Datasets: 
 seed (int8_t) – Pseudorandom number generator seed.
 energy_mode (char[]) – Energy mode of the run, either
‘continuousenergy’ or ‘multigroup’.
 run_mode (char[]) – Run mode used, either ‘eigenvalue’ or
‘fixed source’.
 n_particles (int8_t) – Number of particles used per generation.
 n_batches (int) – Number of batches to simulate.
 current_batch (int) – The number of batches already simulated.
 n_inactive (int) – Number of inactive batches. Only present
when run_mode is ‘eigenvalue’.
 generations_per_batch (int) – Number of generations per
batch. Only present when run_mode is ‘eigenvalue’.
 k_generation (double[]) – keffective for each generation
simulated.
 entropy (double[]) – Shannon entropy for each generation
simulated.
 k_col_abs (double) – Sum of product of collision/absorption
estimates of keffective.
 k_col_tra (double) – Sum of product of
collision/tracklength estimates of keffective.
 k_abs_tra (double) – Sum of product of
absorption/tracklength estimates of keffective.
 k_combined (double[2]) – Mean and standard deviation of a
combined estimate of keffective.
 n_realizations (int) – Number of realizations for global
tallies.
 global_tallies (double[][2]) – Accumulated sum and
sumofsquares for each global tally.
 source_bank (Compound type) – Source bank information for each
particle. The compound type has fields
wgt , xyz , uvw ,
E , g , and delayed_group , which represent the weight,
position, direction, energy, energy group, and delayed_group of the
source particle, respectively. Only present when run_mode is
‘eigenvalue’.
