"Kevin" Seung Whan Chung

Up-to-date installation for parallel version?

7

Installying `PyMFEM` with `pip install mfem --install-option="--with-parallel" ` does not work any longer, since `--install-option` became deprecated due to the recent [update](https://github.com/pypa/pip/pull/11858). I tried to follow the other option of...

Module conflict with c++ mfem in `pyMFEM==4.5.2.1`

2

I'm forwarding this [issue](https://github.com/michael-barrow-llnl/pylibROM/issues/15) from [pylibROM](https://github.com/michael-barrow-llnl/pylibROM). Since this is a private repo, I copied it below: > A library conflict is observed for `pyMFEM>=4.5.2.1`. > > When importing pyMFEM after...

Scalability break-down in `NNLSSolver` for more than 2 processors

1

Scalability test using the unit test `tests/test_NNLS` in `par-nnls` branch shows a significant slow-down when more than 2 processors are used: | Number of processors | Time | | :---...

Need to be merged after PR #261 and #268 .

Line 66 and 163 of `lib/linalg/NNLS.cpp` use hard-coded values of `n_proc_max_for_partial_matrix_ = 15` and `nb = 3`, which seem to be used mainly for distributing the matrix. - There is...

`Matrix::orthogonalize()` works only for distributed case.

1

Based on the definition in `lib/linalg/Matrix.cpp`, `void Matrix::orthogonalize()` works only when the matrix is distributed (in parallel case). It should have a line: ``` CAROM_VERIFY(distributed()); ```

I'm currently playing with the [example 1](https://github.com/LLNL/libROM/blob/master/examples/prom/poisson_global_rom.cpp). Although, I'm having a memory limitation error at merge stage, which I think is somewhat strange: ``` test@3a4a682f99d7:~/build/examples/prom$ sudo ./poisson_global_rom -merge -ns 3...

Parallel snapshot generation with a custom MPI communicator

2

Currently `BasisReader`, `BasisWriter`, and `BasisGenerator` are initialized with only `MPI_COMM_WORLD`. This has been a limitation, particularly for generating samples in parallel. This happens when multiple samples can be run in...

merlin workflow example for heat_conduction_hdf

2

This PR has the [merlin](https://merlin.readthedocs.io/en/latest/) workflow example for heat conduction hdf. The workflow is equivalent to `examples/dmd/heat_conduction_hdf.sh`. Neither merlin nor libROM need to be compiled together with each other. The...

Currently, mgmol classes do not initialize pointer member variables in their class definitions. For example of `MGMol`, ``` template class MGmol : public MGmolInterface { private: std::ostream& os_; MPI_Comm comm_;...