<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Hossain,<div class=""><br class=""></div><div class="">Given that the cfl error occurs in your innermost domain d04 with 1km horizontal resolution, your vertical grid setup is most likely the problem. Does it run with 50 vertical levels without specifying the eta levels manually? If not, you should try to increase e_vert. From WRFV3.7 on, there is also the option to use vertical nesting (see the documentation for further information) to avoid running the outer three domains with such a large number of vertical levels.</div><div class=""><br class=""></div><div class="">Also, note that the radiation time step radt normally should be 1min per km resolution of your finest grid (in your case radt = 1) for all domains. This might be too expensive but you could try radt = 3 for all domains.</div><div class=""><br class=""></div><div class="">Cheers</div><div class=""><br class=""></div><div class="">Dom</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 2/08/2015, at 11:38 am, Md Hosen <<a href="mailto:md.hosen@live.vu.edu.au" class="">md.hosen@live.vu.edu.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div id="divtagdefaultwrapper" style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-size: 12pt; background-color: rgb(255, 255, 255); font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Dear WRF users,</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Good day!</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">I am trying use WRF3.7.0 model.<span style="font-size: 12pt;" class=""> Please find the</span><span style="font-size: 12pt;" class=""> </span><b style="font-size: 12pt;" class="">NAMELIST.INPUT_01</b><span style="font-size: 12pt;" class=""> </span><span style="font-size: 12pt;" class="">for details model configuration. When I am trying to run the model, after</span><span style="font-size: 12pt;" class=""> </span><b style="font-size: 12pt;" class="">12 hours simulation</b><span style="font-size: 12pt;" class=""> </span><span style="font-size: 12pt;" class="">I am getting the following error messages in terminal and rsl.error file, respectively. Please find the</span><span style="font-size: 12pt;" class=""> </span><b style="font-size: 12pt;" class="">rsl.error.01</b><span style="font-size: 12pt;" class=""> </span><span style="font-size: 12pt;" class="">file for detail error message.</span></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><b class=""><i class="">From Terminal:</i></b></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)<br class="">This typically refers to a problem with your application.<br class="">Please see the FAQ page for debugging suggestions</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><b class=""><i class="">From rsl.error file:</i></b></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">d01 2000-02-02_12:03:36 34 points exceeded cfl=2 in domain d01 at time 2000-02-02_12:03:36 hours<br class="">d01 2000-02-02_12:03:36 MAX AT i,j,k: 33 1 17 vert_cfl,w,d(eta)= 2.19422960 9.49273258E-02 1.99999809E-02<br class="">d01 2000-02-02_12:03:36 32 points exceeded cfl=2 in domain d01 at time 2000-02-02_12:03:36 hours<br class="">d01 2000-02-02_12:03:36 MAX AT i,j,k: 34 1 17 vert_cfl,w,d(eta)= 2.19983292 5.24121895E-02 1.99999809E-02<br class="">d01 2000-02-02_12:03:36 29 points exceeded cfl=2 in domain d01 at time 2000-02-02_12:03:36 hours<br class="">d01 2000-02-02_12:03:36 MAX AT i,j,k: 34 1 17 vert_cfl,w,d(eta)= 2.19324708 0.121355303 1.99999809E-02<br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Based on these errors, I search in online for getting the solutions. According to some instructions, I reduced the <b class="">time_step = 4* Dx</b>. Also, I put the value, <b class="">w_damping = 1, feedback = 0 </b>and <b class="">damp_opt = 1</b>. But again I am getting similar error messages after <b class="">05 minutes simulation</b> as follows. Please find the <b class="">NAMELIST.INPUT_02 and rsl.error.02</b> files for more detail information.</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><b class=""><i class="">From terminal window:</i></b></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">YOUR APPLICATION TERMINATED WITH THE EXIT STRING: Segmentation fault (signal 11)<br class="">This typically refers to a problem with your application.<br class="">Please see the FAQ page for debugging suggestions</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><i class=""><b class="">From rsl.error file:</b></i></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">d04 2000-02-02_00:05:00 2 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:00 hours<br class="">d04 2000-02-02_00:05:00 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 2.10318875 6.49383163 8.70000012E-03<br class="">Timing for main: time 2000-02-02_00:05:04 on domain 4: 3.05245 elapsed seconds<br class="">d04 2000-02-02_00:05:04 6 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:04 hours<br class="">d04 2000-02-02_00:05:04 MAX AT i,j,k: 33 17 46 vert_cfl,w,d(eta)= 2.29012036 8.88016987 8.70000012E-03<br class="">d04 2000-02-02_00:05:04 2 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:04 hours<br class="">d04 2000-02-02_00:05:04 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 2.16557574 -14.7471304 8.70000012E-03<br class="">Timing for main: time 2000-02-02_00:05:08 on domain 4: 2.97221 elapsed seconds<br class="">d04 2000-02-02_00:05:08 17 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:08 hours<br class="">d04 2000-02-02_00:05:08 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 2.70210004 12.7968359 8.70000012E-03<br class="">d04 2000-02-02_00:05:08 5 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:08 hours<br class="">d04 2000-02-02_00:05:08 MAX AT i,j,k: 33 17 46 vert_cfl,w,d(eta)= 2.26501703 -13.7981815 8.70000012E-03<br class="">Timing for main: time 2000-02-02_00:05:12 on domain 4: 2.94468 elapsed seconds<br class="">Timing for main: time 2000-02-02_00:05:12 on domain 3: 12.33021 elapsed seconds<br class="">d04 2000-02-02_00:05:12 40 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:12 hours<br class="">d04 2000-02-02_00:05:12 MAX AT i,j,k: 33 17 46 vert_cfl,w,d(eta)= 2.88312459 15.3503876 8.70000012E-03<br class="">d04 2000-02-02_00:05:12 13 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:12 hours<br class="">d04 2000-02-02_00:05:12 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 2.63979721 -17.5551376 8.70000012E-03<br class="">Timing for main: time 2000-02-02_00:05:16 on domain 4: 3.06137 elapsed seconds<br class="">d04 2000-02-02_00:05:16 69 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:16 hours<br class="">d04 2000-02-02_00:05:16 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 3.45710945 21.2064857 8.70000012E-03<br class="">d04 2000-02-02_00:05:16 23 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:16 hours<br class="">d04 2000-02-02_00:05:16 MAX AT i,j,k: 32 19 46 vert_cfl,w,d(eta)= 2.72917962 -7.51682758 8.70000012E-03<br class="">Timing for main: time 2000-02-02_00:05:20 on domain 4: 2.94754 elapsed seconds<br class="">d04 2000-02-02_00:05:20 117 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:20 hours<br class="">d04 2000-02-02_00:05:20 MAX AT i,j,k: 33 17 46 vert_cfl,w,d(eta)= 3.61709189 19.6172676 8.70000012E-03<br class="">d04 2000-02-02_00:05:20 37 points exceeded cfl=2 in domain d04 at time 2000-02-02_00:05:20 hours<br class="">d04 2000-02-02_00:05:20 MAX AT i,j,k: 32 17 46 vert_cfl,w,d(eta)= 3.26332951 -21.0664692 8.70000012E-03<br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Could you please suggest any way to solve those problems. Hope, you will extend your helping hand.</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><br class=""></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Kind regards,</div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif;" class="">Hossain</div><div id="Signature" class=""><div name="divtagdefaultwrapper" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px;" class=""><div style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 13px;" class=""><span style="font-family: arial; font-size: small; color: rgb(204, 51, 204);" class=""></span></div></div></div></div><span id="cid:43B73FA8-99BB-4C53-B76F-645DA0AD124F@gap.imk-ifu.kit.edu"><namelist.input_01></span><span id="cid:4F615A05-94A7-4C12-854E-0F00CEA0F236@gap.imk-ifu.kit.edu"><namelist.input_02></span><span id="cid:45CFB769-6D53-4555-A170-7D76A398A882@gap.imk-ifu.kit.edu"><rsl.error.01></span><span id="cid:1950958B-42DB-4300-B46C-A4ABA68B29A7@gap.imk-ifu.kit.edu"><rsl.error.02></span><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">Wrf-users mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="mailto:Wrf-users@ucar.edu" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">Wrf-users@ucar.edu</a><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><a href="http://mailman.ucar.edu/mailman/listinfo/wrf-users" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">http://mailman.ucar.edu/mailman/listinfo/wrf-users</a></div></blockquote></div><br class=""></div></body></html>