#2683: Slab fails to compile without MPI

Reporter: Roland Haas Status: new Milestone: Version: Type: bug Priority: major Component: EinsteinToolkit thorn

Slab only optionally depends on MPI and the Kranc tutorial [http://kranccode.org/tutorial.html%5D(http://kranccode.org/tutorial.html) does use it without MPI (or Carpet for that matter). In 9ea25cd9 this ability was lost due to `MPI_Alltoallv` being limited to `int` variables for offsets and sizes thus not usable with the 64 bit code anymore.

Pull request [https://bitbucket.org/cactuscode/cactusnumerical/pull-requests/19/slab-suppo...) restores functionality to run without MPI and makes the Kranc tutorial work once more.

It is not really nice since it fudges the function prototype of the `MPI_Alltoallv` dummy function used in Slab.

-- Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2683/slab-fails-to-comp...