Hello everyone. I am running a FFT function written in C in a BeagleBoard-xM,

Electronics
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1

Hello everyone.
I am running a FFT function written in C in a BeagleBoard-xM, and I would like to check if the BB is using the DSP for doing the float operation. Any suggestion about how can I check the use of the DSP?
Thanks.

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I would try and measure the load on the arm core. If it is running on the DSP then the load increase on the arm should be negligible.

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I would bet that it isn’t using the DSP unless you went to great lengths to compile the fft program specifically for the DSP, load it into the DSP’s program memory and use some rather sophisticated techniques for communicating with the DSP through the kernel.