Digital project and platform for working with it

We substantiate the relevance of representing complex scientific digital projects in the form of a directed graph that combines input, output and intermediate data with data processing software into a single digital object. A method for manipulating such a representation in the form of a cloud Internet platform is proposed. The platform includes a central application server and allows to store both algorithms and data, provides means for communication between users, as well as accounting for their use of algorithms and data in solving applied problems. Work with algorithms and data takes place in an executable environment, which is loaded upon joining the platform either onto a user's machine or to a virtual machine in a cloud cluster. This environment allows users to solve applied tasks by creating, modifying and using new algorithms, or reusing the ones from a standard set. User interaction with the server and the repository is carried out through a web interface or a thick client on a local or virtual machine. A working prototype of the named platform is presented, which operates using supercomputer technologies and a desktop virtualization system. The prototype includes tools for creating software based on modular graph architecture and communication services for participants. It is able to execute computational graphs in a highperformance environment, provide registration of intellectual property in the algorithm gallery and carry out billing of its usage. We present examples of using the platform for geophysical research and for public administration.