[petsc-users] fftw in parallel

[LikunTan]

Hi all,
I would like to use fft to calculate discrete convolution. I am referring to /src/mat/examples/tests/ex121 as a model example.
But I am not sure how to implement it in parallel, it seems to me not possible. Would you please give me any guide on this? Thanks. 		 	   		  
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