1. A system to operate a plurality of boot software modules of a task in a plurality of parallel processing threads, comprising: a plurality of processors to operate the plurality of boot software modules of the task in the plurality of parallel processing threads; memory operably coupled to the plurality of processors to store the plurality of boot software modules; and an exception handler implemented in software to be operated by one or more of the plurality of processors to sequence operation of the boot software modules among the processing threads, that includes postponement of operation of a first of the plurality of boot software modules in a first of the processing threads until a determination that the first boot software module is not deemed in operation, wherein the first boot software module is deemed in operation while itself in operation or while awaiting completion of operation of any other boot software module called by the first boot software module; wherein the exception handler is to perform the determination in response to an inter-module function call of the first boot software module by a second of the plurality of boot software modules in operation in the first processing thread; wherein the plurality of boot software modules have associated statuses configured to cause the inter-module function call to trigger a page fault.