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Merge branch 'development' into new_flame_wave_inputs
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yut23 authored Aug 12, 2024
2 parents b090ddb + 9d6fade commit 36450bf
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49 changes: 32 additions & 17 deletions Docs/source/faq.rst
Original file line number Diff line number Diff line change
Expand Up @@ -17,31 +17,46 @@ Compiling
There are 2 things you can do to check what’s happening. First, inspect
the directories in ``VPATH_LOCATIONS``. This can be done via:

::
.. prompt:: bash

make print-VPATH_LOCATIONS
make print-VPATH_LOCATIONS

Next, ask make to tell you where it is finding each of the source
files. This is done through a script ``find_files_vpath.py``
that is hooked into Castro’s build system. You can run this as:

::
.. prompt:: bash

make file_locations
make file_locations

At the end of the report, it will list any files it cannot find in
the vpath. Some of these are to be expected (like ``extern.f90``
and ``buildInfo.cpp``—these are written at compile-time. But any
other missing files need to be investigated.
the vpath. Some of these are to be expected (like
``buildInfo.cpp``—these are written at compile-time). But any other
missing files need to be investigated.

#. *I put a copy of one of the header files (e.g. ``problem_tagging.H``)
in my problem setup but it does not seem to recognized / used by
the build system. Why doesn't my executable use my custom version
of the header?*

This is likely due to compiler caching / ccache. You need to
clear the cache and the build:

.. prompt:: bash

ccache -C
make clean

Then rebuild and it should be recognized.

#. *I’m still having trouble compiling. How can I find out what
all of the make variables are set to?*

Use:

::
.. prompt:: bash

make help
make help

This will tell you the value of all the compilers and their options.

Expand Down Expand Up @@ -104,7 +119,7 @@ Debugging

Given a MultiFab ``mf``, you can dump out the state as:

::
.. code:: c++

print_state(mf, IntVect(AMREX_D_DECL(10, 20, 30)));

Expand All @@ -119,7 +134,7 @@ Debugging
You can simply output a FAB to ``std::cout``. Imagine that you
are in an MFIter loop, with a MultiFab ``mf``:

::
.. code:: c++

S = FArrayBox& mf[mfi];
std::cout << S << std::endl;
Expand All @@ -143,9 +158,9 @@ Profiling
When you run, a file named ``gmon.out`` will be produced. This can
be processed with gprof by running:

::
.. prompt:: bash

gprof exec-name
gprof exec-name

where *exec-name* is the name of the executable. More detailed
line-by-line information can be obtained by passing the -l
Expand All @@ -159,9 +174,9 @@ Managing Runs

Create a file called ``dump_and_continue``, e.g., as:

::
.. prompt:: bash

touch dump_and_continue
touch dump_and_continue

This will force the code to output a checkpoint file that can be used
to restart. Other options are ``plot_and_continue`` to output
Expand Down Expand Up @@ -193,9 +208,9 @@ Managing Runs

The build information (including git hashes, modules, EoS, network, etc.) can be displayed by running the executable as

::
.. prompt:: bash

./Castro.exe --describe
./Castro.exe --describe

.. _ch:faq:vis:

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