It was not. We set it and run the model again. The resuls were almost identical. The model crushes while initialising the ice component.The ccsm-log read as follows (I have only attached the last lines, for the full log please see the attachment): beg gridcell= 4532 end gridcell= 5663 total gridcells per clump= 1132 proc= 4 clump no = 1 clump id= 5 beg landunit= 6398 end landunit= 8010 total landunits per clump = 1613 proc= 4 clump no = 1 clump id= 5 beg column = 10932 end column = 13693 total columns per clump = 2762 proc= 4 clump no = 1 clump id= 5 beg pft = 61364 end pft = 77245 total pfts per clump = 15882 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/surfdata/surfdata_1.9x2. 5_simyr2000_c091005.nc 393216 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/surfdata/surfdata_1.9x2. 5_simyr2000_c091005.nc 393216 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/snicardata/snicar_optics _5bnd_c090915.nc 458752 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/snicardata/snicar_drdt_b st_fit_60_c070416.nc 458752 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/rtmdata/rdirc_0.5x0.5_si myr2000_c101124.nc 458752 rtm decomp info proc = 1 begr = 21873 endr = 43744 numr = 21872 proc = 1 begrl= 19766 endrl= 37315 numrl= 17550 proc = 1 begro= 2108 endro= 6429 numro= 4322 rtm decomp info proc = 1 begr = 21873 endr = 43744 numr = 21872 proc = 1 begrl= 19766 endrl= 37315 numrl= 17550 proc = 1 begro= 2108 endro= 6429 numro= 4322 rtm decomp info proc = 3 begr = 65625 endr = 87496rtm decomp info proc = 3 begr = 65625 endr = 87496 numr = 21872 proc = 3 begrl= 52888 endrl= 68991 numrl= 16104 proc = 3 begro= 12738 endro= 18505 numro= 5768 rtm decomp info proc = 4 begr = 87497 endr = 109217 numr = 21721 proc = 4 begrl= 68992 endrl= 84511 numrl= 15520 proc = 4 begro= 18506 endro= 24706 numro= 6201 Opened existing file /home/ubelix/iap/eproedrou/CESM_106/inputdata/lnd/clm2/initdata/clmi.BCN.2000-0 1-01_1.9x2.5_gx1v6_simyr2000_c100309.nc 458752 BiogeophysRest::NOTE, PFT weights from finidat file and fsurdat file(s) are different to < 5.000000000000000E-004 -- using fsurdat values. BiogeophysRest::WARNING, weights different between finidat file and fsurdat file(s), but close enough -- using fsurdat values. BiogeophysRest::NOTE, PFT weights from finidat file and fsurdat file(s) are different to < 5.000000000000000E-004 -- using fsurdat values. BiogeophysRest::WARNING, weights different between finidat file and fsurdat file(s), but close enough -- using fsurdat values. BiogeophysRest::NOTE, PFT weights from finidat file and fsurdat file(s) are different to < 5.000000000000000E-004 -- using fsurdat values. BiogeophysRest::WARNING, weights different between finidat file and fsurdat file(s), but close enough -- using fsurdat values. BiogeophysRest::NOTE, PFT weights from finidat file and fsurdat file(s) are different to < 5.000000000000000E-004 -- using fsurdat values. BiogeophysRest::WARNING, weights different between finidat file and fsurdat file(s), but close enough -- using fsurdat values. Reading setup_nml Reading grid_nml Reading ice_nml Reading tracer_nmlCalcWorkPerBlock: Total blocks: 5 Ice blocks: 5 IceFree blocks: 0 Land blocks: 0forrtl: severe (36): attempt to access non-existent record, unit 95, file /home/ubelix/iap/eproedrou/CESM_106/inputdata/ocn/pop/gx1v6/grid/horiz_grid_20010402.ieeer8Image PC Routine Line Sourceccsm.exe 0000000000DF14CA Unknown Unknown Unknownccsm.exe 0000000000DEFFC6 Unknown Unknown Unknown ccsm.exe 0000000000DA5670 Unknown Unknown Unknownccsm.exe 0000000000D3AD7E Unknown Unknown Unknown ccsm.exe 0000000000D3A2BF Unknown Unknown Unknownccsm.exe 0000000000D59637 Unknown Unknown Unknown ccsm.exe 0000000000D57C16 Unknown Unknown Unknownccsm.exe 000000000093A667 ice_read_write_mp 321 ice_read_write.F90ccsm.exe 000000000090CC32 ice_grid_mp_popgr 618 ice_grid.F90ccsm.exe 000000000090B8E3 ice_grid_mp_init_ 337 ice_grid.F90ccsm.exe 000000000097C566 cice_initmod_mp_c 109 CICE_InitMod.F90ccsm.exe 00000000008EA3CD ice_comp_mct_mp_i 231 ice_comp_mct.F90ccsm.exe 0000000000427B1C ccsm_comp_mod_mp_ 740 ccsm_comp_mod.F90ccsm.exe 0000000000433152 MAIN__ 90 ccsm_driver.F90csm.exe 0000000000427B1C ccsm_comp_mod_mp_ 740 ccsm_comp_mod.F90ccsm.exe 0000000000433152 MAIN__ 90 ccsm_driver.F90ccsm.exe 0000000000422FBC Unknown Unknown Unknownlibc.so.6 00000034F221ED5D Unknown Unknown Unknown ccsm.exe 0000000000422EB9 Unknown Unknown Unknown