Hi Geeta,<br><br>I noticed that in your rsl.error.0003 file you had multiple CFL errors. These were kind of hidden because you did not delete the rsl file between running real.exe and wrf.exe.<br><br>When CFL errors occur, I often get segmentation faults, usually because the radiation scheme. Segmentation faults can cause core dumps. If not caused by the radiation scheme, maybe it occured in the Kains Fritsch cumulus scheme. I say that because you did get the message: "WOULD GO OFF TOP: KF_ETA_PARA I,J,DPTHMX,DPMIN 40 18 NaNQ 5000.000000" which includes a NaN.<br>
<br>To fix the CFL error, you may have to keep reducing the timestep, even though yours is not long for your grid resolution. That may fix things. <br>If the timestep becomes impractically short, try adding some vertical dampening:<br>
w_damping = 1<br>or play around a little with epssm:<br> epssm = 0.3, 0.3, 0.3<br>Increasing the vertical size of grid cells might help too with CFL errors, but you probably have those where you want them.<br><br>It will help you find the errors I found if you delete or remove the rsl files before running wrf.exe.<br>
<br>best wishes,<br>Kevin<br><br><div class="gmail_quote">On Thu, Mar 3, 2011 at 9:32 PM, Geeta Geeta <span dir="ltr"><<a href="mailto:geeta124@hotmail.com">geeta124@hotmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div>
Dear Sir, <br>Thanks for the reply. I am running WRf 3.2 for the 3 domains 27, 9 and 3 km for the 48hrs Forecast on the IBM P570 Machine. The Operating system is AIX5.3 and the code is compiled using xlf with POE in place. <br>
I had given the command <b>bash$ time poe ../wrf.exe -procs 8. </b><br><br>1. The model gave segmentation fault after 4hrs of Integration. I also plotted the Model forecast for 2nd and 3rd hour at 27km resolution (Domain 1) So it showed me some data being plotted <br>
<font color="#ff0000"><i><u><b>But when I tried to plot the output for the 2nd and 3rd domain, IT says <font style="font-size: 12pt;" size="3">ENTIRE GRID UNDEFINED. </font>Kindly suggest. </b></u></i></font><br><br>2. >>>What data I have used ??<br>
<font color="#ff0000"><u><i><b>I am using the .grib2 files as Initial and BC taken from <a href="ftp://ftpprd.ncep.noaa.gov.in" target="_blank">ftp://ftpprd.ncep.noaa.gov.in</a> at 1x1 degree resolution. </b><br></i></u></font><br>
3. >>>What is the error message in your output file? Did you find any CFL
violation? Your namelist.input looks fine. Please send us error messages in
your run.<br><font color="#ff0000"><u><b><i>I am attatching the rsl.error* and the rsl.out* files, namelist.input and namelist.wps files. </i>It seems to me that there is no CFL violation. </b></u></font><font color="#ff0000"><br>
</font><br>Thanks. <br>geeta<br><br><br><br><hr>Date: Thu, 3 Mar 2011 17:20:41 -0700<br>From: <a href="mailto:wrfhelp@ucar.edu" target="_blank">wrfhelp@ucar.edu</a><br>To: <a href="mailto:geeta124@hotmail.com" target="_blank">geeta124@hotmail.com</a><br>
Subject: Re: WRF 3.2 Model not running after 4hrs of Integration.<br><br>
Geeta,<br>
<br>
What is the error message in your output file? Did you find any CFL
violation? <br>
<br>
Your namelist.input looks fine. Please send us error messages in
your run. <br><div><div></div><div class="h5">
<br>
<br>
On 3/3/2011 3:57 AM, Geeta Geeta wrote:
<blockquote>
Dear All, <br>
I am running WRF3.2 for 3 domains, at 27, 9 and 3kms. After
integrating for 4hours, the model gives segmentation fault. and
these directories are created and does not integrate beyond. <br>
<br>
bash-3.2$ ncdump -v Times wrfout_d01_2010-08-04_00:00:00<br>
Times =<br>
"2010-08-04_00:00:00",<br>
"2010-08-04_01:00:00",<br>
"2010-08-04_02:00:00",<br>
"2010-08-04_03:00:00",<br>
"2010-08-04_04:00:00" ;<br>
}<br>
<br>
bash-3.2$ ncdump -v Times wrfout_d02_2010-08-04_00:00:00<br>
Times =<br>
"2010-08-04_00:00:00",<br>
"2010-08-04_01:00:00",<br>
"2010-08-04_02:00:00",<br>
"2010-08-04_03:00:00",<br>
"2010-08-04_04:00:00" ;<br>
<br>
bash-3.2$ ncdump -v Times wrfout_d03_2010-08-04_00:00:00<br>
Times =<br>
"2010-08-04_00:00:00",<br>
"2010-08-04_01:00:00",<br>
"2010-08-04_02:00:00",<br>
"2010-08-04_03:00:00",<br>
"2010-08-04_04:00:00" ;<br>
<br>
After integrating for 4hours, the model gives segmentation fault.
and these directories are created and does not integrate beyond. <br>
drwxr-xr-x 2 256 Mar 03 04:20 coredir.5<br>
drwxr-xr-x 2 256 Mar 03 04:20 coredir.3<br>
drwxr-xr-x 2 256 Mar 03 04:20 coredir.2<br>
drwxr-xr-x 2 256 Mar 03 04:20 coredir.1<br>
<br>
Kindly help. The namelist.input file is also attached for
reference. <br>
<br>
Geeta <br>
<br>
</blockquote>
<br> </div></div></div>
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