Accounting apparatus and method for SMT processor

An accounting apparatus for a user program executed on an SMT processor, comprising:

• a resource state information acquisition unit for collecting the resource state information regarding the utilization state of hardware resources for the SMT processor that is executing each process of the user program in a logical processor and storing it in a resource state information storage unit;
• a CPU use time acquisition unit for collecting a CPU use time during which the process of the user program uses the logical processor, and storing it in a CPU use time storage unit;
• and
• an accounting calculation unit for determining whether each process of the user program is in a conflict state where the process is executing in another logical processor or a non-conflict state other than the conflict state, employing the resource state information of the each process read from the resource state information acquisition unit, distinguishing the CPU use time read from the CPU use time storage unit into the CPU use time in the conflict state and the CPU use time in the non-conflict state, and calculating the accounting amount distinctively for the CPU use time in the conflict state and the CPU use time in the non-conflict state, after the end of executing the process of the user program.

An accounting method for a user program executed on an SMT processor in a computer, comprising:

• a conflict determination process of determining a conflict state where a process is executing in another logical processor or a non-conflict state other than the conflict state, and setting either the conflict state or the non-conflict state as the determination result in a conflict state storage unit, when a process of the user program starts to be executed in a logical processor;
• a CPU use time acquisition process of collecting the time during which the process of the user program uses the logical processor, and storing distinctively a conflict CPU use time on execution in the conflict state and a non-conflict CPU use time on execution in the non-conflict state in a CPU use time storage unit by referring to the conflict state storage unit;
• and
• an accounting calculation process of calculating the accounting amount distinctively for execution of the user program in the conflict state and execution of the user program in the non-conflict state, based on the conflict CPU use time and the non-conflict CPU use time read from the CPU use time storage unit, after execution of the process of the user program is ended.

An accounting method for a user program executed on an SMT processor in a computer, comprising:

• a resource state information acquisition process of collecting the resource state information regarding the utilization state of hardware resources for the SMT processor that is executing each process of the user program in a logical processor and storing it in a resource state information storage unit;
• a CPU use time acquisition process of collecting a CPU use time during which the process of the user program uses the logical processor, and storing it in a CPU use time storage unit;
• and
• an accounting calculation process of determining whether each process of the user program is in a conflict state where the process is executing in another logical processor or a non-conflict state other than the conflict state, employing the resource state information of the each process read from the resource state information acquisition unit, after the end of executing the process of the user program, distinguishing the CPU use time read from the CPU use time storage unit into the CPU use time in the conflict state and the CPU use time in the non-conflict state, and calculating the accounting amount distinctively for the CPU use time in the conflict state and the CPU use time in the non-conflict state.