git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@1887 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp 2008-06-06 23:07:09 +00:00
parent 08416eaf3e
commit 31dd4cc6a6
3 changed files with 25 additions and 23 deletions

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@ -76,25 +76,19 @@ mpirun -np 8 lmp_foo < in.rhodo
Parallel scaled-size runs (on 16 procs in this case):
mpirun -np 16 lmp_foo -var x 40 -var y 40 -var z 80 < in.lj
mpirun -np 16 lmp_foo -var x 2 -var y 2 -var z 4 < in.lj
mpirun -np 16 lmp_foo -var x 2 -var y 2 -var z 4 < in.chain.scaled
mpirun -np 16 lmp_foo -var x 40 -var y 40 -var z 80 < in.eam
mpirun -np 16 lmp_foo -var x 2 -var y 2 -var z 4 < in.eam
mpirun -np 16 lmp_foo -var x 4 -var y 4 < in.chute.scaled
mpirun -np 16 lmp_foo -var x 2 -var y 2 -var z 4 < in.rhodo.scaled
For each of the scaled-size runs you must set 3 variables as -var
command line switches. The variables are used in the input scripts to
scale up the problem size in each dimension. Imagine the P processors
arrayed as a 3d grid, so that P = Px * Py * Pz. For P = 16, you might
use Px = 2, Py = 2, Pz = 4. To scale up equally in all dimensions you
roughly want Px = Py = Pz.
For LJ and Eam runs, use Px,Py,Pz multiplied by 20 to set the variable
values of x,y,z, as in the example mpirun commands above.
For Chain and Rhodo runs, use Px,Py,Pz directly to set the variable
values of x,y,z, as in the example mpirun commands above.
command line switches. The variables x,y,z are used in the input
scripts to scale up the problem size in each dimension. Imagine the P
processors arrayed as a 3d grid, so that P = Px * Py * Pz. For P =
16, you might use Px = 2, Py = 2, Pz = 4. To scale up equally in all
dimensions you roughly want Px = Py = Pz. Using the var switches, set
x = Px, y = Py, and z = Pz.
For Chute runs, you must have Pz = 1. Therefore P = Px * Py and you
only need to set variables x and y. Use Px,Py directly to set the
values of x,y, as in the example mpirun command above.
only need to set variables x and y.

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@ -1,14 +1,18 @@
# bulk Cu lattice
variable x index 20
variable y index 20
variable z index 20
variable x index 1
variable y index 1
variable z index 1
variable xx equal 20*$x
variable yy equal 20*$y
variable zz equal 20*$z
units metal
atom_style atomic
lattice fcc 3.615
region box block 0 $x 0 $y 0 $z
region box block 0 ${xx} 0 ${yy} 0 ${zz}
create_box 1 box
create_atoms 1 box

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@ -1,14 +1,18 @@
# 3d Lennard-Jones melt
variable x index 20
variable y index 20
variable z index 20
variable x index 1
variable y index 1
variable z index 1
variable xx equal 20*$x
variable yy equal 20*$y
variable zz equal 20*$z
units lj
atom_style atomic
lattice fcc 0.8442
region box block 0 $x 0 $y 0 $z
region box block 0 ${xx} 0 ${yy} 0 ${zz}
create_box 1 box
create_atoms 1 box
mass 1 1.0