Installing FFTW

Procedure

1. Download the installation package.

   cd /path/to
   wget http://www.fftw.org/fftw-3.3.8.tar.gz
   tar xf fftw-3.3.8.tar.gz

2. Go to the source package directory and perform the installation.

   cd fftw-3.3.8
   CC=mpicc CXX=mpicxx FC=mpif90 ./configure --prefix=/path/to/fftw
   make
   make install