git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@8097 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp
2012-05-18 22:14:39 +00:00
parent 37d733fa8f
commit 2bddadb354
6 changed files with 20 additions and 19 deletions

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@ -45,8 +45,7 @@ then only those components are summed to compute the potential energy.
per-atom energy is calculated, if using the PPPM solver via the per-atom energy is calculated, if using the PPPM solver via the
<A HREF = "kspace_style.html">kspace_style pppm</A> command. Thus it can increase <A HREF = "kspace_style.html">kspace_style pppm</A> command. Thus it can increase
the cost of the PPPM calculation if it is needed on a large fraction the cost of the PPPM calculation if it is needed on a large fraction
of the simulation timesteps. Thie <A HREF = "PDF/kspace.pdf">document</A> describes of the simulation timesteps.
how the long-range per-atom energy calculation is performed.
</P> </P>
<P>Various fixes can contribute to the total potential energy of the <P>Various fixes can contribute to the total potential energy of the
system. See the doc pages for <A HREF = "fix.html">individual fixes</A> for system. See the doc pages for <A HREF = "fix.html">individual fixes</A> for

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@ -41,8 +41,7 @@ The Kspace contribution requires 1 extra FFT each timestep the
per-atom energy is calculated, if using the PPPM solver via the per-atom energy is calculated, if using the PPPM solver via the
"kspace_style pppm"_kspace_style.html command. Thus it can increase "kspace_style pppm"_kspace_style.html command. Thus it can increase
the cost of the PPPM calculation if it is needed on a large fraction the cost of the PPPM calculation if it is needed on a large fraction
of the simulation timesteps. Thie "document"_PDF/kspace.pdf describes of the simulation timesteps.
how the long-range per-atom energy calculation is performed.
Various fixes can contribute to the total potential energy of the Various fixes can contribute to the total potential energy of the
system. See the doc pages for "individual fixes"_fix.html for system. See the doc pages for "individual fixes"_fix.html for

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@ -55,7 +55,8 @@ these terms is included in the pair energy, not the dihedral energy.
<A HREF = "#Heyes">(Heyes)</A> for the Ewald method and a related method for PPPM, <A HREF = "#Heyes">(Heyes)</A> for the Ewald method and a related method for PPPM,
as specified by the <A HREF = "kspace_style.html">kspace_style pppm</A> command. as specified by the <A HREF = "kspace_style.html">kspace_style pppm</A> command.
For PPPM, the calcluation requires 1 extra FFT each timestep that For PPPM, the calcluation requires 1 extra FFT each timestep that
per-atom stress is calculated. per-atom energy is calculated. Thie <A HREF = "PDF/kspace.pdf">document</A>
describes how the long-range per-atom energy calculation is performed.
</P> </P>
<P>As an example of per-atom potential energy compared to total potential <P>As an example of per-atom potential energy compared to total potential
energy, these lines in an input script should yield the same result energy, these lines in an input script should yield the same result

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@ -52,7 +52,8 @@ The KSpace contribution is calculated using the method in
"(Heyes)"_#Heyes for the Ewald method and a related method for PPPM, "(Heyes)"_#Heyes for the Ewald method and a related method for PPPM,
as specified by the "kspace_style pppm"_kspace_style.html command. as specified by the "kspace_style pppm"_kspace_style.html command.
For PPPM, the calcluation requires 1 extra FFT each timestep that For PPPM, the calcluation requires 1 extra FFT each timestep that
per-atom stress is calculated. per-atom energy is calculated. Thie "document"_PDF/kspace.pdf
describes how the long-range per-atom energy calculation is performed.
As an example of per-atom potential energy compared to total potential As an example of per-atom potential energy compared to total potential
energy, these lines in an input script should yield the same result energy, these lines in an input script should yield the same result

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@ -358,14 +358,14 @@ In this case, the variable is evaluated at the beginning of a run to
determine the next timestep at which a dump snapshot will be written determine the next timestep at which a dump snapshot will be written
out. On that timestep, the variable will be evaluated again to out. On that timestep, the variable will be evaluated again to
determine the next timestep, etc. Thus the variable should return determine the next timestep, etc. Thus the variable should return
timestep values. See the stagger() and logfreq() math functions for timestep values. See the stagger() and logfreq() and stride() math
<A HREF = "variable.html">equal-style variables</A>, as examples of useful functions functions for <A HREF = "variable.html">equal-style variables</A>, as examples of
to use in this context. Other similar math functions could easily be useful functions to use in this context. Other similar math functions
added as options for <A HREF = "variable.html">equal-style variables</A>. When could easily be added as options for <A HREF = "variable.html">equal-style
using the variable option with the <I>every</I> keyword, you also need to variables</A>. When using the variable option with the
use the <I>first</I> option if you want an initial snapshot written to the <I>every</I> keyword, you also need to use the <I>first</I> option if you want
dump file. The <I>every</I> keyword cannot be used with the dump <I>dcd</I> an initial snapshot written to the dump file. The <I>every</I> keyword
style. cannot be used with the dump <I>dcd</I> style.
</P> </P>
<P>For example, the following commands will <P>For example, the following commands will
write snapshots at timesteps 0,10,20,30,100,200,300,1000,2000,etc: write snapshots at timesteps 0,10,20,30,100,200,300,1000,2000,etc:

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@ -153,11 +153,12 @@ the beginning of a run to determine the next timestep at which a dump
snapshot will be written out. On that timestep, the variable will be snapshot will be written out. On that timestep, the variable will be
evaluated again to determine the next timestep, etc. Thus the evaluated again to determine the next timestep, etc. Thus the
variable should return timestep values. See the stagger() and variable should return timestep values. See the stagger() and
logfreq() math functions for <A HREF = "variable.html">equal-style variables</A>, as logfreq() and stride() math functions for <A HREF = "variable.html">equal-style
examples of useful functions to use in this context. Other similar variables</A>, as examples of useful functions to use in
math functions could easily be added as options for <A HREF = "variable.html">equal-style this context. Other similar math functions could easily be added as
variables</A>. In addition, thermodynamic output will options for <A HREF = "variable.html">equal-style variables</A>. In addition,
always occur on the first and last timestep of each run. thermodynamic output will always occur on the first and last timestep
of each run.
</P> </P>
<P>For example, the following commands will output thermodynamic info at <P>For example, the following commands will output thermodynamic info at
timesteps 0,10,20,30,100,200,300,1000,2000,etc: timesteps 0,10,20,30,100,200,300,1000,2000,etc: