Coordinated Co-allocator Model for Data Grid in Multi-sender Environment
Coordinated Co-allocator Model for Data Grid in Multi-sender Environment
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DOI：
10.1007/11948148_6
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
R. Bhuvaneswaran;Y. Katayama;N. Takahashi
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文献类型：
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作者：
R. Bhuvaneswaran;Y. Katayama;N. Takahashi
为了在网格环境中实现并行数据传输，我们提出了一种同时将一个数据块请求分配给多个站点的模型，称为协同分配。该模型由协同分配器、监控机制三部分组成。该联合分配方案很好地适应了相关站点高度不一致的网络性能。该方案首先从监控模块获取带宽参数来确定分区大小，然后将数据传输任务复制分配到服务器上。尽管到所考虑的服务器的链路断开或变为空闲的情况下，该方案被发现是容忍的。我们在框架中使用了Globus工具包，并利用了GridFTP的部分复制功能。我们将我们的方案与现有的方案进行了比较，结果表明，在数据传输的总体完成时间方面有了显着的改善。
We propose a model, which simultaneously allocates a data block request to the multiple sites, termed as co-allocation, to enable parallel data transfer in a grid environment. The model comprises of co-allocator, monitor and control mechanisms. The co-allocation scheme adapts well to the highly inconsistent network performances of the sites concerned. The scheme initially obtains the bandwidth parameter from the monitor module to fix the partition size and the data transfer tasks are allocated onto the servers in duplication. The scheme is found to be tolerant despite the situation that the link to servers under consideration is broken or become idle. We used Globus toolkit for our framework and utilized the partial copy feature of GridFTP. We compared our schemes with the existing schemes and the results show notable improvement in overall completion time of data transfer.