Hitachi, Ltd.

Yoshiaki Tokita

Taihei Suzuki

Takashi Morita

Hirotoshi Shirasu

Shirou Tanabe

Yukihito Maejima

Keisuke Okajima

An I/O prescription table (I/O PTBL) is associated with a processing program module that is executed by a conventional sequential execution type processor. Each processing program module fetches the input data according to its associated I/O PTBL and stores the output data in the same table. An execution control program makes reference to the I/O PTBL associated with the processing program module, updates the designated I/O PTBL so as to indicate that the corresponding input data is prepared, and starts the processing program module associated with the I/O PTBL which is furnished with all of the necessary input data.

Method and system for data driven information processing

A multi-processor data processing system comprises, in addition to a main memory unit which is common to a plurality of processors, a queue buffer which is common to the processors to store intercommunicating information for the processors, whereby when each processor completes a process, information relating to the process is stored in the main memory unit and the first address of this information or the intercommunicating information is transmitted to the queue buffer from which any idle or vacant processor reads out the intercommunicating information. The queue buffer accompanies an intercommunicating information read/write control unit which controls the transmission and reception of intercommunicating information between the processors and the queue buffer. In this way, intercommunicating processing is accomplished without requiring any access to the main memory unit and without requiring the operation of an operating system for intercommunication. Thus, the multi-processor data processing system has a reduced burden on the main memory unit and the operating system and is efficient and economical.

Multi-processor data processing system

Growing community of inventors

Yokohama, Japan

Yoshiaki Tokita