Information processing apparatus, power saving transition program, and power saving transition method

A non-transitory computer-readable storage medium storing therein a power saving transition program for causing an information processing apparatus, which includes a plurality of computation nodes each having a CPU that executes an assigned job, a cooler that cools a refrigerant in a conduit in which the refrigerant that cools the CPU of each of the plurality of computation nodes circulates, and a control node to which the plurality of computation nodes and the cooler are connected, to execute a process comprising:

• assigning a job to the plurality of computation nodes;
• decreasing a cooling power of the cooler by a predetermined extent after execution of the job by the plurality of computation nodes to which the job is assigned is ended;
• and
• causing the CPU of each of the plurality of computation nodes in which the execution of the job is ended to transition from a non-power saving mode to a power saving mode sequentially at a predetermined time interval when a temperature of the refrigerant is equal to or more than a threshold value, and stopping a process of causing the CPU to transition to the power saving mode while the temperature of the refrigerant is less than the threshold value.

A power saving transition method comprising:

• causing an information processing apparatus, which includes a plurality of computation nodes each having a CPU that executes an assigned job, a cooler that cools a refrigerant in a conduit in which the refrigerant that cools the CPU of each of the plurality of computation nodes circulates, and a control node to which the plurality of computation nodes and the cooler are connected, to execute a process comprising:
• assigning a job to the plurality of computation nodes;
• decreasing a cooling power of the cooler by a predetermined extent after execution of the job by the plurality of computation nodes to which the job is assigned is ended;
• and
• causing the CPU of each of the plurality of computation nodes in which the execution of the job is ended to transition from a non-power saving mode to a power saving mode sequentially at a predetermined time interval when a temperature of the refrigerant is equal to or more than a threshold value, and stopping a process of causing the CPU to transition to the power saving mode while the temperature of the refrigerant is less than the threshold value.