MPI_Alltoall
^^^^^^^^^^^^
-Most of these are best described in `STAR-MPI's white paper <https://www.cs.fsu.edu/~xyuan/paper/06ics.pdf>`_.
+Most of these are best described in `STAR-MPI's white paper <https://doi.org/10.1145/1183401.1183431>`_.
- default: naive one, by default
- ompi: use openmpi selector for the alltoall operations