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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am trying to run WRF4.0 model on high performance computing clusters.<o:p></o:p></p><p class=MsoNormal>After carefully setting up parameters in the namelist.input, as the program is running on the clusters, sometimes I get the following error:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>Program received signal SIGFPE: Floating-point exception - erroneous arithmetic operation.<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'><o:p> </o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>Backtrace for this error:<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#0 0x7FBBFF295577<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#1 0x7FBBFF295B8E<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#2 0x7FBBFE6D426F<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#3 0x14EB182 in __module_radiation_driver_MOD_radiation_driver<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#4 0x15B7F2D in __module_first_rk_step_part1_MOD_first_rk_step_part1<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#5 0x1121A38 in solve_em_<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#6 0x1017C12 in solve_interface_<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#7 0x46F12B in __module_integrate_MOD_integrate<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#8 0x46F70C in __module_integrate_MOD_integrate<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#9 0x46F70C in __module_integrate_MOD_integrate<o:p></o:p></span></p><p class=MsoNormal style='text-autospace:none'><span style='font-family:Consolas'>#10 0x408263 in __module_wrf_top_MOD_wrf_run<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Does anyone know the possible cause for the error message above? Also I attached my namelist.input file here.<o:p></o:p></p><p class=MsoNormal>I say “sometimes I got the error message” because the program sometimes can run successfully but sometimes give this type of error.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks in advance!<o:p></o:p></p><p class=MsoNormal>-Peng Fu<o:p></o:p></p></div></body></html>