OpenCL only seeing one GPU whilst using Multi-Desktop

-ck

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Ruu \o/

Quote from: carborundum on March 26, 2013, 07:21:43 PM

Quote from: -ck on March 26, 2013, 07:08:04 PM

Quote from: grue on March 26, 2013, 06:54:07 PM

Quote from: -ck on March 26, 2013, 06:50:14 PM

Quote from: carborundum on March 26, 2013, 05:36:12 PM

Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

AMD OpenCL stupidly sees each "screen" as a device. That means that if you have 2 monitors connected to one GPU, you get two opencl devices. Presumably the converse is also true, seeing one device with 2 GPUs making one virtual "screen" with xinerama. I'm guessing if you force an extra output on the 2nd card, either by config or by adding a monitor/dummy plug to another output on it, you'll get two opencl "devices". Don't ask me who the moron in AMD was that thought opencl compute devices should be associated with screens and not physical devices. Roll Eyes

I'm not using dummy plugs, but opencl still recognizes 2 devices.

But are you using 2 GPUs on xinerama with one virtual screen only?

Nope, its not the screens, they're recognised fine. It's something to do with xinerama. With xinerama "off" in the xorg.conf then clinfo reports all devices. If xinerama is on then only one device is registered. aticonfig --lsa shows all devices under all conditions. I'm begining to suspect its a driver problem??

Did you read my advice? Ignore the poster in between us.

carborundum

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Quote from: -ck on March 26, 2013, 07:08:04 PM

Quote from: grue on March 26, 2013, 06:54:07 PM

Quote from: -ck on March 26, 2013, 06:50:14 PM

Quote from: carborundum on March 26, 2013, 05:36:12 PM

Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

AMD OpenCL stupidly sees each "screen" as a device. That means that if you have 2 monitors connected to one GPU, you get two opencl devices. Presumably the converse is also true, seeing one device with 2 GPUs making one virtual "screen" with xinerama. I'm guessing if you force an extra output on the 2nd card, either by config or by adding a monitor/dummy plug to another output on it, you'll get two opencl "devices". Don't ask me who the moron in AMD was that thought opencl compute devices should be associated with screens and not physical devices. Roll Eyes

I'm not using dummy plugs, but opencl still recognizes 2 devices.

But are you using 2 GPUs on xinerama with one virtual screen only?

Nope, its not the screens, they're recognised fine. It's something to do with xinerama. With xinerama "off" in the xorg.conf then clinfo reports all devices. If xinerama is on then only one device is registered. aticonfig --lsa shows all devices under all conditions. I'm begining to suspect its a driver problem??

-ck

legendary

Activity: 4088

Merit: 1631

Ruu \o/

Quote from: grue on March 26, 2013, 06:54:07 PM

Quote from: -ck on March 26, 2013, 06:50:14 PM

Quote from: carborundum on March 26, 2013, 05:36:12 PM

Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

AMD OpenCL stupidly sees each "screen" as a device. That means that if you have 2 monitors connected to one GPU, you get two opencl devices. Presumably the converse is also true, seeing one device with 2 GPUs making one virtual "screen" with xinerama. I'm guessing if you force an extra output on the 2nd card, either by config or by adding a monitor/dummy plug to another output on it, you'll get two opencl "devices". Don't ask me who the moron in AMD was that thought opencl compute devices should be associated with screens and not physical devices. Roll Eyes

I'm not using dummy plugs, but opencl still recognizes 2 devices.

But are you using 2 GPUs on xinerama with one virtual screen only?

grue

legendary

Activity: 2058

Merit: 1452

Quote from: -ck on March 26, 2013, 06:50:14 PM

Quote from: carborundum on March 26, 2013, 05:36:12 PM

Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

AMD OpenCL stupidly sees each "screen" as a device. That means that if you have 2 monitors connected to one GPU, you get two opencl devices. Presumably the converse is also true, seeing one device with 2 GPUs making one virtual "screen" with xinerama. I'm guessing if you force an extra output on the 2nd card, either by config or by adding a monitor/dummy plug to another output on it, you'll get two opencl "devices". Don't ask me who the moron in AMD was that thought opencl compute devices should be associated with screens and not physical devices. Roll Eyes

I'm not using dummy plugs, but opencl still recognizes 2 devices.

-ck

legendary

Activity: 4088

Merit: 1631

Ruu \o/

Quote from: carborundum on March 26, 2013, 05:36:12 PM

Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

AMD OpenCL stupidly sees each "screen" as a device. That means that if you have 2 monitors connected to one GPU, you get two opencl devices. Presumably the converse is also true, seeing one device with 2 GPUs making one virtual "screen" with xinerama. I'm guessing if you force an extra output on the 2nd card, either by config or by adding a monitor/dummy plug to another output on it, you'll get two opencl "devices". Don't ask me who the moron in AMD was that thought opencl compute devices should be associated with screens and not physical devices. Roll Eyes

carborundum

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Anyone resolve this ancient problem? One of my cards disappears from OpenCL when Xinerama is activated.

leshow

newbie

Activity: 48

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I'll give that a shot tomorrow. if you get a brain wave later on and think you've got another solution, i'm always ready to try something. just figured you'd had enough by now Tongue

drawoc

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Quote from: leshow on June 29, 2011, 10:19:00 PM

i have a feeling this is about as good as it's gonna get though. thanks sooooo much for your help man you saved me weeks of tinkering with this thing. Is that donate address current?

Yeah, that address is correct.

I was gonna suggest going back to the other xorg.conf (with both monitors on one card), and adding this line to the device section for aticonfig-Device[0]-0 :
Option "DesktopSetup" "horizontal"

Anyway, if you don't want to tinker with it anymore, that's understood.

Good luck mining!

leshow

newbie

Activity: 48

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i have a feeling this is about as good as it's gonna get though. thanks sooooo much for your help man you saved me weeks of tinkering with this thing. Is that donate address current?

leshow

newbie

Activity: 48

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it's weird because the mouse can cross over but I can't bring any windows

leshow

newbie

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wow that worked great. openbox-session launches all the stuff I need with openbox, only thing is i cant drag between displays

drawoc

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You could try changing openbox to openbox-session, but I have a feeling it won't help much.

leshow

newbie

Activity: 48

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the behaviour is a bit weird.... I can't drag windows between the two displays, but if i export DISPLAY=:0.1 then launch an app from the terminal (while openbox from the command you gave me is still running) it launches the app WITH the right window decorators on the black screen.
EDIT:
OK. the black screen was just no wallpaper, I can right click and the openbox menu comes up (in the black screen display), but it launches apps to the FIRST monitor. also none of the stuff that is in the first session seems to be loading (panel on bottom, wallpaper, taskbar stuff). it's just behaving very strangely

both miners show up, but the other screen isn't really usable in this state. unless I'm leading openbox improperly and can get my monitor to drag windows between the two displays

leshow

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Activity: 48

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ok, will try that just have to copy over a few files before I can restart with the old xorg.

man if this works i'll be sending some BTC your way for sure!

drawoc

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Try:

Code:

export DISPLAY=:0.1
openbox

leshow

newbie

Activity: 48

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I've tested with all different configurations. I'm completely OK with it being on the second card.

When I have that config and put the plug in the second slot I get one screen with open box in it, and the other screen has X in it but not openbox. When I drag my cursor over there I just get an 'X' over the cursor (like X has loaded but there is no WM session running in it)

If you know how to launch openbox on that display I think that would fix it.

drawoc

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If you revert back to the 1st config you had in your 1st post (The one you said is cloned mode), and simply move one of the monitors to the second card, what happens?

That should be what you're looking for, if you're okay with having the monitors on separate cards.

leshow

newbie

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i added a 0 and a 1 to the screen lines. the xdpyinfo line doesn't output anything

drawoc

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Quote from: leshow on June 29, 2011, 05:40:19 PM

I think the problem is it is only making one display, i see all these examples of exporting DISPLAY=:0 to get to miner to work or exporting DISPLAY=:0.1 to get access to a different display. However my setup seems to only have one display 0.0, I dont have to export for the miners to work and I can't switch to any other one.

You could try changing:
Screen "aticonfig-Screen[1]-0" LeftOf "aticonfig-Screen[0]-0"
to
Screen 1 "aticonfig-Screen[1]-0" LeftOf "aticonfig-Screen[0]-0"
It should force your second screen to be identified as :0.1

What's the output of "xdpyinfo -ext XINERAMA | grep head" now?
Openbox needs the screen geometry to be exported in the XINERAMA extension's protocol for the maximize on one screen thing to work. RandR provides this functionality, which is why I suggested turning it on. When the command above doesn't show anything, that suggests that there's no Xinerama information available.

leshow

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I think the problem is it is only making one display, i see all these examples of exporting DISPLAY=:0 to get to miner to work or exporting DISPLAY=:0.1 to get access to a different display. However my setup seems to only have one display 0.0, I dont have to export for the miners to work and I can't switch to any other one.

leshow

newbie

Activity: 48

Merit: 0

if I turn Randr on it makes no difference, tried:

xrandr --output DFP3 --auto --left-of DFP4

(proper names of the displays according to xrandr)

but it does nothing, so does trying to do it with grandr, the GUI front-end

drawoc

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Try adding this to your xorg.conf:

Code:

Section "ServerFlags"
Option "RandR" "on"
EndSection

leshow

newbie

Activity: 48

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Quote from: drawoc on June 29, 2011, 02:43:53 PM

Hmm... Openbox should maximize to one screen by default.

What's the output of this command?
xdpyinfo -ext XINERAMA | grep head

returns nothing. if i leave out grep head

Code:

name of display: :0.0
version number: 11.0
vendor string: The X.Org Foundation
vendor release number: 10707000
X.Org version: 1.7.7
maximum request size: 16777212 bytes
motion buffer size: 256
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 7
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 15, bits_per_pixel 16, scanline_pad 32
depth 16, bits_per_pixel 16, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
depth 32, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 8, maximum 255
focus: window 0x3200005, revert to Parent
number of extensions: 32
AMDXVBA
AMDXVOPL
ATIFGLEXTENSION
ATIFGLRXDRI
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
RANDR
RECORD
RENDER
SECURITY
SGI-GLX
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
glesx
default screen number: 0
number of screens: 2

screen info on screen #0 and #1 follows, it's very long. then

Code:

XINERAMA version 1.1 opcode: 128
Xinerama is inactive.

really appreciate all the help so far guys. I feel like there is a workaround close but I can't quite get it.

leshow

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Quote from: Grinder on June 29, 2011, 03:11:47 PM

Probably not the solution you prefer, but... http://forums.amd.com/forum/messageview.cfm?catid=390&threadid=146804

I have openbox, so I could enable the compiz extension and try but it won't be compiz-fusion like you get in gnome.

Grinder

legendary

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Probably not the solution you prefer, but... http://forums.amd.com/forum/messageview.cfm?catid=390&threadid=146804

leshow

newbie

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let you know as soon as i get home. there's a single taskbar across the entire 2 screens, which leads me to believe openbox doesn't know there are actually 2 monitors, it's behaving like one big screen.

drawoc

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Hmm... Openbox should maximize to one screen by default.

What's the output of this command?
xdpyinfo -ext XINERAMA | grep head

leshow

newbie

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no i'm using Openbox. I'm on crunchbang, it's a debian based distribution so most ubuntu settings will work, however I don't have gnome or any of the fancy gui's.

drawoc

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Remove the xinerama option.

I assume you're using Unity?
If you install the package compizconfig-settings-manager and then open the settings manager (themes and tweaks -> CompizConfig Settings Manager), you can go to:
Window Management->Place Windows
Try playing with the multi output mode option - see if you can get the effect you want.

leshow

newbie

Activity: 48

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i added

Option "Xinerama" "on"

in server layouts, it creates the 'desktop' I was looking for (though for some reason my wallpaper disappeared)

except now only one miner is seen by openCL,

Cypress

drawoc

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Quote from: leshow on June 28, 2011, 11:25:39 PM

any ideas on having them both be separate screens, but connected, like it would be in windows with multi-display?

You could try turning on Xinerama, by adding this line to ServerLayout:
Option "Xinerama"

Might help.

leshow

newbie

Activity: 48

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OK this is weird. I added:

Screen "aticonfig-Screen[1]-0" LeftOf "aticonfig-Screen[0]-0"

to my dual-head xorg (in the ServerLayout section) and I get a single BIG desktop stretched across 2 monitors. WITH BOTH GPUS RECOGNIZED BY OPENCL

it's closer to what I was hoping for, but when I maximize a window it doesn't behave separately, the window stretches across 2 monitors.

any ideas on having them both be separate screens, but connected, like it would be in windows with multi-display?

leshow

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[note these were executed using the SECOND xorg configuration (dual monitor, not cloned)]

leshow@crunchdesk:~$ export DISPLAY=:0.1
leshow@crunchdesk:~$ sudo aticonfig --pplib-cmd "get fanspeed 0"
[sudo] password for leshow:
ati_pplib_cmd: Unable to open display `:0.1'.
aticonfig: parsing the command-line failed.
leshow@crunchdesk:~$ export DISPLAY=:0
leshow@crunchdesk:~$ cd miners/poclbm/
leshow@crunchdesk:~/miners/poclbm$ ./poclbm.py
No device specified or device not found, use -d to specify one of the following

Cypress

drawoc

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Umm, in your post, you say that the first config is cloned mode, but reading the configs, it looks like the second is cloned mode...

Anyway, in that guide, are you doing the part where he types:
export DISPLAY=:0.1; aticonfig --pplib-cmd "get fanspeed 0"
to get the fanspeed? Or changing the DISPLAY variable at all for that matter?
If you are, you need to make sure you set DISPLAY back to :0 before mining, or only one card will show. You can do this like:
export DISPLAY=:0
Does that help?

leshow

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thanks for the response, you're right, changed!

Reikoku

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You should probably correct the title of your thread as Linux is quite clearly seeing both GPUs.

Your issue is more like 'OpenCL only seeing one GPU whilst using Multi-Desktop'. Whilst I don't know the fix, using the correct title will probably attract the attention of the people who will know and/or be able to test solutions for you.

leshow

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I followed this guide: http://forum.bitcoin.org/?topic=7514.0

aticonfig shows both of my cards.

this is the issue i seem to be having:

I can clone displays(single desktop), in which case both GPU's work for mining. this is the xorg.conf for that:

Code:

Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
Screen "aticonfig-Screen[1]-0" LeftOf "aticonfig-Screen[0]-0"
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[1]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:0:0"
EndSection

Section "Device"
Identifier "aticonfig-Device[1]-0"
Driver "fglrx"
BusID "PCI:2:0:0"
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[1]-0"
Device "aticonfig-Device[1]-0"
Monitor "aticonfig-Monitor[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

I can have a multi-desktop (xinerama still disabled). but only one GPU is seen by the miner. Here's the xorg.conf for the this scenario:

Code:

Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[1]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Monitor"
Identifier "0-DFP3"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "1920 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Monitor"
Identifier "0-DFP4"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Option "PreferredMode" "1920x1080"
Option "TargetRefresh" "60"
Option "Position" "0 0"
Option "Rotate" "normal"
Option "Disable" "false"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
Option "Monitor-DFP3" "0-DFP3"
Option "Monitor-DFP4" "0-DFP4"
BusID "PCI:1:0:0"
EndSection

Section "Device"
Identifier "aticonfig-Device[1]-0"
Driver "fglrx"
BusID "PCI:2:0:0"
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Virtual 3840 1920
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "aticonfig-Screen[1]-0"
Device "aticonfig-Device[1]-0"
Monitor "aticonfig-Monitor[1]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

what i would like to be able to do is have a multi-desktop (2 monitors where I can drag windows between them, not cloned) and have the miner recognize both GPUs. i'm willing to try anything guys. thanks!

Topic: OpenCL only seeing one GPU whilst using Multi-Desktop (Read 4720 times)