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Created by: nschloe

The output of

#include <Teuchos_DefaultComm.hpp>
#include <Teuchos_VerboseObject.hpp>
#include <Tpetra_Map.hpp>

int main ( int argc, char *argv[] )
{
  Teuchos::GlobalMPISession session(&argc, &argv, NULL);
  auto comm = Teuchos::DefaultComm<int>::getComm();

  Tpetra::Map<int,int> map(23, 0, comm);

  auto out = Teuchos::VerboseObjectBase::getDefaultOStream();
  map.describe(*out, Teuchos::VERB_EXTREME);

  return EXIT_SUCCESS;
}

when run on two procs is

$ make && mpiexec -n 2 ./tpetra-test 
 Process 0:
  My number of entries: 12
  My minimum global index: 0
  My maximum global index: 11
  My global indices: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11]

The same goes for vectors, probably other types.