Gnome multi gpu

From xorgs perspective, everything runs correctly.

GPU Passthrough

Post your. What happens if you don't use dbus-run-session? That starts a distinct, and generally unnecessary DBUS and thus gnome will be cut off from the system's user bus. Atom topic feed. Arch Linux. Index Rules Search Register Login. You are not logged in. Topics: Active Unanswered. Org X Server 1. Org Video Driver: Org XInput driver : Org Server Extension : Org Foundation" [ Org Server Extension, version Org Video Driver [ Org Server Extension [ When the [ For [ Org XInput Driver [ Org XInput driver, version Multi-headmulti-screenmulti-display or multi-monitor represent a setup when multiple display devices are attached to a computer.

This article provides general description of multiple multi-head setup methods, and provides some examples of configuration. It was developed in at MIT. After about 35 years of development, tweaking and adding of new features and ideas, it is generally acknowledged to be a bit of a beast. It should be remembered that the common configuration at the time of development was a single running X providing individual views to Xterminals in a time-sharing system.

Nowadays the standard is X providing a single screen on a desktop or laptop. All of this means that there are many ways of achieving the same thing and many slightly different things that can meet the same purpose.

In modern X versions sometimes you can get away with limited or no configuration. In the last few years, the boast is that X is self-configuring. Certainly, the best practice rule of thumb is less configuration is better - that is only configure what is wrong. This is the original way of configuring multiple monitors with X, and it has been around for decades.

Each physical monitor is assigned as an X screen, and while you can move the mouse between them, they are more or less independent. The first screen is With this configuration, it is not possible to move windows between screens, apart from a few special programs like GIMP and Emacs which have multi-screen support.

Alternatively, if you have a terminal on each screen launching programs will inherit the DISPLAY value and appear on the same screen they were launched on.

But moving an application between screens involves closing it and reopening it again on the other screen. Working this way does have certain advantages, such as windows popping up on one screen won't steal the focus away from you if you are working on another screen - each screen is quite independent.

In most cases, it can fully replace the old Xinerama setup. See an explanation why RandR is better than Xinerama. RandR can be configured for the current session via the xrandr tool, arandr or persistently via an xorg. This article or section is a candidate for moving to xrandr. Sometimes problems arise from running the arandr script too soon after login. The factual accuracy of this article or section is disputed. You may arrange your screens either relatively to each other using the --right-of--left-of--above--below optionsor by absolute coordinates using the --pos option; note that in this case you usually need to know resolutions of your monitors.

See xrandr 1 for details. Some frequently used settings are described below. Since randr version 1. This is an updated version of what was possible with Xinerama and works with open source drivers and does not require an Xorg restart.

Some desktop environments do not support this feature yet. Openbox has been tested and works with this feature. Monitor order in this command does not matter and the monitors need to be rearranged correctly after or before this command is executed.

For a more detailed explanation see this page. This is similar to using xrandrseparate Monitor section is needed for each screen.With this in mind, it has not been crucial to allow low latency input handling and drawing, as when low latency and high performance throughput has mattered, the X server has been the one responsible. For example, input goes directly from the X server to the X clients, and when high performance is really important e.

For visual feedback that also relies on low latency, the X server has also been completely responsible, namely pointer cursor movement. With Wayland, this landscape has changed drastically. There is also the issue with certain features that in the past has relied on X11 that should not continue to do so, for example input methods.

Problem areas To sum it up, there are a number of problem areas that needs new solutions. It would use the Wayland backend both in the X session and the Wayland session, and the X server would not be involved with the shell UI in any way. The UI process could also be implemented in a way that it can be restarted. What is left is mostly positioning related logic, and related animations.

GNOME Shell 4

Libmutter would need to be adapted to support low latency, and doing so would be done by splitting up different parts into different threads. It'd have an API where users would request changes that should be applied on the next flip. Input thread The input thread would directly process input from libinput, and under normal circumstances have the ability to request hardware cursor updates directly to the KMS thread.

gnome multi gpu

It should also be able to forward input events directly to Wayland clients by directly talking to the Wayland thread. Wayland thread When possible, for example when no update that happens on the primary plane is scheduled and a clients buffer should be directly scan-out-able onto a CRTC, the Wayland thread should be able to directly request the KMS thread to update the new content.

gnome multi gpu

Main compositing thread A main thread would handle compositing of the primary plane, as well as handle window management and everything related to that. It is assumed that the compositing thread may occasionally stall due to various reasons, such as GPU synchronization. A major reason for splitting up various things into different threads is to simply be able bypass the compositing thread to avoid these stalls.

Extensions All extensions would have to be rewritten, probably from scratch, as the architecture would change dramatically.

gnome multi gpu

This, however, means we'd have the ability limit what extensions can do in the compositor process for stability reasonsand reconsider whether monkey patching or well defined extension points is the way forward. It would probably be a good idea to be wary about introducing extensions in a garbage collected language in the compositor process however, but only allowing compiled compositor side extensions might be very problematic. Implementation Some things such as the introduction multiple compositor side threads can be done early without much external impact.

On the other hand, the parts specific to the shell UI and UX is hard to implement without breaking extensions. Either one move piece by piece of the UI out of the compositor process into a new UI process, but each piece moved would break extensions interacting with that particular piece. Thus, there are three options: Work completely on a separate branch until ready, "Move" piece by piece while keeping the existing piece intact and the new piece turned off by default Enter a period of constant breakage and move piece by piece while breaking more and more extensions every release All three has both pros and cons.

Option B Another option, while potentially being less drastic, but one that would only solve out of 5 of the listed problem areas, is to introduce a proxy display server. A proxy display server would be somewhat similar to an X server, as in, it would be the Wayland server clients talk to, and it would be the process interacting with KMS and libinput, but GNOME Shell would instead be compositing frames handing it over to the proxy display server instead of directly to KMS.

Especially with the improvements for app development in recent years. Hosted by Red Hat.Join us now! Forgot Your Password? Forgot your Username? Haven't received registration validation E-mail? User Control Panel Log out.

gnome multi gpu

Forums Posts Latest Posts. View More. Recent Blog Posts. Recent Photos. View More Photo Galleries. Unread PMs. Essentials Only Full Version. FTW Member. This guide will go through the process of building a new Folding Home rig.

Part 1: Selecting the right components. The ti excels in the Points per Watt arena while the has nearly the same performance ratio but at a lower cost. The second component for success, and the most complicated one to get right, is the motherboard. Here the key thing you must have is pcie 3.

The last critical part needed is the Power Supply. As to how large of a power supply you need if you are going the route you will only need W. A Case to put it all in is recommended as this way parts are less prone to accidental damage when compared to an open bench approach, kinda costly but so is dead hardware. Once all is said and done you should have a PC that you can remote into from anywhere, even your phone for free, with only a power cord connected to it.

As of now i have yet to figure out how to automatically OC the GPU's at startup but i assume it can be done simply with another file just like with the fans, just need to put time into figuring that one out.

Awesome start Chris, Thanks for taking the time to post. Looking forward to the Part 2. Much appreciated. Great post Chris!This is all in Ubuntu I will say on ryzen system its a lot smoother than previous version of gnome 3 and evenly smoother kde and mate.

I notice my system is snappy without problem drivers are up to date for my amd gpu and my other system is a lot better too as well. This is great to see. It was great to see the work put into Gnome 3. And, if what kind of time frame would that entail?

However, at the moment there are no newer performance fixes that have landed in 3. I do expect and hope that 3. Same here, great work made on 3. Performance still tanks though on multimonitor setups, janky animations and whatnot. I know work is ongoing on alleviating these issues, but how close to completion is it I wonder?

There is a lot of performance work in progress, and planned. In fact I will be in a hurry to get it all into Ubuntu As significant milestones are met, they will be announced on this site.

Most likely in the weekly desktop status reports. If you want to track the long term progress then you can follow these pages: [ stutter latency CPU ]. Superb, this is great to hear.

Thank you. GNOME 3. However I would like to clarify a few thingsā€¦ 3. Significantly reduced CPU impact for cursor movement. High performance multi-monitor support in Wayland sessions Fixes for other problems identified as stutter and high CPU usage. Rodhos April 20,pm 3. Nice job! Thank you very much. I can notice the difference. Great release. The cursor movement patch is the one that I would love to see soon. Wishful thinking, perhaps. Great work thus far though. We are already backporting performance fixes to stable Ubuntu releases as those fixes mature.

Gnome 3.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Ask Ubuntu is a question and answer site for Ubuntu users and developers.

It only takes a minute to sign up. Screens order in GDM is also wrong. Looks like a bug to me. If you'd like to see it corrected I would suggest that you mark on the official report that this bug affects you. There is one more workaround: Link to article. So the author created a script which basically does something like this:. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Asked 5 years, 11 months ago.

Active 4 years, 5 months ago. Viewed 49k times. Does anybody have an idea? I have the same problem. I use the Nvidia Driver and no matter what Tool I use, the Display order always changes after a restart.

So it Using a xorg. I have the same issue as well with a fresh clean install. Apparently a reported bug, bugs. How are the screens not in order? Active Oldest Votes. I have the same issue seems like gnome-settings-daemon is not loading monitors. Works great! Thanks for this workaround. I hope they will find the root cause since GDM has also the same problem. It still doesn't save the monitor setup for me, but it solves some other display problems. I need to explicitly add r restartthough, to the end of pkill -9 -f gnome-settings-daemon.

This creates another problem in my case, makes the first desktop unusable like it doesn't refresh and keeps shadows of closed windows in itany other options? I know yesterday there was a new LTS version released, but since this is a problem for two years at least i'm amazed at no bug-fix in part of ubuntu devs Zlatko Zlatko 4 4 silver badges 10 10 bronze badges. The Overflow Blog.

Podcast Cryptocurrency-Based Life Forms. Q2 Community Roadmap. Featured on Meta. Community and Moderator guidelines for escalating issues via new responseā€¦. Feedback on Q2 Community Roadmap.While the desktop Linux experience has been improving by leaps and bounds, there are still some edge cases that need to be worked out, including systems with multiple graphics cards. The more tricky case is when the GPUs are not the same and may even differ by chipset or brand.

Though this is not as commonly found, any Linux desktop user with such a setup will tell you the struggles of utilizing all of their hardware, and how the desktop experience is less than ideal. Large data centres, supercomputers, workstations etc. Whether display devices monitors are connected to separate graphics cards, or a rendering task is being offloaded to a separate chip, situations where they effectively have to interact to render output to a user becomes a challenge.

The core for the difficulty on Linux comes down to a single issue: old standards. This protocol was officially released in yes, over 30 years before writing this articleand has for the most part remained the same. The core principals of this standard are to provide a solid foundation for what would be needed to generate graphical interfaces for users, while allowing developers the ability to add extra functionality where needed.

Although this concept is one of the strengths of the protocol, it has with time become one of its biggest weaknesses. As X11 is only a protocol, there have been dozens of implementations of this since its release. Of these, the most popular used today is X. The reason advancements were even needed is due to the aging of the standard.

Some key functionality defined by X11, such as fonts, are no longer required of a windowing system these days this is left to a separate window manager. This is the main challenge when working with powerful and widespread standards: they become hard to replace.

Both SLI and Crossfire have seen their share of usage, and there were means of utilizing them with X.

A Gentle Introduction to Multi GPU and Multi Node Distributed Training

Org though how well is a matter of debate. These use-cases however were, in a general sense, fairly simple. The hardware was identical, the drivers equally so, and the places where they could be applied were fairly restricted.

In our current generation, the situation has greatly changed. Crossfire is dead, and SLI is being phased out, since modern GPUs can generally perform sufficiently to only require a single card. In their place, a more complex challenge has emerged: hybrid graphics.

GNOME 3.32 Released

Unlike SLI and Crossfire, these were not strictly designed to improve graphics performance when playing demanding games. Instead, the focus was to improve and reduce the overall power consumption of the device, seeing as it is intended to be portable. One of the disadvantages of discrete GPUs is their higher power consumption.

Since many modern CPUs have built-in integrated graphics chips, which perform admirably and with much reduced power usage, the goal was to utilize both types within the same device, and dynamically select the appropriate GPU for any given task. Word processing? The hybrid approach allows the device to conserve power for general use-cases, while allowing good performance in beefier applications, such as 3D games.

These dynamic capabilities, while convenient, hit the Linux community hard. The original methods allowing users to run displays across separate GPUs was simple: separate X. Org sessions. By starting X. Unless the goal was to keep the work handled by each device separate, this method is generally not ideal.

Synergy for keyboard and mouse sharing, it does not allow the desktop experience users would come to expect. One of the first mainstream solutions to work around these issues is the Bumblebee Project. This was designed specifically around Nvidia Optimus technology, and was intended to fill the gap left by missing features on the existing system.

"The Compensator" Build Log - Our most insane build ever!

This allowed users with Hybrid Nvidia graphics to have their GPU dynamically enabled and disabled for power consumptionand offload rendering tasks through the usage of VirtualGL. Org configuration files to get working correctly, it has and still does served as a functional choice.