Titlebook: Recent Advances in Parallel Virtual Machine and Message Passing Interface; 6th European PVM/MPI Jack Dongarra,Emilio Luque,Tomàs Margalef C

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FICE

Towards Portable Runtime Support for Irregular and Out-of-Core Computationsd functions for out-of-core data are implemented with capabilities provided by MPI-IO. The new library may be used in C, Fortran and Java programs. Results of performance tests for a generic irregular out-of-core program on HP S2000 are presented and possible further extensions are discussed

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Efficient Replay of PVM Programsrepetited execution. Detecting races in distributed computations requires implementation of a strongly consistent system of vector clocks. Therefore a system of vector clocks was adapted for a dynamic application model. Finally it presents the architecture of a tool supporting replay of PVM applications.

Bernstein-test

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Implementing MPI-2 Extended Collective Operationsdard on the MPI-1 collective operations. We expose the algorithms, key features and some performance results. The implementation was done on top of WMPI and honors the MPICH layering, therefore the algorithms can be easily incorporated into other MPICH based MPI implementations.

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Performance Issues of Distributed MPI Applications in a German Gigabit Testbed between the Research Centre Jülich and the GMD - National Research Center for Information Technology in Sankt Augustin. This contribution reports on those activities in the testbed that are related to metacomputing. It starts with a discussion of the IP connectivity of the supercomputers in the tes