Multi-Domain-Clusters with Open MPI and IPv6.

Abstract

Connecting several clusters to perform distributed high-performance computing requires message passing spanning heterogeneous network structures. One problem is that private IPv4 addresses inside clusters, although common and suitable for internal communication, preclude end-to-end connectivity. To establish multi-cluster message passing in such a context, we already proposed and implemented MPI over IPv6. In this article, we summarise our previous work on this topic and give in detail report of Open MPI’s IPv6 support.