On Sun, 2009-11-01 at 19:02 -0500, John Mitchell wrote:
> One thing to try is to edit the script and set:
>
> NUM_THREADS = 1
>
> Making the NUM_THREADS = 1 seem to work now the script appears to be
> running through all the requested zoom levels.
>
> THANKS!!!!!!!
>
> Since you asked:
>
> OS: Microsoft Windows Server 2003
> Standard X64 Edition
> Service Pack 2
>
> Computer:
> AMD Opteron (tm) Processor 252
> 2.59 GHZ, 3.93 GB of RAM
>
> Mapnik 0_6_1
>
> Is NUM_THREADS = 1 the optimum value for my OS, computer and Mapnik
> version? The NUM_THREADS = 4 was what was set originally within
> generate_tiles.py and caused it to stop after a couple minutes of tile
> generation.
Using multiple threads has a performance advantage when you have
multiple cores. Unfortunately it can also trigger bugs or highlight
configuration issues in software. It can be tricky to figure out exactly
where the problem is.
Are you using the pre-built win32 binaries from mapnik.org?
Jon
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