Patent ID: 6192391
Filing Date: 2001-02-20
Classification: G06F

Abstract:
A process stop method for a distributed memory multi-processor system that includes a plurality of nodes interconnected into a network, each of said nodes being provided with a thread for parallel processing, wherein each of said nodes has a management process to manage its own thread to engage in parallel processing, the method comprising the steps of:when a checkpoint is requested in the parallel processing as an external command, requesting, by the management process of a node whose node number signifies a highest ranking node, a stop from a thread of the highest ranking node;confirming that the thread of the highest ranking node has stopped;after confirming that the thread of the highest ranking node has stopped, delivering a stop request to the management process of a next highest ranking node with respect to the highest ranking node; anddelivering, by the management process of a given node, a stop request to a thread of the given node and another stop request to the management process of a node whose node number is next highest in ranking with respect to the given node, and repeating the process sequentially in an ascending order until all of said nodes involved in the parallel processing make a stop.