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Forum: Chat Room
Thread: Can you do more with less? 134.5 Floating Point MIPS/W.... still tweaking |
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Thread Status: Active Total posts in this thread: 158
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Marc Andre Wyss
Advanced Cruncher Switzerland Joined: Jun 4, 2009 Post Count: 57 Status: Offline Project Badges: 
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@David Autumns: Hypernova suggested to reduce the fan speed, not me. But thanks anyway.
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges: 
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I was sure someone mentioned that a reduced temperature limited the leakage losses within the core
----------------------------------------but when I looked through bleary eyes this morning I couldn't see it I was sure it was you sir  It works though whoever it was  |
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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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Was me here; "using a fan can often reduce the power usage, as leakage increases with heat".
----------------------------------------Running GPU tasks I can see power usage rising with GPU temperature (with fixed fan speed). So I set it nice and high, to reduce the power leakage, as much as my ears can withstand. The same applies to CPUs, just not quite as much. I have 2 more systems to report. The first is a somewhat dated Opteron 1354 @ 2.2GHz (1.25V). This Quad system has a Whetstone of 1834 and a Dhrystone of 5572. It uses 203W while the GT240 is snoozing. At 36 FPMips/W it’s nothing special; Dave’s Whetstone is higher and Dave’s Wattage is about half that, making this system much less than half as efficient! It does have 3 large Hard Disk drives, a DVDRW, 3 big fans, an HP PSU, and uses DDR2, but that is no excuse. Secondly, and more optimistically is my Q8400; this is in a system with a small motherboard and a 250W PSU. It uses DDR2 but only has a single HDD, a DVDRW and a USB wireless adapter. With 4 WCG tasks running it soaks up 112W, and has a Whetstone of 2716. The Dhrystone is 7953. That is with a 10W idle GPU. Although this is only 95 FPMips/W it’s not bad. Still looking forward to Hypernova's HT-Off reslts (and dark Maths  )...[Edit 3 times, last edit by skgiven at Jul 9, 2010 10:36:14 PM] |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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ah ha there it is - thanks skgiven ;-)
----------------------------------------I have been banished from wcg for today on the monster cruncher  After claiming it was now completely stable and I bagged my Sapphire for HCC I redirected my efforts onto HPF2 A very warm day in Brussels combined with too low a fan speed and.... There it was a bag full of "computation errors"  The WCG servers have packed their bags and taken their work units home with them.  No more work units for me today if that's what I am going to do with them I have tried everything disconnect reconnect uninstall reinstall changing my PC's name but try as I might I can't convince them it's not me and my Green Machine really does deserve a second chance. Looking for large prime numbers at the moment  Roll on 2am Belgian Time. I'll be back <--- has to be said with an Austrian accent Kevin I promise to be good from now on Disaster Dave [Edit 1 times, last edit by David Autumns at Jul 10, 2010 11:31:11 AM] |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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http://www.youtube.com/watch?v=RIOiwg2iHio
----------------------------------------This seems appropriate in the circumstances "It isn't easy getting more that 106.5 Floating Point MIPS/Watt" is not such a snappy title for a tune Enjoy [Edit 3 times, last edit by David Autumns at Jul 10, 2010 11:50:59 AM] |
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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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Hi Dave,
Excluded because you tried to be Green When you move projects it is always a good idea to Mix and Match; run several projects on the one Rig, until you know they will run well. It really is a pity WCG cannot identify failing Projects rather than just excluding the system. HPF2 is one I have seen fail on a couple of systems for me, and I know others (Including Hypernova) have suffered a similar fait. |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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http://www.overclockers.co.uk/showproduct.php...p;catid=6&subcat=1328
----------------------------------------You can smell it in the air like oncoming rain it has a strange requirement placed on obtaining it though see this page for details http://www.overclockers.co.uk/productlist.php...mp;catid=6&subid=1328 6 2.8Ghz Cores with a 95W TDP for £170 Back in my P111 days I said I would never pay more than £200 for a processor. Looks like I will still be able to keep that pledge 106.5 is looking threatened |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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It should arrive on Tuesday
----------------------------------------  I'll let you know how it goes |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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It says on the website.....
----------------------------------------On vehicle for delivery, due between 12:04 - 13:04 The suspense |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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first pass 126.6 FP MIPS per Watt
----------------------------------------Let the tweaking commence For those concerned about the 905E don't worry it will be recycled.... into a very nice server I'm building  edit just noticed I have bagged another sapphire  [Edit 1 times, last edit by David Autumns at Sep 14, 2010 1:43:07 PM] |
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