| 摘要 |
<p>PROBLEM TO BE SOLVED: To flexibly change a ratio of frequency of a memory access request from a CPU core for OS to a memory access request from a general-purpose CPU core.SOLUTION: An arithmetic processing unit 1 includes: an arithmetic processing part for OS for executing an instruction included in an operating system; a plurality of general-purpose arithmetic processing parts; a shared cache part 20 having a shared cache memory 24, a cache control part 120, a request selection circuit 100 and a data buffer 28 for temporarily storing data corresponding to a memory access request; and a memory access control part 27. The shared cache part includes a memory access band control register 110, in which one or both of a first set value having an input reference of the memory access request from the arithmetic processing part for OS by the request selection circuit and a second set value for setting the capacity of a region where data corresponding to the memory access request from the arithmetic processing part for OS are stored in the data buffer, are set.</p> |
