Center for Computing Research
Portals is a message passing interface intended to allow scalable, high-performance network communication between nodes of a parallel computing system. Portals is designed to operate on scales ranging from a small number of commodity desktops connected via Ethernet to massively parallel platforms connected with custom designed networks.
Portals attempts to provide a cohesive set of building blocks with which a wide variety of upper layer protocols (such as MPI, SHMEM, or UPC) may be built, while maintaining high performance and scalability. Many interfaces today either provide a simple mapping to hardware which may not be conducive to building upper layer protocols (InfiniBand/Open Fabrics Enterprise Distribution) or which are only a good fit for a subset of upper layer protocols (PSM, UCX).
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