Titlebook: Recent Advances in Parallel Virtual Machine and Message Passing Interface; 12th European PVM/MP Beniamino Martino,Dieter Kranzlmüller,Jack

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Implementing MPI-IO Shared File Pointers Without File System Supports. These targets vary widely in their capabilities, and in some cases additional effort is needed within ROMIO to support all MPI-IO semantics. The MPI-2 standard defines a class of file access routines that use a .. These routines require communication internal to the MPI-IO implementation in order

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Hint Controlled Distribution with Parallel File Systemsd quantitative characteristics of the requested I/O-accesses. It also depends on the corresponding mechanisms and policies being used at the parallel file system level. This paper presents the motivation and design of a set of MPI-IO-hints. These hints are used to select the distribution function wi

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Implementing Byte-Range Locks Using MPI One-Sided Communicationn which multiple processes of a parallel program need to acquire exclusive access to a range of bytes. One application of this algorithm is for implementing MPI-IO’s atomic-access mode in the absence of atomicity guarantees from the underlying file system. Another application is for implementing dat

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Some Improvements to a Parallel Decomposition Technique for Training Support Vector Machinesent projection scheme. The effectiveness of the proposed improvements is evaluated, both in terms of execution time and relative speedup, by solving large-scale benchmark problems on a parallel architecture.

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An Optimal Broadcast Algorithm Adapted to SMP Clustersry. On a 32-node dual-processor AMD cluster with Myrinet interconnect, improvements of a factor of 1.5 over for instance a pipelined binary tree algorithm has been achieved, both for the case with one and with two MPI processes per node.

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Scalable Fault Tolerant MPI: Extending the Recovery Algorithmeriments with new recovery algorithms that are aimed at being both scalable and latency tolerant. Our conclusions shows that the use of both topology aware collective communication and distributed consensus algorithms together produce the best results.

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Implementing MPI-IO Shared File Pointers Without File System Supportent this concept without requiring any features from the underlying file system. We then demonstrate through a simulation that our algorithm adds reasonable overhead for independent accesses and very small overhead for collective accesses.