Mark Burton wrote:
Hi Folks,
I have recently gained access to a monster box containing 16 3GHz cores and 32 G of memory so I thought it would make an ideal machine to test a multi-threaded version of mkgmap.
The patch has received some testing using mapsource and I think I have removed the worst of the bugs but I would very much appreciate it if people could try it out and see if it causes any breakage.
Obviously, I would also like to know how well it performs.
As it has only been tested under Linux any reports from other platforms would be especially useful.
Using a patched r1033 on openSUSE_11.1 64bit with 4GB RAM I successfully compiled a map from todays great_britain.osm from Geofabrik. Command line is:- java -Xmx2048M -jar mkgmap.jar --latin1 --gmapsupp --route --region-name="Great Britain" --region-abbr="GBR" --net --code-page=1252 --country-name="UNITED KINGDOM" --country-abbr=UK --tdbfile --tdb-v4 --stylefile=./mystylefiles --description="Map of GB" 700000??.osm I have no actual timings for run time but system monitor showed both cores extensively used throughout. Cheers Paul