v3dv: Experience using gfxreconstruct/apitrace traces for performance evaluation
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In addition to increasing the feature range and stability, the v3d/v3dv team has been continuously working on improving the performance of both drivers. One of the tools used to check if a change would provide a performance gain/penalty, were to run several gfxreconstruc/apitrace traces, with and without such change, and compare the outcome of both runs. This presentation will summarize our experience with this approach, and their pros and cons. (c) X.Org Developer's Conference (XDC) 2023 October 17-19, 2023 A Coruña (Spain) https://indico.freedesktop.org/event/4/
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![v3dv checkpoints
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[Aug 20] Minimal Vulkan 1.0 feature set
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[Nov 20] Vulkan 1.0 conformant
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[Nov 20] Started to test on real world apps
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[Dec 20] Started to work on performance
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[Dec 21] Vulkan 1.1 conformant
●
[Jul 22] Vulkan 1.2 conformant](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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developers to harness the power of the Web Platform to build their
applications. However, Web Browsers are not the only type of applications that
can be built with Web Engines, which can also be used to develop other types of
applications using the same Web-based technologies, but for a different type of
use cases other than "browsing the Web".
These use cases can cover a wide range of situations outside of the traditional
desktop or mobile environments, such as the ones embedded systems are usually
used for (e.g. set-top-boxes, smart home appliances, GPS navigation devices, or
in-car/in-flight infotainment systems, to name a few). And in those situations
it is very common to be running on boards with SoCs and a particular set of HW
capabilities that make it crucial for the Web Engine to be able to tightly
integrate with them.
In this session we will focus on how WPE, a fully Open Source port of the
WebKit Web engine for Linux-based embedded devices, can be used to adapt to the
different challenges that embedded devices pose to develop end-user
applications, using the power of the Web Platform underneath.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aNTr/building-end-user-applications-on-embedded-devices-with-wpe-mario-sanchez-prada-igalia
Raspberry Pi 5: Challenges and Solutions in Bringing up an OpenGL/Vulkan Driv...
The Raspberry Pi 5 was announced on October 2023. This new version of the
popular embedded device comes with a new iteration of Broadcom’s VideoCore GPU
platform, and was released with a fully open source driver stack, developed by
Igalia. The presentation will discuss some of the major changes required to
support this new Video Core iteration, the challenges we faced in the process
and the solutions we provided in order to deliver conformant OpenGL ES and
Vulkan drivers. The talk will also cover the next steps for the open source
Raspberry Pi 5 graphics stack.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aBEx
Automated Testing for Web-based Systems on Embedded Devices
Every day, embedded devices are becoming more powerful and capable of running
more elaborate applications. Among these applications are Web-based ones,
enabling to leverage features from the Web APIs to the embedded context, either
through a generic browser running a traditional Web application or through a
customized Web engine tightly integrated within the system.
But such capabilities usually bring new challenges, like testing user
interactions with the application using the embedded device's specific I/O
methods, such as gestures, or inspecting Web application internals with
JavaScript. In this context, using a browser automation framework such as
WebDriver, which is a W3C standard supported by WebKit Web engine, allows
testing Web-based applications on such devices as if the user were actually
using it, alongside running custom JS code.
In this session, we will cover why we need browser automation for testing on
certain types of embedded devices, with a focus on WebDriver as the proposed
tool to achieve that goal. We will also discuss WebDriver's main features and
limitations, as well as other possible approaches and frameworks that could be
considered for this kind of task.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aeSx/automated-testing-for-web-based-systems-on-embedded-devices-lauro-moura-igalia
Embedding WPE WebKit - from Bring-up to Maintenance
Embedded devices have become powerful enough to run Web content a decade ago,
and any modern SoC that can run Linux and includes a GPU is a potential
candidate to hide a Web engine under the surface. How did it made it there?
Does it only show Web content? What else can it do? The talk will cover
bring-up tips to build and get WPE WebKit working on your custom embedded
device and make your own simple Web browser, as well as the best practices for
keeping the system up to date. No less important is integration with the rest
of the system: this session will detail the possibilities that WebKit brings to
the table, including how to add new JavaScript APIs which call into native code
to provide tight, performant access to platform functionality.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aBFQ/embedding-wpe-webkit-from-bring-up-to-maintenance-adrian-perez-de-castro-igalia
Optimizing Scheduler for Linux Gaming.pdf
This talk dives into how the scheduler impacts your gameplay on Linux and
unveils our journey to smoother gameplay. How does task scheduling impact Linux
gaming? Suboptimal task scheduling can cause stuttering while playing games on
the Steam Deck game console. First, we nail down the enemy. What exactly is
"stuttering," and how can we measure its impact on your gameplay? Next, we
extensively analyzed the characteristics of game tasks from the scheduler’s
point of view. Characterizing task behavior in Linux gaming helps to understand
why some schedulers create much stuttering and others create less and to unveil
the secrets behind smooth vs. choppy performance. Lastly, we will share our
progress on the optimized scheduler for reducing the stuttering problems in
Linux gaming, especially Steam Deck. We implemented the scheduling policy based
on sched_ext, a BPF-based extensible scheduling framework.
(c) Open Source Summit North America 2024
April 16-18, 2024
Seatle, Washington (US)
https://events.linuxfoundation.org/open-source-summit-north-america/
https://ossna2024.sched.com/event/1aBOT/optimizing-scheduler-for-linux-gaming-changwoo-min-igalia
Running JS via WASM faster with JIT
So, we are adding a backend for the SpiderMonkey’s codegen to enable JIT
support for JavaScript running through Wasm. Sounds a bit cryptic so let’s
divide it into parts.
SpiderMonkey is a JavaScript engine which is used for running JavaScript inside
the Firefox browser. SpiderMonkey is written in C++ and supports compilation
into the Wasm module, see live demo -
https://mozilla-spidermonkey.github.io/sm-wasi-demo/. However, SpiderMonkey
compiled into the Wasm module supports execution of JavaScript only in the
interpreter-only mode and it doesn’t support just-in-time compilation because
there is no Wasm backend for that. There are backends for Arm, X86, X64 etc but
there is none for Wasm.
Why do we want to add support for JIT? Well, because we want speed. Right now
there is no solution to run JS scripts via Wasm fast, there are only
interpreters.
Why does JIT improve performance?
The reasons are the same for why an interpreter is slower than a compiler -
because it eliminates the interpreter loop, uses a more efficient ABI and, more
importantly, it can specialize polymorphic operations in JavaScript. So, we not
only enable the JIT tier in SpiderMonkey for Wasm but we also provide support
for inline caches.
Inline caches is a mechanism for specializing the behavior of particular
operations like plus or a call to specific arguments provided at runtime.
With all that we can generate Wasm modules on the fly, instantiate them, and
link them to provide from ~2x to ~11x speedup over the interpreter. In the
talks we will cover how the whole scheme works with SpiderMonkey: 1. How to
link modules on the fly into SpiderMonkey.wasm 2. How to add an exotic Wasm
backend into SpiderMonkey’s supported backend line - X64, X86, Arm, Wasm 3. How
to use the whole solution in the cloud instead of QuickJS 4. How to get a
speedup of your JS over wasm with test data.
Wasm I/O 2024
14 - 15 Mar, 2024
Barcelona
https://2024.wasmio.tech/
To crash or not to crash: if you do, at least recover fast!
What could be possibly worse that an almost unbeatable boss in
a game or a tough maze that consume hours of gameplay with not
much progress? How about a Linux kernel crash that makes you
lose all the game progress with no apparent reason or feedback?
Though rare, it is a real possibility that would make gamers
quite annoyed, given that Linux is used more and more as a
platform for playing games.
Some technologies are available to collect logs and feedback
the user in case such disastrous events happen, mostly related
with kernel crashes handling mechanisms. The main ones available
are kdump and pstore, but still there are work to be done in
this area...
In this talk we're going to present the basics about kernel
crash handling, like how a kernel panic might happen, how to
deal with that (with an overall discussion about kdump and
pstore techs) and the kdumpst tool, developed specially to
deal with this situation on Steam Deck (and generically on
Arch Linux); also we're gonna discuss some missing
pieces / ideas to make it even less likely gamers need to
complain that their device just got hang for no reason!
FOSForums 2023
Aug 26 - Aug 27, 2023
Institute of Computing, State University of Campinas (Unicamp)
Campinas, São Paulo, Brazil
https://www.fosforums.org/
Implementing a Vulkan Video Encoder From Mesa to GStreamer
(c) Vulkanised 2024
The 6th Vulkan Conference
Sunnyvale, CA. USA
Feb 5-7, 2024
https://vulkan.org/events/vulkanised-2024
8 Years of Open Drivers, including the State of Vulkan in Mesa
(c) Vulkanised 2024
The 6th Vulkan Conference
Sunnyvale, CA. USA
Feb 5-7, 2024
https://vulkan.org/events/vulkanised-2024
Introducción a Mesa. Caso específico dos dispositivos Raspberry Pi por Igalia
Nesta charla impartida por Alejandro Piñeiro de Igalia, darase unha introdución
a Mesa, librería open-source para o desenvolvemento de drivers gráficos.
Explicarase a súa historia, os seus compoñentes máis importantes, que
utilidades proporcionan aos desenvolvedores e unha lista de hardware ás que dan
soporte. Finalmente explicarase o caso concreto do soporte proporcionado para
as GPUs dos dispositivos da serie Raspberry Pi, centrándonos nas Raspberry Pi 4
e Raspberry Pi 5
Igalia é unha empresa galega, con sede na Coruña, especializada en servizos de
consultoría, e que desenvolve solucións innovadoras de código aberto para un
gran conxunto de plataformas de software e hardware. En Igalia traballan nas
áreas máis interesantes do software de código aberto, incluídos navegadores,
gráficos e multimedia.
Igalia desenvolveu os controladores OpenGL ES 3.1 e Vulkan 1.2 conformes para a
GPU VideoCore VII Broadcom que se fornece coa nova Raspberry Pi 5.
Alejandro Piñeiro é enxeñeiro de Software e socio en Igalia, é desenvolvedor de
Software Libre desde 2004. A súa experiencia inclúe unha variedade de proxectos
de GNOME e freedesktop.org, enfocándose desde 2015 en Mesa, especificamente os
drivers Intel e Broadcom. É un dos responsables do desenvolvemento do
controlador Broadcom Vulkan para Raspberry Pi 4 & 5.
Máis información en https://aindustriosa.org/Mesa/
Esta actividade está patrocinada pola Xunta de Galicia e pola Axencia Para a
Modernización Tecnolóxica (AMTEGA).
(c) A Industriosa
https://aindustriosa.org
28 de Outubro (Vigo)
2023 in Chimera Linux
Chimera Linux is a novel Linux distribution built around FreeBSD core tools and
the LLVM toolchain. Since its initial launch in 2021, it has made a lot of
progress and is now in alpha stage. The system can be deployed on a wide array
of hardware and many people are using it as their desktop system; it works on
x86_64, AArch64, POWER (little and big endian) as well as RISC-V and by now
comes with thousands of packages.
While trying to be practical, Chimera is also highly hardened, partly thanks to
the LLVM toolchain, rendering it immune to various security issues other
distros are vulnerable to. It has transparent and robust infrastructure,
ensuring smooth deployment of packages. We are also developing various new
tooling that the whole ecosystem can benefit from, including the Turnstile
session tracker. Service management is based around Dinit, a modern,
supervising system; we maintain and create a variety of tooling around it,
trying to break the existing status quo with systemd, while abandoning legacy
approaches.
2023 has seen several major milestones, so I will focus on these, while also
giving a short overview so that people unfamiliar with the system don't feel
lost. I will also explain how our work benefits the entire Linux ecosystem, as
well as beyond.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2524-2023-in-chimera-linux/
Building a Linux distro with LLVM
For the last 3 years, I've been building a complete Linux distribution, Chimera
Linux (https://chimera-linux.org) using solely LLVM as its system toolchain -
that means Clang, compiler-rt, and libc++, alongside its other tooling. Right
now, it is a complete desktop system that is already used by many, with a
familiar GNOME interface and thousands of packages, targeting 5 CPU
architectures. In this talk I would like to focus on my experiences using the
toolchain, what obstacles got in the way, how I dealt with them, the issues
that are still left and I would like to see addressed, the many benefits using
LLVM gave the project, and overall give the audience an insight into practical
deployment of LLVM in a project where it isn't simply a drop-in alternative to
GCC.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2555-building-a-linux-distro-with-llvm/
turnip: Update on Open Source Vulkan Driver for Adreno GPUs
Turnip changed a lot since the last status update. You could now run AAA
desktop games via FEX + Turnip, Adreno 7xx is now supported, Turnip is used by
emulators on Android, and more!
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2033-turnip-update-on-open-source-vulkan-driver-for-adreno-gpus/
Graphics stack updates for Raspberry Pi devices
This talk will show the efforts done in the Open-Source graphics stack for
supporting Raspberry Pi devices. Although the talk will focus on the recently
launched new Raspberry Pi 5, we will show the improvements done for previous
generations of the Raspberry Pi hardware.
Raspberry Pi 5 has available FLOSS GPU drivers on product launch, exposing
OpenGL-ES 3.1 and Vulkan 1.2. We'll go through the changes needed to enable
desktop OpenGL 3.1 on RPi4/5.
We will also review the changes done to the kernel driver to expose the RPi5
capabilities and the new GPU stats support for RPi4/5.
Finally, we will show the work done to use Wayfire as the default Wayland
compositor on the Raspberry Pi OS.
- https://www.mesa3d.org/
- https://www.raspberrypi.com/
- https://wayfire.org/
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2841-graphics-stack-updates-for-raspberry-pi-devices/
Delegated Compositing - Utilizing Wayland Protocols for Chromium on ChromeOS
This talk will cover our experience in utilizing Wayland subsurfaces and
implementing delegated compositing for Chromium on ChromeOS. Several concepts
will be covered - from overlay making decision in Chromium/Viz to design and
implementation of custom Wayland protocols, which were required to pass frame
data as overlays via Wayland and reconstruct that frame on the Wayland server
side.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-3177-delegated-compositing-utilizing-wayland-protocols-for-chromium-on-chromeos/
MessageFormat: The future of i18n on the web
Internationalization in JavaScript and on the web platform is very complicated,
but also vastly important for us developers in order to build accessible and
intelligible interfaces. Thankfully, Unicode Consortium's MessageFormat working
group and TC39 have been hard at work standardizing the next generation of i18n
tooling that aims to unify analogous non-standard tools in use today while
approaching this problem from a fresh perspective.
Join me along this tour of i18n in JavaScript, discover some of the newest
additions to the toolkit and learn about the ongoing MessageFormat proposal and
how it aims to radically improve the developer experience.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2832-messageformat-the-future-of-i18n-on-the-web/
Replacing the geometry pipeline with mesh shaders
This talk will discuss the problems with the traditional vertex processing
pipeline and present how mesh shading solves these problems. Instead of
processing a fixed set of input vertices, mesh shaders can create an arbitrary
topology of vertices and primitives. Mesh shading also includes a new solution
for geometry amplification: task shaders.
The talk should be scheduled before Timur's talk about implementing mesh
shaders in the RADV Mesa driver.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
I'm not an AMD expert, but...
Let's talk about developing AMD display drivers in the DRM subsystem as an
external contributor. Part of this work is a trail of breadcrumbs to build
documentation. What are those breadcrumbs? How do they help to review, fix,
improve and enable features of AMD drivers? How would both sides benefit if
those pieces of information were already documented? We are gathering
information from anywhere and also bothering experts for input. Ultimately,
this presentation focuses on AMD driver development but may fit DRM drivers of
any GPU vendors.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
Status of Vulkan on Raspberry
There has been a lot of activity in V3DV, the Vulkan driver for Raspberry Pi 4,
over the last year: we have significantly reworked our synchronization code,
obtained Vulkan 1.1 conformance, implemented Vulkan 1.2 support, continued to
work on compiler optimizations and more.
In this talk I would like to go through the main development milestones and
changes we implemented in the driver as well as discussing some limitations of
the underlying hardware platform that have discouraged us from implementing
features such as scalar block layout or fp16.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
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“Building and Scaling AI Applications with the Nx AI Manager,” a Presentation...
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For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
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Consult the full report at https://www.oecd.org/digital/oecd-artificial-intelligence-review-of-germany-609808d6-en.htm
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v3dv: Experience using gfxreconstruct/apitrace traces for performance evaluation
- 1. v3dv: experience using gfxreconstruct/apitrace traces for performance evaluation Alejandro Piñeiro Iglesias <apinheiro@igalia.com>
- 2. v3dv checkpoints ● [Aug 20] Minimal Vulkan 1.0 feature set ● [Nov 20] Vulkan 1.0 conformant ● [Nov 20] Started to test on real world apps ● [Dec 20] Started to work on performance ● [Dec 21] Vulkan 1.1 conformant ● [Jul 22] Vulkan 1.2 conformant
- 3. Performance work ● Driven initially by native Unreal Engine 4 samples – Generally GPU limited – Very expensive shading ● Focus on backend shader code optimizations – OpenGL/ES driver also benefited
- 4. Performance work – UE4 samples
- 5. Performance work ● Process: – Capture generated shader code – Identify non optimal code traces – Figure out how that code is generated – Design & Implement optimizations – Verify results: ● shader-db + GFXReconstruct/apitrace + manual testing
- 7. ● Two main uses: – Visual checking for artifacts – Performance comparison based on final FPS ● Automatized through an script – Run all traces from a directory – Can pass a list of mesa commits for comparisons – Several additional parameters GFXReconstruct/apitrace
- 8. Pros ● Visual checking easier – CI already includes checking for a small amount of frames, but not enough – More practical that needing to fake play games ● FPS easy to understand, gave clear values on the early stages of performance work
- 9. Cons ● FPS unreliable, already known as a flawed performance metric ● Right now each hypothetical performance improvement has a small individual impact – At this moment it is used as a sanity check
- 10. Contact ● IRC: #videocore@OFTC ● Mailing list: mesa-devel@freedesktop.org ● Gitlab: https://gitlab.freedesktop.org/mesa/mesa ● Blogs: https://blogs.igalia.com/itoral https://blogs.igalia.com/apinheiro
- 11. Q&A We are hiring: www.igalia.com/jobs