Re: (no subject)

Right off the bat, I notice the size of the NetCDF file is about 0.28
Terabytes - wow. Lots of potential for memory issues, etc.

For the record, I've found the ncl-talk and wrfhelp folks to be quite
responsive, especially when the users have been able to narrow down their
issues into something that's manageable. I haven't even looked at the
script that was sent, but my recommendation would be to start commenting out
sections of code and at least isolating the section that causes the seg
fault. I wouldn't be surprised if it was the open() function call :)

As a teacher, I can assure you that students who have isolated their
problems to a few lines of code will get much more response from me than
those who send a full script and ask me to spot the problem in there (often
much more elusive and time-consuming than they realize).

Just a friendly suggestion :) Doing what you can to help the experts help
you often goes a long way.

On Thu, Nov 27, 2008 at 5:58 AM, Erik Noble <enoble_at_giss.nasa.gov> wrote:

> Use the netcdf command ncdump -h filename.nc to view the variables in the
> file. You can also use the ncl command ncl_filedump to do the same thing.
> Once you know which variable you want. follow the NCL WRF application
> examples on the NCL website to extract and graph the data.
> Asides from that, good luck with getting help with getting help with
> viewing WRF data with NCL; the support is spread between both ncl-talk and
> WRF-help and they pretty much just leave it to you to figure out.
>
>
>
> On Wed, Nov 26, 2008 at 11:35 PM, Gang Liu <gangliu_at_nju.edu.cn> wrote:
>
>> Hello,
>>
>>
>>
>> I have run WRF model and then I use the NCL software for post-processing
>> the WRF results output in netCDF format. The following are the command I
>> executed and the error message that followed:
>>
>>
>>
>> ncl nclpost.ncl
>>
>> Copyright (C) 1995-2007 - All Rights Reserved
>>
>> University Corporation for Atmospheric Research
>>
>> NCAR Command Language Version 5.0.0
>>
>> The use of this software is governed by a License Agreement.
>>
>> See http://www.ncl.ucar.edu/ for more details.
>>
>> Segmentation fault (core dumped)
>>
>>
>>
>> The type of the operating system is 'Linux mnode04 2.6.9-55.ELsmp #1 SMP
>> Fri Apr 20 16:36:54 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux'. The attached
>> is the NCL script file named 'nclpost.ncl'.
>>
>>
>>
>> The data file named 'wrfout_d01_0001-01-01_09:00:00' is too large to be
>> uploaded, which has 279421216144 bytes. For the original four-dimensional
>> data arrays read in from the WRF result, the subscripts and dimensions are
>> 'time' (nt = 1800), 'lev' (nz = 201), 'lat' (ny = 121) and 'lon' (nx = 121)
>> from left to right.
>>
>>
>>
>> Could you please provide me any help in solving the difficulty?
>>
>>
>>
>> Thank you very much.
>>
>>
>>
>> Gang
>>
>>
>>
>>
>> ************************************
>> Gang Liu
>> Department of Atmospheric Sciences
>> Nanjing University
>> Nanjing 210093
>> P. R. China
>> Phone: 86-25-83595185 (o)
>> Email: gangliu_at_nju.edu.cn
>> ************************************
>>
>> _______________________________________________
>> ncl-talk mailing list
>> List instructions, subscriber options, unsubscribe:
>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>>
>
> _______________________________________________
> ncl-talk mailing list
> List instructions, subscriber options, unsubscribe:
> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>
>

-- 
Arctic Region Supercomputing Center
http://weather.arsc.edu/
University of Montana
http://www.cs.umt.edu/~morton/

_______________________________________________
ncl-talk mailing list
List instructions, subscriber options, unsubscribe:
http://mailman.ucar.edu/mailman/listinfo/ncl-talk
Received on Thu Nov 27 2008 - 05:24:00 MST