[Routing] Fellow mappers, , , I have the pleasure to announce the initial release of a high-perfomance, routing backend

Marcus Wolschon Marcus at Wolschon.biz
Sun Jul 11 12:19:20 BST 2010


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Am 11.07.2010 13:03, schrieb Dennis Luxen:
>
> Yes, you are right. On a mobile device you want to avoid random
> accesses to the data structure, because RAM is scarce and I/O is
> pretty expensive. The good news is that it is perfectly possible to
> rearrange the data structures in a way that only a handful of I/Os
> are necessary to compute a route.

You would you avoid random IO?
On a flash-chip random IO is as cheap as
linear IO and not much slower then RAM
access. (both chips being on the same
memory-bus and no caching or speculative
reading in an ARM CPU)

Marcus
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