Abstract: Practice shows that in most cases the effective speed of a massively parallel processing system（MPP） is much lower than its peak speed,often reaching only about 25% of the latter.At present MPP is used to perform high\|performance scientific computation in many research fields,so the above\|mentioned problem has been followed with interest by experts both at home and abroad.Here discussed is the cache missing latency problem,that is one of the main factors influencing MPP systems effective speed. Taking Exemplar SPP1200/XA for example, some programming methods for increasing the systems application properties are tested and summarized in discussing both the hierarchical algorithm and localizability.