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add a bit more to the abundance failure FAQ #2517

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Jul 4, 2023
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6 changes: 5 additions & 1 deletion Docs/source/faq.rst
Original file line number Diff line number Diff line change
Expand Up @@ -202,6 +202,9 @@ Managing Runs
Runtime Errors
==============

.. index:: castro.limit_fluxes_on_small_dens, castro.state_interp_order,
castro.abundance_failure_tolerance, castro.abundance_failure_rho_cutoff

#. *When running with retries, Castro requests too many substeps
and crashes.*

Expand All @@ -221,7 +224,8 @@ Runtime Errors

If the error continues, try to increase the tolerance of determining
specie abundance validity check by setting ``castro.abundance_failure_tolerance``
to a higher value.
to a higher value, or increasing the density floor below which this is
ignored by changing ``castro.abundance_failure_rho_cutoff``.

Visualization
=============
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2 changes: 1 addition & 1 deletion Docs/source/timestepping.rst
Original file line number Diff line number Diff line change
Expand Up @@ -205,7 +205,7 @@ which will subcycle twice at every level (except level 0).
Retry Mechanism
---------------

.. index:: castro.use_retry, castro.abundance_failure_tolerance, castro.retry_small_density_cutoff, castro.small_dens
.. index:: castro.use_retry, castro.abundance_failure_tolerance, castro.abundance_failure_rho_cutoff, castro.retry_small_density_cutoff, castro.small_dens

Castro's Strang CTU solver has a retry mechanism that can discard a
time step on a level and restart with a smaller timestep, subcycling
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