pySDC

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Added files related to lossless compression and cache manager for the compression project.

sansriti-ranjan

How to use pySDC with Fenics?

1

Hello, everyone! I am a newer on pySDC. I notice that pySDC works with [FEniCS](https://fenicsproject.org/), [mpi4py-fft](https://mpi4py-fft.readthedocs.io/en/latest/) and [PETSc](http://www.mcs.anl.gov/petsc/) (through [petsc4py](https://bitbucket.org/petsc/petsc4py)). Which versions of Fenics are compatible? Are there any examples...

zhyxue0

Timeout issues with mac runners

3

Looks like the mac runners (esp. the one with MPI) keep running into the artificial timeout imposed on the tests. Options: * We could remove the timeout in general, but...

pancetta

Conda recent changes to use mamba solver per default

1

Recently, conda decided to switch per default to the mamba solver in their new version, to avoid the known speed issue of the classical solver when solving big environments :...

tlunet

Following a template applied to the [advectionNd](https://github.com/Parallel-in-Time/pySDC/blob/v6/pySDC/implementations/problem_classes/AdvectionEquation_ND_FD.py) problem class, rework all other implementations to get to the same standards : - [x] use of the default parameter approach and inheritance...

tlunet

Implement Multistep Methods for Comparison

3

We have diagonally implicit and explicit Runge-Kutta methods implemented for comparison between SDC and other algorithms. If anyone ever feels bored, I think it would be nice to implement multistep...

brownbaerchen

Test coverage of [Sweeper.py](https://github.com/Parallel-in-Time/pySDC/blob/master/pySDC/core/Sweeper.py) looks [terrible](https://parallel-in-time.org/pySDC/coverage/d_8d0d803e4e125e5c_Sweeper_py.html). We should change this.

pancetta

This has been done in the non-MPI controller already, but remains on the todo list for MPI implementations.

brownbaerchen

Test coverage of the [problem_helpers](https://github.com/Parallel-in-Time/pySDC/blob/master/pySDC/helpers/problem_helper.py) look [terrible](https://parallel-in-time.org/pySDC/coverage/d_41564483689e14fd_problem_helper_py.html). We should change this.

pancetta

We're missing tests for [certain cases](https://parallel-in-time.org/pySDC/coverage/d_41564483689e14fd_transfer_helper_py.html#t111) when the grid is periodic.

pancetta