G - Physics – 06 – F
Patent
G - Physics
06
F
354/234
G06F 15/16 (2006.01) G06F 9/38 (2006.01) G06F 13/14 (2006.01) G06F 15/17 (2006.01)
Patent
CA 1286416
A METHOD AND APPARATUS FOR ARBITRATION AND SERIALIZATION IN A MULTIPROCESSOR SYSTEM ABSTRACT OF THE DISCLOSURE A method and apparatus for providing arbitration between and serialization of plural processors in a multiprocessor system comprising, in each processor, a delay network, a priority circuit, a REQUEST generator, an ORDER generator, a serialization program, an ACK generator and an ACK receiver. In operation, the delay network insures that simultaneously generated REQUESTS received from plural processors are received by the priority circuit at the same time. A processor awarded priority issues an ORDER to the other processors and thereafter drops its REQUEST to allow an award of priority to another processor. An ACK is received by the ORDER issuing processor from each processor when it executes the ORDER. The ORDER issuing processor then completes the task which gave rise to the ORDER. To conserve processing time, priority awards may be made before previously issued ORDERS are completed. Alternatively, REQUEST issuing processors can simply hold their REQUEST and thereby prevent interruption of instructions or groups of instructions.
545798
Begley Michael J.
Magee Kristin
Vahidsafa Ali
Amdahl Corporation
Gowling Lafleur Henderson Llp
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