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Allow depletion with MPI and serial HDF5

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Paul Romano 2020-05-15 14:23:35 -05:00
parent e8e97e23e1
commit 73cbdb6324
3 changed files with 55 additions and 34 deletions
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27
docs/source/usersguide/install.rst
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@ -407,9 +407,7 @@ Prerequisites
The Python API works with Python 3.5+. In addition to Python itself, the API
relies on a number of third-party packages. All prerequisites can be installed
using Conda_ (recommended), pip_, or through the package manager in most Linux
distributions. To run simulations in parallel using MPI, it is recommended to
build mpi4py, HDF5, h5py from source, in that order, using the same compilers
as for OpenMC.
distributions.
.. admonition:: Required
:class: error
@ -461,6 +459,29 @@ as for OpenMC.
`pytest <https://docs.pytest.org>`_
The pytest framework is used for unit testing the Python API.
If you are running simulations that require OpenMC's Python bindings to the C
API (including depletion and CMFD), it is recommended to build ``h5py`` (and
``mpi4py``, if you are using MPI) using the same compilers and HDF5 version as
for OpenMC. Thus, the install process would proceed as follows:
.. code-block:: sh
mkdir build && cd build
HDF5_ROOT=<path to HDF5> CXX=<path to mpicxx> cmake ..
make
make install
cd ..
MPICC=<path to mpicc> pip install mpi4py
HDF5_DIR=<path to HDF5> pip install --no-binary=h5py h5py
If you are using parallel HDF5, you'll also need to make sure the right MPI
wrapper is used when installing h5py:
.. code-block::
CC=<path to mpicc> HDF5_MPI=ON HDF5_DIR=<path to HDF5> pip install --no-binary=h5py h5py
.. _usersguide_nxml:
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