Unexpected change in performance and correctness check output since tag v5.5.0

[gshipman]

Hi folks,

Using v.5.5.0 I get output from:

mpirun -n 112 --map-by numa --bind-to core ./test_driver -c 20 -B global -d 14,14,14 --sweep_kernel=0 --benchmark_problem=1 -t 1

=================================================================
Test driver finished time steps
=================================================================
Average throughput of single iteration of iterative solver was 6.30546e+09 unknowns calculated per second.
Throughput of iterative solver was 5.81149e+08 unknowns calculated per second.
(average throughput of single iteration * # iterations for solver to produce answer

Total number of flux solver iterations for run: 217
Total wall time for run: 167.098 seconds.
=================================================================

RESULT CHECK PASSED: Energy check (this is relative to total energy) 1.04324e-15 within tolerance of +/- 1e-09; check './unnamed.csv' for tally details

Compared to latest head I get output from:

mpirun -n 112 --map-by numa --bind-to core ./test_driver -c 20 -B global -d 14,14,14 --sweep_kernel=0 --benchmark_problem=1 -t 1

=================================================================
Test driver finished time steps
Simulation time progressed: 3.503887e-03
Number of cycles: 20
Total wall time for run: 7.056378e+01 seconds.
=================================================================

=================================================================
Test driver throughput statistics

Definition of flux solver throughput:
  # unknowns calculated * simulation time progressed / wall time
Definition of single flux iteration throughput:
  # flux solver throughput / number of flux iterations taken

=================================================================
Problem throughput: 2.410993e+05
=================================================================

Is this expected change in behavior?
Is there an easy way of comparing these two runs in terms of performance?