Computer system with checkpoint and restart facility - includes output unit providing accounting information indicating charge payable as result of program execution and checkpoint and restart processes to accounting files.

摘要

The system includes a program execution unit. An output unit outputs accounting information to an accounting file, indicating a charge payable as a result of the program execution. Accounting information indicating a charge payable as a result of the checkpoint and a restart process is sent to a separate accounting file. This occurs when a checkpoint process for the user program is completed within the program. A determination unit determines in the event of access of a file which has been preserved as a checkpoint, whether the file has been saved. If the file has not been saved a saving unit appends the file to the checkpoint.