Implementing distributed shared memory based on DCE

The Distributed Computing Environment (DCE) software of the Open Software Foundation o ers solutions for security problems and for shared le management in heterogeneous computer networks. It allows distributed programming by remote procedure calls and parallel programming by threads. Distributed shared memory in a computer network pretends a globally shared address space among networked computers. By introducing distributed shared memory into DCE we raise the concept of threads to a higher level of concurrency | threads are spread over several machines. POSIX 1003.4a-compliant multithreaded programs are automatically transformed to execute on a computer network running DCE. Reprogramming is not necessary. The translator algorithms are concealed behind a precompiler, and a runtime system on top of DCE realizes the globally shared address space and distributes threads among di erent machines.