1. Apparatus for booting a complete multi-processor system having individual processors, individual processor local memory, and a global memory, comprising: means for distributing a common power on signal to each processor; means for individually starting each processor responsive to the power on signal; means for synchronizing any steps which individually start each processor to a master clock; means for consistently selecting at least one processor to test both the global memory and such selected processor's local memory; and means for the selected processor to test the global memory in synchronism with the master clock.