The grid-backend of g-FLUA2H. The user interface of the web application allows input of data which then undergoes a series of steps as part of the data processing and analysis workflow, built on top of the gUSE/WS-PGRADE framework. Depending on the computing load, the framework manages distribution of jobs. Compute intensive executions are handled by sending jobs to a computing cluster, such as HPC/Grid; in this case to the Academic Grid Malaysia Infrastructure (http://academicgrid.my), which is based on the EMI middleware (http://www.eu-emi.eu). Compute less-intensive executions are sent to the distributed Desktop Grid (http://desktopgridfederation.org), based on BOINC setup (https://boinc.berkeley.edu). Abbreviations: HPC, high performance computing; gUSE/WS-PGRADE, Grid and cloud User Support Environment/Web Services Parallel Grid Runtime and Developer Environment; EMI, European Middleware Initiative; BOINC, Berkeley Open Infrastructure for Network Computing.