METHOD AND DEVICE FOR MULTITHREAD TO ACCESS MULTIPLE COPIES

摘要

A method and a device for multithread to access multiple copies are provided. The method comprises: when multiple threads of a process are distributed to different nodes, a thread page directory table whose content is the same as that of a process page directory table of processes is created, and each thread page directory table comprises special entries for pointing to specific data and common entries except the special entries, in which each thread corresponds to a thread page directory table, the execution of each thread is based on the corresponding thread page directory table, and the specific data is the data with multiple copies at different nodes; for each thread, when each thread is dispatched and the special entries in the thread page directory table of the thread does not point to the specific data stored in the node where the thread exists, the special entries are modified to point to the specific data based on the physical addresses of the specific data. Based on the solution mentioned above, the threads distributed to different nodes can be enabled to access the data copy stored in the node where the thread exists, thus the system performance is improved.