FFTW in a Firedrake dockerfile

[colinjcotter]

Hi folks,

I use the Firedrake docker file in the automated test system for https://github.com/colinjcotter/asQ via GitHub Actions.
We need to build Firedrake by passing PETSC_CONFIGURE_OPTIONS="--download-fftw=1" to the install script, because we use FFTW and it needs to be

Please can you provide an FFTW version of the docker file? Or if that's not a good idea, please can you tell me how I can provide one?

all the best
--cjc

[dham]

I can't see any reason not to have FFTW in the standard Docker containers. Put in a PR adding to the install line in docker/Dockerfile.vanilla

[wence-]

(Done in #2331)

[colinjcotter]

I have included the following lines in my test.yml file that specifies the GitHub actions:

          export FFTW_INCLUDE_DIR=/home/firedrake/src/petsc/default/include
          export FFTW_LIBRARY_DIR=/home/firedrake/src/petsc/default/lib
          python -m pip install mpi4py-fft 

The mpi4py-fft installer uses those variables to link against your specified FFTW build. However, the GitHub Actions install says:

AssertionError: No FFTW libraries found in ['/home/firedrake/firedrake/lib64', '/home/firedrake/firedrake/lib', '/usr/lib64', '/usr/lib/x86_64-linux-gnu', '/usr/lib']

This suggests that these variables are not getting passed to pip install. What is the right way to do this?

[wence-]

does the docker image actually have fftw yet?

[wence-]

It should be /home/firedrake/firedrake/src/petsc/default/include etc...