A computing system includes: a volatile memory configured to: store a debug assert flag mask including bits; cores, coupled to the volatile memory, configured to: detect an error in at least one of the cores, set at least one of the bits corresponding to the cores with the error detected, collect debug information for each of the cores with the error detected, collect operating information for each of the cores without the error detected, generate assert dump information based on compiling the debug information; and a nonvolatile memory, coupled to at least one of the cores, configured to: store the assert dump information, the operating information, configured to by at least one of the cores.