Ultra-high performance communication with MPI and the Sun fire™ link interconnect
Proceedings of the 2002 ACM/IEEE conference on Supercomputing
Dynamic process management in an MPI setting
SPDP '95 Proceedings of the 7th IEEE Symposium on Parallel and Distributeed Processing
A network-failure-tolerant message-passing system for terascale clusters
International Journal of Parallel Programming
ATEC '96 Proceedings of the 1996 annual conference on USENIX Annual Technical Conference
High performance support of parallel virtual file system (PVFS2) over Quadrics
Proceedings of the 19th annual international conference on Supercomputing
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Open MPI is a project recently initiated to provide a fault-tolerant, multi-network capable implementation of MPI-2, based on experiences gained from FT-MPI, LA-MPI, LAM/MPI, and MVAPICH projects. Its initial communication architecture is layered on top of TCP/IP. In this paper, we have designed and implemented Open MPI point-to-point layer on top of a high-end interconnect, Quadrics/Elan4. The restriction of Quadrics static process model has been overcome to accommodate the requirement of MPI-2 dynamic process management. Quadrics Queued-based Direct Memory Access (QDMA) and Remote Direct Memory Access (RDMA) mechanisms have been integrated to form a low-overhead, high-performance transport layer. Lightweight asynchronous progress is made possible with a combination of Quadrics chained event and QDMA mechanisms. Experimental results indicate that the resulting point-to-point transport layer is able to achieve comparable performance to Quadrics native QDMA operations, from which it is derived. Our implementation provides an MPI-2 compliant message passing library over Quadrics/Elan4 with a performance comparable to MPICH-Quadrics.