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17 views

OpenCL with NVIDIA - Segmentation Fault

I've been struggling to get OpenCL working on my Linux Mint x64 machine. Specifically, any OpenCL program that I write or use seems to encounter a "segmentation fault" during certain methods that come ...
3
votes
0answers
10 views

Why I need a framebuffer size larger then monitor size when transform destination area is smaller

I tried to remove 100px left & right the top of a 1366x768 screen (as below) using xrandr transformation. But I got an error about not enough framebuffer size. $ xrandr --output LVDS1 --fb ...
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0answers
11 views

pci_lookup_name how to? [migrated]

I'm new to libpci. I wrote a C program, that can dectect the GPU and give its vendor_id and device_id. Now I don't know if I can get the vendor_name from its ID using libpci. vendor = ...
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0answers
53 views

nvidia-smi hangs indefinitely: what could be the issue?

I try to run nvidia-smi from the shell on a machine, but it hangs indefinitely: what could be the issue?
1
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1answer
58 views

Should I use KVM or Xen ? What are the main differences? [closed]

I've spent a few hours trying to understand the differences between KVM and Xen without much succes. So both are Type 1 Hypervisors with comparable performances (source) and I don't understand what ...
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0answers
16 views

List the GPU utilizations for each screen

How can I list all screens launched with screen along with their GPU utilizations? (screen -ls gives the lists of screens but not their GPU utilization) By GPU utilization of a screen, I mean the sum ...
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0answers
22 views

Why nvidia-smi's GPU so rarely reaches 100%?

I have logged the GPU utilization of my 3 GPUs (GeForce GTX Titan X) for 5 days with nvidia-smi, every 10 seconds. The GPUs were all being utilized: I count 1307 occurrences of 99 % while only 8 ...
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0answers
8 views

Can I start a service with optirun?

I have a laptop with two GPUs (Intel and NVidia) so I have to use Bumblebee (via optirun) to use my NVidia GPU with some applications. I would like a service, which can be found in /etc/init.d, to ...
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2answers
106 views

How to log GPU load?

I wonder how to log GPU load. I use Nvidia graphic cards with CUDA.
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0answers
15 views

Zorin OS 9 (potentially) not detecting my GPU and monitor stopped displaying 1080p

I recently installed Zorin OS 9, which is based off of Ubuntu 14.04 LTS. I also have an PowerColor Radeon R9 270 TurboDuo installed. When I first got the PC to work, the monitor displayed 16:9 1080p ...
5
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1answer
43 views

Determine if a graphics card is new

The 1 GB ATI/AMD dedicated graphics card of my Dell Inspiron N5010 laptop failed recently and I got it repaired from a local laptop service center as the laptop is out of warranty. The service man ...
1
vote
1answer
23 views

Monitoring GPU memory I/O

Is there any way to monitor GPU memory I/O from the shell, with Nvidia graphic cards used with CUDA? I use nvidia-smi to see the current memory utilization, but I would prefer to see the deltas ...
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0answers
37 views

Is AMD GPU FirePro support enough for Linux's Matlab and CUDA?

I need GPU with CUDA support and open-source community support for FFT computation with Matlab R2015b. I think I need to reject nVidia GPUs because of bad open-source support, here Torvalds about ...
1
vote
1answer
43 views

How to kill all processes using a given GPU?

I use the CUDA toolkit to perform some computations on my Nvidia GPUs. How to kill all processes that use a given GPU? (killing at once, i.e. without having to manually type the PIDs behind kill -9.) ...
7
votes
1answer
67 views

How to get the GPU execution time of a script in the shell?

I would like to display the completion time of a script, in terms of GPU time (not CPU). For the CPU, I can simply use time: francky@gimmek80s:~$ time ls -l total 8 drwxrwxr-x 3 francky francky 4096 ...
1
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0answers
27 views

GPU usage per process on a Linux machine (CUDA)

I use the CUDA toolkit to perform some computations on my Nvidia GPUs. How can I see the per-process GPU usage on a Linux machine (CUDA)? nvidia-smi does list all processes for each GPU, but doesn't ...
3
votes
0answers
29 views

User-based GPU priority

I have a computer running Linux (Kubuntu 14.04.3 LTS x64), where I use the CUDA toolkit to perform some computations on some Nvidia GPUs. I share the computer with a few other users. How can I define ...
0
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2answers
146 views

ffmpeg: nvenc mit crf option - very low bitrate

I bought a new computer some time ago.. I installed nvenc for ffmpeg to encode my videos with the h264 codec. To optimize i used the -crf option but something went wrong.. I want to encode a full ...
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0answers
26 views

Per-user GPU usage on a Linux machine (CUDA)

I use the CUDA toolkit to perform some computations on my Nvidia GPUs. How can I see the per-user GPU usage on a Linux machine (CUDA)? nvidia-smi doesn't seem to contain information: I am aware I ...
1
vote
2answers
149 views

Unable to load the kernel module 'nvidia.ko'

On my system I'm unable to install the recommended graphics driver, so something must be wrong with my installation. The GPU chipset is ATI ES1000, but the recommended driver is NVIDIA NVS300 ...
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0answers
44 views

High GPU usage before starting X-Server

When starting my Debian Jessie, my GPU (ATI 5770) uses a lot of power (it is getting hot), although I am only displaying the terminal. Then, if I start an x-server, the GPU cools down again, also the ...
1
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0answers
68 views

How to boot Arch Linux after changing from AMD Radeon HD to Nvidia GTX video card?

After swapping video cards my PC boots into Windows 7 just fine, but Arch Linux gets stuck before entering graphical mode. /var/log/Xorg.0.log contains some message listing all the supported AMD (aka. ...
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0answers
211 views

Virtualbox and GPU Pass-trough: Device with host PCI address already attached to this VM

I have server with several GPUs. My idea is to attach them to different VMs in order to use that VMs in CUDA (or OpenCL) calculations. My setup: CPU: Intel Xeon E5-2670 GPUs: 1 x Radeon HD 7970 ...
0
votes
0answers
22 views

how to stop GPU NVIDIA calculation

I'm currently into learning using NVIDIA for parallel calculation. Sometimes I run too many tasks in parallel and my computer stops responding (I use both CPU and GPU for calculations). So, I cannot ...
3
votes
1answer
113 views

Multi GPU Supercomputer

I have a supermicro server running ubuntu server 14.04, and I would like to install a Quadro 400 (for display) a Nvidia GTX 295 and a Nvidia K80 however, when I install the driver for the K80 the ...
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0answers
184 views

How to switch between GPUs on Mint 17.2 ASUS laptop?

I'm new at working with laptops and Linux as system for everything. I have small problem, I don't know how to check, and change if somethings is wrong, which gpu is used in games. I have NVIDIA ...
3
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0answers
229 views

Guide to set up GPU passthrough

I have been trying for several days now (had to reinstall arch twice during), with setting up GPU passthrough on my pc without success. The hardware is Asus Z97-P Intel I5-4690 AMD Radeon R9 380 ...
0
votes
0answers
51 views

Lubuntu: fullscreen image moved to the left

If I run DOSBox or LTris fulscreen on Lubuntu, the image is moved to the left. This happens both with open-source drivers and NVIDIA drivers. My GPU is: Gigabyte Geforce 8500GT What could be wrong? ...
1
vote
2answers
308 views

Remove nouveau driver (nvidia) without rebooting

I have a Ubuntu Version here, that is started from USB as a Live version. I do not want to install it on hdd, because it would be too much for only testing a small thing on Ubuntu. So I started ...
1
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0answers
73 views

multiseat dual gpu, can I have 2 different drivers?

I have 2 radeon 7950, set up my multiseat, everything is working fine. I use the free radeon drivers, and I'm pretty happy except for one thing, I can't test the gpu mining of bitcoins.... I'd like to ...
0
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0answers
2k views

Debian 8 Jessie and NVIDIA drivers

I am in the process of installing Debian 8.0 on a laptop with NVIDIA graphics cards. After a successful installation and reboot I use this guide to install the proprietary NVIDIA drivers; essentially ...
3
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1answer
289 views

Multi Nvidia GPU overclocking for computations (CUDA)

I have seen in forums and manuals that you have to add Option "Coolbits" "value" to xorg.conf or similar files. I have been able to get this working for the first GPU, the one rendering the ...
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0answers
185 views

How to install graphic capabilities to CoreOs?

I would like to install CoreOs as a base on my desktop machine. Then, I could launch some containers, with eventualy a graphical environnement. So I have to add all the graphic stack: GPU drivers, ...
1
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0answers
19 views

Booting with different X settings

My laptop has the Optimus technology. In order to save battery life I run graphics out of my CPU and only turn the GPU on on occasions using bumblebee. This works relatively well as long as I don't ...
1
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0answers
73 views

2 monitors on GPU, 1 monitor on integrated graphics

I am on linux mint 17.1 cinnamon. Here is my xorg.conf: http://pastebin.com/6xCncZJ5 I can move my mouse around on the 3 monitors but can not drag the windows over the borders. Cinnamon is running in ...
0
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1answer
73 views

Install Mesa to home folder and make applications use it from there

I'm trying to help debug an issue with Mesa and the llvm r600 shader compiler, and would prefer not to install the test compiles of these packages system wide. My question therefore is: How can I ...
1
vote
1answer
2k views

My graphic card is not recognized on laptop/debian

My graphic card is not recognized on my laptop with Debian Jessie installed and a Nvidia Geforce GTX 850M. glewinfo tells me it uses Mesa DRI with Intel (OpenGL 3.0) instead of Nouveau with the ...
0
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1answer
4k views

Linux GPU Pass-through Virtualization - Verify wich component causes trouble

GPU Passthrough Virtualization with KVM or VirtualBox For a research project I need to passthrough a PCI GPU from a Ubuntu Host to a Windows 8.1 guest. We need to test a certain setup, where the ...
0
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0answers
33 views

Login dialog doesn't stay on screen long enough to input credentials(resume from screensaver)

I have an old computer which I upgraded the GPU to Mobility Radeon HD 5430 Series, I just installed the modules for Debian Wheezy, but now my screen-saver doesn't work anymore, when I come back to the ...
1
vote
2answers
943 views

How to get the size of GPU memory available for OpenCL?

How is it possible to get the size of the memory on a GPU, which is available for programs with use OpenCL for computations, such as darktable? I know of lspci which gives some general informations, ...
0
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0answers
41 views

Gpu rig, possibilities

My plan is to buy old and cheap graphic cards on the internet and build a gpu rig for password cracking. I have been playing around for some while with OpenMPI and I love the fact that its possible ...
2
votes
1answer
394 views

What is the GPU driver I am currently running?

I have installed latest nVidia graphic driver via this PPA "xorg-edgers/ppa". Now in Nvidia X server setting showing the driver version is 346.35. But in Ubuntu's Additional Drivers there is no such ...
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0answers
133 views

Is my GPU causing MoviePlayer and Iceweasel trouble?

I am running Wheezy and am quite happy with it except: My Movieplayer and VLC have oversaturated colors and occasionally I get a black screen mid-video that can only be recovered by rebooting. Also, ...
1
vote
1answer
142 views

[ERROR]Cannot access secondary GPU…Failed to initialize the NVIDIA kernel module [closed]

I've installed Bumblebee with Ryan McQuen's crazybee.sh script, described here, and I'm actually able to startx successfully now (because Bumblebee uses the on-board Intel graphics by default), but ...
0
votes
1answer
51 views

What combinations of NVidia GPUs are well supported with with driver 319.82?

I'm using Debian 7.7 with the proprietary NVidia driver 319.82 and a GeForce 560Ti. This drives 2 portrait (rotated) monitors over DVI with no problem and I'm happy with the result. I'd now like to ...
0
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1answer
3k views

elementary os will not start after installing GPU drivers

I was having some problems with my laptop (asked a related question yesterday: http://elementaryos.org/answers/after-locking-the-computer-screens-look-all-messed-up) regarding some dual-screen issues. ...
4
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1answer
1k views

Can I scale GPU frequency?

My laptop is Thinkpad T400 with Ubuntu 12.04. My GPU is ATI graphics module, if I am not mistaken. I wonder how I can scale GPU frequency? software and/or shell script are acceptable. For cpu ...
1
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1answer
3k views

How can I tell what version of OpenGL my machine supports on Arch Linux?

How can I tell what OpenGL versions are supported on my (Arch Linux) machine?
1
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0answers
152 views

Zero graphic card fan speed when no calculations are performed

I have fresh install of ubuntu 12.04.4 LTS and CUDA 5.5 with nvidia-331.20 driver. There are 4 GeForce GTX 780 on board. X runs on integrated card, while Nvidia cards are superposed to do some ...
3
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2answers
2k views

Upgrading OpenGL Drivers

I'm trying to learn OpenGL and most tutorials on the internet only offer guidelines for OpenGL 3.0 and higher. So I looked for my OpenGL version and glxinfo | grep OpenGL yields this: OpenGL ...