class EvoArg evo_arg = {
int traj_start = 0
int gauge_unload_period = 0
int gauge_configurations = 0
int io_concurrency = 0
int hdw_xcsum = 0
int hdw_rcsum = 0
int reproduce_interval = 0
string ensemble_id = "id"
string ensemble_label = "label"
string creator = "creator"
string gauge_file_stem = "ckpoint_lat"
string rng_file_stem = "ckpoint_rng"
string plaquette_stem = "plaq"
string pbp_stem = ""
string evo_stem = "hmd"
string w_spect_directory = ""
string work_directory = ""
int measure_pbp = 0
int measure_w_spect_interval = 0
}