Various examples are directed to systems and methods for managing a grid computing system. A grid computing management system may be in communication with a grid consumer device and in communication with a plurality of user devices. The grid computing management system may receive, via a computer network and from the grid consumer device, first task description data describing a first task to be performed using the plurality of user devices. The grid computing management system may identify a plurality of task units for executing the first task using the task description data and generate a plurality of task unit modules including a first task unit module that, when executed by a first user device of the plurality of user devices, causes the first user device to execute a first task unit of the plurality of task units. The grid computing management system may receive a ready message from the first user device and send the first task unit module to the first user device.