Calculator app improvements

[roystgnr]

I've been using this for various tests recently, and both the infrastructure upgrades and the app upgrades are likely to be useful to others too.

[jwpeterson]

The "Test with threads" error here seems to be in an example unrelated to the calculator app:

***************************************************************
* Running Example vector_fe_ex6:
*  mpiexec -np 2 ./example-opt dim=2 element_type=TRI6 boundary_condition=neumann 
***************************************************************
 
 Mesh Information:
  elem_dimensions()={2}
  elem_default_orders()={2}
  supported_nodal_order()=2
  spatial_dimension()=2
  n_nodes()=961
    n_local_nodes()=496
  n_elem()=450
    n_local_elem()=225
    n_active_elem()=450
  n_subdomains()=1
  n_elemsets()=0
  n_partitions()=2
  n_processors()=2
  n_threads()=1
  processor_id()=0
  is_prepared()=true
  is_replicated()=true

 EquationSystems
  n_systems()=1
   System #0, "DivGrad"
    Type "LinearImplicit"
    Variables="u" "p" "l" 
    Finite Element Types="RAVIART_THOMAS" "MONOMIAL" "SCALAR" 
    Approximation Orders="FIRST" "CONSTANT" "FIRST" 
    n_dofs()=1156
    n_local_dofs()=585
    max(n_local_dofs())=585
    n_constrained_dofs()=0
    n_local_constrained_dofs()=0
    max(local unconstrained dofs)=585
    n_vectors()=1
    n_matrices()=1
    DofMap Sparsity
      Average  On-Processor Bandwidth <= 6.57439
      Average Off-Processor Bandwidth <= 1.09516
      Maximum  On-Processor Bandwidth <= 571
      Maximum Off-Processor Bandwidth <= 585
    DofMap Constraints
      Number of DoF Constraints = 0

libMesh terminatinglibMesh terminating:
ERROR: Bad FEType.family= RAVIART_THOMAS
[0] ../src/fe/fe_abstract.C, line 144, compiled Dec  2 2024 at 10:11:05

:
ERROR: Bad FEType.family= RAVIART_THOMAS
[1] ../src/fe/fe_abstract.C, line 144, compiled Dec  2 2024 at 10:11:05

[jwpeterson]

The "Test complex" failure seems to be an actual issue with std::complex and not just a -Werror issue:

./include/libmesh/fdm_gradient.h: In instantiation of 'GradType libMesh::FDMGradient<GradType>::operator()(const libMesh::FEMContext&, const libMesh::Point&, libMesh::Real) [with GradType = libMesh::VectorValue<std::complex<double> >; libMesh::Real = double]':
../src/apps/L2system.C:140:45:   required from here
./include/libmesh/fdm_gradient.h:55:43: error: no match for 'operator/' (operand types are 'std::complex<double>' and 'int')
   54 |     g(0) = (val(c, p+Point(_eps), time) -
      |            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
   55 |             val(c, p+Point(-_eps), time)) /
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
   56 |            2 / _eps;
      |            ~                               

[moosebuild]

Job Coverage, step Generate coverage on 130f9c2 wanted to post the following:

Coverage

	201eb6	#4027 130f9c
	Total	Total	+/-	New
Rate	62.33%	62.30%	-0.02%	28.77%
Hits	72660	72716	+56	42
Misses	43916	43995	+79	104

Diff coverage report

Full coverage report

Warnings

• New new line coverage rate 28.77% is less than the suggested 90.0%

This comment will be updated on new commits.