Some Weather Diary | forum.PhyChi.com

Some Weather Diary 1.0




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Antonio Noack

Hi dudes, only few will read this, but I need sb to tell, however I feel like nobody is listening at details:

I am working at weather prediction atm, where problems are the speed of PHP arrays, 4D matrices and evolution, next to saving all data on a MySQLDatabase because I don't have file writing access.

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Antonio Noack

The questioning of the database for the neighbors itself needs full ~600 milliseconds.
For my 3813 cities, the calculation for the prediction - including ~ 12k basic math operations for each one of them and each time iteration hopefully will be a solvable task for the time of the server...
I fear I've to keep few examples of weather over a long time, too, so I can evaluate my new networks on old data, too... season switch shouldn't happen.

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Antonio Noack

Just as an update: I coded the evolution-prediction thing completely from scratch again in C, which then was 500-1000 times faster than PHP (!!!)
I created the basic prediction which is somewhat better than the weather state kept and copied the result into PHP which now makes the predictions.
The result for 2h is visible for public at http://phychi.com/Wetter

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Antonio Noack

* oh it has to be written lowercase...
http://phychi.com/wetter/

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Antonio Noack

* oh it has to be written lowercase...

http://phychi.com/wetter/
edited

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Antonio Noack

OK… as you can see it doesn't work well; haven't tested it for a long time.

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