Design and Development of Application Software for the MPD Distributed Computing Infrastructure

Abstract

The Multi-Purpose Detector collaboration began using distributed computing for centralized MonteCarlo generation in mid-2019. The DIRAC Interware is used as a platform for the integration ofheterogeneous distributed computing resources. Since then, workflows of job submission, datatransfer, and storage have been designed, tested, and successfully applied. Moreover, the growth ofinterest in access to the computing system from users is observed. One way to provide such access forthe users is to allow them to directly submit jobs to DIRAC. However, direct access to the resourcesimposes a high responsibility on users and must be restricted. For this reason, another approach waschosen, i.e. to design and develop a dedicated application that collects requirements from users andstarts the required number of jobs. Such an approach entails additional effort: elaboration ofrequirements, application design and development. Nevertheless, it allows for greater control over theworkload submitted by other users, reducing possible failures and the inefficient usage of resources.