New Fault Tolerance and Performance Evaluator (NFTAPE)

Target Node

All Target Nodes together constitute the system-under-test. Each Target Node maintains a set of light-weight fault injectors (LWFIs) and light-weight triggers, and a process manager daemon, as well as components of the target system.

The Process Manager ("Proc. Mgr." in the diagram) is a daemon process that launches local processes and facilitates communication between those processes and the Control Host. By encapsulating communication and control responsibilities in a single daemon for each Target Node, the various functions involved in fault injection and evaluation can be broken out into separate executable components. This provides means for the architectural separability of LWFIs, triggers, and workload components, thus establishing a baseline for the generic composibility of injection execution.