Version 12 (modified by bartek, 9 years ago) (diff)

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QCG Infrastructure Components

The QosCosGrid stack consists of a set of components playing different roles in a grid/cloud computing. On this page we present general description of main QosCosGrid components as well as description of basic relations between those in a typical QosCosGrid scenario. If you need more detailed information about functionality as well as configuration and installation procedures of particular QCG components follow links presented in the table:

Component Main function
 QCG-Computing Basic Execution Service (BES) with Advanced Reservation Support
 QCG-Notification Notification capabilities based on brokered version of OASIS WS-Notification standard
 QCG-Broker Resource Management and Brokering service
 QCG-OpenMPI Extended version of OpenMPI library supporting cross-cluster job execution
 QCG-Core Common library for QosCosGrid elements
 QCG-Tools Various elements extending the QosCosGrid functionality

QCG-Computing

QCG-Computing (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 in QosCosGrid is using Distributed Resource Management Application API (DRMAA) to communicate with the underlying queuing systems. QCG-Computing 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-Computing 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-Computing 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-Computing 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.

For more information see  QCG-Computing Home Page

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