diff --git a/NumLib/TimeStepping/Algorithms/FixedTimeStepping.cpp b/NumLib/TimeStepping/Algorithms/FixedTimeStepping.cpp
index 5178f8e001ee2104f778b0fc93f3b979852f5fcd..55899e6c0dbfddafca4b41cf53bfd21a9d4d7214 100644
--- a/NumLib/TimeStepping/Algorithms/FixedTimeStepping.cpp
+++ b/NumLib/TimeStepping/Algorithms/FixedTimeStepping.cpp
@@ -124,12 +124,12 @@ void incorporateFixedTimesForOutput(
begin(delta_ts), begin(delta_ts) + interval_number, t_initial);
auto const upper_bound = lower_bound + delta_ts[interval_number];
if (fixed_time_for_output - lower_bound <=
- std::numeric_limits<double>::epsilon())
+ TimeStep::minimalTimeStepSize)
{
continue;
}
if (upper_bound - fixed_time_for_output <=
- std::numeric_limits<double>::epsilon())
+ TimeStep::minimalTimeStepSize)
{
continue;
}
diff --git a/NumLib/TimeStepping/Algorithms/FixedTimeStepping.h b/NumLib/TimeStepping/Algorithms/FixedTimeStepping.h
index e24cebb7e34c28b45ea872d06723c5919edaff71..89f4588bec316e513dc6a6ee9638efc4c80a5b26 100644
--- a/NumLib/TimeStepping/Algorithms/FixedTimeStepping.h
+++ b/NumLib/TimeStepping/Algorithms/FixedTimeStepping.h
@@ -55,13 +55,6 @@ public:
NumLib::TimeStep& ts_previous,
NumLib::TimeStep& ts_current) override;
- /// reset the current step size from the previous time
- void resetCurrentTimeStep(const double dt, TimeStep& /*ts_previous*/,
- TimeStep& /*ts_current*/) override
- {
- _dt_vector.push_back(dt);
- }
-
private:
/// a vector of time step sizes
std::vector<double> _dt_vector;
diff --git a/NumLib/TimeStepping/TimeStep.h b/NumLib/TimeStepping/TimeStep.h
index 388ea05096c90cf9e71e30d686ef31b02bc72f29..d712d4453a9c3250c1971b992f3859d873235b37 100644
--- a/NumLib/TimeStepping/TimeStep.h
+++ b/NumLib/TimeStepping/TimeStep.h
@@ -96,6 +96,9 @@ public:
void setAccepted(bool const accepted) { _is_accepted = accepted; }
bool isAccepted() const { return _is_accepted; }
+ static constexpr double minimalTimeStepSize =
+ 1000 * std::numeric_limits<double>::epsilon();
+
private:
/// previous time step
double _previous;
diff --git a/ProcessLib/Output/OutputDataSpecification.cpp b/ProcessLib/Output/OutputDataSpecification.cpp
index edab0692af3a4f3aff818ce39e42b2ae96dc6632..40dea119f21d7e8ab3a2012aad8598e9ca30a2f1 100644
--- a/ProcessLib/Output/OutputDataSpecification.cpp
+++ b/ProcessLib/Output/OutputDataSpecification.cpp
@@ -10,6 +10,8 @@
#include "OutputDataSpecification.h"
+#include "NumLib/TimeStepping/TimeStep.h"
+
namespace ProcessLib
{
OutputDataSpecification::OutputDataSpecification(
@@ -49,11 +51,12 @@ bool OutputDataSpecification::isOutputStep(int timestep,
{
auto isFixedOutputStep = [this](double const time) -> bool
{
- auto const fixed_output_time = std::lower_bound(
- cbegin(fixed_output_times), cend(fixed_output_times), time);
- return ((fixed_output_time != cend(fixed_output_times)) &&
- (std::abs(*fixed_output_time - time) <
- std::numeric_limits<double>::epsilon()));
+ return std::any_of(cbegin(fixed_output_times), cend(fixed_output_times),
+ [&](auto fixed_output_time)
+ {
+ return (std::abs(fixed_output_time - time) <
+ NumLib::TimeStep::minimalTimeStepSize);
+ });
};
auto isPairRepeatsEachTimeStepOutput = [this](int timestep) -> bool
diff --git a/ProcessLib/SteadyStateDiffusion/Tests.cmake b/ProcessLib/SteadyStateDiffusion/Tests.cmake
index c18b2d90fd25850d88d79dab9751977f883ca242..c59737a3f2bcf94225bfaff9557dc996291f313b 100644
--- a/ProcessLib/SteadyStateDiffusion/Tests.cmake
+++ b/ProcessLib/SteadyStateDiffusion/Tests.cmake
@@ -143,6 +143,18 @@ foreach(mesh_size 1e4 2e4 3e4 4e4 5e4 1e5 1e6)
)
endforeach()
+# Test FixedTimeStepping and fixed output times
+AddTest(
+ NAME SteadyStateDiffusion_square_1x1_quad_1e1_FixedTimeStepping_FixedOutputTimes
+ PATH Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes
+ EXECUTABLE ogs
+ EXECUTABLE_ARGS square_1e1-fixed_timestepping-fixed_output_times.prj -m ../
+ TESTER vtkdiff
+ REQUIREMENTS NOT OGS_USE_MPI
+ DIFF_DATA
+ GLOB square_1e1_ts_*.vtu pressure pressure 1e-15 1e-15
+)
+
# Quadratic hex element.
AddTest(
NAME SteadyStateDiffusion_cube_1x1x1_1e0_QuadraticHex
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1-fixed_timestepping-fixed_output_times.prj b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1-fixed_timestepping-fixed_output_times.prj
new file mode 100644
index 0000000000000000000000000000000000000000..ffc995c5827faf4f388075f5cbf4d8133404f4d5
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1-fixed_timestepping-fixed_output_times.prj
@@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="ISO-8859-1"?>
+<OpenGeoSysProject>
+ <mesh>square_1x1_quad_1e1.vtu</mesh>
+ <geometry>square_1x1.gml</geometry>
+ <processes>
+ <process>
+ <name>SteadyStateDiffusion</name>
+ <type>STEADY_STATE_DIFFUSION</type>
+ <integration_order>2</integration_order>
+ <process_variables>
+ <process_variable>pressure</process_variable>
+ </process_variables>
+ <secondary_variables>
+ <secondary_variable internal_name="darcy_velocity" output_name="v"/>
+ </secondary_variables>
+ </process>
+ </processes>
+ <media>
+ <medium id="0">
+ <phases/>
+ <properties>
+ <property>
+ <name>diffusion</name>
+ <type>Constant</type>
+ <value>1</value>
+ </property>
+ <property>
+ <name>reference_temperature</name>
+ <type>Constant</type>
+ <value>293.15</value>
+ </property>
+ </properties>
+ </medium>
+ </media>
+ <time_loop>
+ <processes>
+ <process ref="SteadyStateDiffusion">
+ <nonlinear_solver>basic_picard</nonlinear_solver>
+ <convergence_criterion>
+ <type>DeltaX</type>
+ <norm_type>NORM2</norm_type>
+ <abstol>1.e-6</abstol>
+ </convergence_criterion>
+ <time_discretization>
+ <type>BackwardEuler</type>
+ </time_discretization>
+ <time_stepping>
+ <type>FixedTimeStepping</type>
+ <t_initial>0</t_initial>
+ <t_end>1</t_end>
+ <timesteps>
+ <pair>
+ <repeat>100</repeat>
+ <delta_t>1.e-2</delta_t>
+ </pair>
+ </timesteps>
+ </time_stepping>
+ </process>
+ </processes>
+ <output>
+ <type>VTK</type>
+ <prefix>square_1e1</prefix>
+ <timesteps>
+ <pair>
+ <repeat>1</repeat>
+ <each_steps>1000</each_steps>
+ </pair>
+ </timesteps>
+ <fixed_output_times>.1 .2 .3 .4 .5 .6 .7 .8 .9 1</fixed_output_times>
+ <variables>
+ <variable> pressure </variable>
+ <variable> v </variable>
+ </variables>
+ <suffix>_ts_{:0>3timestep}_t_{:time}</suffix>
+ </output>
+ </time_loop>
+ <parameters>
+ <parameter>
+ <name>p0</name>
+ <type>Constant</type>
+ <value>0</value>
+ </parameter>
+ <parameter>
+ <name>p_Dirichlet_left</name>
+ <type>Constant</type>
+ <value>1</value>
+ </parameter>
+ <parameter>
+ <name>p_Dirichlet_right</name>
+ <type>Constant</type>
+ <value>-1</value>
+ </parameter>
+ </parameters>
+ <process_variables>
+ <process_variable>
+ <name>pressure</name>
+ <components>1</components>
+ <order>1</order>
+ <initial_condition>p0</initial_condition>
+ <boundary_conditions>
+ <boundary_condition>
+ <geometrical_set>square_1x1_geometry</geometrical_set>
+ <geometry>left</geometry>
+ <type>Dirichlet</type>
+ <parameter>p_Dirichlet_left</parameter>
+ </boundary_condition>
+ <boundary_condition>
+ <geometrical_set>square_1x1_geometry</geometrical_set>
+ <geometry>right</geometry>
+ <type>Dirichlet</type>
+ <parameter>p_Dirichlet_right</parameter>
+ </boundary_condition>
+ </boundary_conditions>
+ </process_variable>
+ </process_variables>
+ <nonlinear_solvers>
+ <nonlinear_solver>
+ <name>basic_picard</name>
+ <type>Picard</type>
+ <max_iter>10</max_iter>
+ <linear_solver>general_linear_solver</linear_solver>
+ </nonlinear_solver>
+ </nonlinear_solvers>
+ <linear_solvers>
+ <linear_solver>
+ <name>general_linear_solver</name>
+ <lis>-i cg -p jacobi -tol 1e-16 -maxiter 10000</lis>
+ <eigen>
+ <solver_type>CG</solver_type>
+ <precon_type>DIAGONAL</precon_type>
+ <max_iteration_step>10000</max_iteration_step>
+ <error_tolerance>1e-16</error_tolerance>
+ </eigen>
+ <petsc>
+ <prefix>gw</prefix>
+ <parameters>-gw_ksp_type cg -gw_pc_type bjacobi -gw_ksp_rtol 1e-16 -gw_ksp_max_it 10000</parameters>
+ </petsc>
+ </linear_solver>
+ </linear_solvers>
+</OpenGeoSysProject>
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_000_t_0.000000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_000_t_0.000000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..19eb1ca3ed28a3fb54b7458de2d14b338dd8d775
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_000_t_0.000000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64" compressor="vtkZLibDataCompressor">
+ <UnstructuredGrid>
+ <FieldData>
+ <DataArray type="Int8" Name="OGS_VERSION" NumberOfTuples="19" format="appended" RangeMin="45" RangeMax="103" offset="0" />
+ </FieldData>
+ <Piece NumberOfPoints="16" NumberOfCells="9" >
+ <PointData>
+ <DataArray type="Float64" Name="pressure" format="appended" RangeMin="0" RangeMax="0" offset="80" />
+ <DataArray type="Float64" Name="v" NumberOfComponents="2" format="appended" RangeMin="0" RangeMax="0" offset="140" />
+ </PointData>
+ <CellData>
+ </CellData>
+ <Points>
+ <DataArray type="Float64" Name="Points" NumberOfComponents="3" format="appended" RangeMin="0" RangeMax="1.4142135624" offset="200" />
+ </Points>
+ <Cells>
+ <DataArray type="Int64" Name="connectivity" format="appended" RangeMin="" RangeMax="" offset="344" />
+ <DataArray type="Int64" Name="offsets" format="appended" RangeMin="" RangeMax="" offset="480" />
+ <DataArray type="UInt8" Name="types" format="appended" RangeMin="" RangeMax="" offset="568" />
+ </Cells>
+ </Piece>
+ </UnstructuredGrid>
+ <AppendedData encoding="base64">
+ _AQAAAAAAAAAAgAAAAAAAABMAAAAAAAAAGwAAAAAAAAA=eF4z0zPVM9Q1NLLUTU81Mk41NkxKBgAp6wSuAQAAAAAAAAAAgAAAAAAAAIAAAAAAAAAADAAAAAAAAAA=eF5jYBhYAAAAgAABAQAAAAAAAAAAgAAAAAAAAAABAAAAAAAADAAAAAAAAAA=eF5jYBjZAAABAAABAQAAAAAAAAAAgAAAAAAAAIABAAAAAAAASQAAAAAAAAA=eF5jYMAO/ENB4Ko9ungEWPwphjgEfMAhjmkejI8uDjMfu/0fcIhjugumDl0cxsfujw84xBHyMBaqOz5gmI8ujspHiAMAt187AQ==AQAAAAAAAAAAgAAAAAAAACABAAAAAAAARQAAAAAAAAA=eF5djDkOwCAAw6AXbenx/98yEC/OYsmyUspcDfdwk1/CQx1+DZs6fuiv8JSnv9Xh+e3q+KF/w0ee/lOH5/dXNwBz+AEPAQAAAAAAAAAAgAAAAAAAAEgAAAAAAAAAIAAAAAAAAAA=eF5jYYAADijNA6UFoLQIlJaA0jJQWgFKq0BpABToALU=AQAAAAAAAAAAgAAAAAAAAAkAAAAAAAAACwAAAAAAAAA=eF7j5IQCAAGeAFI=
+ </AppendedData>
+</VTKFile>
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_010_t_0.100000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_010_t_0.100000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_010_t_0.100000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64" compressor="vtkZLibDataCompressor">
+ <UnstructuredGrid>
+ <FieldData>
+ <DataArray type="Int8" Name="OGS_VERSION" NumberOfTuples="19" format="appended" RangeMin="45" RangeMax="103" offset="0" />
+ </FieldData>
+ <Piece NumberOfPoints="16" NumberOfCells="9" >
+ <PointData>
+ <DataArray type="Float64" Name="pressure" format="appended" RangeMin="-1" RangeMax="1" offset="80" />
+ <DataArray type="Float64" Name="v" NumberOfComponents="2" format="appended" RangeMin="2" RangeMax="2" offset="176" />
+ </PointData>
+ <CellData>
+ </CellData>
+ <Points>
+ <DataArray type="Float64" Name="Points" NumberOfComponents="3" format="appended" RangeMin="0" RangeMax="1.4142135624" offset="424" />
+ </Points>
+ <Cells>
+ <DataArray type="Int64" Name="connectivity" format="appended" RangeMin="" RangeMax="" offset="568" />
+ <DataArray type="Int64" Name="offsets" format="appended" RangeMin="" RangeMax="" offset="704" />
+ <DataArray type="UInt8" Name="types" format="appended" RangeMin="" RangeMax="" offset="792" />
+ </Cells>
+ </Piece>
+ </UnstructuredGrid>
+ <AppendedData encoding="base64">
+ _AQAAAAAAAAAAgAAAAAAAABMAAAAAAAAAGwAAAAAAAAA=eF4z0zPVM9Q1NLLUTU81Mk41NkxKBgAp6wSuAQAAAAAAAAAAgAAAAAAAAIAAAAAAAAAAJwAAAAAAAAA=eF5jYACBD/aJoSBw1T4JQu9ngIjDaLh8Ig75JAL6YfLo+gFhPyZtAQAAAAAAAAAAgAAAAAAAAAABAAAAAAAAmQAAAAAAAAA=eF5jZAADh5Cz8+JE1BptGKB8qdRDTtc318L5q3wiXlRtm72HEcr/+h8E5u/5B6b/20OEJ+z5D+WLOPt2r7ZfAdd/wihx4eubdXD5pWDzVsP1vwdT/XDzvxW1xOyYOBeuX0NYbNe8t/P2wPhX37x0TRTaCZcPgLofZl4G1P1/ofxwNZ0S29tL9/yC8uNmbrjwNWf6HgCRF3l6AQAAAAAAAAAAgAAAAAAAAIABAAAAAAAASQAAAAAAAAA=eF5jYMAO/ENB4Ko9ungEWPwphjgEfMAhjmkejI8uDjMfu/0fcIhjugumDl0cxsfujw84xBHyMBaqOz5gmI8ujspHiAMAt187AQ==AQAAAAAAAAAAgAAAAAAAACABAAAAAAAARQAAAAAAAAA=eF5djDkOwCAAw6AXbenx/98yEC/OYsmyUspcDfdwk1/CQx1+DZs6fuiv8JSnv9Xh+e3q+KF/w0ee/lOH5/dXNwBz+AEPAQAAAAAAAAAAgAAAAAAAAEgAAAAAAAAAIAAAAAAAAAA=eF5jYYAADijNA6UFoLQIlJaA0jJQWgFKq0BpABToALU=AQAAAAAAAAAAgAAAAAAAAAkAAAAAAAAACwAAAAAAAAA=eF7j5IQCAAGeAFI=
+ </AppendedData>
+</VTKFile>
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_020_t_0.200000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_020_t_0.200000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_020_t_0.200000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64" compressor="vtkZLibDataCompressor">
+ <UnstructuredGrid>
+ <FieldData>
+ <DataArray type="Int8" Name="OGS_VERSION" NumberOfTuples="19" format="appended" RangeMin="45" RangeMax="103" offset="0" />
+ </FieldData>
+ <Piece NumberOfPoints="16" NumberOfCells="9" >
+ <PointData>
+ <DataArray type="Float64" Name="pressure" format="appended" RangeMin="-1" RangeMax="1" offset="80" />
+ <DataArray type="Float64" Name="v" NumberOfComponents="2" format="appended" RangeMin="2" RangeMax="2" offset="176" />
+ </PointData>
+ <CellData>
+ </CellData>
+ <Points>
+ <DataArray type="Float64" Name="Points" NumberOfComponents="3" format="appended" RangeMin="0" RangeMax="1.4142135624" offset="424" />
+ </Points>
+ <Cells>
+ <DataArray type="Int64" Name="connectivity" format="appended" RangeMin="" RangeMax="" offset="568" />
+ <DataArray type="Int64" Name="offsets" format="appended" RangeMin="" RangeMax="" offset="704" />
+ <DataArray type="UInt8" Name="types" format="appended" RangeMin="" RangeMax="" offset="792" />
+ </Cells>
+ </Piece>
+ </UnstructuredGrid>
+ <AppendedData encoding="base64">
+ _AQAAAAAAAAAAgAAAAAAAABMAAAAAAAAAGwAAAAAAAAA=eF4z0zPVM9Q1NLLUTU81Mk41NkxKBgAp6wSuAQAAAAAAAAAAgAAAAAAAAIAAAAAAAAAAJwAAAAAAAAA=eF5jYACBD/aJoSBw1T4JQu9ngIjDaLh8Ig75JAL6YfLo+gFhPyZtAQAAAAAAAAAAgAAAAAAAAAABAAAAAAAAmQAAAAAAAAA=eF5jZAADh5Cz8+JE1BptGKB8qdRDTtc318L5q3wiXlRtm72HEcr/+h8E5u/5B6b/20OEJ+z5D+WLOPt2r7ZfAdd/wihx4eubdXD5pWDzVsP1vwdT/XDzvxW1xOyYOBeuX0NYbNe8t/P2wPhX37x0TRTaCZcPgLofZl4G1P1/ofxwNZ0S29tL9/yC8uNmbrjwNWf6HgCRF3l6AQAAAAAAAAAAgAAAAAAAAIABAAAAAAAASQAAAAAAAAA=eF5jYMAO/ENB4Ko9ungEWPwphjgEfMAhjmkejI8uDjMfu/0fcIhjugumDl0cxsfujw84xBHyMBaqOz5gmI8ujspHiAMAt187AQ==AQAAAAAAAAAAgAAAAAAAACABAAAAAAAARQAAAAAAAAA=eF5djDkOwCAAw6AXbenx/98yEC/OYsmyUspcDfdwk1/CQx1+DZs6fuiv8JSnv9Xh+e3q+KF/w0ee/lOH5/dXNwBz+AEPAQAAAAAAAAAAgAAAAAAAAEgAAAAAAAAAIAAAAAAAAAA=eF5jYYAADijNA6UFoLQIlJaA0jJQWgFKq0BpABToALU=AQAAAAAAAAAAgAAAAAAAAAkAAAAAAAAACwAAAAAAAAA=eF7j5IQCAAGeAFI=
+ </AppendedData>
+</VTKFile>
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_030_t_0.300000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_030_t_0.300000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_030_t_0.300000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64" compressor="vtkZLibDataCompressor">
+ <UnstructuredGrid>
+ <FieldData>
+ <DataArray type="Int8" Name="OGS_VERSION" NumberOfTuples="19" format="appended" RangeMin="45" RangeMax="103" offset="0" />
+ </FieldData>
+ <Piece NumberOfPoints="16" NumberOfCells="9" >
+ <PointData>
+ <DataArray type="Float64" Name="pressure" format="appended" RangeMin="-1" RangeMax="1" offset="80" />
+ <DataArray type="Float64" Name="v" NumberOfComponents="2" format="appended" RangeMin="2" RangeMax="2" offset="176" />
+ </PointData>
+ <CellData>
+ </CellData>
+ <Points>
+ <DataArray type="Float64" Name="Points" NumberOfComponents="3" format="appended" RangeMin="0" RangeMax="1.4142135624" offset="424" />
+ </Points>
+ <Cells>
+ <DataArray type="Int64" Name="connectivity" format="appended" RangeMin="" RangeMax="" offset="568" />
+ <DataArray type="Int64" Name="offsets" format="appended" RangeMin="" RangeMax="" offset="704" />
+ <DataArray type="UInt8" Name="types" format="appended" RangeMin="" RangeMax="" offset="792" />
+ </Cells>
+ </Piece>
+ </UnstructuredGrid>
+ <AppendedData encoding="base64">
+ _AQAAAAAAAAAAgAAAAAAAABMAAAAAAAAAGwAAAAAAAAA=eF4z0zPVM9Q1NLLUTU81Mk41NkxKBgAp6wSuAQAAAAAAAAAAgAAAAAAAAIAAAAAAAAAAJwAAAAAAAAA=eF5jYACBD/aJoSBw1T4JQu9ngIjDaLh8Ig75JAL6YfLo+gFhPyZtAQAAAAAAAAAAgAAAAAAAAAABAAAAAAAAmQAAAAAAAAA=eF5jZAADh5Cz8+JE1BptGKB8qdRDTtc318L5q3wiXlRtm72HEcr/+h8E5u/5B6b/20OEJ+z5D+WLOPt2r7ZfAdd/wihx4eubdXD5pWDzVsP1vwdT/XDzvxW1xOyYOBeuX0NYbNe8t/P2wPhX37x0TRTaCZcPgLofZl4G1P1/ofxwNZ0S29tL9/yC8uNmbrjwNWf6HgCRF3l6AQAAAAAAAAAAgAAAAAAAAIABAAAAAAAASQAAAAAAAAA=eF5jYMAO/ENB4Ko9ungEWPwphjgEfMAhjmkejI8uDjMfu/0fcIhjugumDl0cxsfujw84xBHyMBaqOz5gmI8ujspHiAMAt187AQ==AQAAAAAAAAAAgAAAAAAAACABAAAAAAAARQAAAAAAAAA=eF5djDkOwCAAw6AXbenx/98yEC/OYsmyUspcDfdwk1/CQx1+DZs6fuiv8JSnv9Xh+e3q+KF/w0ee/lOH5/dXNwBz+AEPAQAAAAAAAAAAgAAAAAAAAEgAAAAAAAAAIAAAAAAAAAA=eF5jYYAADijNA6UFoLQIlJaA0jJQWgFKq0BpABToALU=AQAAAAAAAAAAgAAAAAAAAAkAAAAAAAAACwAAAAAAAAA=eF7j5IQCAAGeAFI=
+ </AppendedData>
+</VTKFile>
diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_040_t_0.400000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_040_t_0.400000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_040_t_0.400000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
+<VTKFile type="UnstructuredGrid" version="1.0" byte_order="LittleEndian" header_type="UInt64" compressor="vtkZLibDataCompressor">
+ <UnstructuredGrid>
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_050_t_0.500000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_050_t_0.500000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_050_t_0.500000.vtu
@@ -0,0 +1,27 @@
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_060_t_0.600000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_060_t_0.600000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_060_t_0.600000.vtu
@@ -0,0 +1,27 @@
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_070_t_0.700000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_070_t_0.700000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_070_t_0.700000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_080_t_0.800000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_080_t_0.800000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_080_t_0.800000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_090_t_0.900000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_090_t_0.900000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_090_t_0.900000.vtu
@@ -0,0 +1,27 @@
+<?xml version="1.0"?>
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diff --git a/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_100_t_1.000000.vtu b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_100_t_1.000000.vtu
new file mode 100644
index 0000000000000000000000000000000000000000..a9fe2b32c35cfc8736d5d4f1b64fcf8e6f837108
--- /dev/null
+++ b/Tests/Data/Elliptic/square_1x1_SteadyStateDiffusion/FixedTimeSteppingFixedOutputTimes/square_1e1_ts_100_t_1.000000.vtu
@@ -0,0 +1,27 @@
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