Dear all,
I've been doing some scaling tests on my code. When I look at time (or % of
time) spent at each stage in libMesh log I see that the
enforce_constraints_exactly stage in DofMap is scaling very bad. I was
wondering if anyone can comment.
Here is my EquationSystems.print_info():
EquationSystems
n_systems()=2
System #0, "elasticity_system"
Type "TransientLinearImplicit"
Variables={ "u" "v" }
Finite Element Types="LAGRANGE", "JACOBI_20_00"
Infinite Element Mapping="CARTESIAN"
Approximation Orders="FIRST", "THIRD"
n_dofs()=48660
n_local_dofs()=930
n_constrained_dofs()=1048
n_local_constrained_dofs()=56
n_vectors()=3
n_matrices()=1
DofMap Sparsity
Average On-Processor Bandwidth <= 13.6478
Average Off-Processor Bandwidth <= 0.904233
Maximum On-Processor Bandwidth <= 20
Maximum Off-Processor Bandwidth <= 16
DofMap Constraints
Number of DoF Constraints = 1048
Average DoF Constraint Length= 0
Number of Node Constraints = 0
System #1, "fracture_system"
Type "TransientNonlinearImplicit"
Variables="psi"
Finite Element Types="LAGRANGE", "JACOBI_20_00"
Infinite Element Mapping="CARTESIAN"
Approximation Orders="FIRST", "THIRD"
n_dofs()=24330
n_local_dofs()=465
n_constrained_dofs()=167
n_local_constrained_dofs()=0
n_vectors()=3
n_matrices()=1
DofMap Sparsity
Average On-Processor Bandwidth <= 6.82388
Average Off-Processor Bandwidth <= 0.452117
Maximum On-Processor Bandwidth <= 10
Maximum Off-Processor Bandwidth <= 8
DofMap Constraints
Number of DoF Constraints = 167
Average DoF Constraint Length= 0
Number of Node Constraints = 0
and here is the how scaling looks for every stage that took > 1% of time:
Best,
Ata
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