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多分层系统功能的垂直迁移是改善系统全局性能的有效手段。本文以ＦＦＴ算法固化为例讨论了多层次垂直迁移的各种方案，比较了它们的结果，给出了在ＶＡＸ１１／７８５上实现的全过程以及ＦＦＴ的关键操作──蝶形计算的ＭＩＣＲＯ２微语言程序。
Vertical migration of multi-tiered system functions is an effective way to improve the overall performance of the system. This paper takes FFT algorithm as an example to discuss the various schemes of multi-level vertical migration, compares their results, and presents the whole process realized on VAX11 / 785 and the key operation of FFT ── MICRO2 micro-language program.