[petsc-users] FFTW convolution in Petsc

[LikunTan]

Hi all,
I am testing /petsc-3.4.3/src/mat/examples/tests/ex121.c for FFTW convolution in Petsc.
I simplified the example code by considering the tangent function of the real space vector only, and got the following error when executing it:
[0]PETSC ERROR: --------------------- Error Message ------------------------------------[0]PETSC ERROR: Unknown type. Check for miss-spelling or missing external package needed for type:see http://www.mcs.anl.gov/petsc/documentation/installation.html#external![0]PETSC ERROR: Unknown Mat type given: fftw![0]PETSC ERROR: ------------------------------------------------------------------------[0]PETSC ERROR: Petsc Release Version 3.4.3, Oct, 15, 2013 [0]PETSC ERROR: See docs/changes/index.html for recent updates.[0]PETSC ERROR: See docs/faq.html for hints about trouble shooting.[0]PETSC ERROR: See docs/index.html for manual pages.[0]PETSC ERROR: ------------------------------------------------------------------------[0]PETSC ERROR: ./ex121 on a arch-linux2-c-debug named garuda.ce.caltech.edu by likunt Sat Jul  5 16:07:13 2014[0]PETSC ERROR: Libraries linked from /home/likunt/petsc-3.4.3/arch-linux2-c-debug/lib[0]PETSC ERROR: Configure run at Sat Jul  5 13:01:11 2014[0]PETSC ERROR: Configure options --with-scale-type=complex[0]PETSC ERROR: ------------------------------------------------------------------------[0]PETSC ERROR: MatSetType() line 63 in src/mat/interface/matreg.c[0]PETSC ERROR: MatCreateFFT() line 76 in src/mat/impls/fft/fft.c[0]PETSC ERROR: main() line 59 in src/mat/examples/tests/ex121.c
The error message shows lack of FFTW, but I am not sure how to include FFTW in the external package. Your help is well appreciated.
 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mcs.anl.gov/pipermail/petsc-users/attachments/20140706/37166721/attachment.html>