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Mad-MPI Overview

Mad-MPI is a new light implementation of the MPI standard. This simple, straightforward proof-of-concept implementation is a subset of the MPI API, that allows MPI applications to benefit from the NewMadeleine communication engine. Mad-MPI is based on the point-to-point nonblocking posting (isend, irecv) and completion (wait, test) operations of MPI, these four operations being directly mapped to the equivalent operations of NewMadeleine.

Mad-MPI also implements some optimizations mechanisms for derived datatypes (see here). MPI derived datatypes deal with noncontiguous memory locations. The advanced optimizations of NewMadeleine allowing to reorder packets lead to a significant gain when sending and receiving data based on derived datatypes.

Performances

• Nightly tests

• PingPong
• Derived datatypes
• Aggregation of small messages
• Extended strategy
• Intel MPI Benchmarks
• NetPIPE Benchmarks
• NAS Parallel Benchmarks

Publications about Mad-MPI

• List of papers related to Mad-MPI
• Mad-MPI API documentation

Contact

For any questions regarding Mad-MPI, please contact Alexandre Denis.

Alexandre.Denis@inria.fr