Dummy Plugs/ Multiple GPUs - page 2.

Nemesis099

full member

Activity: 205

Merit: 100

Quote from: innervisi0nn on June 03, 2011, 05:29:35 PM

Quote from: tito13kfm on June 03, 2011, 02:10:56 PM

Quote from: innervisi0nn on June 03, 2011, 01:09:12 PM

Just build a dummy plug, all you need are some resistors and a dvi/vga adapter/port.
I used to do this, but everytime my PC would restart or power went out, it was a bitch doing this every day!

Dummy plugs, no worries!

My linux server has 186days uptime. Where do you live that power goes out that frequently?

Its not about where I live lol..its my damn apartment circuit at home...1.2 ghash takes alot of power with these damn 5830s..i plug a hair dryer in and blows the circuit..

If that is the case I highly recommend you plug into a different outlet as well as get a battery backup.

I got a battery backup and put mine in the basement where it has a 20Amp breaker and the only other thing hooked up is a freezer.

If you are blowing the circuit breakers all the time I would be worried.

willphase

hero member

Activity: 767

Merit: 500

Quote from: 5tr1k3r on June 10, 2011, 05:57:15 AM

Quote from: ?? on ??

Quote from: BitCheddar on June 03, 2011, 02:48:34 PM

Cheaper and simpler dummy plug.

http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html

Even cheaper and simpler dummy plug:

http://blog.zorinaq.com/?e=11

I'm using 2 of them...

Some more confirmations from somebody else? Looks like good and easy method.

I would (personally) avoid this - if the wires cross somehow you're blowing the vid interface rather than your VGA converter. Use the VGA converter that comes with every video card, and just put the resistor between pins 1 and 6 - you only need one resistor (there is no benefit to 3, just costs 3x as much).

W

5tr1k3r

newbie

Activity: 39

Merit: 0

Quote from: ?? on ??

Quote from: BitCheddar on June 03, 2011, 02:48:34 PM

Cheaper and simpler dummy plug.

http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html

Even cheaper and simpler dummy plug:

http://blog.zorinaq.com/?e=11

I'm using 2 of them...

Some more confirmations from somebody else? Looks like good and easy method.

namley

member

Activity: 62

Merit: 10

I do something similar but not really.

I'm using Pheonix as my RPC miner, and I do this

Step 1: Start miner on Card 1
phoenix.exe DEVICE=1
Step 2: Switch VGA/DVI/HDMI cable to Card 2
Phoenix.exe DEVICE=1
Step 3: Switch VGA/DVI/HDMI cable to Card 3
Phoenix.exe DEVICE=1

Notice the device number is the same, but it initiates the process thread depending on the Active GPU in windows.

I have only tested this in Windows 7, no other operating system.

Works for me

Hope this helps.

Internet151

full member

Activity: 174

Merit: 100

I tried this registry tweak too under Windows 7 32-bit without crossfire on keys 0000 0001 0002 and 0003.

Didn't work.

Chucksta

full member

Activity: 168

Merit: 100

Quote from: gamecom on June 07, 2011, 08:49:42 AM

Quote

I've had EnableUlps set to 0 for quite some time (Crossfire related problem with 1 card randomly going to 0% load). I can confirm that this will NOT allow you to start mining on a GPU that doesn't have a monitor attached.

My solution. My monitor has 3 inputs. I plug my 2 cards in to it. 1 DVI 1 DVI-VGA. Start mining and overclock 1st card, hit switch input, start mining and overclock 2nd card.

Did you set it up on all cards eg. under the 0000 and 0001 or 0003 keys? It works fine for me, my config:
Windows 7 x86
HIS Radeon 5850
ASUS Radeon 5850 DirectCu TOP
Latest catalyst drivers.
CrossFireX enabled
Cards are linked with CrossfireX bridge. If it still doesn't work, there's another solution, run furmark or another GPU heavy application for a minute, then the second GPU will appear ready for mining - I was doing this before learning the ULPS trick.

This did not work for me either. I had changed all 3 keys to 0, but my cards are not linked by a CrossfireX bridge. I expect the CrossfireX bridge is the key here. If so, then I will stick with a KVM, as crossfire has a detrimental affect on the mining performance.

gamecom

newbie

Activity: 8

Merit: 0

Quote

I've had EnableUlps set to 0 for quite some time (Crossfire related problem with 1 card randomly going to 0% load). I can confirm that this will NOT allow you to start mining on a GPU that doesn't have a monitor attached.

My solution. My monitor has 3 inputs. I plug my 2 cards in to it. 1 DVI 1 DVI-VGA. Start mining and overclock 1st card, hit switch input, start mining and overclock 2nd card.

Did you set it up on all cards eg. under the 0000 and 0001 or 0003 keys? It works fine for me, my config:
Windows 7 x86
HIS Radeon 5850
ASUS Radeon 5850 DirectCu TOP
Latest catalyst drivers.
CrossFireX enabled
Cards are linked with CrossfireX bridge. If it still doesn't work, there's another solution, run furmark or another GPU heavy application for a minute, then the second GPU will appear ready for mining - I was doing this before learning the ULPS trick.

allinvain

legendary

Activity: 3080

Merit: 1080

Umm that's nuts. You may want to put the miners on a separate circuit if possible. If for some odd reason you're running everything in the apartment off of a single circuit then whoever wired that apartment should be shot.

innervisi0nn

member

Activity: 98

Merit: 10

Tutorials, guidelines, optimizations for all!

Quote from: tito13kfm on June 03, 2011, 02:10:56 PM

Quote from: innervisi0nn on June 03, 2011, 01:09:12 PM

Just build a dummy plug, all you need are some resistors and a dvi/vga adapter/port.
I used to do this, but everytime my PC would restart or power went out, it was a bitch doing this every day!

Dummy plugs, no worries!

My linux server has 186days uptime. Where do you live that power goes out that frequently?

Its not about where I live lol..its my damn apartment circuit at home...1.2 ghash takes alot of power with these damn 5830s..i plug a hair dryer in and blows the circuit..

BitCheddar

newbie

Activity: 15

Merit: 0

Cheaper and simpler dummy plug.

http://www.overclock.net/folding-home-guides-tutorials/384733-30-second-dummy-plug.html

tito13kfm

newbie

Activity: 42

Merit: 0

Quote from: innervisi0nn on June 03, 2011, 01:09:12 PM

Just build a dummy plug, all you need are some resistors and a dvi/vga adapter/port.
I used to do this, but everytime my PC would restart or power went out, it was a bitch doing this every day!

Dummy plugs, no worries!

My linux server has 186days uptime. Where do you live that power goes out that frequently?

innervisi0nn

member

Activity: 98

Merit: 10

Tutorials, guidelines, optimizations for all!

Quote from: sir murray on June 03, 2011, 06:14:04 AM

I don't really understand this totally. Any GPU I plug in for mining other than the one attached to the primary monitor will remain unavailable for mining in windows? If this is so, does cycling the monitor through the GPUs activate them for mining? These steps would work?

1. Install 3 GPUS

2. Start mining on 1st GPU.

3. Switch monitor to 2nd GPU, start mining.

4. Switch monitor to 3rd GPU, start mining.

This would allow me to run all 3 GPUs without a dummy plug in 2 of them, right?

Just build a dummy plug, all you need are some resistors and a dvi/vga adapter/port.
I used to do this, but everytime my PC would restart or power went out, it was a bitch doing this every day!

Dummy plugs, no worries!

tito13kfm

newbie

Activity: 42

Merit: 0

I've had EnableUlps set to 0 for quite some time (Crossfire related problem with 1 card randomly going to 0% load). I can confirm that this will NOT allow you to start mining on a GPU that doesn't have a monitor attached.

My solution. My monitor has 3 inputs. I plug my 2 cards in to it. 1 DVI 1 DVI-VGA. Start mining and overclock 1st card, hit switch input, start mining and overclock 2nd card.

chiropteran

sr. member

Activity: 348

Merit: 250

Quote from: gamecom on June 03, 2011, 06:28:16 AM

I'm mining with on Windows my two 5850's and didn't ever thought about need to use the dummy plugs, it isn't needed!
You just need to disable ULPS - this mechanism disables the second card without monitor/workload. Here's how to do it:

Quote

Go to registry and disable Ulps:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys.

Awesome, I just ordered some new parts and forgot about the whole dummy plug thing, if this eliminates the need for them I won't have to bother.

airdata

hero member

Activity: 1148

Merit: 501

Quote from: gamecom on June 03, 2011, 06:28:16 AM

I'm mining with on Windows my two 5850's and didn't ever thought about need to use the dummy plugs, it isn't needed!
You just need to disable ULPS - this mechanism disables the second card without monitor/workload. Here's how to do it:

Quote

Go to registry and disable Ulps:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys.

Sir, you're a gentleman and a scholar. I'll try that later. Although I spent $16 and ordered 20 vga/dvi dongles and 100 capacitors to make the ghetto rigged dummy plug.

Not that I don't love having hdmi-hdmi for my main system, hdmi-dvi for gpu1 on miner and vga-vga/hdmi dongle - hdmi for gpu2 on miner

allinvain

legendary

Activity: 3080

Merit: 1080

If the registry hack works it would mean I just bought 4 dummy plugs for nothing Tongue

Anyone tried it on Win 7 64 bit?

qed

full member

Activity: 196

Merit: 100

Quote from: bulbur on June 03, 2011, 07:29:01 AM

Can anyone confirm that this works?

Not working at all for me.

bulbur

newbie

Activity: 4

Merit: 0

Can anyone confirm that this works?

sir murray

newbie

Activity: 31

Merit: 0

Quote from: gamecom on June 03, 2011, 06:28:16 AM

I'm mining with on Windows my two 5850's and didn't ever thought about need to use the dummy plugs, it isn't needed!
You just need to disable ULPS - this mechanism disables the second card without monitor/workload. Here's how to do it:

Quote

Go to registry and disable Ulps:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys.

Cool very useful. So I can do this, restart windows, and I can mine with all the GPUs?

Chucksta

full member

Activity: 168

Merit: 100

Quote from: gamecom on June 03, 2011, 06:28:16 AM

I'm mining with on Windows my two 5850's and didn't ever thought about need to use the dummy plugs, it isn't needed!
You just need to disable ULPS - this mechanism disables the second card without monitor/workload. Here's how to do it:

Quote

Go to registry and disable Ulps:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Cl ass\{4D36E968-E325-11CE-BFC1-08002BE10318}]

and change "EnableUlps" to 0 under the 0000 and 0001 or 0003 keys.

Awesome, you are the man !

Noted, just in case of future development

Topic: Dummy Plugs/ Multiple GPUs - page 2. (Read 30548 times)