A control apparatus includes: an external apparatus control unit configured to load data necessary for execution of calculation processing onto an external memory included by an external apparatus and also cause the external apparatus to execute the calculation processing; a memory access unit configured to convert a logical address used in the calculation processing into a physical address and also access the external memory on the basis of the converted physical address; and an external memory virtualizing unit configured to virtualize the external memory by associating the converted physical address with an external memory physical address that is a physical address in the external memory.