Core resource allocation method and apparatus and multi-core system

Abstract

The present invention provides a method and an apparatus for allocating a core resource, and a many-core system, so as to allocate a core resource in a many-core platform. The method comprises: obtaining a quantity of idle cores required by a user process; finding at least two dispersed core subareas meeting the quantity request, each core subarea being a set of one or more cores and all cores in each core subarea being idle cores; forming a continuous core subarea by using the at least two dispersed core subareas; and allocating the formed continuous core subarea to the user process. In this manner, process interaction can be directly performed between different cores in the continuous core subarea allocated to the user process, and the efficiency of communication between processes is improved; in addition, waste of a core resource is effectively avoided, and the whole utilization rate and the parallel processing capability of a processor are improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a nuclear resource allocation method, device and many-core system. Background technique [0002] With the continuous development of computer technology, the processor has entered the multi-core / many-core era, increasing the number of schedulable cores in the computer system, assigning multiple threads in the same process to different cores to run in parallel, so that the multi-core can cooperate in parallel to complete specific tasks. In order to improve the utilization efficiency of multi-core / many-core processors and reduce application competition for core resources, cores can be physically partitioned to form multiple domains (representing core partitions). Each domain can contain multiple The cores of different domains can provide core resource sets of different domains to different applications to alleviate resource competition. [0003] In general, after co...

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Problems solved by technology

[0009] After core resource scheduling, different threads in the same process may be assigned to run on scattered cores that are far away. When information interaction between threads is required, it may have to pass through multiple cores that are running other tasks, resulting in Communication conflicts between threads, greatly reducing communication efficiency

In addition, the communication between threads can only be carried out after the core running other tasks is idle, which will also lead to low communication efficiency.

[0010] In addition, this method also lacks global and unified management of cores, which will generate a large number of scattered cores, resulting in the failure to allocate core resource partitions containing fewer core resources, and unable to use each core to respond to applications, resulting in core failures. The waste of resources affects the parallel processing capability of multi-core / many-core processors

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