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# HEAppE Middleware
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*High-End Application Execution Middleware* former *HPC as a Service Middleware*
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*HPC as a Service* is a well known term in the area of high performance computing. It enables users to access an HPC infrastructure without a need to buy and manage their own physical servers or data center infrastructure. Through this service small and medium enterprises (SMEs) can take advantage of the technology without an upfront investment in the hardware. This approach further lowers the entry barrier for users and SMEs who are interested in utilizing massive parallel computers but often do not have the necessary level of expertise in this area.
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*HPC-as-a-Service* is a well known term in the area of high performance computing. It enables users to access an HPC infrastructure without a need to buy and manage their own physical servers or data center infrastructure. Through this service small and medium enterprises (SMEs) can take advantage of the technology without an upfront investment in the hardware. This approach further lowers the entry barrier for users and SMEs who are interested in utilizing massive parallel computers but often do not have the necessary level of expertise in this area.
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To provide this simple and intuitive access to the supercomputing infrastructure an in-house application framework called *HEAppE* has been developed. This framework is utilizing a mid-layer principle, in software terminology also known as middleware. Middleware manages and provides information about submitted and running jobs and their data between the client application and the HPC infrastructure. *HEAppE* is able to submit required computation or simulation on HPC infrastructure, monitor the progress and notify the user should the need arise. It provides necessary functions for job management, monitoring and reporting, user authentication and authorization, file transfer, encryption, and various notification mechanisms.
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