Hi,
I was considering volunteering some of my machines for tiles at home, but the readme told me that it required up to a gigabyte of RAM. As Linux doesn't allow me to tell the OS to only run that program if I don't need the RAM for other stuff, that's just too much, so I can't participate. Then I got to thinking: 256x256 pixels for a tile is only very little. So why the lots of RAM? It seems that a bunch of tiles, 32x32 of them, are rendered at once. This would result in a 64 megapixel image, which at 4 bytes per pixel results in at least 256 Mbyte of required RAM. Would it be an idea to allow users to specify something like what order their tah client should work at? So I could specify: Zoom level 14. This means that instead of working on one level 12 image, I'll work on 16 level 12 images, hopefully cutting the memory requiremes by close to 16... Now from a server point-of-view, it's not desirable if different chunks get processed. So, instead of allowing different sizes to be downloaded, the client, configured for non-level-12 operation would then itself work on the different subtiles, instead of all at once... Secondly, I added the road where my brother lives, how long should it take to render that tile again? http://www.openstreetmap.com/?lat=52.017163&lon=4.362137&zoom=18&layers=B00FTF (there should now be a street going north-east from the oostsingel in the larger block across from the postbox. That street doesn't go all the way to the van miereveldlaan. The Yahoo images show the street and the houses there still being built, but they are finished now :-) It is an enormous motivation for people to actually see the results of their work. So if I don't see the results of my edit, I'll lose interest in OSM, and stop correcting the database.... Roger. -- ** [EMAIL PROTECTED] ** http://www.BitWizard.nl/ ** +31-15-2600998 ** ** Delftechpark 26 2628 XH Delft, The Netherlands. KVK: 27239233 ** *-- BitWizard writes Linux device drivers for any device you may have! --* Q: It doesn't work. A: Look buddy, doesn't work is an ambiguous statement. Does it sit on the couch all day? Is it unemployed? Please be specific! Define 'it' and what it isn't doing. --------- Adapted from lxrbot FAQ _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
