A Parallel Operating System for The Reconfigurable Parallele Processor -Process Management and Memory Management-

A reconfigurable parallel processor under development at Kyushu University is a MIMD-type multipurpose multiprocessor system. This system can be tailored to a broad range of applications. Its operating system under development considers it as a tightly coupled multiprocessor. Its kernel is based on the message oriented method to implement data-parallel processing. The operating system provides users with functions of the light weight process (thread) as a parallel processing model for tightly coupled multiprocessor system. The overhead of the thread switching can be reduced by our scheduling schedule where processors are allocated and deallocated to each process. The spin lock mechanism with time-out facility is employed to realize more flexible scheduling than coscheduling. We evaluate two methods where address mapping table is copied and it is not copied. As a result, the latter is employed. We propose a method of lazy ceation of stack to have fast access to a stack