Example: adding a "pair" version of the Alltoall collective.
- - Implement it in a file called alltoall-pair.c in the src/smpi/colls folder. This file should include colls_private.h.
+ - Implement it in a file called alltoall-pair.c in the src/smpi/colls folder. This file should include colls_private.hpp.
- The name of the new algorithm function should be smpi_coll_tuned_alltoall_pair, with the same signature as MPI_Alltoall.
