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updated documentation with new compile flag for mpi

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This commit is contained in:
Kalin Kiesling 2022-04-05 15:59:09 -05:00
parent 447e9cf02d
commit 837ccc73af
1 changed files with 2 additions and 11 deletions
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13
docs/source/usersguide/install.rst
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@ -387,20 +387,11 @@ Example of configuring for Debug mode:
Compiling with MPI
++++++++++++++++++
To compile with MPI, set the :envvar:`CXX` environment variable to the path to
the MPI C++ wrapper. For example, in a bash shell:
To compile with MPI, use the `-DOPENMC_USE_MPI=on` cmake flag. For example, in a bash shell:
.. code-block:: sh
export CXX=mpicxx
cmake /path/to/openmc
Note that in many shells, environment variables can be set for a single command,
i.e.
.. code-block:: sh
CXX=mpicxx cmake /path/to/openmc
cmake -DOPENMC_USE_MPI=on /path/to/openmc
Selecting HDF5 Installation
+++++++++++++++++++++++++++