next batch of converted files

.. index:: fix_modify AtC on_the_fly

fix_modify AtC on_the_fly command

=================================

Syntax

""""""

.. parsed-literal::

   fix_modify <AtC fixID> on_the_fly on_the_fly <bond|kernel> <on|off>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance

* on_the_fly = name of the AtC sub-command

* *bond* or *kernel* = specifies on-the-fly calculation of *bond* or *kernel* matrix elements

* *on* or *off* = activate or discontinue on-the-fly mode

Examples

""""""""

.. code-block:: LAMMPS

   fix_modify AtC on_the_fly bond on

   fix_modify AtC on_the_fly kernel

   fix_modify AtC on_the_fly kernel off

Description

"""""""""""

Overrides normal mode of pre-calculating and storing bond pair-to-node a

nd kernel atom-to-node matrices. If activated, it will calculate elements

of these matrices during repeated calls of field computations

(i.e. "on-the-fly") and not store them for future use.  The *on* flag is

optional - if omitted, on_the_fly will be activated for the specified

matrix.  Can be deactivated using the *off* flag.

Restrictions

""""""""""""

Must be used with :doc:`fix atc hardy <fix_atc>`.

Related AtC commands

""""""""""""""""""""

- :ref:`fix_modify AtC command overview <atc_fix_modify>`

Default

"""""""

By default, on-the-fly calculation is not active (i.e. off). However,

THE code does a memory allocation check to determine if it can store all

needed bond and kernel matrix elements. If this allocation fails,

on-the-fly will be activated.

* :doc:`fix_modify AtC gradients <atc_hardy_gradients>`

* :doc:`fix_modify AtC rates <atc_hardy_rates>`

* :doc:`fix_modify AtC computes <atc_hardy_computes>`

* `fix_modify AtC on_the_fly <USER/atc/man_hardy_on_the_fly.html>`_

* :doc:`fix_modify AtC on_the_fly <atc_hardy_on_the_fly>`

* `fix_modify AtC pair_interactions/bond_interactions <USER/atc/man_pair_interactions.html>`_

* `fix_modify AtC sample_frequency <USER/atc/man_sample_frequency.html>`_

* `fix_modify AtC set <USER/atc/man_set.html>`_