Display of process-plan execution

A method is provided that includes receiving a plan model for a process including a plurality of tasks, and generating a layout including a network diagram (200) that expresses the plan model. The method also includes simulating execution of the plan model, and dynamically updating the network diagram (200) to reflect an actual task duration tracked for each task during the simulation. The network diagram (200) includes along a time-directed axis (202), a plurality of task nodes (604, 606) that express respective tasks, with each task node (604) being expressed as a first multi-dimensional shape having an outline with a dimension along the axis sized according to a task duration for a respective task. In the updated network diagram (200), then, each task node (1104, 1106) further includes a fill (816) in the same first multi-dimensional shape as the respective outline but with a dimension along the axis sized according to the actual task duration of the respective task.