The disclosed technology offers methods of updating a data cube of samples and a display on a client device with a processor. The method provides GUI clients to computer devices; receives initial reports of sample values organized by sampled computing device and sampled aspect of operations, and identified by group membership and super-group membership; receives, from the devices, samples that update reports of sampled aspects of operations; and pushes updated reports to the GUI clients. The GUI clients calculate and update group and super-group aggregate operational status; and display a hierarchical representation of the aggregate operational status of the super-groups and groups and of the operational status of the computing devices, based on the sample values, in real or near real time, as received samples reach the clients. The operator viewing the display of the hierarchical representation is notified of operational aspects that require close monitoring or immediate remedial attention.