Changes between Version 17 and Version 18 of main_old

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Timestamp:
04/28/11 14:17:35 (12 years ago)
Author:
bartek
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  • main_old

    v17 v18  
    2121 
    2222== QCG Libraries and Cross-cluster communication == 
    23 From a development perspective, the !QosCosGrid applications were grouped into two classes: (a) Java applications taking advantage of ProActive library as the parallelization technology, and (b) applications based on ANSI C or similar codes, which rely on the message passing paradigm. Based on these groups, QosCosGrid was designed to support two parallel programming and execution environments, namely: QCG-OpenMPI (aiming at C/C++ and Fortran parallel applications developers) and QCG-ProActive (aiming at Java parallel application developers).  
     23From a development perspective, the !QosCosGrid applications were grouped into two classes: (a) Java applications taking advantage of !ProActive library as the parallelization technology, and (b) applications based on ANSI C or similar codes, which rely on the message passing paradigm. Based on these groups, !QosCosGrid was designed to support two parallel programming and execution environments, namely: QCG-OpenMPI (aiming at C/C++ and Fortran parallel applications developers) and QCG-!ProActive (aiming at Java parallel application developers).  
    2424 
    25 Additional services were required in order to support the spawning of parallel application processes on co-allocated computational resources. The main reason for this was that standard deployment methodologies used in OpenMPI and ProActive relied on either RSH/SSH or specific local queuing functionalities. Both are limited to single-cluster runs (e.g., the SSH-based deployment methods are problematic if at least one cluster has worker nodes that have private IP addresses). Those services are called the coordinators and are implemented as Web services.  
     25Additional services were required in order to support the spawning of parallel application processes on co-allocated computational resources. The main reason for this was that standard deployment methodologies used in OpenMPI and !ProActive relied on either RSH/SSH or specific local queuing functionalities. Both are limited to single-cluster runs (e.g., the SSH-based deployment methods are problematic if at least one cluster has worker nodes that have private IP addresses). Those services are called the coordinators and are implemented as Web services.  
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