def ExportData(self, data_config):
data_type = data_config["type"]
if data_type == "coupling_interface_data":
interface_data = data_config["interface_data"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", interface_data.name)
CoSimIO.ExportData(info, interface_data.GetModelPart(),
interface_data.variable,
GetDataLocation(interface_data.location))
elif data_type == "control_signal":
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", "run_control")
info.SetString("control_signal", data_config["control_signal"])
settings = data_config.get("settings")
if settings:
info.SetInfo("settings", CoSimIO.InfoFromParameters(settings))
CoSimIO.ExportInfo(info)
elif data_type == "repeat_time_step":
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", "repeat_time_step_info")
info.SetBool("repeat_time_step", data_config["repeat_time_step"])
CoSimIO.ExportInfo(info)
else:
raise NotImplementedError(
'Exporting interface data of type "{}" is not implemented for this IO: "{}"'
.format(data_type, self._ClassName()))
def __ExportImportDataOnModelPart(self, model_part, var_export, var_import,
data_location):
p = self.__RunPythonInSubProcess("import_export_data")
connection_settings = CoSimIO.Info()
connection_settings.SetString("my_name", "ExpImp")
connection_settings.SetString("connect_to", "impExp")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
connection_name = info.GetString("connection_name")
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
export_info = CoSimIO.Info()
export_info.SetString("connection_name", connection_name)
export_info.SetString("identifier", "data_exchange_1")
CoSimIO.ExportData(export_info, model_part, var_export, data_location)
import_info = CoSimIO.Info()
import_info.SetString("connection_name", connection_name)
import_info.SetString("identifier", "data_exchange_2")
CoSimIO.ImportData(import_info, model_part, var_import, data_location)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
self.__CheckSubProcess(p)
def test_Export_Import_Data_raw_values(self):
connection_settings = CoSimIO.Info()
connection_settings.SetString("connection_name", "im_exp_data")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
values = [1.0, 2.5, 3.3, -9.4]
export_info = CoSimIO.Info()
export_info.SetString("connection_name", "im_exp_data")
export_info.SetString("identifier", "data_exchange_1")
CoSimIO.ExportData(export_info, values)
RunPythonInSubProcess("import_export_data")
import_info = CoSimIO.Info()
import_info.SetString("connection_name", "im_exp_data")
import_info.SetString("identifier", "data_exchange_2")
imported_values = CoSimIO.ImportData(import_info)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", "im_exp_data")
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
# checking the values after disconnecting to avoid deadlock
self.assertVectorAlmostEqual(KM.Vector(values),
KM.Vector(imported_values))
def ExportData(self, data_config):
data_type = data_config["type"]
if data_type == "coupling_interface_data":
interface_data = data_config["interface_data"]
info = CoSimIO.Info()
info.SetString("connection_name", self.solver_name)
info.SetString("identifier", interface_data.name)
CoSimIO.ExportData(info, interface_data.GetModelPart(),
interface_data.variable,
GetDataLocation(interface_data.location))
elif data_type == "control_signal":
control_signal_key = data_config["signal"]
CoSimIO.SendControlSignal(self.solver_name,
data_config["identifier"],
control_signal_key)
elif data_type == "time":
current_time = data_config["time"]
CoSimIO.ExportData(self.solver_name, "time_from_co_sim",
[current_time])
elif data_type == "convergence_signal":
if data_config["is_converged"]:
control_signal_key = CoSimIO.ControlSignal.ConvergenceAchieved
else:
control_signal_key = CoSimIO.ControlSignal.Dummy
info = CoSimIO.Info()
info.SetString("connection_name", self.solver_name)
CoSimIO.SendControlSignal(info, control_signal_key)
else:
raise NotImplementedError(
'Exporting interface data of type "{}" is not implemented for this IO: "{}"'
.format(data_type, self._ClassName()))
def __InnerLoop(self):
# Import fields
for field_settings in self.communication_settings["import_fields"]:
identifier = field_settings["identifier"].GetString()
model_part_name = field_settings["model_part_name"].GetString()
model_part = self.model[model_part_name]
variable_name = field_settings["variable_name"].GetString()
variable = KM.KratosGlobals.GetVariable(variable_name)
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", identifier)
CoSimIO.ImportData(info, model_part, variable,
CoSimIO.DataLocation.NodeHistorical)
self._GetSolver().SolveSolutionStep()
# Export fields
for field_settings in self.communication_settings["export_fields"]:
identifier = field_settings["identifier"].GetString()
model_part_name = field_settings["model_part_name"].GetString()
model_part = self.model[model_part_name]
variable_name = field_settings["variable_name"].GetString()
variable = KM.KratosGlobals.GetVariable(variable_name)
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", identifier)
CoSimIO.ExportData(info, model_part, variable,
CoSimIO.DataLocation.NodeHistorical)
def test_Export_Import_Mesh(self):
model = KM.Model()
model_part = model.CreateModelPart("for_test")
model_part_returned = model.CreateModelPart("for_test_2")
for i in range(15):
model_part.CreateNewNode(i + 1, i * 1.1, 1.1**i, 0.0)
props = model_part.CreateNewProperties(0)
for i in range(9): # this leaves some hanging nodes
model_part.CreateNewElement("Element2D2N", i + 1, [i + 1, i + 2],
props)
connection_settings = CoSimIO.Info()
connection_settings.SetString("connection_name", "im_exp_mesh")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
export_info = CoSimIO.Info()
export_info.SetString("connection_name", "im_exp_mesh")
export_info.SetString("identifier", "mesh_exchange_1")
CoSimIO.ExportMesh(export_info, model_part)
RunPythonInSubProcess("import_export_mesh")
import_info = CoSimIO.Info()
import_info.SetString("connection_name", "im_exp_mesh")
import_info.SetString("identifier", "mesh_exchange_2")
CoSimIO.ImportMesh(import_info, model_part_returned)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", "im_exp_mesh")
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
# checking the values after disconnecting to avoid deadlock
self.assertEqual(model_part.NumberOfNodes(),
model_part_returned.NumberOfNodes())
self.assertEqual(model_part.NumberOfElements(),
model_part_returned.NumberOfElements())
for node_orig, node_exchanged in zip(model_part.Nodes,
model_part_returned.Nodes):
self.assertAlmostEqual(node_orig.X0, node_exchanged.X0)
self.assertAlmostEqual(node_orig.Y0, node_exchanged.Y0)
self.assertAlmostEqual(node_orig.Z0, node_exchanged.Z0)
for elem_orig, elem_exchanged in zip(model_part.Elements,
model_part_returned.Elements):
self.assertEqual(len(elem_orig.GetNodes()),
len(elem_exchanged.GetNodes()))
for node_orig, node_exchanged in zip(elem_orig.GetNodes(),
elem_exchanged.GetNodes()):
self.assertAlmostEqual(node_orig.X0, node_exchanged.X0)
self.assertAlmostEqual(node_orig.Y0, node_exchanged.Y0)
self.assertAlmostEqual(node_orig.Z0, node_exchanged.Z0)
def _ExportMesh(info):
model_part_name = info.GetString("identifier")
export_info = CoSimIO.Info()
export_info.SetString("connection_name", self.connection_name)
export_info.SetString("identifier",
model_part_name.replace(".", "-"))
CoSimIO.ExportMesh(export_info, self.model[model_part_name])
return CoSimIO.Info()
def _ExportData(info):
identifier = info.GetString("identifier")
model_part = self.data_comm_settings[identifier]["model_part"]
variable = self.data_comm_settings[identifier]["variable"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", identifier)
CoSimIO.ExportData(info, model_part, variable,
CoSimIO.DataLocation.NodeHistorical)
return CoSimIO.Info()
def test_Connect_Disconnect(self):
connection_settings = CoSimIO.Info()
connection_settings.SetString("connection_name", "c_d_test")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
RunPythonInSubProcess("connect_disconnect")
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", "c_d_test")
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
def Initialize(self):
super().Initialize()
self.co_sim_settings = self.project_parameters["co_sim_settings"]
self.is_strong_coupling = self.co_sim_settings[
"is_strong_coupling"].GetBool()
connection_settings = CoSimIO.InfoFromParameters(
self.project_parameters["co_sim_settings"]["io_settings"])
info = CoSimIO.Connect(connection_settings)
self.connection_name = info.GetString("connection_name")
if info.GetInt(
"connection_status") != CoSimIO.ConnectionStatus.Connected:
raise Exception("Connecting failed!")
self.communication_settings = self.co_sim_settings[
"communication_settings"]
# Exporting meshes to CoSimulation
for model_part_name in self.communication_settings[
"export_meshes"].GetStringArray():
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", model_part_name.replace(".", "-"))
CoSimIO.ExportMesh(info, self.model[model_part_name])
def Finalize(self):
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", self.connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
if info.GetInt(
"connection_status") != CoSimIO.ConnectionStatus.Disconnected:
raise Exception("Disconnecting failed!")
def ExportCouplingInterface(self, interface_config):
model_part_name = interface_config["model_part_name"]
info = CoSimIO.Info()
info.SetString("connection_name", self.solver_name)
info.SetString("identifier", model_part_name)
CoSimIO.ExportMesh(info, self.model[model_part_name]
) # TODO this can also be geometry at some point
def Finalize(self):
super(StructuralMechanicsAnalysisWithCoSimIO, self).Finalize()
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", self.connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
if info.GetInt(
"connection_status") != CoSimIO.ConnectionStatus.Disconnected:
raise Exception("Disconnecting failed!")
def test_Connect_Disconnect(self):
p = self.__RunPythonInSubProcess("connect_disconnect")
connection_settings = CoSimIO.Info()
connection_settings.SetString("my_name", "partner_a")
connection_settings.SetString("connect_to", "partner_b")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
connection_name = info.GetString("connection_name")
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
self.__CheckSubProcess(p)
def ExportCouplingInterface(self, interface_config):
model_part_name = interface_config["model_part_name"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", model_part_name.replace(
".", "-")) # TODO chec if better solution can be found
CoSimIO.ExportMesh(info, self.model[model_part_name]
) # TODO this can also be geometry at some point
def test_Export_Import_Data_raw_values(self):
p = self.__RunPythonInSubProcess("import_export_data")
connection_settings = CoSimIO.Info()
connection_settings.SetString("my_name", "ExpImp")
connection_settings.SetString("connect_to", "impExp")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
connection_name = info.GetString("connection_name")
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Connected)
values = CoSimIO.DoubleVector([1.0, 2.5, 3.3, -9.4])
export_info = CoSimIO.Info()
export_info.SetString("connection_name", connection_name)
export_info.SetString("identifier", "data_exchange_1")
CoSimIO.ExportData(export_info, values)
import_info = CoSimIO.Info()
import_info.SetString("connection_name", connection_name)
import_info.SetString("identifier", "data_exchange_2")
imported_values = CoSimIO.DoubleVector()
CoSimIO.ImportData(import_info, imported_values)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
self.assertEqual(info.GetInt("connection_status"),
CoSimIO.ConnectionStatus.Disconnected)
# checking the values after disconnecting to avoid deadlock
self.assertVectorAlmostEqual(values, imported_values)
self.__CheckSubProcess(p)
def ImportData(self, data_config):
data_type = data_config["type"]
if data_type == "coupling_interface_data":
interface_data = data_config["interface_data"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", interface_data.name)
CoSimIO.ImportData(info, interface_data.GetModelPart(),
interface_data.variable,
GetDataLocation(interface_data.location))
else:
raise NotImplementedError(
'Exporting interface data of type "{}" is not implemented for this IO: "{}"'
.format(data_type, self._ClassName()))
def ImportData(self, data_config):
data_type = data_config["type"]
if data_type == "coupling_interface_data":
interface_data = data_config["interface_data"]
info = CoSimIO.Info()
info.SetString("connection_name", self.solver_name)
info.SetString("identifier", interface_data.name)
CoSimIO.ImportData(info, interface_data.GetModelPart(),
interface_data.variable,
GetDataLocation(interface_data.location))
elif data_type == "time":
time_list = CoSimIO.ImportData(self.solver_name, "time_to_co_sim")
if len(time_list) != 1:
raise Exception("Wrong size received!")
data_config["time"] = time_list[0]
else:
raise NotImplementedError(
'Exporting interface data of type "{}" is not implemented for this IO: "{}"'
.format(data_type, self._ClassName()))
def RunSolutionLoop(self):
"""This function executes the solution loop of the AnalysisStage
It can be overridden by derived classes
"""
while self.KeepAdvancingSolutionLoop():
self.time = self._GetSolver().AdvanceInTime(self.time)
self.InitializeSolutionStep()
self._GetSolver().Predict()
if self.is_strong_coupling:
is_converged = False
while not is_converged:
self.__InnerLoop()
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
is_converged_info = CoSimIO.IsConverged(info)
is_converged = is_converged_info.GetBool("is_converged")
else:
self.__InnerLoop()
self.FinalizeSolutionStep()
self.OutputSolutionStep()
def RunSolutionLoop(self):
"""This function executes the solution loop of the AnalysisStage
It can be overridden by derived classes
"""
while self.KeepAdvancingSolutionLoop():
self.time = self._GetSolver().AdvanceInTime(self.time)
self.InitializeSolutionStep()
self._GetSolver().Predict()
if self.is_strong_coupling:
repeat_time_step = True
while repeat_time_step:
self.__InnerLoop()
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", "repeat_time_step_info")
repeat_time_step_info = CoSimIO.ImportInfo(info)
repeat_time_step = repeat_time_step_info.GetBool(
"repeat_time_step")
else:
self.__InnerLoop()
self.FinalizeSolutionStep()
self.OutputSolutionStep()
def _Predict(info):
self._GetSolver().Predict()
return CoSimIO.Info()
def _InitializeSolutionStep(info):
self.InitializeSolutionStep()
return CoSimIO.Info()
def _AdvanceInTime(info):
current_time = info.GetDouble("current_time")
self.time = self._GetSolver().AdvanceInTime(current_time)
return CoSimIO.Info()
import KratosMultiphysics.MappingApplication as KratosMapping
# create the Kratos ModelParts that contain the mesh
model = KM.Model()
model_part_origin = model.CreateModelPart("mp_origin")
model_part_destination = model.CreateModelPart("mp_destination")
# allocate memory
model_part_origin.AddNodalSolutionStepVariable(KM.TEMPERATURE)
model_part_destination.AddNodalSolutionStepVariable(KM.AMBIENT_TEMPERATURE)
model_part_origin.AddNodalSolutionStepVariable(KM.VELOCITY)
model_part_destination.AddNodalSolutionStepVariable(KM.MESH_VELOCITY)
# connect to CoSimIO
connection_settings = CoSimIO.Info()
connection_settings.SetString("connection_name", "mesh_mapping")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
if info.GetInt("connection_status") != CoSimIO.ConnectionStatus.Connected:
raise Exception("Connecting failed")
# import meshes
import_mesh_info_o = CoSimIO.Info()
import_mesh_info_o.SetString("connection_name", "mesh_mapping")
import_mesh_info_o.SetString("identifier", "mesh_origin")
CoSimIO.ImportMesh(import_mesh_info_o, model_part_origin)
import_mesh_info_d = CoSimIO.Info()
import_mesh_info_d.SetString("connection_name", "mesh_mapping")
import_mesh_info_d.SetString("identifier", "mesh_destination")
from KratosMultiphysics.CoSimulationApplication import CoSimIO
connection_settings = CoSimIO.Info()
connection_settings.SetString("my_name", "impExp")
connection_settings.SetString("connect_to", "ExpImp")
connection_settings.SetInt("echo_level", 0)
info = CoSimIO.Connect(connection_settings)
connection_name = info.GetString("connection_name")
if info.GetInt("connection_status") != CoSimIO.ConnectionStatus.Connected:
raise Exception("Connecting failed")
import_info = CoSimIO.Info()
import_info.SetString("connection_name", connection_name)
import_info.SetString("identifier", "data_exchange_1")
imported_values = CoSimIO.DoubleVector()
CoSimIO.ImportData(import_info, imported_values)
# print(imported_values)
export_info = CoSimIO.Info()
export_info.SetString("connection_name", connection_name)
export_info.SetString("identifier", "data_exchange_2")
CoSimIO.ExportData(export_info, imported_values)
disconnect_settings = CoSimIO.Info()
disconnect_settings.SetString("connection_name", connection_name)
info = CoSimIO.Disconnect(disconnect_settings)
if info.GetInt("connection_status") != CoSimIO.ConnectionStatus.Disconnected:
raise Exception("Disconnecting failed")
def Initialize(self):
super().Initialize()
connection_settings = CoSimIO.InfoFromParameters(
self.project_parameters["co_sim_settings"]["io_settings"])
info = CoSimIO.Connect(connection_settings)
self.connection_name = info.GetString("connection_name")
if info.GetInt(
"connection_status") != CoSimIO.ConnectionStatus.Connected:
raise Exception("Connecting failed!")
## specifying which fields belong to which identifier when im-/exporting data
self.data_comm_settings = {}
for field_settings in chain(
self.project_parameters["co_sim_settings"]
["communication_settings"]["export_fields"],
self.project_parameters["co_sim_settings"]
["communication_settings"]["import_fields"]):
identifier = field_settings["identifier"].GetString()
model_part_name = field_settings["model_part_name"].GetString()
model_part = self.model[model_part_name]
variable_name = field_settings["variable_name"].GetString()
variable = KM.KratosGlobals.GetVariable(variable_name)
self.data_comm_settings[identifier] = {
"model_part": model_part,
"variable": variable
}
# declaring in place the functions that are registered by the CoSimIO
def _ImportData(info):
identifier = info.GetString("identifier")
model_part = self.data_comm_settings[identifier]["model_part"]
variable = self.data_comm_settings[identifier]["variable"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", identifier)
CoSimIO.ImportData(info, model_part, variable,
CoSimIO.DataLocation.NodeHistorical)
return CoSimIO.Info()
def _ExportData(info):
identifier = info.GetString("identifier")
model_part = self.data_comm_settings[identifier]["model_part"]
variable = self.data_comm_settings[identifier]["variable"]
info = CoSimIO.Info()
info.SetString("connection_name", self.connection_name)
info.SetString("identifier", identifier)
CoSimIO.ExportData(info, model_part, variable,
CoSimIO.DataLocation.NodeHistorical)
return CoSimIO.Info()
def _ExportMesh(info):
model_part_name = info.GetString("identifier")
export_info = CoSimIO.Info()
export_info.SetString("connection_name", self.connection_name)
export_info.SetString("identifier",
model_part_name.replace(".", "-"))
CoSimIO.ExportMesh(export_info, self.model[model_part_name])
return CoSimIO.Info()
def _AdvanceInTime(info):
current_time = info.GetDouble("current_time")
self.time = self._GetSolver().AdvanceInTime(current_time)
return CoSimIO.Info()
def _InitializeSolutionStep(info):
self.InitializeSolutionStep()
return CoSimIO.Info()
def _Predict(info):
self._GetSolver().Predict()
return CoSimIO.Info()
def _SolveSolutionStep(info):
self._GetSolver().SolveSolutionStep()
return CoSimIO.Info()
def _FinalizeSolutionStep(info):
self.FinalizeSolutionStep()
return CoSimIO.Info()
def _OutputSolutionStep(info):
self.OutputSolutionStep()
return CoSimIO.Info()
register_info = CoSimIO.Info()
register_info.SetString("connection_name", self.connection_name)
register_info.SetString("function_name", "ImportData")
CoSimIO.Register(register_info, _ImportData)
register_info.SetString("function_name", "ExportData")
CoSimIO.Register(register_info, _ExportData)
register_info.SetString("function_name", "ExportMesh")
CoSimIO.Register(register_info, _ExportMesh)
register_info.SetString("function_name", "AdvanceInTime")
CoSimIO.Register(register_info, _AdvanceInTime)
register_info.SetString("function_name", "InitializeSolutionStep")
CoSimIO.Register(register_info, _InitializeSolutionStep)
register_info.SetString("function_name", "Predict")
CoSimIO.Register(register_info, _Predict)
register_info.SetString("function_name", "SolveSolutionStep")
CoSimIO.Register(register_info, _SolveSolutionStep)
register_info.SetString("function_name", "FinalizeSolutionStep")
CoSimIO.Register(register_info, _FinalizeSolutionStep)
register_info.SetString("function_name", "OutputSolutionStep")
CoSimIO.Register(register_info, _OutputSolutionStep)
def RunSolutionLoop(self):
# running remote controlled simulation
# deliberately not calling baseclass as this is the remote controlled case
run_info = CoSimIO.Info()
run_info.SetString("connection_name", self.connection_name)
CoSimIO.Run(run_info)
def _OutputSolutionStep(info):
self.OutputSolutionStep()
return CoSimIO.Info()
def _FinalizeSolutionStep(info):
self.FinalizeSolutionStep()
return CoSimIO.Info()
def _SolveSolutionStep(info):
self._GetSolver().SolveSolutionStep()
return CoSimIO.Info()