Processing apparatus and device control unit

A processing apparatus including a plurality of task-processing devices each capable of executing a task of one kind or tasks of two or more kinds, comprising:

• a calculation control unit;
• and
• a device control unit configured to cause the task-processing devices to perform tasks of at least one kind in parallel in accordance with control performed by the calculation control unit,
• wherein the calculation control unit generates a task group for causing the task-processing devices to execute pieces of processing and sends the task group to the device control unit,
• the device control unit sends a command for starting task processing to each of the task-processing devices in accordance with the task group generated by the calculation control unit,
• the task-processing devices each execute a task issued from the device control unit, and when the task is complete, each provide a notification that the task is complete to the device control unit, and
• the device control unit provides, on the basis of notifications provided from the task-processing devices in the case in which all tasks included in the task group are complete, a notification that the task group is complete to the calculation control unit.