Information processing apparatus, control method for the same, and storage medium

A control method for an information processing apparatus including a wide IO memory device stacked over an SoC die that includes a CPU, the control method comprising steps of:

• upon instruction of execution of a function by a functional module out of a plurality of functional modules that each execute a separate function, specifying one or more available memory channels based on a status of use of a plurality of memory channels corresponding to a plurality of memories included in the wide IO memory device;
• for each of a plurality of memory channel groups composed of possible combinations of the memory channels specified by the specifying unit, evaluating power consumption of the wide IO memory device in a case where the memory channel group is used at an operation voltage and an operation frequency that correspond to a number of memory channels in the memory channel group and a data transfer rate needed for execution of the function;
• and
• selecting, out of the plurality of memory channel groups, a memory channel group for which power consumption of the wide IO memory device is lowest, as a memory channel group to be used by the functional module corresponding to the function.

A computer-readable storage medium storing a computer program for causing a computer to execute steps of a control method for an information processing apparatus including a wide IO memory device stacked over an SoC die that includes a CPU, the control method comprising steps of:

• upon instruction of execution of a function by a functional module out of a plurality of functional modules that each execute a separate function, specifying one or more available memory channels based on a status of use of a plurality of memory channels corresponding to a plurality of memories included in the wide IO memory device;
• for each of a plurality of memory channel groups composed of possible combinations of the memory channels specified by the specifying unit, evaluating power consumption of the wide IO memory device in a case where the memory channel group is used at an operation voltage and an operation frequency that correspond to a number of memory channels in the memory channel group and a data transfer rate needed for execution of the function;
• and
• selecting, out of the plurality of memory channel groups, a memory channel group for which power consumption of the wide IO memory device is lowest, as a memory channel group to be used by the functional module corresponding to the function.