ClimatePrediction.net

Soldato
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I've just dug out my CPDN account and installed BOINC on my little Mac Mini that doubles as my media and development box. All linked to the OCUK CPDN team..

Only 2.66GHz C2D, 4GB DDR3 attached to a 110W power brick so in short it shouldn't be too OTT on power consumption.

I would have used the MBP previously but mine has the bump-gate GPU which would unsolder itself if it gets too hot..
 
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Woot! Almost completed the two UK Met Office HasSM3 Slab Model 6.09s started on the 4th! Recent average credit is 875.30.

Both are approx: Elapsed 217:32:40. Progress 99.193%. To completion 01:45:39 ...

Interesting it's already queued up the next two work units but of different types:
HADAM3P 6.14 - expected time to complete is 76:36:45.
HADSM3D 6.04 - expected time to complete is 209:30:06 (same as the two about to complete).
 
Dedicated crunching of any kind burns a lot of energy. Which in turn forces more fossil fuels to be burned releasing more and more CO2 and other greenhouse gases into the atmosphere.

Should CPDN be taken seriously if their own experiments and modelling are having an effect on what they are studying? :D
 
They completed at 1am. Each model got a total of 7,100ish credit. So that's ~710 credit per model/day or 1,420 for the host/day.

I remember back in the say (2005ish) when they brought out sulphur models - I think it took a month of 24/7 CPU time on my old computer.
 
Welcome (back)!

When you foldy types have enough of your proteins feel free to help model the Earth :p

Also Sirius my good man, my flat is run by Ecotricity's "Plus" tarriff. 100% green. Fnar! Plus they price match the big 6.
 
I'm really dubious about the whole green energy thing. Do they send your green energy down a different cable to everyone else's normal energy? :p
 
I was just thinking that... You are paying for green energy yet the actual energy you're getting is probably produced by that big coal fired power station nearest to you! :eek:

I suppose more of the energy in the grid is produced by greener means, but the majority of it is still dirty, dirty leccy :D

As an aside, I will never bother with CPDN, mostly because you can pick any two "experts" at random and they will tell you two completely different reasons about what is going on with the climate. I don't trust any of them. One group of scientists have already set the precedent for fiddling of data to suit their agenda.

I'd rather cure cancer and alzheimers! We already know how to help the environment, we just choose not to.
 
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That's true for most energy companies. Ecotricity however run their own wind farms, so yes it is actualy renewable energy I'm paying for. They invest entirely in their own farms.

Also SB, it might seem like there is great "debate" about what is actually happening, but I've never seen anything written by a scientist who claimed climate change was not anthropogenic who wasn't also funded by an oil company. I'm doing physics at Imperial, and every climate or atmospheric physicist I've spoken to would say that there's a good chance that greenhouse gasses from human behaviour will bring about a large rise in average temperature in the next hundreds or thousands of years.

The CRU story was jumped on by "climate skeptics" immediately, but as I expected, all their claims were out of context. See the wikipedia article for more info. The crux of it is:
Independent reviews by FactCheck and the Associated Press said that the emails did not affect evidence that man made global warming is a real threat, and said that emails were being misrepresented to support unfounded claims of scientific misconduct.

So, in my mind (from my experience too) the theory behind global warming is sound. By which I mean that the larger scale behaviour (forget about predicting the weather in your town - that's much harder) is well modelled, but very susceptible to initial conditions. The best thing to do then is run the climate simulations lots and lots of times, which is where CPDN comes in.

And surprise surprise, their model predicts a jump in worlwide average temps over the next 100 years. No data fiddling, just thermodynamics and initial conditions.

I leave you with what I thought was the most persuasive thing: click me (taken from here, called 'Myles Allen, Energy and Climate: understanding climate change, Said Business School, Oxford, January 2008') The server is a bit flakey.
In particular slides 12 and 13. 12 shows the model with human influences turned off (diverges) compared to 13 with humans turned on (good fit).
The other presentations on that link are also interesting.

And regarding folding and finding a "cure for cancer" - I think humans are doing quite well enough. I'm much more concerned about the (up to) 140,000 species which go extinct each year (source), mostly due to habitat destruction, hunting by humans, and yes, climate change.
Overall, the Holocene extinction is most significantly characterised by the presence of human-made driving factors.
 
That's true for most energy companies. Ecotricity however run their own wind farms, so yes it is actualy renewable energy I'm paying for. They invest entirely in their own farms.

Don't doubt it, but they still feed the National Grid like everyone else - so your electricity won't be any greener than your neighbour on the cheapskate tariff. This isn't a criticism of your choice, which I respect (I may do the same myself when current tariff runs out next year), but any claim that your electricity supply is 100% green is only true if you generate it yourself (turbine in the back garden, anyone).

As for CPDN, I have no problem with doing it, and have done so in the past. Irrespective of the bickering among scientists and politicians, research is good, and information is better. Of course, the quality of the information depends on the quality of the models - how many of those models give a damn about Eyjafjallajökull, or Katla, or the countless other natural wonders that can mess with our climate without warning (admittedly the current problems may be rather short-term, and thus irrelevant).
 
I don't doubt that some global warming is man-made. How can it not be? We have released so many greenhouse gases into the atmosphere, every single day for the last 100 years, and we now have nations such as China who are going through their own industrial revolutions adding to that.

However, I am more interested in the immediate harm that industry is doing to the planet. Forget the climate, what about the rest of the environment? I don't think CPDN can do anything to stop people being so wasteful and destructive of resources and habitats.

I am not belittling it, as I agree with Berserker in that all data is good to have, I just believe the whole world is hung up on climate change when we have far more immediate problems to fix.
 
Don't doubt it, but they still feed the National Grid like everyone else - so your electricity won't be any greener than your neighbour on the cheapskate tariff.

As a Generator roll within the deregulated electricity market they will produce electricity onto the grid. Any distributor can then buy the electricity from any source every 30 minutes.

Generators can (and do) have times of shortfall and over generation (especially wind powered and hydroelectric). That slack is covered by other generators on the grid.
 
Most of the slack is covered my france's nuclear power stations really.
But some very intresting 'green' power generation sites in the UK on the cards.
All with their own ecological nightmare attached unhelpfully :(

On a more practical level I would say most of us folder have got more powersaving kodus
than the masses - Takes no effort to turn the plugs off at night on your AV stuff.
and uses about the same as a good gpu 24/7 :)

An EV is my next big buy... after I get the beercan solar thermal back up and running now the sun is back
 
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Never turn anything off at the wall, me. :eek:

Though if there's an off button, I'll certainly use that.

My leccy bill shows the results too - though it's actually down on last year. Sadly the cold winter means I used twice as much gas, so ended up paying the same.
 
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