#### luna_123456

##### New member

Highlighted in bold are the changes that I made to the namelist and below is the error that I am seeing.

Here is my namelist.input:

&time_control

run_days = 0,

run_hours = 24,

run_minutes = 0,

run_seconds = 0,

start_year = 2011,2011,2011,2011,

start_month = 11,11,11,11,

start_day = 26, 26, 26, 26,

start_hour = 00, 00, 00, 00,

start_minute = 00, 00, 00, 00,

start_second = 00, 00, 00, 00,

end_year = 2011,2011,2011,2011,

end_month = 11,11,11,11,

end_day = 27, 27, 27, 27,

end_hour = 00, 00, 00, 00,

end_minute = 00, 00, 00, 00,

end_second = 00, 00, 00, 00,

interval_seconds = 21600,

input_from_file = .true.,.true.,.true.,.true.,

fine_input_stream = 0,0,0,0,

history_interval = 30, 30, 10, 10,

frames_per_outfile = 1,1,1,1,

restart = .false.,

restart_interval = 5000,

io_form_history = 2,

io_form_restart = 2,

io_form_input = 2,

io_form_boundary = 2,

**auxinput11_interval = 1,**

auxinput11_end_h = 99999,

auxinput11_end_h = 99999,

/

&domains

time_step = 36,

max_dom = 4,

s_we =

e_we =

s_sn =

e_sn =

s_vert =

e_vert = 110, 110, 110, 110,

num_metgrid_levels = 30,

p_top_requested = 10000.0000,

dx =

dy =

grid_id = 1, 2, 3, 4,

parent_id = 1, 1, 2, 3,

i_parent_start =

j_parent_start =

parent_grid_ratio = 1, 5, 5, 5,

parent_time_step_ratio = 1, 5, 5, 5,

feedback = 0,

/

&bdy_control

spec_bdy_width = 5,

spec_zone = 1,

relax_zone = 4,

specified = .true., .false.,.false., .false.,

nested = .false., .true., .true., .true.,

/

**&fdda**

obs_nudge_opt = 1,0,0,0,

max_obs = 150000,

fdda_start = 0., 0., 0., 0.,

fdda_end = 99999., 99999., 99999., 99999.,

obs_nudge_wind = 1,1,1,1,

obs_coef_wind = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_nudge_temp = 1,1,1,1,

obs_coef_temp = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_nudge_mois = 1,1,1,1,

obs_coef_mois = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_rinxy = 25.,5.,1.,0.2,

obs_rinsig = 0.1,

obs_twindo = 0.6666667,0.6666667,0.6666667,0.6666667,

obs_npfi = 10,

obs_ionf = 1, 2, 2, 2,

obs_idynin = 0,

obs_dtramp = 40.,

obs_prt_freq = 10, 10, 10, 10,

obs_prt_max = 10,

obs_ipf_errob = .true.,

obs_ipf_nudob = .true.,

obs_ipf_in4dob = .true.,

obs_ipf_init = .true.,

/

obs_nudge_opt = 1,0,0,0,

max_obs = 150000,

fdda_start = 0., 0., 0., 0.,

fdda_end = 99999., 99999., 99999., 99999.,

obs_nudge_wind = 1,1,1,1,

obs_coef_wind = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_nudge_temp = 1,1,1,1,

obs_coef_temp = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_nudge_mois = 1,1,1,1,

obs_coef_mois = 6.E-4,6.E-4,6.E-4,6.E-4,

obs_rinxy = 25.,5.,1.,0.2,

obs_rinsig = 0.1,

obs_twindo = 0.6666667,0.6666667,0.6666667,0.6666667,

obs_npfi = 10,

obs_ionf = 1, 2, 2, 2,

obs_idynin = 0,

obs_dtramp = 40.,

obs_prt_freq = 10, 10, 10, 10,

obs_prt_max = 10,

obs_ipf_errob = .true.,

obs_ipf_nudob = .true.,

obs_ipf_in4dob = .true.,

obs_ipf_init = .true.,

/

&namelist_quilt

nio_tasks_per_group = 0,

nio_groups = 0,

/

I am primarily getting errors of this nature:

Program received signal SIGSEGV: Segmentation fault - invalid memory reference.

Backtrace for this error:

#0 0x2B31FCA676F7

#1 0x2B31FCA67D3E

#2 0x2B31FD93B26F

#3 0x1E4F433 in __module_fddaobs_rtfdda_MOD_errob

#4 0x1E57072 in __module_fddaobs_driver_MOD_fddaobs_driver

#5 0x16E07AC in __module_first_rk_step_part2_MOD_first_rk_step_part2._omp_fn.13 at module_first_rk_step_part2.f90:?

#6 0x2B31FD088434

#7 0x2B31FD6F1E24

#8 0x2B31FD9FE34C

#9 0xFFFFFFFFFFFFFFFF

I would also like to be able to start d03 and d04, 12 hours into the simulation. Is offsetting the domain start times possible with nudging?

Any help would be much appreciated!