Cabana requires host backend for HeFFTe

[dineshadepu]

Hi all,

I am currently working with the CabanaPF (phase field) code for battery modeling, which requires the HeFFTe library. I successfully installed HeFFTe, but I am encountering issues when building Cabana with HeFFTe.

During the build process, I am facing the following error

softwares/Cabana/grid/src/Cabana_Grid_FastFourierTransform.hpp:384:1: error: expected unqualified-id before ‘throw’
  384 | throw std::runtime_error( "Must enable at least one heFFTe host backend." );

I am not sure how to fix this thing. Any idea on how to fix this.

Many thanks.

[streeve]

Can you add the details of how you've configured heffte? The error is pointing out that you may only have cufft enabled, but we require one of fftw or mkl as well

[dalg24]

Is that not something we could diagnose at configuration time?

[streeve]

Is that not something we could diagnose at configuration time?

You're right, that should be an easy update

[dineshadepu]

Thanks for the inputs @streeve . To resolve the issue, I installed fftw to ensure compatibility with heffte. The key was to install fftw with shared libraries enabled and generate both single and double precision libraries. This required installing fftw twice with specific configuration flags.

Step 1: Install fftw (Double Precision)

First, install fftw with double precision:

cd fftw
./configure --enable-shared --enable-threads --enable-openmp --enable-mpi
make -j 6
sudo make install

Step 2: Install fftw (Single Precision)

Next, install fftw with single precision by adding the --enable-float flag:

cd fftw
./configure --enable-shared --enable-float --enable-threads --enable-openmp --enable-mpi
make -j 6
sudo make install

These steps will install the necessary shared libraries in /usr/local/lib, which heffte can use.

Step 3: Install heffte

Now, proceed with installing heffte:

cd heffte
mkdir build
cd build
cmake -D CMAKE_INSTALL_PREFIX=$HEFFTE_INSTALL_DIR -D Heffte_ENABLE_FFTW=ON ../
make
make install

Step 4: Complete Setup for Cabana

Finally, follow the remaining instructions for Cabana, ensuring that heffte is enabled during the process.