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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@7344 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp
2011-12-13 17:03:43 +00:00
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doc/processors.html
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@ -15,24 +15,32 @@
</P>
<PRE>processors Px Py Pz keyword args ...
</PRE>
<UL><LI>Px,Py,Pz = # of processors in each dimension of a 3d grid
<UL><LI>Px,Py,Pz = # of processors in each dimension of 3d grid overlaying the simulation domain
<LI>zero or more keyword/arg pairs may be appended
<LI>keyword = <I>grid</I> or <I>level2</I> or <I>level3</I> or <I>numa</I> or <I>part</I> or <I>file</I>
<LI>keyword = <I>grid</I> or <I>map</I> or <I>part</I> or <I>file</I>
<PRE> <I>grid</I> arg = <I>cart</I> or <I>cart/reorder</I> or <I>xyz</I> or <I>xzy</I> or <I>yxz</I> or <I>yzx</I> or <I>zxy</I> or <I>zyx</I>
cart = use MPI_Cart() methods to layout 3d grid of procs with reorder = 0
cart/reorder = use MPI_Cart() methods to layout 3d grid of procs with reorder = 1
xyz,xzy,yxz,yzx,zxy,zyx = layout 3d grid of procs in IJK order
<PRE> <I>grid</I> arg = gstyle params ...
gstyle = <I>onelevel</I> or <I>twolevel</I> or <I>numa</I> or <I>custom</I>
onelevel params = none
twolevel params = Cx Cy Cz
Cx,Cy,Cz = # of cores in each dimension of 3d sub-grid assigned to each node
numa params = none
custom params = fname
fname = file containing grid layout
<I>map</I> arg = <I>cart</I> or <I>cart/reorder</I> or <I>xyz</I> or <I>xzy</I> or <I>yxz</I> or <I>yzx</I> or <I>zxy</I> or <I>zyx</I>
cart = use MPI_Cart() methods to map processors to 3d grid with reorder = 0
cart/reorder = use MPI_Cart() methods to map processors to 3d grid with reorder = 1
xyz,xzy,yxz,yzx,zxy,zyx = map procesors to 3d grid in IJK ordering
<I>numa</I> arg = none
<I>part</I> args = Psend Precv cstyle
Psend = partition # (1 to Np) which will send its processor layout
Precv = partition # (1 to Np) which will recv the processor layout
cstyle = <I>multiple</I>
<I>multiple</I> = Psend layout will be multiple of Precv layout in each dimension
<I>file</I> arg = fname
fname = name of file to write processor mapping info to
<I>multiple</I> = Psend grid will be multiple of Precv grid in each dimension
<I>file</I> arg = outname
outname = name of file to write 3d grid of processors to
</PRE>
</UL>
@ -40,10 +48,9 @@
</P>
<PRE>processors * * 5
processors 2 4 4
processors 2 4 4 grid xyz
processors * * 8 grid xyz
processors * * * numa
processors 4 8 16 custom myfile
processors * * 8 map xyz
processors * * * grid numa
processors 4 8 16 grid custom myfile
processors * * * part 1 2 multiple
</PRE>
<P><B>Description:</B>
@ -238,11 +245,7 @@ same <I>name</I>.
It can be used before a restart file is read to change the 3d
processor grid from what is specified in the restart file.
</P>
<P>You cannot use more than one of the <I>level2</I>, <I>level3</I>, or <I>numa</I>
keywords.
</P>
<P>The <I>numa</I> keyword cannot be used with the <I>part</I> keyword, and it
ignores the <I>grid</I> setting.
<P>The <I>grid numa</I> keyword only currently works with the <I>map cart</I> option.
</P>
<P><B>Related commands:</B>
</P>
@ -251,6 +254,6 @@ switch</A>
</P>
<P><B>Default:</B>
</P>
<P>The option defaults are Px Py Pz = * * * and grid = cart.
<P>The option defaults are Px Py Pz = * * *, grid = level1, and map = cart.
</P>
</HTML>