Now attending

( 2025-06-19, 23:11)

 "Towards seamless Python package installation on riscv64"

Saturday at 14:00, 35 minutes, H.1309 (Van Rijn), H.1309 (Van Rijn), RISC-V Mark Ryan

Have you ever wondered why certain Python packages fail to install on riscv64 devices? Why, instead of pleasing "Successfully installed" messages, riscv64 users are often presented with bleak screens full of errors? How, in the face of all of these errors, are those users supposed to run Python based AI or data analytic workloads? To the curious who have briefly pondered such things as the package names and errors go scrolling by, this talk is aimed at you! It will explain how Python packages are built and why upstream projects do not provide versions of their packages for riscv64 devices. It will discuss the progress being made in adding riscv64 support to the Python packaging ecosystem. Finally, it will explain how RISE is mitigating the current lamentable situation by building and distributing riscv64 wheels for a select set of popular Python packages.

Coming up:

 "How a City Platform Became a Global Community"

Saturday at 14:35, 25 minutes, UB5.230, UB5.230, Community Carolina Romero Cruz

Picture this: an open source digital democracy platform, launched by a city government, that quickly outgrows its municipal roots and becomes a global movement. Decidim started in 2016 as a tool for participatory processes in Barcelona, but its community expanded worldwide, with users in diverse cultural and political contexts. How do you scale such a project while preserving its democratic integrity?

In this session, we’ll dive into Decidim’s evolution, focusing on the governance challenges and triumphs of managing a rapidly growing, decentralized community. We’ll explore how Metadecidim—our "eat your own dog food" instance—facilitated this transition, enabling collaborative decision-making through open assemblies and processes. We’ll also discuss how Decidim’s unique social contract ensures transparency and accountability in everything from feature development to project governance.

This session is for you if you’re interested in the nuts and bolts of scaling participatory governance of free software projects.

 "How Open-Source Software is Shaping the Future of Healthcare"

Saturday at 14:40, 25 minutes, AW1.126, AW1.126, Open Research Miguel Xochicale

Open-source software has been a powerful catalyst for innovation in computer and software engineering, driving significant advancements in healthcare, particularly in medical and surgical technologies. Recently, the open-source movement has expanded beyond software, encompassing the release of code, data, and AI models, further accelerating progress across diverse fields. However, in healthcare, open-sourcing faces distinct challenges, including navigating regulatory hurdles to meet industry standards, ensuring robust patient data protection, managing the costs of specialised hardware and software maintenance, and addressing the limited availability of expert clinicians needed to annotate, test, and validate AI innovations. In this talk, Miguel will explore how open-source technologies are advancing healthcare, with a focus on medical and surgical innovations. He will highlight key advancements while exploring the complexities of clinical translation, using three of his projects as examples: Fetal Ultrasound Image Synthesis, endoscopy-based video analysis for surgery, and real-time AI diagnosis of eye movement disorders. The talk will examine the challenges of clinical translation and showcase examples of innovative technologies that leverage open-source software, models, and data to address some of the most complex problems in healthcare. Finally, to inspire and spark innovation among the next generation of engineers, researchers, and clinicians from academia and industry, this talk will showcase how the emerging open-source software community for surgical and medical technologies is striving to: (a) Foster Collaboration and Community Building, (b) Enhance Security and Transparency, (c) Promote Customisation and Flexibility, (d) Ensure Cost-Effectiveness, Sustainability, and Scalability, and (e) Drive Rapid Innovation and Future-Proofing.

 "How to quickly build an AI startup on open source RISC-V Cores"

Saturday at 14:40, 35 minutes, H.1309 (Van Rijn), H.1309 (Van Rijn), RISC-V Jeremy Bennett Florian 'Flo' Wohlrab Frédéric Desbiens

AI is everywhere and especially open source is accelerating capabilities and delivering new breakthroughs in Models, making them smaller yet more powerful. While there is a big focus on the next big thing in Software, many overlook the goldrush in Hardware. You may have heard of companies like Nvidia, AMD or Axelera.AI, they are some of the ones selling the shovels to the diggers for a great profit margin. Have you ever wondered what it take to make your own chip?  So how to get started on your AI startup? The good news is: there is RISC-V, an open standard for CPUs, so everyone cam implement their own CPU and use common library software (in theory).  The even better news is there is an non profit open source organization called OpenHW Foundation offering high quality Apache 2.0 (or Solderpad) CPU Cores you can take as is, modify as needed and collaborate with a big community. Even better, the OpenHW Foundation is offering small platforms to debug on FPGA's but also has QEMU support and various other Models for example system Verilog cycle accurate SystemC Models. On top of this we also provide the Software eco system you need to brign your chip up and running quickly and sell it to one of the big Datacenter Companies, or just keep it running in your basement, heating your house and providing awesome AI edge capabilities for you and your family! In this talk Flo will highlight the current trends in chip development and how open source is accelerating this from the Cores to the EDA tools for designing but also open source tapeouts and then focus a little more on some of the Cores in OpenWH and how you can utilize it. Dr Jeremy Bennett world famous for his 45min overviews on "how to get GNU GCC ported on a totally new Architecture" is joining to deliver an overview which Software you need to run on your Chip, to develop your Chip and why it is easy with the OpenHW Group. Last but not least we will spill the beans on how the European Union is supportign our work as a non profit (and also for profits in that context) to guarantee sovereignty and enable academic but also research and industrial to build and innovate on a common platform via the Chips JU and programs like TRISTAN and how you can benefit, no matter if you quickly develop a MCU in your Master, need to do some measurements on real RISC-V Cores for your PhD and prove how to boost performance or if you join the real business selling shovels to all the diggers. Believe us, this talk will be a wild ride deep into the Hardware realm of RISC-V and OpenHW and make you start your own Chip while you are still listening!

 "Optimizing Longhorn for high performance hardware"

Saturday at 14:40, 30 minutes, K.3.401, K.3.401, Software Defined Storage Konstantinos Kampdais

Longhorn is an open-source, Cloud-native volume manager, which implements its own distributed block storage system. It is a complete and independent software defined storage solution, handling internally all aspects related to capacity management, performance, fault-tolerance, as well as interfacing with both Kubernetes and the end user. Longhorn is an actively-developed and mature software, however our installations have revealed that it currently lacks the ability to take advantage of the hardware performance available in local servers that feature high-speed solid state disks and high-bandwidth network connectivity. This presentation investigates a series of performance optimizations that have been engineered in the Longhorn's core that collectively allow the system to achieve an order of magnitude better IOPS and bandwidth.

 "How I optimized zbus by 95%"

Saturday at 14:40, 40 minutes, UB2.252A (Lameere), UB2.252A (Lameere), Rust Zeeshan Ali Khan

This is a story of how I used a few readily-available Open Source tools to achieve huge optimizations in zbus, a pure Rust D-Bus library. This was long journey but gains were worth the efforts. I will go through each single bottleneck found, how it was found and why it was a bottleneck and how it was optimized away.

While attending this talk will by no means make you an expert in optimizations, it is my hope that by you will be able to relate to some of bottlenecks or solutions I will present ("hey", I also do that in my code!") and learn from my experience. Maybe afterwards, you can suggest an even better solution? Moreover, if you don't already have any experience with profiling and optimizations, this talk should be a good introduction for that.

 "Open Source Firmware, BMC and Bootloader devroom - outro"

Saturday at 14:40, 5 minutes, UB4.136, UB4.136, Open Source Firmware, BMC and Bootloader Piotr Król

Closing notes and information about pPub (physical Pub) meetup.

 "How we built a new powerful JSON data type for ClickHouse"

Saturday at 14:45, 30 minutes, UB5.132, UB5.132, Data Analytics Pavel Kruglov

JSON has become the lingua franca for handling semi-structured and unstructured data in modern data systems. Whether it’s in logging and observability scenarios, real-time data streaming, mobile app storage, or machine learning pipelines, JSON’s flexible structure makes it the go-to format for capturing and transmitting data across distributed systems.

At ClickHouse, we’ve long recognized the importance of seamless JSON support. But as simple as JSON seems, leveraging it effectively at scale presents unique challenges. In this talk we will discuss how we built a new powerful JSON data type for ClickHouse with true column-oriented storage, support for dynamically changing data structure and ability to query individual JSON paths really fast.

ClickHouse open-source project: https://github.com/ClickHouse/ClickHouse Links related to the topic: https://github.com/ClickHouse/ClickHouse/issues/54864, https://github.com/ClickHouse/ClickHouse/pull/58047, https://github.com/ClickHouse/ClickHouse/pull/63058, https://github.com/ClickHouse/ClickHouse/pull/66444.

 "LoRaMesher library for LoRa mesh networks"

Saturday at 14:50, 15 minutes, H.2215 (Ferrer), H.2215 (Ferrer), Lightning Talks Felix Freitag Joan Miquel Solé

We present LoRaMesher, a communication library to build LoRa mesh networks. LoRaMesher interconnects geographically spread IoT devices through a LoRa mesh network. For the communication, the library implements a proactive distance vector routing protocol. Using LoRaMesher, an IoT application running on a node can send and receive data packets to and from other nodes in the LoRa mesh network. LoRaMesher has been tested on embedded boards featuring an ESP32 microcontroller and a LoRa radio. Using LoRaMesher, nodes do not connect to a LoRaWAN gateway, but among themselves. This allows new, distributed applications solely built upon tiny IoT nodes.

 "Mainline vs libhybris: Technicalities, down to the buffer"

Saturday at 14:55, 20 minutes, H.2214, H.2214, FOSS on Mobile Devices Alfred Neumayer

This is not on behalf of a specific community, only my direct experience with Ubuntu Touch, libhybris and Halium.

SailfishOS, Ubuntu Touch, Droidian. Many options exist for running a GNU/Linux environment on an off-the-shelf mobile phone. But what makes these different from an application developer’s perspective for a smartphone OS built with libhybris drivers?

Let’s find out.

 "How FreeBSD security audits have improved our security culture"

Saturday at 15:00, 30 minutes, AW1.120, AW1.120, BSD Pierre Pronchery Michael Winser

In this presentation we will review recent security audits of the Bhyve and Capsicum subsystems, lessons learned, how this work was funded, and how it's having a lasting impact on the security culture of FreeBSD.

 "A Free Software App Store for iOS: the App Fair Project's perspective on the DMA"

Saturday at 15:00, 25 minutes, H.1301 (Cornil), H.1301 (Cornil), Legal and Policy Marc Prud'hommeaux

The Digital Markets Act mandates that mobile gatekeepers open their device operating systems to competing app stores. This affects the landscape of app distribution on iOS and Android and has brought about a variety of different compliance efforts, most of which have been found lacking by regulators thus far. The law is important for Free Software, as its obligations grant smaller Free Software projects the rights to demand access to gatekeepers' infrastructure like enabling alternative app store, sideloading and un-installation of software and interoperability with operating systems.

This talk will outline the current state of compliance efforts on the part of Apple and iOS, the primary areas where they are deemed insufficient, and how they effectively block any marketplace from emerging as a viable source of FOSS software distribution for the iPhone and iPad. Financial preconditions, ongoing fees, enforced DRM, centralized notarization app review, and other factors all conspire together to maintain the status quo of monopolistic control over the app marketplace on these devices.

The App Fair Project (appfair.org) is a non-profit charity with the mission of creating an app marketplace for the distribution of digital public goods in the form of free and open-source mobile applications. We have been active in the various workshops and working groups that have examined the DMA compliance efforts on the part of the mobile OS gatekeepers, and have provided technical advice and expertise to groups such as the Free Software Foundation Europe (FSFE) and the NGI TALER project.

 "The status of removing /sys/class/gpio and the global GPIO numberspace from the kernel"

Saturday at 15:00, 25 minutes, H.1302 (Depage), H.1302 (Depage), Embedded, Mobile and Automotive Bartosz Golaszewski

The GPIO sysfs interface for user space has been deprecated for many years. Its alternative, the GPIO character device and the associated libgpiod project, has been available since 2017. The library, along with its numerous bindings, has become the de facto standard tool for interacting with GPIOs from user space. Recently, it was supplemented by a D-Bus API and a reference implementation, addressing the long-standing issue of maintaining GPIO state persistence across different processes.

The sysfs interface is the primary user of the global GPIO number space in the kernel. Unlike other legacy components of the GPIO codebase, we cannot remove it without user space agreeing to stop using it. However, there remains a group of users who, for various reasons, refuse to migrate to the new uAPI. It has become evident that, without providing them with a 100% compatible experience, we will be stuck with the old interface indefinitely.

To address this, the latest addition to the family of user-space GPIO utilities is gpiod-sysfs-proxy[1] - a libfuse-based user-space compatibility layer for the GPIO sysfs interface under /sys/class/gpio, using libgpiod to talk to the kernel.

This talk will cover why we aim to remove /sys/class/gpio (along with the in-kernel legacy APIs), progress made so far, an introduction to gpiod-sysfs-proxy and the libgpiod D-Bus API, and a discussion of future plans.

[1] https://github.com/brgl/gpiod-sysfs-proxy

 "OpenProject: A Review of the Latest Features and Innovations"

Saturday at 15:00, 25 minutes, H.1308 (Rolin), H.1308 (Rolin), Collaboration and Content Management Wieland Lindenthal

Join us for a comprehensive review of the newest features and innovations in OpenProject, developed over the past year. This session will explore key updates, including enhancements to project portfolio management, deeper integration with the openDesk application bundle, and the exciting progress of a mobile app spike. Discover how these developments empower teams to collaborate more effectively, manage projects with greater precision, and streamline workflows. Whether you’re a long-time user or new to OpenProject, this talk will offer valuable insights into how the platform continues to evolve and create value.

 "getaddrinfo sucks, everything else is much worse"

Saturday at 15:00, 25 minutes, H.2213, H.2213, DNS Valentin Gosu

Historically, Firefox has relied on the getaddrinfo API for DNS resolution on most platforms. However, due to inherent limitations — such as the missing Time-To-Live (TTL) information — we sometimes had to resort to alternative APIs like DNSQuery_A on Windows. When implementing DNS over HTTPS (DoH), we developed our own DNS parser, which allowed Firefox to also resolve TXT and HTTPS records. But DoH isn't available to all our users. With HTTPS records becoming increasingly important, we decided to resolve HTTPS queries using system APIs like DNSQuery_A, res_query, res_nquery, and android_res_query, with the expectation that this would cover all supported platforms. This talk will delve into the lessons learned from this journey and explain why these platform specific APIs often fall short of expectations.

 "AT Protocol developer meet and greet"

Saturday at 15:00, 30 minutes, H.3242, H.3242, BOF - Track B Dietrich Ayala

The AT Protocol aka @proto is a protocol designed for decentralized social applications, the inaugural example being Bluesky - a social network application.

If you're developing with @proto or for Bluesky, join to meet others doing the same.

Learn more at:

  • https://atproto.com/
  • https://bsky.app/
  • https://bsky.social/
  • https://atprotocol.dev/
  • https://lexicon.community

You can sign up at https://lu.ma/7a0p68nw to be notified about this and other @proto events around FOSDEM.

 "Welcome to the GCC (GNU Toolchain) devroom"

Saturday at 15:00, 5 minutes, K.3.201, K.3.201, GCC (GNU Toolchain) Jose E. Marchesi Thomas Schwinge Marc Poulhiès

Welcome to the GCC (GNU Toolchain) devroom from the organizers.

 "Engaging the Open-Source Community: Exploring the OpenSIPS Community Edition Projects"

Saturday at 15:00, 10 minutes, K.3.601, K.3.601, Real Time Communications (RTC) Răzvan Crainea

The OpenSIPS Community Editions are the community effort to produce real-life SIP solutions (as platforms) already configured to fulfill precise SIP scenarios. OpenSIPS based solutions – acting as SoftSwitch or SBC – that are ready to use and simple to deploy.

This presentation offers a detailed look at the OpenSIPS Community Edition projects, exploring their capabilities, current status, and development roadmaps. It delves into the innovative ideas driving these projects and emphasizes the critical role of the open-source community in their evolution. To conclude, a brief showcase using Docker Compose will effectively demonstrate the practical utility of the OpenSIPS Community Edition projects.

 "The state of eBPF docs"

Saturday at 15:00, 20 minutes, K.4.201, K.4.201, eBPF Dylan Reimerink

eBPF is a big and complicated topic. For years it was common that the people using and writing eBPF programs were also the people involved in the development of eBPF. Those days are somewhat behind us now, eBPF is more popular than ever, and the number of non-kernel experts wanting to use eBPF is growing rapidly.

A lot of new people means a lot of learning to be done. There is a small but strong community of people to talk to, if you know how to find them. The internet is full of outdated articles that have aged like milk. The kernel has docs for a handful of subjects and man pages that are correct for some kernel versions but not others.

I started the eBPF docs project about two years ago out of frustration for the lack of comprehensive documentation. These docs are now hosted at docs.ebpf.io. Lets take a look at the state of these docs, what it took to get here and where they are going next.

 "Welcome to the Swift ecosystem!"

Saturday at 15:00, 10 minutes, K.4.401, K.4.401, Swift Paris Pittman

Swift isn’t just for Apple platforms; there is something for all in this great open source general purpose programming language.

In this community welcome message, Paris Pittman, a member of the Swift Core Team, will provide an ecosystem overview. We’ll touch on milestones that we’ve achieved together and some of the up and coming work on our plates. And the best part - you can join us in the journey! Paris will detail out how you can plug in, no matter your platform of choice.

 "DMARCaroni: where do DMARC reports go after they are sent?"

Saturday at 15:00, 15 minutes, K.4.601, K.4.601, Modern Email Vint Leenaars

In recent years DMARC has become one of the cornerstones of email deliverability. A large part of email is now protected by the combined efforts of SPF, DKIM and DMARC checks. However, the secret weapons of DMARC which are hardly used are its reports. Along with respecting the policy set by an email sender, the recipient also actively acknowledges how many emails have been sent, from which IP addresses and why some of them have been delivered and others not. This reporting is done by providing a xml file inside a zip attached to an email, which makes it rather hard to digest for humans. Imagine what happens if you get such a report every day for every internet domain you, all of your colleagues and anybody spoofing you send emails to...

Obviously this calls for a tool. Interestingly, even though DMARC is almost a decade old, no good FOSS tool was ever developed. This is why DMARCaroni was created: free and open source software (written in Haskell and Elm) to deliver all your DMARC monitoring needs. In this talk I will unveil this new tool which I wrote in the last 18 months, show off its features, and talk about the roadmap.

 "Devroom welcome"

Saturday at 15:00, 5 minutes, UA2.114 (Baudoux), UA2.114 (Baudoux), Cloud Native Databases Ray Paik Franck Pachot Matthias Crauwels Lori Lorusso

Welcome session for the Cloud Native Databases devroom

 "Federated Blogging with WriteFreely"

Saturday at 15:00, 30 minutes, UA2.118 (Henriot), UA2.118 (Henriot), Social Web Matt Baer

While much of the fediverse has historically focused on microblogging, we've built an open source, federated blogging platform called WriteFreely that enables publishing long-form content to the social web.

In this talk, I'll show how WriteFreely works, and discuss how we integrated ActivityPub into our existing software (written in Go) to give writers a new way to socialize on the open web. I'll share lessons learned from this process, and discuss some ideas for supporting new content forms (like long-form Articles) into the wider fediverse.

 "Welcome to the web performance dev room"

Saturday at 15:00, 5 minutes, UA2.220 (Guillissen), UA2.220 (Guillissen), Web Performance Dave Hunt Peter Hedenskog

A five minute introduction to the dev room.

 "Hardware backed SSH keys: ssh-tpm-agent"

Saturday at 15:00, 30 minutes, UB4.132, UB4.132, Security Morten Linderud

SSH keys are an important part of system administration as they give access to remote systems. While openssh supports the PKCS11 interface, and yubikeys through the sk key types, they introduce challenges such as acquiring additional hardware, or introducing external code into sensitive processes. TPM are widely available hardware devices that allows key creating, signing and encryption operations on a separate hardware, however they do not have native supported by the openssh, and similar projects.

ssh-tpm-agent implements support for TPM wrapped SSH keys through the ssh agent interface. This allows a clear process separation for the keys, while ensuring no new support is required in the openssh project. The agent has support for RSA and ECDSA keys, while also having additional features like host keys, proxy support for additional agents, wrapping of existing keys and import of remotely created keys.

In this talk we will take a look at how the agent works, how the TPM is capable of preventing key extraction, and the other features available in the agent.

 "Welcome to the Microkernel and Component-Based OS Devroom"

Saturday at 15:00, 5 minutes, UB4.136, UB4.136, Microkernel and Component-Based OS Udo Steinberg Alexander van der Grinten

This talk will serve as a welcome and introduction to the Microkernel and Component-Based OS devroom. We will quickly go over the rules and expectations of the devroom, as well as introducing you to the devroom managers and answering general questions.

 "Developing a modern shell and programming language with Go"

Saturday at 15:00, 30 minutes, UD2.120 (Chavanne), UD2.120 (Chavanne), Go Qi Xiao

I will talk about implementing Elvish (https://elv.sh), a modern shell with Go. I will cover the following topics:

  • An introduction to Elvish, including how to integrate it with Go-based tools for real-world scripting use cases
  • How Go makes it easy to implement Elvish, such as pipeline semantics, standard library
  • Testing strategy of Elvish as a case study of testing complex Go projects - Elvish has a test coverage of 92% and increasing, uses both unit tests, end-to-end tests and fuzzing

 "InvokeDynamic in Practice with JRuby"

Saturday at 15:00, 25 minutes, UD2.208 (Decroly), UD2.208 (Decroly), Free Java Charles Nutter

JRuby has been one of the largest consumers of invokeddynamic and method handles since they were introduced in Java 7. With the release of JRuby 10, we have upgraded our minimum Java to 21, and implemented many new optimizations. This talk will survey how JRuby uses invoke dynamic to compile and optimize Ruby code on the JVM.

 "Sandbox IDs with Landlock"

Saturday at 15:00, 30 minutes, UD2.218A, UD2.218A, Containers Mickaël Salaün

Landlock is an unprivileged access control designed to create security sandboxes (i.e. Landlock domains). We are working on observability interfaces to identify the cause of denied requests, which require logging (audit) and a dedicated user space interface to get information about Landlock domains.

In this talk, we'll explain the challenges to tie log entries with running processes and their properties, considering the unprivileged approach of Landlock. This led us to create a new kind of ID to tie processes to Landlock domains. We are now working on a new user space interface to safely get information about these Landlock domains. Thanks to its flexibility, Landlock could be leveraged by container runtimes to better isolate processes and now also to cleanly identify them. We'll talk about the container labels/IDs challenges, how Landlock could help, and the potential limitations.

 "Squashing the Heisenbug with Deterministic Simulation Testing"

Saturday at 15:00, 25 minutes, UD6.215, UD6.215, Testing and Continuous Delivery Dominik Tornow

Modern, distributed systems are complex and present numerous challenges: concurrency, process crashes, message loss, duplication, or reordering.

How can developers confidently test distributed systems instead of continuously dreading the next hard-to-catch and hard-to-reproduce Heisenbug?

Deterministic Simulation Testing is a powerful testing technique that eliminates uncertainty-or rather non-determinism-and ensures that your system is tested exhaustively and every single test is reproducible.

Using a systems modeling approach, we will accurately and concisely discuss Deterministic Simulation Testing. In addition, we will explore real-world implementation of this technique in production in projects such as FoundationDB, TigerBeetle, and Resonate.

Gain actionable insights for crafting your own Deterministic Simulation Testing strategy. Confidently open Schrödinger's Box of testing in distributed systems.

 "Active Tigger: Accelerating Collaborative Text Annotation for Social Sciences and Beyond"

Saturday at 15:05, 15 minutes, AW1.126, AW1.126, Open Research Emilien SCHULTZ

This presentation introduces Active Tigger, an open-source research tool designed to accelerate collaborative text annotation in the social sciences.

The increasing use of text-as-data in social science research has created a pressing need for efficient annotation tools. While small datasets can be manually annotated, the exponential growth in available textual data (e.g., from newspapers and social media) demands solutions that enable collaborative annotation and automation. Moreover, the emergence of generative AI and large language models (LLMs) has highlighted the importance of robust corpus annotation practices, particularly for evaluating prompt-engineered outputs from LLM-as-a-service platforms like OpenAI or Hugging Face.

To address these challenges, we created an annotation platform, Active Tigger. A first version was developed in 2022 using R and RShiny (J. Boelaert, GitLab Repository). This tool embeds several annotation heuristics, including active learning—iteratively predicting and selecting annotations to maximize training quality—to help researchers build training datasets in order to fine-tuning encoder models. The tool quickly became integral to the research team's activities and beyond, which incited us to develop of a second, more robust version.

The current iteration of Active Tigger, built with a Python-based API and a React frontend, introduces enhanced flexibility and scalability. It supports collaborative workflows, accommodates a broader range of use cases, and is now in beta testing, with early adopters exploring its potential.

This presentation will cover three key aspects:

The journey of Active Tigger: From addressing specific social science needs to adapting to the evolving landscape of LLMs. Showcase: Demonstrating the annotation workflow using active learning and BERT fine-tuning. Future directions: Exploring the tool's evolution in the context of widespread LLM availability, discussing the trade-offs between focusing on specialized tasks and enabling broader applications.

Github repository of Active Tigger : https://github.com/emilienschultz/activetigger

 "Pushing the Sega Dreamcast with GCC"

Saturday at 15:05, 30 minutes, K.3.201, K.3.201, GCC (GNU Toolchain) Falco Girgis

GCC is the lifeblood which powers continued development for many legacy and niche processors, such as the Hitachi SH4, found in the Sega Dreamcast. See how far a group of retro game developers, reverse engineers, and language enthusiasts are able to push the console, armed with the latest version of the GNU Toolchain, taking a deep-dive through community-driven ports to the platform, such as Super Mario 64, Sonic Mania, Doom 64, and Grand Theft Auto 3.

 "Building the next generation of Cloud Native Database"

Saturday at 15:05, 30 minutes, UA2.114 (Baudoux), UA2.114 (Baudoux), Cloud Native Databases Sunny Bains

Cloud Native databases architecture has evolved to leverage the elasticity, reliability and scalability available in the cloud. There is a growing trend to leverage object storage systems such as AWS S3 for architecting cost-effective, performant and scalable systems. S3 is a large-scale, high throughput key-value storage system, which it trades for a slightly higher latency. In this session we will present techniques used to leverage S3 for a low latency scalable distributed SQL database, in particular how to get around S3’s high latency by leveraging a novel new LSM Cloud Storage Engine that uses EBS as a cache to lower latency.

 "HelenOS: 20 years of past history, 20 years of future vision"

Saturday at 15:05, 20 minutes, UB4.136, UB4.136, Microkernel and Component-Based OS Martin Decky

The basic foundations of the HelenOS project as we know it today have been laid in late 2004 and early 2005. This 20th anniversary is an opportunity not only for the usual status update talk about the recent developments and near future plans, but also a great opportunity to look at the bigger picture.

While the first 5 years of HelenOS were exploratory and the next 10 years were defined by dynamic expansion on all fronts by more than 80 individual contributors, the last 5 years could be fairly described as maintenance with much less activity.

HelenOS is alive and well, but there are no longer any low-hanging fruits in terms of major subsystems or frameworks missing. There is obviously still a sheer amount of individual hardware devices, file systems, standard APIs and polished features that could be supported or implemented, but that is clearly a less rewarding endeavor for potential contributors than working on the major building blocks like before.

Are there generic lessons to be learned from the story of HelenOS? Is every community-driven non-mainstream OS destined to end up in this "serene valley"? How do we plan to get out of it? The goal of this talk is to discuss these questions.

 "From Side Projects to Sustainable Open Source"

Saturday at 15:05, 25 minutes, UB5.230, UB5.230, Community Orhun Parmaksız

Ever wondered what it's like to maintain open source projects full-time?

In this talk, I'll share my journey from hobbyist to full-time open source maintainer, offering insight into the challenges and rewards of turning passion projects into a career.

Join me as I walk you through my journey, motivation, challenges, and tips for:

  • Building a community around your open source project
  • Increasing visibility and attracting contributors
  • Navigating social media and livestreaming to grow your audience

And more! Along the way, I'll share insights from other maintainers, highlighting what works and what doesn't.

Blood, sweat, and code — it's all here, for the love of open source!

 "All the World's a Stage: running a theatre show on open source software"

Saturday at 15:10, 15 minutes, H.2215 (Ferrer), H.2215 (Ferrer), Lightning Talks Pieter De Praetere

You can run anything on open source software, even a big conference. But have you ever tried running a theatre show with free and open software? Turns out you can. For the last five years, I have been running the technical side of a local theatre company with only free and open source software. Come to my talk to hear how we did it, what software we use(d) (and why), and what kind of bumps we hit.

We use open source software for the entire process, from preparation (writing the script, holding meetings), to ticket sales, our website, seat planning, audio mixing and broadcasting, video broadcasting and programming the lights. No closed source software is used in the process. An added challenge is that neither the theatre group, nor the public, are a technical audience or are aware what open source software is.

If you ever want to assist your local theatre group (do, they really can use technical people who don’t want to be on stage), come and listen!

 "Why Swift is the Next Big Thing for IoT"

Saturday at 15:10, 10 minutes, K.4.401, K.4.401, Swift Lilly Seay

Internet of Things (IoT) connects everyday devices, from sensors to smart home gadgets, with apps that control and monitor them. Building these systems requires programming languages that can work seamlessly across both embedded devices and applications. Swift has been great with C and C++ interoperability, but the introduction of Embedded Swift has brought this to a new level.

With Swift, we can now program embedded systems with low-power sensors and small memory footprints, while also taking advantage of Swift’s simplicity and safety to create interfaces that integrate seamlessly with high-level UI code.

This talk explores why Swift is the next big thing for IoT, demonstrating how it bridges the gap between embedded systems and user-interfacing Swift apps. You’ll learn why Swift’s expressive syntax, interoperability, and cross-platform capabilities simplify development for IoT.

 "OAuth Authentication and Identity Validation in SIP Systems"

Saturday at 15:15, 15 minutes, K.3.601, K.3.601, Real Time Communications (RTC) Jehan Monnier jehan.monnier@belledonne-communication.com

User authentication in real-time communication systems using SIP (Session Initiation Protocol) is evolving with the adoption of OAuth 2.0, as outlined in RFC 8898, published by the IETF in 2020. This protocol secures user access through authentication tokens (instead of traditional methods like Digest). This "Single Sign-On" approach allows for the use of a unified identity verification source across the entire information system, and is now being extended to VoIP. In this conference, we will explore how OAuth 2.0 and OpenID Connect are integrated into a modern SIP environment, with a focus on managing and validating access tokens. To illustrate this, we will use our Flexisip server solution.

Key Topics: - OAuth 2.0 and OpenID Connect: Introduction and benefits for authentication in modern SIP systems. - JWT for Authentication: Token signature validation and extracting user identity. - Integration in Flexisip: Demonstration of OAuth-based authentication with Flexisip, and token validation in a SIP environment. - Authorization Management: Controlling requests based on identity information extracted from access tokens.

This conference will provide an overview of how to implement and secure user authentication with OAuth 2.0 and JWT in a SIP server, using Flexisip as a concrete example.

 "PICO Scholar: Advancing Open Research and Systematic Literature Reviews with an Inclusive Open-Source AI Platform"

Saturday at 15:20, 15 minutes, AW1.126, AW1.126, Open Research Cristina DeLisle Matias Vizcaino

Systematic literature reviews are essential for evidence-based research, but they are often slow and require a lot of effort. Motivated by the potential of Retrieval-Augmented Generation (RAG) technology, our team from Georgia Tech's Master in Computer Science program, with early guidance from researchers at Robert Gordon University, created PICO Scholar. This AI-powered platform helps researchers by turning their queries into embeddings, matching them with a semantic vector database, and pulling out important research details—Population, Intervention, Comparison, Outcome (PICO). It ranks relevant studies and offers a chatbot powered by RAG for exploring documents more deeply. Future updates aim to add features for real-time collaboration, making it easier for teams to work together on reviewing literature.

PICO Scholar uses a solid microservices setup with Red Hat OpenShift AI, boosted by Intel’s OpenVINO toolkit. It runs models like SciBERT for embeddings and TinyLlama for generating text, managed by ModelMesh. LlamaIndex organizes embeddings into a TiDB VectorStore for smarter searches, and fine-tuned adapters improve accuracy for specific fields. MinIO S3 supports smooth model storage, and the platform’s microservice design makes it scalable and resource-efficient.

What makes PICO Scholar stand out is not just its technology but its focus on community and collaboration. Built during two hackathons - including a 2nd place win at the Red Hat & Intel AI Hackathon - with changing team members and diverse skills, the project follows open-source principles, encouraging contributions from all backgrounds. Our goal is to make powerful research tools accessible to everyone, helping researchers worldwide speed up discoveries. By continuing to improve PICO Scholar, we hope to support the scientific community and build a platform that grows and evolves to meet its needs.

PICO Scholar GitHub repository