我看到一个文档中说如下图的性能参数,我想问问如果用6670 4核+FFTC 性能参数又是多少呢?比如说64K大小的数据用FFTC的计算时间是多少呢?谢谢!
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我看到一个文档中说如下图的性能参数,我想问问如果用6670 4核+FFTC 性能参数又是多少呢?比如说64K大小的数据用FFTC的计算时间是多少呢?谢谢!
另外在附件文档1 KeyStone Architecture FFTC.pdf 第16页中提到:
The memory buffer of the FFT engine is divided into three banks. Each bank can hold
a maximum of 4096 FFT words. Each complex FF T input sample is made up of a 16-bit
real and 16-bit imaginary part. The engine performs its computations in-place. The
purpose of the three banks is to allow the system to read from one bank, write to
another while the engine is pr ocessing the data in the third when the FFT sizes are not
more that 4096. For FFT sizes 6144 and 8192, two of the three banks are used and
therefore simultaneous reading and writing of data cannot be performed while the
engine is processing data.
是不是FFTC不支持大于8192大小的傅里叶计算呢?
还有我对FFTC的用途还是不是很明确,文档中说它是用于LTE,其他的用途可以吗?
我现在要做的是一个256*256大小的图像复原,算法中有一个循环迭代的过程,在循环内部有多次FFT,对于我的用途TTFC能否起到作用?我的系统对实时性要求非常高,要至少达到毫秒级,初步计算要300次FFT,请问用6670或者6678能否满足要求呢?