS for the famous Nokia N900 phone. This talk will present the current (alpha) state of Maemo Leste, the presently supported devices, our development setups, the present and upcoming challenges and lay out the...
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A microkernel written in Rust: Porting the UNIX-like Redox OS to Armv8 A case study of Rust as a language for writing microkernel based compositions by Robin Randhawa At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/microkernel_written_in_rust.webm This talk is about my experiences porting the Rust language based Redox OS stack to the Arm v8 architecture. The talk uses this theme to discuss the general importance of microkernel architecture in safety critical domains, the trends I've seen...
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FOSDEM 2019
by FOSDEM
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by Bryan Boreham At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/gogc.webm The Go runtime has a garbage collector (GC) which is famously simple and lacking in tuning parameters compared to, say, a JVM. However there are controls, and in this talk we shall look at what they do and when you might use them. We will also look at how to understand what GC is doing and how much that work might be costing your program. Primarily we will look at the GOGC environment variable, and how it can be...
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FOSDEM 2019
by FOSDEM
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by Stéphane Delcroix At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/dotnet_xaml_to_il.webm Some years ago we started to compile some bits of the Xamarin.Forms Xaml directly into IL. It’s now fully turned on into our templates, and on par with the runtime Xaml loader. In this short talk you’ll learn about the story that got us there, about some of the internal cooking of Xamarin.Forms, and what our plans are for that Xaml compiler. Room: K.3.201 Scheduled start: 2019-02-02...
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FOSDEM 2019
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by Vsevolod Stakhov At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.401/rspamd_integration_freebsd.webm After years using SpamAssassin on FreeBSD.org, we have moved towards Rspamd last year to improve spam filtering and integrate it as milter to postfix. With this step we could impressively drop spam rate and increased performance comparing to SpamAssassin. In this presentation, we plan to describe the current architecture of the email system and how Rspamd fits into it. Then we will describe...
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by Olivier Hallot At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.119/toolthedocs.webm LibreOffice has currently an large set of help pages which are hard to maintain and to edit. On the other hand the XML language used was designed for a broader purpose and is not used in its full capacity. The lecture presents simplifications of the help XML and the design of specific XML objects to describe the user interface and to connect the help pages closer to the dialogs of the application. Software...
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FOSDEM 2019
by FOSDEM
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by Philipp Krenn At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.218A/scale_auditing.webm The Linux Audit daemon is responsible for writing audit records to the disk, which you can then access with ausearch and aureport. However, it turned out that parsing and centralizing these records is not as easy as you would hope. Elastic's new Auditbeat fixes this by keeping the original configuration, but ships them to a centralized location where you can easily visualize all events. You can also use...
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FOSDEM 2019
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by Mikayla Hutchinson At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/dotnet_wasm_toolchain.webm Using WebAssembly, Mono can now run your C# and F# code in the web browser. You'll learn about Mono's WebAssembly backend and the AOT and interpreter engines that power it, and see its modern dotnet SDK based toolchain in action. Room: K.3.201 Scheduled start: 2019-02-02 10:30:00+01 Source: https://www.youtube.com/watch?v=Kp5YkpYdVZ4 Uploader: FOSDEM
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FOSDEM 2019
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by Santiago Saavedra and Konark Modi At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.218A/web_extensions_exposing_privacy_leaks.webm Internet has become an integral part of our lives and everything we do online leaves a trail of data. This data is being collected, analyzed, sold and aggregated to cast profiles about us by companies across the globe. In the physical world, if a stranger was to follow you everywhere you go, keep a log of who you talk to and meet with, read your mails and then...
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FOSDEM 2019
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by Uwe Schindler At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/apache_lucene_solr_8.webm Spring 2019 will be the time for a new major release of Apache Lucene and the well-known search server Apache Solr. Since Lucene 7 a lot new features have been developed, mainly a new way to short circuit query execution if the total number of hits is not needed. This may improve query execution for common full text search use cases enormously. The talk will also present other new features and...
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FOSDEM 2019
by FOSDEM
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by Alan Woodward At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/super_speedy_scoring_lucene.webm Lucene 8 will have some remarkable speed-ups when it comes to querying across large datasets. In this talk I will describe how this has been implemented, from new data structures through to changes in the scoring API, and the trade-offs required to make them possible. Lightning overview of the structure of an inverted index, showing how current queries are executed and documents scored...
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FOSDEM 2019
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by Windel Bouwman and Shing Lyu At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.208/rust_python.webm Rust is a relatively new programming language aimed as a safe competitor of C. There are already attempts to write extension modules in rust and load them into CPython. A whole new approach would be to re-implement the Python language in rust. This is what RustPython is about. RustPython is a relatively new project. The aim of the project is to create a Python interpreter written entirely in...
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FOSDEM 2019
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by Kaushal Madappa At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/gluster_container_storage.webm Gluster Container Storage (GCS) is a new initiative from the Gluster community. It integrates several different old and new Gluster projects, building on top of the experience gained from the Heketi and gluster-kubernetes projects, and aims to provide the best persistent storage solution for containers. Gluster Container Storage (GCS) is a new initiative from the Gluster community, that aims...
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FOSDEM 2019
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by Arne Babenhauserheide At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.201/experiencewithwisp.webm Experience with wisp: 5 years with fewer parens What changed, what evolved, best practices, usage for a lecture, and why wisp aka SRFI-119 is completed as a language (though not in tooling or documentation). Room: K.4.201 Scheduled start: 2019-02-02 14:25:00+01 Source: https://www.youtube.com/watch?v=cI1sltJMVuM Uploader: FOSDEM
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FOSDEM 2019
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by Matthias Endler At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.208/rust_cargo_inspect.webm This is an hands-on talk, showing a journey from code with a lot of syntactic sugar to plain, veeery explicit Rust code. Rust allows for a lot of syntactic sugar, that makes it a pleasure to write. It is sometimes hard, however, to look behind the curtain and see what the compiler is really doing with our code. "It is good to know what these conveniences are, to avoid being mystified by what's...
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FOSDEM 2019
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by Quentin Monnet At: FOSDEM 2019 https://video.fosdem.org/2019/H.2214/network_filtering_with_bpf.webm At the core of fast network packet processing lies the ability to filter packets, or in other words, to apply a set of rules on packets, usually consisting of a pattern to match (L2 to L4 source and destination addresses and ports, protocols, etc.) and corresponding actions (redirect to a given queue, or drop the packet, etc.). Over the years, several filtering frameworks have been added to...
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FOSDEM 2019
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by Erik Faye-Lund At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/zink.webm For the last 25 years or so, OpenGL has been the only major cross-platform 3D graphics API out there. But in the last couple of years this has changed, and it's looking more and more like Vulkan will take over the throne. This means that we currently need two graphics drivers for each GPU, one per API. But it's not like the available workforce for opensource drivers all of a sudden doubled, so this leaves us with...
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FOSDEM 2019
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by Andre Przywara At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/one_image_to_rule_them_all.webm Bootable images for single board computers (SBCs) are currently tailored for a specific board - even boards sharing the same SoC have to use separate image files. This either causes several almost identical images being provided or only very few boards being supported. The talk will present a single image designed to boot various ARM64 based SBCs, including boards from different SoC vendors,...
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by Masafumi Ohta At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/hardware_raspberrypi.webm Raspberry Pi is now 6 years old, there are several tips and use cases.it was born for kids programming education, though, it is now also used for electric DIY hobbies, industrial use, Edge Computing, IoT and more. Masafumi will talk Raspberry Pi history and latest updates and discuss several its use cases and tips for our business and daily use. Raspberry Pi histories, tips and use case What is...
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FOSDEM 2019
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by Ben Poor At: FOSDEM 2019 https://video.fosdem.org/2019/H.1309/media_radio.webm https://tech.ebu.ch/news/2018/09/voice-controlled-hybrid-radio-demonstrated-at-2018-ibc The EBU and NAB co-funded a project to create a demonstrator for a radio device able to be entirely controlled by voice. This demonstrates the concept of the 'Single Voice Service List', and uses openly-standardized metadata from the broadcaster (using RadioDNS lookup, ETSI 103 270, and the Service and Programme Information...
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Decoding Meteor-M2: QPSK, Viterbi, Reed Solomon and JPEG from IQ coefficients to images, analysis of digital weather satellite transmissions by Jean-Michel Friedt At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/sdr_meteorm2n.webm A low cost, digital video broadcast-terrestrial (DVB-T) receiver is used to collect radiofrequency signals emitted from the low Earth orbiting Russian satellite Meteor-M2. The QPSK encoded signal is analyzed all the way from extracting bit values, to recovering...
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FOSDEM 2019
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by José Manuel Ortega At: FOSDEM 2019 https://video.fosdem.org/2019/H.1308/testing_nodejs_security.webm NodeJS is one of the fastest growing platforms nowdays and from a security point of view is necessary to know all posibilities that the platform offers to developers.This is a talk that explains some of the most common problems in NodeJS applications and how using frequently used tools it is possible to exploit such vulnerabilities.Also I will show what are the main vulnerabilities we can...
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FOSDEM 2019
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by Martin Sustrik At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/structured_concurrency.webm We've got rid of GOTO and the spaghetti code it leads to in 1970's. However, we are encoutering very much the same problems when writing concurrent code even now, 50 years later. Programmers are still stuck deep in the callback hell or state machine hell. Concurrent code still looks like spaghetti. And while Go language provided a tool to write unspaghettified concurrent code to the masses, by no...
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FOSDEM 2019
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by René Cannaò At: FOSDEM 2019 https://video.fosdem.org/2019/H.1301/multiplexing_proxysql.webm Handling tens of thousands of database connections poses seriously performance issues on any database system because resources are poorly utilized. ProxySQL, a MySQL protocol aware, reverse proxy for database servers using the MySQL protocol, is able to track connections statuses and utilize very few connections to MySQL server to serve traffic from thousands of client connections. This session will...
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FOSDEM 2019
by FOSDEM
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by Brian Goetz At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/java_language_futures.webm With the new more rapid cadence, improvements are coming to Java faster than ever. Join Java Language Architect Brian Goetz on a whirlwind tour of some of the features that are coming to Java in the coming months and years. Room: H.1302 (Depage) Scheduled start: 2019-02-02 17:50:00+01 Source: https://www.youtube.com/watch?v=XaWzAMkU-Hs Uploader: FOSDEM
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FOSDEM 2019
by FOSDEM
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by At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/golightning.webm The last pard of the day will be dedicated to lightning talks. Come watch great short talks, or come present yours! The last hour of the day will be dedicated to lightning talks. Come watch great short talks, or come present yours! We will be accepting lightning talk proposals till a few hours till the lightning talks start happening! CfP is open till Saturday 16:00 at http://bit.ly/golight2019 Room: UD2.120 (Chavanne)...
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by Ruslan Bilovol At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/linux_and_usb_audio_class_3.webm The USB Audio Class 3.0 is a specification recently introduced by USB Implementers Forum. Ruslan is an author of UAC3 implementation in Linux, he will give an overview of improvements and changes in this USB Audio spec, and will share current Linux support status and challenges faced during ALSA drivers implementation. Room: K.4.401 Scheduled start: 2019-02-03 11:30:00+01 Source:...
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by Alexander Condello At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.121/dwave_sdk.webm D-Wave's Ocean software tools are an open source ecosystem for solving customer-scale problems on the quantum computer. The D-Wave System solves a particular problem - the Binary Quadratic Model (also known as the QUBO or Ising problem). We will provide an overview of the open source tools that are used to express your problem as a BQM and to convert that BQM into something that can be solved by the...
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by Lewis Revill At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.201/llvm_apollo.webm Nearly 50 years ago on the 20th of July 1969 humans set foot on the moon for the first time. Among the many extraordinary engineering feats that made this possible was the Apollo Guidance Computer, an innovative processor for its time with an instruction set that was thought up well before the advent of C. So 50 years later, why not implement support for it in a modern compiler such as LLVM? This talk will...
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by Igor Chubin At: FOSDEM 2019 https://video.fosdem.org/2019/H.2215/console_services.webm The talk is devoted to console oriented services, like: wttr.in, cheat.sh, rate.sx. Which popular console oriented services exist currently and how can they be used in everyday life; what advantages and disadvantages do they have; how services like that could be created. I've created several console oriented services, that you are probaly aware of, if you are a vivid console user. If you've never heard...
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by Patrick Franken At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/fritzing.webm Making electronics accessible to the broad public was mainly made possible by Arduino, the Raspberry PI and last but not least Fritzing. Back in 2009 it was a pain to get from a loose wiring on a breadboard to a PCB. Fritzing came up first with a unique breadboard view and a simple to use PCB layout. Fast forward 10 years Fritzing is still widely used by over 200.000 users but struggles to find a sustainable...
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by Lorna Mitchell At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/python_markup_to_pdf.webm Python is brilliant at many things, but did you know it could also create beautiful documents from simple markup? Discover rst2pdf in this session. Introducing: rst2pdf. This open source python project enables you to write simple, text-based markup and generate beautiful PDF documents with a single command. Using text-based content makes collaboration simple as source control tools can be used; it...
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by Paul Chaignon At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.201/llvm_bpf_rewriting.webm The bcc project [1], mostly known for its collection of Linux tracing tools, is a framework to ease the development of BPF programs for Linux. Indeed, in its recent releases, the Linux kernel can be extended with small BPF bytecode programs whose memory and fault safety is statically verified at load time. These programs are usually written in a subset of C and compiled to the BPF bytecode. To access...
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by Derek Parker At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/delvehandson.webm Hands on Go debugging with Delve. Less slides, more substance: this talk will be focused on live demos that the audience is invited to participate in. Come learn advanced debugging techniques and the intricacies of the Delve debugger. In this talk I will present several demos, all of which will be available online. Each demo will target a specific use case of Delve. The goal is for audience members to walk...
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FOSDEM 2019
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by Felix Becker At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/typescript_advanced_tooling.webm Tooling has always been a focus for TypeScript and a large reason for its success. TypeScript code intelligence is available across many editors and even web-based tools, all provided by the same service TypeScript ships out-of-the-box with the compiler itself. This presentation gives a tour and history of how TypeScript is able to provide the same great experience to many different clients...
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by Dávid Halász At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.120/component_based_design_system.webm How do you bring order to this chaotic web frontend climate fueled by the ever-changing technologies driving it? We - a UX Designer and a Software Engineer - will introduce you to the concept of WebComponents, and how we can achieve order through evolving from Bootstrap to CSS grid based design system. Target Audience: designers and engineers. our talk introduces the importance of...
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Condition Monitoring & Transfer Learning Good predictions in situations with (initially) almost no data by Daniel Germanus and Felix Bert At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.118/condition_monitoring.webm Predictive maintenance and condition monitoring for remote heavy machinery are compelling endeavors to reduce maintenance cost and increase availability. Beneficial factors for such endeavors include the degree of interconnectedness, availability of low cost sensors, and...
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by Till Maas and Edward Haas At: FOSDEM 2019 https://video.fosdem.org/2019/UB2.252A/declare_linux_network_state.webm NMState is a new declarative API that simplifies Linux network management. Various services built on top of Linux need to manage the network configuration. Each service models network entities differently and uses various APIs to change the network state, multiplying the required work. NMState centralizes the challenges by providing a unified declarative representation of the...
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by Wayne Stambaugh At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/kicad.webm A state-of-the-union talk by KiCad's project leader. Room: AW1.125 Scheduled start: 2019-02-03 12:30:00+01 Source: https://www.youtube.com/watch?v=y-fFgsXtgcU Uploader: FOSDEM
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FOSDEM 2019
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by Richard Esplin At: FOSDEM 2019 https://video.fosdem.org/2019/H.1302/ledger_identity.webm Our technological society wants digital identities, but previous attempts undermine the user's right to control their personal information. With the advent of distributed ledgers, it is finally possible to have a digital identity that preserves the best aspects of our offline systems of identification, while also providing significant improvements. This talk will describe the challenges in creating a...
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by Leon Anavi At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.601/ohw_rpi.webm Raspberry Pi, the most popular single board computer for hobbyists and students, is an affordable and widely used platform for retrogaming. Over the years the community has created numerous cool cases, add-on boards and peripherals for optimized gaming. In this presentation you will learn how to use cutting edge free and open source technologies such as KiCAD and OpenSCAD to create a gamepad as a Raspberry Pi HAT...
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by Magnus Hagander At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.220/whats_new_in_postgresql_11.webm PostgreSQL 11 is out! Do you know what your favorite feature is yet? This talk will outline some of the bigger new features in this new version of PostgreSQL, giving you a chance to pick your favorite feature -- or to change your mind if you already had one! PostgreSQL 11 is out! Do you know what your favorite feature is yet? This talk will outline some of the bigger new features in this new...
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by Tor Lillqvist At: FOSDEM 2019 https://video.fosdem.org/2019/UA2.114/collabora_office_on_ios.webm After several years of only occasional progress but mostly stagnation, resources have now been available for work on a LibreOffice-based app for iOS. This talk will describe the history and technical aspects of the effort. Collabora Office for iOS is based on the C++ server-side code for Collabora Online (based on LibreOffice Online), and JavaScript code for the same (browser-side). Plus the core...
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by Hong Phuc At: FOSDEM 2019 https://video.fosdem.org/2019/K.1.105/susi_ai.webm This talk is about SUSI.AI - an open source conversational framework developed by FOSSASIA developer community. We will talk about current development of the project including the overview of SUSI’s technology stack and the recent released hardware prototype. The motivation behind the project was to create an ecosystem made up of conversational web services, AI technologies, search engines, smart devices and open...
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by Han Lee At: FOSDEM 2019 https://video.fosdem.org/2019/K.3.201/dotnet_intel_intrinsics_netcore.webm In this presentation, we will talk about the Intel Hardware Intrinsics in .NET Core, a new feature in .NET Core 3.0. For the first time, .NET developers will have the ability to directly exercise underlying CPU features, very similar to what C/C++ developers could do with intrinsic functions for their performance critical code. The Intel Hardware Intrinsics in .NET Core include more than 1300...
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by Stephane Carrez At: FOSDEM 2019 https://video.fosdem.org/2019/AW1.125/ada_database.webm The presentation describes how Ada Database Objects helps in connecting to an SQLite/MySQL/PostgreSQL database from Ada. It explains how by mapping SQL tables in Ada records, it simplifies saving and updating database records and makes the application more safe and reliable. The presentation will briefly describe the Ada code generator (Dynamo) that is behind this. Room: AW1.125 Scheduled start:...
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FOSDEM 2019
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by Joris Geessels At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/python_extending_numba.webm Over the years the Numba project has proven itself to be a pragmatic and effective tool to accelerate numerical computations significantly. Numba however puts some restrictions on the code that can be accelerated. These restrictions can force you to compromise, making your code less readable or more difficult to integrate with the rest of your code. This tradeoff makes Numba less attractive. In...
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by Liz Frost At: FOSDEM 2019 https://video.fosdem.org/2019/UD2.120/gco.webm Go is, for all its C-esque syntax, is a relatively high-level language. There’s garbage collection, a type hierarchy, and even advanced concurrency primitives. Sometimes, though, you need access to lower-level control. Whether for performance, interoperability, or just for fun, the Cgo API is here to help! I will explain what it is, how to use it, and perhaps most importantly, when to avoid it. A lot of Go programmers...
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FOSDEM 2019
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by Edward Lewis At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.601/dns_testing_1000_gtld_edns0.webm In advance of open source DNS developers "DNS Flag Day", ISC's EDNS0 tester is applied across 1200+ zones. In preparing so many delegations across so many zones, a lot of interesting comments can be made regarding how zones, name servers and addresses are mixed, as well as the results of the original goal, testing EDNS0 protocol deployment. Room: K.4.601 Scheduled start: 2019-02-03...
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Porting U-Boot to a Modular Device Booting Linux via U-Boot on a board which can be composed of several different modules by Marek Behún At: FOSDEM 2019 https://video.fosdem.org/2019/K.4.401/porting_u_boot_to_a_modular_device.webm Currently, Das U-Boot and Linux use device tree to specify how the different hardware components are connected to each other on a board. If a board has a way via which the user can plug in another hardware component, unless we are talking about universal buses like...
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