Installing FFTW

Procedure

1. Use PuTTY to log in to the server as the root user.
2. Decompress the FFTW installation package.

   tar -zxvf fftw-3.3.8.tar.gz

3. Go to the directory generated after the decompression.

   cd fftw-3.3.8

4. Perform the configuration.

   ./configure CC=clang F77=flang --enable-shared --enable-threads --enable-openmp --enable-mpi MPICC=mpicc --prefix=/path/to/EXTRA/FFTW

5. Perform the compilation and installation.

   make -j && make install