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4.6.1 Cray: SV1

On craSHi in Kiel (a ``CRAY SV1 20-32768 SN9542'', now out of service) CO5BOLD could use all 4 processors per board. The new configure script still includes a branch for this system even if has never been tested on that machine.

In some cases the non-default versions of loops in the CO5BOLD code vectorize better and are preferred over the standard ones: