POSH: Paris OpenSHMEM: A High-Performance OpenSHMEM Implementation for Shared Memory Systems

In this paper we present the design and implementation of POSH, an Open-Source implementation of the OpenSHMEM standard. We present a model for its communications, and prove some properties on the memory model defined in the OpenSHMEM specification. We present some performance measurements of the communication library featured by POSH and compare them with an existing one-sided communication library. POSH can be downloaded from \url{http://www.lipn.fr/~coti/POSH}. % 9 - 67Comment: This is an extended version (featuring the full proofs) of a paper accepted at ICCS'1

PLIERS: A Parallel Information Retrieval System Using MPI

The use of MPI in implementing algorithms for Parallel Information Retrieval Systems is outlined. We include descriptions on methods for Indexing, Search and Update of Inverted Indexes as well as a method for Information Filtering. In Indexing we describe both local build and distributed build methods. Our description of Document Search includes that for Term Weighting, Boolean, Proximity and Passage Retrieval Operations. Document Update issues are centred on how partitioning methods are supported. We describe the implementation of term selection algorithms for Information Filtering and finally work in progress is outlined

Final Report for Enhancing the MPI Programming Model for PetaScale Systems

This project performed research into enhancing the MPI programming model in two ways: developing improved algorithms and implementation strategies, tested and realized in the MPICH implementation, and exploring extensions to the MPI standard to better support PetaScale and ExaScale systems

Overhead Verification for Cryptographically Secured Transmission on the Grid

It is well known that the network protocols frequently used in Internet and Local Area Networks do not ensure the security level required for current distributed applications. This is even more crucial for the Grid environment. Therefore asymmetric cryptography algorithms have been applied in order to secure information transmitted over the network. The security level enforced by means of the algorithms is found sufficient, however it introduces additional transmission overhead. In this paper we describe experiments performed in order to evaluate transmission efficiency depending on the security level applied

Simple Orchestration Application Framework to Control "Burning Plasma Integrated Code"

We have developed the Simple Orchestration Application Framework (SOAF) on a grid infrastructure to control cooperative and multiple execution of simulation codes on remote computers from a client PC. SOAF enables researchers to generate a scenario of their cooperative and multiple executions by only describing a configuration file which includes the information of execution codes and file flows among them. SOAF does not need substantial modification of the simulation codes. We have applied SOAF to the "Burning Plasma Integrated Code" which consists of various plasma simulation codes. In order to predict and interpret the behavior of fusion burning plasma, it is necessary to cooperatively and concurrently execute various simulation codes to understand complex plasma phenomena with wide temporal and spatial ranges. Those codes exist on distributed heterogeneous computers located in different sites such as universities and institutes. By using SOAF, we succeeded to cooperatively and concurrently execute four plasma simulation codes without substantial modification as described in the configuration file