conda¶

Install libEnsemble with Conda from the conda-forge channel:

conda config --add channels conda-forge
conda install -c conda-forge libensemble

This package comes with some useful optional dependencies, including optimizers and will install quickly as ready binary packages.

Installing with mpi4py with Conda

If you wish to use mpi4py with libEnsemble (choosing MPI out of the three communications options), you can use the following.

Note

For clusters and HPC systems, always install mpi4py to use the system MPI library (see pip instructions above).

For a standalone build that comes with an MPI implementation, you can install libEnsemble using one of the following variants.

To install libEnsemble with MPICH:

conda install -c conda-forge libensemble=*=mpi_mpich*

To install libEnsemble with Open MPI:

conda install -c conda-forge libensemble=*=mpi_openmpi*

The asterisks will pick up the latest version and build.

Note

This syntax may not work without adjustments on macOS or any non-bash shell. In these cases, try:

conda install -c conda-forge libensemble='*'=mpi_mpich'*'

For a complete list of builds for libEnsemble on Conda:

conda search libensemble --channel conda-forge