Questions tagged [gpu]
Use for questions about the Broadcom VideoCore IV Graphics Processing Unit included in all Raspberry Pis.
19
questions
77
votes
3answers
146k views
What is the optimum split of main versus GPU memory?
I read that it's possible to allocate either 128MB, 64MB or 32MB to the Raspberry Pi's video memory.
Given that my primary use case for this machine is educational: I will be running lightweight ...
106
votes
5answers
28k views
Can I use the GPU for calculations?
Is it possible to use the GPU for calculations? (e.g. CUDA/OpenCL)
26
votes
7answers
167k views
Get CPU and GPU usage on Raspberry Pi
I am trying to figure out a good split for the CPU/GPU. Is there a way to monitor the CPU and GPU usage to see where I should make the split?
14
votes
2answers
24k views
VLC Hardware acceleration
I'm new to Raspberry Pi. I am trying to develop a media player that would use a library like libvlc to do the decoding. Now the problem is that I can't get the hardware acceleration going...
I have ...
44
votes
6answers
16k views
Is there a GPU accelerated Xorg server?
At present all of the official builds of the X Window System run on the CPU, which takes up a lot of processing power and runs X rather slowly.
I know there's no official GPU accelerated version of ...
16
votes
1answer
8k views
Running 1080p video from within XOrg smoothly
The 1080p examples that work outside of X.Org run very smoothly on my Pi, but within X.Org they don't run very smoothly at all at the moment.
Given that X.Org is currently not GPU-accelerated, this ...
32
votes
3answers
38k views
What speed can I expect from the hardware-H264-encoding?
I stumbled over the Wikipedia-article that the Broadcom GPU has hardware support for encoding H.264/AVC, not only de-coding.
I also found an article where someone gave an example using ffmpeg to ...
15
votes
8answers
54k views
Connect a GPU into Raspberry pi
I want to connect a GPU GT640 to a Raspberry pi model B. I know there is not a direct connection and the tranfer data are very differents but. Is there any chance to connect this devices in order to ...
18
votes
3answers
1k views
Is it possible to mine Bitcoins?
Obviously, the RPi can be used to mine Bitcoins on the CPU, but this would be very slow.
Is it possible to use the GPU to mine Bitcoins?
2
votes
1answer
703 views
What's the smallest amount of memory that can be allocated to GPU?
According to http://elinux.org/RPiconfig#Memory , the minimum that can be specified in /boot/config.txt is 16MB. Is there a way to shut off video completely and allocate nothing?
I'm asking about ...
13
votes
6answers
68k views
Raspberry pi 2 1024M Increase Gpu Memory to 512 at least
I have a Raspberry B and a Raspberry 2.
In the B model, I set the config file to gpu_mem_512=256 in order to get more memory for the graphics. It works fine. If I type the command vcgencmd get_mem ...
24
votes
3answers
20k views
How can I change the RAM split?
By default, the Pi is set to a 192MiB:64MiB RAM:VRAM split. As I will not be using the Pi for graphical purposes, I would like to change the split to allocate more normal RAM to ease swap usage.
5
votes
2answers
2k views
Voice recognition
I was thinking about creating a kind of Jarvis computer (Iron man). Only then a (little) bit more minimalistic. What I want to built is more of a question/answer type of application (something like ...
4
votes
1answer
6k views
How to: build a graphics cluster
Currently, I am waiting for my second RPi to arrive and then I will begin my fun building a RPi cluster. Also, later I want to extend it more and more. =)
I am building it at home, home-experiment, ...
10
votes
3answers
14k views
WebGL does not work properly on Raspberry Pi Chromium Browser
I have a problem with WebGL on Raspberry Pi 3's Chromium browser. I did the settings required but nothing happened.
Here is my information
Device : Raspberry Pi 3
OS : Linux raspberrypi 4.9.80-v7+ #...
3
votes
2answers
2k views
eglGetDisplay() fails on RaspBerry 3
When called on a PI3, eglGetDisplay(EGM_DEFAULT_DISPLAY) stops the program (tried with some test programs like hello_triangle2) and displays this message:
* failed to add service - already in use ?
...
2
votes
1answer
277 views
Can we now use the DSI cnnector?
Now that the GPU source has been made open source, will we be able to use the DSI connector to power display panels?
4
votes
1answer
3k views
Is it possible to do GPU-accelerated tasks on a raspberry pi?
I have been looking into doing some cluster computing on several raspberry pis. Is it possible to use any kind of GPU acceleration on a pi?
2
votes
1answer
4k views
Raspberry pi 4 - Framerate drop with video on chromium browser
I have a problem using chromium-browser in kiosk mode on a raspberry pi 4.
I launch a web interface in Html with my video on it. Sometimes there is some drop frame / lag on the video, and I don't ...
