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parallel_groups.py
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parallel_groups.py
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"""Define `Group`s with parallel topologies for testing"""
import openmdao.api as om
class FanOut(om.Group):
"""
Topology where one comp broadcasts an output to two target
components.
"""
def __init__(self):
super().__init__()
self.add_subsystem('p', om.IndepVarComp('x', 1.0))
self.add_subsystem('comp1', om.ExecComp(['y=3.0*x']))
self.add_subsystem('comp2', om.ExecComp(['y=-2.0*x']))
self.add_subsystem('comp3', om.ExecComp(['y=5.0*x']))
self.connect("p.x", "comp1.x")
self.connect("comp1.y", "comp2.x")
self.connect("comp1.y", "comp3.x")
class FanOutGrouped(om.Group):
"""
Topology where one component broadcasts an output to two target
components.
"""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 1.0))
self.add_subsystem('c1', om.ExecComp(['y=3.0*x']))
self.sub = self.add_subsystem('sub', om.ParallelGroup())
self.sub.add_subsystem('c2', om.ExecComp(['y=-2.0*x']))
self.sub.add_subsystem('c3', om.ExecComp(['y=5.0*x']))
self.add_subsystem('c2', om.ExecComp(['y=x']))
self.add_subsystem('c3', om.ExecComp(['y=x']))
self.connect('iv.x', 'c1.x')
self.connect('c1.y', 'sub.c2.x')
self.connect('c1.y', 'sub.c3.x')
self.connect('sub.c2.y', 'c2.x')
self.connect('sub.c3.y', 'c3.x')
class FanIn(om.Group):
"""
Topology where two comps feed a single comp.
"""
def __init__(self):
super().__init__()
self.add_subsystem('p1', om.IndepVarComp('x1', 1.0))
self.add_subsystem('p2', om.IndepVarComp('x2', 1.0))
self.add_subsystem('comp1', om.ExecComp(['y=-2.0*x']))
self.add_subsystem('comp2', om.ExecComp(['y=5.0*x']))
self.add_subsystem('comp3', om.ExecComp(['y=3.0*x1+7.0*x2']))
self.connect("comp1.y", "comp3.x1")
self.connect("comp2.y", "comp3.x2")
self.connect("p1.x1", "comp1.x")
self.connect("p2.x2", "comp2.x")
class FanInGrouped(om.Group):
"""
Topology where two components in a Group feed a single component
outside of that Group.
"""
def __init__(self):
super().__init__()
self.set_input_defaults('x1', 1.0)
self.set_input_defaults('x2', 1.0)
self.sub = self.add_subsystem('sub', om.ParallelGroup(),
promotes_inputs=['x1', 'x2'])
self.sub.add_subsystem('c1', om.ExecComp(['y=-2.0*x']),
promotes_inputs=[('x', 'x1')])
self.sub.add_subsystem('c2', om.ExecComp(['y=5.0*x']),
promotes_inputs=[('x', 'x2')])
self.add_subsystem('c3', om.ExecComp(['y=3.0*x1+7.0*x2']))
self.connect("sub.c1.y", "c3.x1")
self.connect("sub.c2.y", "c3.x2")
class FanInGrouped2(om.Group):
"""
Topology where two components in a Group feed a single component
outside of that Group. This is slightly different than FanInGrouped
in that it has two different IndepVarComps. This configuration
is used to test a reverse indexing MPI bug that does not appear
when using FanInGrouped.
"""
def __init__(self):
super().__init__()
p1 = self.add_subsystem('p1', om.IndepVarComp('x', 1.0))
p2 = self.add_subsystem('p2', om.IndepVarComp('x', 1.0))
self.sub = self.add_subsystem('sub', om.ParallelGroup())
self.sub.add_subsystem('c1', om.ExecComp(['y=-2.0*x']))
self.sub.add_subsystem('c2', om.ExecComp(['y=5.0*x']))
self.add_subsystem('c3', om.ExecComp(['y=3.0*x1+7.0*x2']))
self.connect("sub.c1.y", "c3.x1")
self.connect("sub.c2.y", "c3.x2")
self.connect("p1.x", "sub.c1.x")
self.connect("p2.x", "sub.c2.x")
class DiamondFlat(om.Group):
"""
Topology: one - two - one.
This one is flat."""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 2.0))
self.add_subsystem('c1', om.ExecComp(['y1 = 2.0*x1**2',
'y2 = 3.0*x1'
]))
self.add_subsystem('c2', om.ExecComp('y1 = 0.5*x1'))
self.add_subsystem('c3', om.ExecComp('y1 = 3.5*x1'))
self.add_subsystem('c4', om.ExecComp(['y1 = x1 + 2.0*x2',
'y2 = 3.0*x1 - 5.0*x2'
]))
# make connections
self.connect('iv.x', 'c1.x1')
self.connect('c1.y1', 'c2.x1')
self.connect('c1.y2', 'c3.x1')
self.connect('c2.y1', 'c4.x1')
self.connect('c3.y1', 'c4.x2')
class Diamond(om.Group):
"""
Topology: one - two - one.
"""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 2.0))
self.add_subsystem('c1', om.ExecComp(['y1 = 2.0*x1**2',
'y2 = 3.0*x1'
]))
sub = self.add_subsystem('sub', om.ParallelGroup())
sub.add_subsystem('c2', om.ExecComp('y1 = 0.5*x1'))
sub.add_subsystem('c3', om.ExecComp('y1 = 3.5*x1'))
self.add_subsystem('c4', om.ExecComp(['y1 = x1 + 2.0*x2',
'y2 = 3.0*x1 - 5.0*x2'
]))
# make connections
self.connect('iv.x', 'c1.x1')
self.connect('c1.y1', 'sub.c2.x1')
self.connect('c1.y2', 'sub.c3.x1')
self.connect('sub.c2.y1', 'c4.x1')
self.connect('sub.c3.y1', 'c4.x2')
class ConvergeDivergeFlat(om.Group):
"""
Topology one - two - one - two - one. This model was critical in
testing parallel reverse scatters. This version is perfectly flat.
"""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 2.0))
self.add_subsystem('c1', om.ExecComp(['y1 = 2.0*x1**2',
'y2 = 3.0*x1'
]))
self.add_subsystem('c2', om.ExecComp('y1 = 0.5*x1'))
self.add_subsystem('c3', om.ExecComp('y1 = 3.5*x1'))
self.add_subsystem('c4', om.ExecComp(['y1 = x1 + 2.0*x2',
'y2 = 3.0*x1 - 5.0*x2'
]))
self.add_subsystem('c5', om.ExecComp('y1 = 0.8*x1'))
self.add_subsystem('c6', om.ExecComp('y1 = 0.5*x1'))
self.add_subsystem('c7', om.ExecComp('y1 = x1 + 3.0*x2'))
# make connections
self.connect('iv.x', 'c1.x1')
self.connect('c1.y1', 'c2.x1')
self.connect('c1.y2', 'c3.x1')
self.connect('c2.y1', 'c4.x1')
self.connect('c3.y1', 'c4.x2')
self.connect('c4.y1', 'c5.x1')
self.connect('c4.y2', 'c6.x1')
self.connect('c5.y1', 'c7.x1')
self.connect('c6.y1', 'c7.x2')
class ConvergeDiverge(om.Group):
"""
Topology: one - two - one - two - one.
Used for testing parallel reverse scatters.
"""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 2.0))
self.add_subsystem('c1', om.ExecComp(['y1 = 2.0*x1**2',
'y2 = 3.0*x1'
]))
g1 = self.add_subsystem('g1', om.ParallelGroup())
g1.add_subsystem('c2', om.ExecComp('y1 = 0.5*x1'))
g1.add_subsystem('c3', om.ExecComp('y1 = 3.5*x1'))
self.add_subsystem('c4', om.ExecComp(['y1 = x1 + 2.0*x2',
'y2 = 3.0*x1 - 5.0*x2'
]))
g2 = self.add_subsystem('g2', om.ParallelGroup())
g2.add_subsystem('c5', om.ExecComp('y1 = 0.8*x1'))
g2.add_subsystem('c6', om.ExecComp('y1 = 0.5*x1'))
self.add_subsystem('c7', om.ExecComp('y1 = x1 + 3.0*x2'))
# make connections
self.connect('iv.x', 'c1.x1')
self.connect('c1.y1', 'g1.c2.x1')
self.connect('c1.y2', 'g1.c3.x1')
self.connect('g1.c2.y1', 'c4.x1')
self.connect('g1.c3.y1', 'c4.x2')
self.connect('c4.y1', 'g2.c5.x1')
self.connect('c4.y2', 'g2.c6.x1')
self.connect('g2.c5.y1', 'c7.x1')
self.connect('g2.c6.y1', 'c7.x2')
class ConvergeDivergeGroups(om.Group):
"""
Topology: one - two - one - two - one.
Used for testing parallel reverse scatters. This version contains some
deeper nesting.
"""
def __init__(self):
super().__init__()
self.add_subsystem('iv', om.IndepVarComp('x', 2.0))
g1 = self.add_subsystem('g1', om.ParallelGroup())
g1.add_subsystem('c1', om.ExecComp(['y1 = 2.0*x1**2',
'y2 = 3.0*x1'
]))
g2 = g1.add_subsystem('g2', om.ParallelGroup())
g2.add_subsystem('c2', om.ExecComp('y1 = 0.5*x1'))
g2.add_subsystem('c3', om.ExecComp('y1 = 3.5*x1'))
g1.add_subsystem('c4', om.ExecComp(['y1 = x1 + 2.0*x2',
'y2 = 3.0*x1 - 5.0*x2'
]))
g3 = self.add_subsystem('g3', om.ParallelGroup())
g3.add_subsystem('c5', om.ExecComp('y1 = 0.8*x1'))
g3.add_subsystem('c6', om.ExecComp('y1 = 0.5*x1'))
self.add_subsystem('c7', om.ExecComp('y1 = x1 + 3.0*x2'))
# make connections
self.connect('iv.x', 'g1.c1.x1')
g1.connect('c1.y1', 'g2.c2.x1')
g1.connect('c1.y2', 'g2.c3.x1')
self.connect('g1.g2.c2.y1', 'g1.c4.x1')
self.connect('g1.g2.c3.y1', 'g1.c4.x2')
self.connect('g1.c4.y1', 'g3.c5.x1')
self.connect('g1.c4.y2', 'g3.c6.x1')
self.connect('g3.c5.y1', 'c7.x1')
self.connect('g3.c6.y1', 'c7.x2')
class FanInSubbedIDVC(om.Group):
"""
Classic Fan In with indepvarcomps buried below the parallel group, and a summation
component.
"""
def setup(self):
sub = self.add_subsystem('sub', om.ParallelGroup())
sub1 = sub.add_subsystem('sub1', om.Group())
sub2 = sub.add_subsystem('sub2', om.Group())
sub1.add_subsystem('p1', om.IndepVarComp('x', 3.0))
sub2.add_subsystem('p2', om.IndepVarComp('x', 5.0))
sub1.add_subsystem('c1', om.ExecComp(['y = 2.0*x']))
sub2.add_subsystem('c2', om.ExecComp(['y = 4.0*x']))
sub1.connect('p1.x', 'c1.x')
sub2.connect('p2.x', 'c2.x')
self.add_subsystem('sum',om. ExecComp(['y = z1 + z2']))
self.connect('sub.sub1.c1.y', 'sum.z1')
self.connect('sub.sub2.c2.y', 'sum.z2')
self.sub.sub1.add_design_var('p1.x')
self.sub.sub2.add_design_var('p2.x')
self.add_objective('sum.y')