| 摘要 |
The present invention is a method and a system for tuning computer programs that run on parallel computer systems by using synthetic perturbations. This invention involves placing synthetic perturbations (20), e.g., time delays, into selected locations (12) of the code of a computer programm to be tuned. The impact of these time delays (16) on the overall performance of the computer program, as quantified by its run time, is then determined. By running different trials with different values selected (16) for the time delays, a set of resulting run times (32) is generated. Statistical analysis (36) is then performed on these results to identify the segments of program code that are most critical (40) in terms of affecting the performance of the program. The user can then optimize those code segments (44). |
