Method of interprocessor data transfer using a network, virtual

Details Method of interprocessor data transfer using a network, virtual Method of interprocessor data transfer using a network, virtual

1996-11-27

1999-11-02

Cabeca, John W.

Electrical computers and digital processing systems: memory

Address formation

Address mapping

707204, 3952003, G06F 1200

Patent

active

059788941

ABSTRACT:
To realize interprocessor data transfer with the data receive area not fixed in the real memory and with less overhead for synchronization, the send node sends to the destination node, data, a virtual address of a receive area, an address of a receive control flag, a comparison value, and a comparison method. Network adaptor in the destination node judges whether the transfer condition is fulfilled, based on the comparison value, the comparison method and the semaphore in the receive control flag designated by the receive control flag address. Network adaptor further detects whether the receive area of the virtual address is in the main storage, based on the virtual address and the address translation table. The send data is stored in the receive buffer provided in the area for OS, when the above-mentioned condition is not fulfilled or the receive area is not in the main storage. Either when the destination node program issues a specific system call or when the program issues a reading instruction to the data in the receive area and a page fault is generated, OS moves the send data from the receive buffer to the receive area.

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"Architectural Support in the PUT/GET Interferface for Parallelizing Compiler and Parallel Programs," Proceedings of Parallel processing symposium JSPP'94, pp. 233-240, May, 1994.

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