Changes between Version 12 and Version 13 of main_old

04/28/11 13:40:44 (12 years ago)



  • main_old

    v12 v13  
    1212QCG BES/AR (the successor of the OpenDSP project) is an open architecture implementation of SOAP Web service for multi-user access and policy-based job control routines by various queuing and batch systems managing local computational resources. This key service is using Distributed Resource Management Application API (DRMAA) to communicate with the underlying queuing systems. QCG BES/AR has been designed to support a variety of plugins and modules for external communication as well as to handle a large number of concurrent requests from external clients and services. Consequently, it can be used and integrated with various authentication, authorization and accounting services or to extend capabilities of existing e-infrastructures based on Unicore, gLite, Globus Toolkit, and others. QCG BES/AR service is compliant with the OGF HPC Basic Profile specification, which serves as a profile over Open Grid Forum standards like JSDL and OGSA Basic Execution Service. In addition, it offers remote interfaces for advance reservation management, and supports basic file transfer mechanisms. QCG BES/AR was successfully tested with the following queuing systems: Sun Grid Engine (SGE), Platform LSF, !Torque/Maui, PBS Pro, Condor, Apple !XGrid and !LoadLeveler. Therefore, as a crucial component in !QosCosGrid, it can be easily set up on the majority of computing clusters and supercomputers running the aforementioned queuing systems. Currently, advance reservation capabilities in QCG BES/AR are exposed for SGE, Platform LSF and Maui (a scheduler that is typically used in conjunction with Torque). Moreover, generic extensions for advance reservation have been proposed for the next DRMAA standard release.  
     14== QCG Notification == 
     15QCG Notification is an open-source implementation of the family of WS-Notification standards (version 1.3). In the context of !QosCosGrid, it is used to extend features provided by QCG BES/AR by adding standards-based synchronous and asynchronous notification features. QCG Notification supports the topic-based publish/subscribe pattern for asynchronous message exchange among Web services and other entities, in particular services or clients that want to be integrated with !QosCosGrid. The main part of QCG Notification is based on a highly efficient, extended version of the !NotificationBroker, managing all items participating in notification events. Today, QCG Notification offers sophisticated notification capabilities, e.g., topic and message content notification filtering, pull-and-push styles of transporting messages. QCG Notification has been integrated with a number of communication protocols as well as various Web services security mechanisms. The modular architecture of QCG Notification makes it relatively straightforward to develop new extensions and plugins to meet new requirements.