[GraphHopper] Concurrent CHs creation

[Jan Torben Heuer]

Hi everybody,

Now that we can have multiple CHs for one base graph: Could I create CHs in parallel? I have sufficient idle cores. But is it possible, save and performant?

I currently use a simple loop:

for(Weighting w : weightings) {
   PrepareContractionHierarchies pch = // create CH
   pch.doWork();
   pch.close();
}

Jan