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线程时间分析以及fft函数

Other Parts Discussed in Thread: FFTLIB

程序实现将一个16k点的fft 分在8个核上算2k点。再后处理,想统计一下从8 个核 开始运算2k点的时间,应该怎么统计。还有在库函数 中,哪个fft的运算效率高一些呢?dsplib和fftlib.