Changes between Version 26 and Version 27 of main_old
- Timestamp:
- 05/12/11 09:13:35 (13 years ago)
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main_old
v26 v27 6 6 7 7 === QCG Middleware === 8 In a nutshell, the !QosCosGrid middleware consists of two logical levels: grid domain and administrative domain. Grid-level services control, schedule and generally supervise the execution of end-users applications, which are spread between independent administrative domains. The administrative domain represents a single resource provider (e.g. HPC or datacenter) participating in a certain Grid or Cloud environment by sharing its computational resources, e.g. computing clusters, with both local and external end-users. The logical separation of administrative domains corresponds with the fact that they are possessed by different institutions or resource owners. Each institution contributes its resources for the benefit of the entire Grid or Cloud, while controlling its own administrative domain and own resource allocation/sharing policies 8 In a nutshell, the !QosCosGrid middleware consists of two logical levels: grid domain and administrative domain. Grid-level services control, schedule and generally supervise the execution of end-users applications, which are spread between independent administrative domains. The administrative domain represents a single resource provider (e.g. HPC or datacenter) participating in a certain Grid or Cloud environment by sharing its computational resources, e.g. computing clusters, with both local and external end-users. The logical separation of administrative domains corresponds with the fact that they are possessed by different institutions or resource owners. Each institution contributes its resources for the benefit of the entire Grid or Cloud, while controlling its own administrative domain and own resource allocation/sharing policies. 9 9 10 The !QosCosGrid framework is highly flexible as it is composed of pluggable components that can be easily modified to support different scheduling and access policies to better maximize a diversity of utility functions. Furthermore, the framework exploits novel algorithms for topology-aware co-allocations that are required by parallel programming and execution set-ups in production-level high-performance computing environments, such as the Message Passing Interfaces (MPI), !ProActive, or their hybrid extensions linking programming models like OpenMP or CUDA. 10 The key component of every administrative domain in !QosCosGrid is the QCG BES/AR service, which gives the 11 remote access to queuing systems resources. QCG BES/AR supports advance reservations, parallel execution environments - OpenMPI, !ProActive and MUSCLE with coordinators responsible for synchronization of cross-cluster executions and Data Movement services for managing input and output data. The another relevant service at the administrative domain is in charge of notification mechanism and it is called QCG Notification. These services are tightly integrated and connected to the Grid-level services. The critical service on this level is QCG Broker, that is a meta-scheduling framework controlling executions of applicaitons on the top of queuing systems via Smoa Computing services. !QosCosGrid architecture is depicted in the figure presented below. For more information see /Link do sekcji/ 11 12 12 13 [[Image(QCG-Architecture-v4.png, center, width=700px)]]
