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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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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges: 
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I'm definitely developing a stutter in my typing. My work emails are doing the same!
----------------------------------------Weird "Get 2 1055T systems and if you are are careful" Need to get a bucketful of ZZzz's  Thank goodness it's Friday   |
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krakatuk
Advanced Cruncher Germany Joined: Oct 3, 2008 Post Count: 141 Status: Offline Project Badges: 
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I see there is a lot to calculate here.
----------------------------------------Even if I'm a big AMD fan, but longterm it seems to be a better choice to go for 980X. To reach 55k points of 980X you would need three 1055T. 3x 1055T would make 62k points, but consume 137x3=411W. That's a lot of power. Moreover 3x1055T are not that much cheaper than 1x980X.  |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
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Does anyone think we'll be crunching on ARM processors a few years down the road?
----------------------------------------http://www.anandtech.com/show/3905/arm-brands...nes-notebooks-and-servers  |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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Hi Kateiacy I hope so but it will probably have to be emulating X86
----------------------------------------But that's what the Atom is doing under the covers anyway It would be good to have another company in the mix driving the efficiency progress. If I could crunch on an Android Phone without running between chargers that would be cool. I have just rescued a 2Ghz Turion Laptop from turning into Landfill It's 31W TDP single core is keeping me cosy tonight - it's freezing out Recycling - you can't beat it 1250 FP MIPS of extra number crunching added to the WCG Super Computer Dave |
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Hypernova
Master Cruncher Audaces Fortuna Juvat ! Vaud - Switzerland Joined: Dec 16, 2008 Post Count: 1908 Status: Offline Project Badges:
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David I was not able to beat the ratio MIPS/W you have at the moment with the rigs I have, which are really designed to to the maximum possible work. With good efficiency but not the best possible because that was not the target. I had to compromise to get some balance with maximum work as a target.
----------------------------------------I did not mention it but having a 12 thread CPU like the 980X has another advantage and that is runtime. If you run it fully you may get 12 days runtime/day and that is unbeatable unless you have more than 12 threads in a CPU. Since a few days things have changed. I have started to crunch in parallel to my 980X CPU with a GPU on GPUGrid. I have so in the same rig two processors now crunching in parallel. Let's see what happens to that. I have not measured yet the consumption but the crunching power went from: 6 HT cores (HT adds 15%) 3'742 X 6 X 1.15 = 25'819 Floating point MIPS 1 GPU GTX 285 adds 708 GFLOPS (Boinc Benchmark) that is 708'000 Floating point MIPS. This means the total value for the rig is 733'000 Floting point MIPS. The power consumption measured by another cruncher was an additional 100 Watts which means I should be at 350 Watts. Let add a margin and say that I am at 400 Watts. Then I get 733'000 / 400 = 1'832 Floating point MIPS/W I know that I changed the rules of the game and we compare apple and oranges but up to a point. If we just focus on floating point operations CPU+GPU is the unbeatable and must have solution.  BTW the newest most powerful supercomputer in the world is Chinese and uses more than 7'000 Nvidia GPUs.   [Edit 1 times, last edit by Hypernova at Nov 20, 2010 9:29:36 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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Hi Hypernova
----------------------------------------Apologies I haven't been keeping up with this thread I have just one Intel in my number crunching arsenal and that's in my atom powered netbook It gets 2 days a day with just the one core and I must admit with the 20 years plus in my sig I feel ever so slightly guilty about that extra day a day Inside the CPU it is doing just 2 1/2 days of crunching and making the OS think it really has been busy for all the time it has been moonlighting on the other task The tasks take twice as long to run (almost...as HT does keep that core slightly busier which is why it is in the Intel design) But if you are lucky (and there are plenty of HT devices from Intel out there) then you would get the full amount of points for the task as the other HT device will have taken twice as long to do it's work and with the Benchmark using a single core (and not half of one) you would most likely get full points. But..let's not get in yet another discussion on the vagaries of the WCG/BOINC points allocation system. It's a flame war breakout if ever there was one  GPU's are another thing entirely and currently the WCG doesn't yet utilise this resource Rules is Rules and in this case for good reason But let me just say that 980X box of yours is awesome. How many crunchers do you have running for the WCG? Dave |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
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OK, I've been following this and other WCG forum threads as I prepare to build my dual-purpose machine. It will crunch WCG and GPUGrid every moment that it isn't being used for work (development and testing of multicore and CUDA-based statistical algorithms).
----------------------------------------I realize that both Intel and AMD are coming out with wonderful new processors in 2011, so my plan is to build a somewhat modest machine now and then build another machine in 6 months or a year when I see how all that shakes out. So any advice on the following plan: CPU: either AMD Phenom II X4 915e (2.6 Ghz, 65 W) or Athlon II X4 615e (2.5 GHz; 45 W) GPU: new Nvidia GT 430 (lowest end Fermi card; compute capability 2.1; 49 W) Motherboard, PSU, cooling still to be determined. Am I right in guessing that the Phenom's L3 cache and other features make it enough faster in computing than the Athlon to justify the additional 20 W? |
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David Autumns
Ace Cruncher UK Joined: Nov 16, 2004 Post Count: 11062 Status: Offline Project Badges:
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kateiacy
----------------------------------------I spotted this and remembered that question of yours on ARM processors http://www.betanews.com/article/Windows-8-wil...Microsoft-says/1294268873 Long term we might be in with a chance of crunching on next to no power For the moment though I think low power computing may have just moved slightly in favour of AMD's E Series Fusion CPU/GPU Zacate is a dual-core, 18-watt part with an integrated graphics core that Bergman claimed would have significantly better performance than the integrated graphics in Intel's GPU/CPU mashup, Sandy Bridge. Ontario is its 9-watt compatriot; both are based on AMD's Bobcat core. http://www.amd.com/us/press-releases/Pages/amd-fusion-apu-era-2011jan04.aspx with DX11 hardware support |
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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.amd.com/us/Documents/APU%20Carbon%...20FINAL%201%2021%2011.pdf
----------------------------------------Progress doesn't always mean using more resources |
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kateiacy
Veteran Cruncher USA Joined: Jan 23, 2010 Post Count: 1027 Status: Offline Project Badges:
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http://www.amd.com/us/Documents/APU%20Carbon%...20FINAL%201%2021%2011.pdf Progress doesn't always mean using more resources Interesting link! I hadn't seen it before, and have been trying to follow the AMD Fusion developments. |
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