Information processing apparatus and control method
AssigneeFujitsu Limited
InventorRyuichi Nishiyama
Life of this patent
Estimating the term…
Abstract
In an information processing apparatus, a control unit receives operation instructions. Each time receiving an operation instruction, the control unit detects the number of operating circuits that are to operate in accordance with the received operation instruction, in a circuit group of circuits that operate in synchronization with a clock signal. In addition, each time receiving an operation instruction, the control unit determines whether power supply noise that is likely to cause a timing error in the circuit group will occur, on the basis of a result of comparing an increase in the number of operating circuits per prescribed time period with a threshold, and lowers the frequency of the clock signal when determining that the power supply noise will occur.
Claims6
A non-transitory computer-readable recording medium storing a computer program that causes a computer to perform a process comprising:
- receiving operation instructions;
- detecting, each time receiving one of the operation instructions, a number of operating circuits that are to operate in accordance with the received operation instruction, in a circuit group of circuits that operate in synchronization with a clock signal;
- determining, each time receiving the one of the operation instructions, whether an increase in the number of operating circuits per prescribed time period is greater than or equal to a threshold;
- and
- lowering a frequency of the clock signal upon determining that the increase in the number of operating circuits is greater than or equal to the threshold.
An information processing apparatus, comprising:
- a circuit group of circuits configured to operate in synchronization with a clock signal;
- a clock generation circuit configured to generate the clock signal;
- and
- a control unit configured to
- receive operation instructions,
- detect, each time receiving one of the operation instructions, a number of operating circuits that are to operate in accordance with the received operation instruction, in the circuit group,
- determine, each time receiving the one of the operation instructions, whether an increase in the number of operating circuits per prescribed time period is greater than or equal to a threshold, and
- cause the clock generation circuit to lower a frequency of the clock signal upon determining that the increase in the number of operating circuits is greater than or equal to the threshold.
A control method, comprising:
- receiving, by a control unit, operation instructions;
- detecting, by the control unit, each time receiving one of the operation instructions, a number of operating circuits that are to operate in accordance with the received operation instruction, in a circuit group of circuits that operate in synchronization with a clock signal;
- determining, by the control unit, each time receiving the one of the operation instructions, whether an increase in the number of operating circuits per prescribed time period is greater than or equal to a threshold;
- and
- lowering, by the control unit, a frequency of the clock signal upon determining that the increase in the number of operating circuits is greater than or equal to the threshold.
Dependencies are inferred from the claim text.