Abstract
Currently, SAAS (Software as a Service) solutions are usually provided for business, such as salesforce.com. Few work focus on the application software for high performance scientific computing. However, in the high performance cloud computing environment, traditional application software is not intrinsically service oriented. And the limitation of traditional software licenses is a bottleneck problem for large scale of dynamic users. To enable on-demand services for applications, we propose a solution: Application Software as a Service (ASAAS). It provides a web services portal, an on-demand software license service for the users. Application software is wrapped as web services on the basis of underlying computational resources. With a pay-for-use mode, there is no limitation for the licenses any more. The instant service rate, average job response time, and cost are analyzed for an evaluation. A case of implementation and the evaluation show that ASAAS can bring a much better effect than traditional mechanism.
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