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World Community Grid Forums
Category: Support
Forum: GPU Support Forum
Thread: Crunching with no monitor? |
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Thread Status: Active Total posts in this thread: 18
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Hardnews
Senior Cruncher England Joined: Oct 11, 2008 Post Count: 151 Status: Offline Project Badges: 
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Dear Doctors of Crunch:
I have an i7-2600K dedicated crunch box running Ubuntu. 11.04 64 bit. The motherboard has a primary graphics adapter, into which my VGA lead is plugged. The machine runs mostly with the monitor switched off (24/7) so I only need a screen when something goes wrong. I'm adding an Asus GTX 560Ti for experimental crunching. I'm hoping I don't need to plug a monitor into this to make it active for WCG betas, so - your thoughts: Ubuntu Linux, not Windows! regards s. |
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges: 
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I have never needed to plug a monitor in to get the GPU's to work in BOINC. I know this was a problem with FAH, but don't believe BOINC ever needed it.
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Former Member
Cruncher Joined: May 22, 2018 Post Count: 0 Status: Offline |
From: Doctors of Crunch
To: Hardnews No you need not attach a monitor, but vaguely remember at one time one needed some kind of loopback-plug, many moons ago. This I have not seen mentioned for years. Default BOINC activates the most powerful GPU card automatically, just one, so if there are more in a system, or not equal brand or not equal performant and you'd like to have them all crunch, then a cc_config.xml setting needs to be added to force the hand. --//-- |
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Hardnews
Senior Cruncher England Joined: Oct 11, 2008 Post Count: 151 Status: Offline Project Badges:
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Dear Doctors,
Thank you for the diagnosis. I will aim for an empirical approach, and just 'plug it in.' My memory too, remembers loop-back plugs, some grumbles that they were needed for Win 7 but not XP, or perhaps the other way around. I am quite capable of destroying hardware by 'plugging it in' so stand by for Ubuntu flavoured smoke. s. |
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Jim1348
Veteran Cruncher USA Joined: Jul 13, 2009 Post Count: 1066 Status: Offline Project Badges: 
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I remotely operate a PC with either one, two or sometimes three Nvidia cards in it under Win7 64-bit, and have not needed either a monitor or "dummy plug" (just a VGA plug with 75 ohm resistors to simulate the monitor load) for over a year now. That requirement was eliminated by a driver update from Nvidia, though I don't remember which version.
It is probably the same with Ubuntu, thought I don't really know. But you no longer get smoke these days. It is no fun at all. |
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mikey
Veteran Cruncher Joined: May 10, 2009 Post Count: 824 Status: Offline Project Badges: 
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I remotely operate a PC with either one, two or sometimes three Nvidia cards in it under Win7 64-bit, and have not needed either a monitor or "dummy plug" (just a VGA plug with 75 ohm resistors to simulate the monitor load) for over a year now. That requirement was eliminated by a driver update from Nvidia, though I don't remember which version. It is probably the same with Ubuntu, thought I don't really know. But you no longer get smoke these days. It is no fun at all. You DO need to plug in a monitor, or dummy plug, to each gpu, except the one built into the motherboard, at least for the AMD gpu's anyway, at least thru version 11.9 of the drivers.   |
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sk..
Master Cruncher http://s17.rimg.info/ccb5d62bd3e856cc0d1df9b0ee2f7f6a.gif Joined: Mar 22, 2007 Post Count: 2324 Status: Offline Project Badges: 
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Dataman
Ace Cruncher Joined: Nov 16, 2004 Post Count: 4865 Status: Offline Project Badges:
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Oldie but goodie ... the 30 second dummy plug. I used these with Vista and XP when running 2 cards/mobo. Not needed on Win7-64 bit.
----------------------------------------http://www.overclock.net/t/384733/the-30-second-dummy-plug   |
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Coleslaw
Veteran Cruncher USA Joined: Mar 29, 2007 Post Count: 1343 Status: Offline Project Badges:
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I remotely operate a PC with either one, two or sometimes three Nvidia cards in it under Win7 64-bit, and have not needed either a monitor or "dummy plug" (just a VGA plug with 75 ohm resistors to simulate the monitor load) for over a year now. That requirement was eliminated by a driver update from Nvidia, though I don't remember which version. It is probably the same with Ubuntu, thought I don't really know. But you no longer get smoke these days. It is no fun at all. You DO need to plug in a monitor, or dummy plug, to each gpu, except the one built into the motherboard, at least for the AMD gpu's anyway, at least thru version 11.9 of the drivers. Mikey...are you sure this isn't only for multiple AMD/ATI cards? I have a 4350 (yes I know old) that has ran for quite a long time (Collatz, Moo, PrimeGrid) with no monitor plugged into it. It is now in its third machine. (I have upgraded the others.) However mine is a single card machine not multi. It never had monitors plugged in once the system was built. I just login using remote desktop software. |
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Hardnews
Senior Cruncher England Joined: Oct 11, 2008 Post Count: 151 Status: Offline Project Badges:
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Thank you, all.
I feel in order to solve the Yes/No/Maybe dilemma the 'plug 'n pray' approach is answer. When this moderately priced yet possibly capable crunch-card arrives, I will report back. It's 64 bit Ubu 11.04, and an Asus GTX 560Ti. What can possibly go wrong? 'There is no substitute for the definate answers provided by smoking equipment. ' |
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