[mapguide-users] Re: CUDA?

[Zac Spitzer]

this will make a huge difference in tile generation

Meta Tiling Support
http://trac.osgeo.org/mapguide/wiki/MapGuideRfc90


On Thu, May 10, 2012 at 8:08 PM, Hans Milling <hm at geograf.dk> wrote:
> The reason I ask is because I have a "simple" map with 23 layers. All MapInfo
> TAB files. If I open all the 23 layers in a single map in MapInfo, zooping
> etc is quite fast. Also when reacing zoom level 1:250 it is extreamly fast
> (as one would expect). But with the MapGuide server tile generation I
> experience the opposite. When at zoom level 1:350000 the tiles are generated
> fast (I know less tiles are generated but the average speed of each tile)
> but at 1:250 each tiles takes 700 ms in average. I don't understand why the
> tile building is so slow.
> Next I tried to put all the MapInfo files into an SQL Server 2008 R2 Spacial
> database (using the EasyLoader). But the OGR provider still is a bit faster
> than the SQL Spacial provider it seems.
>
> My idea was, not to get rid of the tile cache, but remove the need to
> pregenerate all the tiles. If tiles could be generated on the fly almost as
> fast as a cache could deliver them, but still be cached once generated. That
> would be great.
>
> Even though you say the tile generation is all about memory troughput, i
> believe that a graphics card can still do a lot better than your average
> desktop/server. GPU's and their memory are optimized for paralel processing
> and they are a lot faster than your standard CPU and memory.
>
> Hans...
>
> --
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-- 
Zac Spitzer
Solution Architect / Director
Ennoble Consultancy Australia
http://www.ennoble.com.au
http://zacster.blogspot.com
+61 405 847 168