LiMIC: Support for High-Performance MPI Intra-node Communication on Linux Cluster
ICPP '05 Proceedings of the 2005 International Conference on Parallel Processing
Design and Evaluation of Nemesis, a Scalable, Low-Latency, Message-Passing Communication Subsystem
CCGRID '06 Proceedings of the Sixth IEEE International Symposium on Cluster Computing and the Grid
Data Transfers between Processes in an SMP System: Performance Study and Application to MPI
ICPP '06 Proceedings of the 2006 International Conference on Parallel Processing
Implementation and shared-memory evaluation of MPICH2 over the nemesis communication subsystem
EuroPVM/MPI'06 Proceedings of the 13th European PVM/MPI User's Group conference on Recent advances in parallel virtual machine and message passing interface
An evaluation of open MPI's matching transport layer on the Cray XT
PVM/MPI'07 Proceedings of the 14th European conference on Recent Advances in Parallel Virtual Machine and Message Passing Interface
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Recently the Catamount lightweight kernel was extended to support direct access shared memory between processes running on the same compute node. This extension, called SMARTMAP, allows each process read/write access to another process' memory by extending the virtual address mapping. Simple virtual address bit manipulation can be used to access the same virtual address in a different process' address space. This paper describes a prototype implementation of MPI that uses SMARTMAP for intra-node message passing. SMARTMAP has several advantages over POSIX shared memory techniques for implementing MPI. We present performance results comparing MPI using SMARTMAP to the existing MPI transport layer on a quad-core Cray XT platform.