公开(公告)号：JPH0916531A

公开(公告)日：1997-01-17

申请号：JP2997096

申请日：1996-01-23

Applicant: TANDEM COMPUTERS INC

Inventor： REONAADO AARU FUISHIRAA ,  TOOMASU EMU KURAAKU

IPC: G06F9/54 ,  G06F9/46 ,  G06F11/14 ,  G06F11/20 ,  G06F15/16

Abstract: PROBLEM TO BE SOLVED: To provide a new system capable of efficiently transmitting/receiving data among plural processes under a fixed condition when much time is required for data copying as compared with the execution of processing and the data copying operation is not important for the security of failure tolerance. SOLUTION: In a parallel processing and fault tolerant type computer system, data are transmitted among plural processes in a single CPU 110 (142) by two methods. In the 1st method, data are copied in each transmission. In the 2nd method, data are transmitted through a shared memory queuing system without being copied. The 1st method is used for securing failure tolerance and linear extendability. The 2nd method minimizes time required for inter-process communication. Since the shared memory queuing system is used, the vertical and horizontal modules of a process executed in the same CPU 110 (142) are increased.