Message boards : Number crunching : "current GigaFLOPs" about to reach 1,000,000!
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When I joined (about... 1-2 months ago, the GigaFLOPs for this project were around 600K, now it's about to reach 900K, pretty impressive growth in such a short time. | |
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 dskagcommunity Send message Joined: 28 Apr 11 Posts: 456 Credit: 817,865,789 RAC: 0 Level  Scientific publications      | |
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Wintertime is the crunchers time ;) | |
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I concur to DSKAG's post. I'm new here and got a GTX 480, so crunching right now is like a better heating in my case! Saves me some costs for the heating at least, and since my PC would run either way I'm not really losing anything about power-consumption-costs. | |
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I concur to DSKAG's post. I'm new here and got a GTX 480, so crunching right now is like a better heating in my case! Saves me some costs for the heating at least, and since my PC would run either way I'm not really losing anything about power-consumption-costs. I've always wondered how much of the wattage being drawn is converted right into heat... | |
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Retvari Zoltan Send message Joined: 20 Jan 09 Posts: 2346 Credit: 16,293,515,968 RAC: 6,990,482 Level  Scientific publications  | |
I've always wondered how much of the wattage being drawn is converted right into heat... All of it (except the light emitted from the LEDs < 0.2W, but in the end this will be also converted to heat in the environment). Computing doesn't require power in theory, all power used during computing is required only because the devices used for computing are imperfect. There's no work done during computing in phisical sense, the work done is merely logical. So the effectiveness of computing is 0. That is why the speed of computing can be doubled every 18 months. But computing isn't the only activity during which all the consumed energy is converted into heat: every activity is like that. | |
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I've always wondered how much of the wattage being drawn is converted right into heat... So there's no difference between plugging a rheostat set to draw the same wattage as my video card in terms of heat generation? I get computing is "logical", but I mean there must be a percentage of the power being drawn that goes just into computing... unless every single electron passing thru the CPU/GPU generates it's own share of the total heat. I think I just answered my own question. | |
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TheFiend Send message Joined: 26 Aug 11 Posts: 99 Credit: 2,513,623,465 RAC: 1,110,067 Level  Scientific publications | |
I've always wondered how much of the wattage being drawn is converted right into heat... It could be said that heat generation is a byproduct of computing and with many crunchers are running 24/7 at 100% load they can contribute to keeping a house warm... That is unless you live in a warm country in which case it can be a problem. | |
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werdwerdus  Send message Joined: 15 Apr 10 Posts: 123 Credit: 1,004,473,861 RAC: 0 Level  Scientific publications  | |
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not to mention electric heat would generally be more expensive than natural gas heat | |
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http://en.wikipedia.org/wiki/Performance_per_watt | |
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Retvari Zoltan Send message Joined: 20 Jan 09 Posts: 2346 Credit: 16,293,515,968 RAC: 6,990,482 Level Scientific publications | |
http://en.wikipedia.org/wiki/Performance_per_watt The point is that the "effectiveness" of computing is measured by how much logical operations can be done using 1 Watt... I cannot find a source, but I have a memory of reading somewhere that a CPU is about 3% efficient in terms of calculations. ...and not how much power is "used in calculations", because it would mean that this much power is escaping from the physical existence to the logical existence. But the logical existence (aka data) is represented only by the arrange of matter in the physical existence, so there is no place for the energy to escape to. Let's say we have three objects in a horizontal plane marked A B and C (in that order). The three objects held in their place by the friction between the surfaces of the plane and the objects. Their arrangement is a datum, and friction helps to preserve both. When you swap two of them to change their order to A C B (and change the datum their arrange "store"), obviously this process requires some physical work to be done to overcome the friction which holds the three objects in their place. Their surface (and the surface of the device used for swapping them) will become hotter because of friction. All work done during the change is needed only to overcome the friction, and all energy is converted to heat by friction. The work done is only to change the order of the three objects, not the datum coming from their order, however their new arrangement apparently represents a different datum. While the three objects have physical characteristics, the datum coming from their order doesn't. Because the datum is only the figurative sense of their order. The advancement of computing is done by using smaller and smaller objects to represent information, therefore the process of changing their order (aka computing) requires less and less energy, but this "evolution" could not change the relation between physics and logic. At the moment the objects used for representing information are electrons, they don't have temperature, but the device they reside and are processed in (the transistor) has. Inside a transistor two kind of friction exists: parasitic capacitance and resistance. Just like in mechanical computers, all power is required only to overcome the impediments of the state changes, i.e. the parasitic capacitance and resistance of the transistors of the computing device. This power is instantly and entirely converted to heat. | |
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Stoneageman  Send message Joined: 25 May 09 Posts: 224 Credit: 34,057,374,498 RAC: 125 Level Scientific publications | |
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Now over 1 petaFLOP, which would place us at 24th in the top 500 supercomputer list. | |
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dskagcommunity Send message Joined: 28 Apr 11 Posts: 456 Credit: 817,865,789 RAC: 0 Level Scientific publications | |
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Aahh great thing :) grats to all of us ^^ | |
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Message boards : Number crunching : "current GigaFLOPs" about to reach 1,000,000!
