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20040401: 20040330: sfmod problem



Art,

the only answer I have is that your surface file is possibly getting corrupted
by pqact firing up more than one instance of the dcmetr decoder.
This would happen if your file I/O backed up to a point where pqact 
failed to write into the open pipe. The only way to see if this
is the case is to look in the dcmetr.log files for overlapping process id's
for the same filename (date/time).

Since you had sucess with our file, it seems to rule out a general
problem with the decoder.

Steve Chiswell





>From: "Arthur A. Person" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200404011459.i31ExTCT005370

>Steve,
>
>I don't think the limit on "times" is a problem as we start clean with no 
>existing files.  As a test, we brought back 20040326_sao.gem from 
>motherlode to see what would happen and the script works okay with the 
>Unidata file but gives a segmentation fault for ours (gempak 5.6.k, BTW):
>
> Output parameters: TMPC                                                      
>                                                                       
> Input date/time:        Output date/time:  
> 040326/0100             040326/0100         
> 040326/0200             040326/0200         
> 040326/0300             040326/0300         
> 040326/0400             040326/0400         
> 040326/0500             040326/0500         
> 040326/0600             040326/0600         
> 040326/0700             040326/0700         
> 040326/0800             040326/0800         
> 040326/0900             040326/0900         
> 040326/1000             040326/1000         
> 040326/1100             040326/1100         
> 040326/1200             040326/1200         
> 040326/1300             040326/1300         
> 040326/1400             040326/1400         
> 040326/1500             040326/1500         
> 040326/1600             040326/1600         
> 040326/1700             040326/1700         
> 040326/1800             040326/1800         
> 040326/1900             040326/1900         
> 040326/2000             040326/2000         
> 040326/2100             040326/2100         
> 040326/2200             040326/2200         
> 040326/2300             040326/2300         
>Enter <cr> to accept parameters or type EXIT: [SFMOD 3]  Some stations 
>were not added to file.
>Segmentation fault
>
>We did an sflist on the ihtsao.gem output file and it contains no data. It
>would appear that there's a problem with our decoded metar file since the
>script works with the Unidata file but not ours.  Also, ours seems to fail
>in different ways with different days.
>
>Any ideas on what might be going on... some sort of decoder/configuration 
>issue?
>
>                            Art.
>

>On Wed, 31 Mar 2004, Unidata Support wrote:
>
>> 
>> Art,
>> 
>> Could it be possible that you already had a file ihtsao.gem?
>> It seems that your execution below reached the limit on number of
>> times after it added the /0100 period.
>> 
>> running SFLIST, and setting DATTIM=LIST will show what times are 
>> actually in your ihtsao.gem file.
>> 
>> I ran your script here sucessfully.
>> 
>> Steve Chiswell
>> Unidata User Support
>> 
>> 
>> >From: "Arthur A. Person" <address@hidden>
>> >Organization: UCAR/Unidata
>> >Keywords: 200403302005.i2UK5grV028902
>> 
>> >  This message is in MIME format.  The first part should be readable text,
>> >  while the remaining parts are likely unreadable without MIME-aware tools.
>> >  Send mail to address@hidden for more info.
>> >
>> >--1988101148-1787221991-1080677137=:10244
>> >Content-Type: TEXT/PLAIN; charset=US-ASCII
>> >
>> >Hi...
>> >
>> >I'm trying to run the following script in gempak using the sfmod
>> >program and get failures or erroneous results.  Any ideas what the
>> >problem is?  Here's the script and iht_intl.tbl is attached:
>> >
>> >#!/bin/csh -x
>> >
>> >source /home/gempak/NAWIPS/Gemenviron
>> >
>> >sfcfil << EOF
>> > SFOUTF   = ihtsao.gem
>> > SFPRMF   = metar.pack
>> > STNFIL   = iht_intl.tbl
>> > SHIPFL   = no
>> > TIMSTN   = 200/0
>> > SFFSRC   = METR
>> >r
>> >
>> >e
>> >EOF
>> >
>> >sfmod << EOF
>> > SFFILE   = /data/ldm/gempak/surface/20040327_sao.gem
>> > SFOUTF   = ihtsao.gem
>> > DATTIM   = 1;2;3;4;5;6;7;8;9;10;11;12;13;14;15;16;17;18;19;20;21;22;23
>> > DATOUT   =  
>> > AREA     = dset
>> > SFPARM   = TMPC
>> >r
>> >
>> >e
>> >EOF
>> >
>> >exit
>> >
>> >For 20040327, sfmod gives the following and ends in a segmentation fault:
>> >
>> > [SFMOD -4]  Time 040327/0200 cannot be added.
>> > [SFMOD -4]  Time 040327/0300 cannot be added.
>> > [SFMOD -4]  Time 040327/0400 cannot be added.
>> > [SFMOD -4]  Time 040327/0500 cannot be added.
>> > [SFMOD -4]  Time 040327/0600 cannot be added.
>> > [SFMOD -4]  Time 040327/0700 cannot be added.
>> > [SFMOD -4]  Time 040327/0800 cannot be added.
>> > [SFMOD -4]  Time 040327/0900 cannot be added.
>> > [SFMOD -4]  Time 040327/1000 cannot be added.
>> > [SFMOD -4]  Time 040327/1100 cannot be added.
>> > [SFMOD -4]  Time 040327/1200 cannot be added.
>> > [SFMOD -4]  Time 040327/1300 cannot be added.
>> > [SFMOD -4]  Time 040327/1400 cannot be added.
>> > [SFMOD -4]  Time 040327/1500 cannot be added.
>> > [SFMOD -4]  Time 040327/1600 cannot be added.
>> > [SFMOD -4]  Time 040327/1700 cannot be added.
>> > [SFMOD -4]  Time 040327/1800 cannot be added.
>> > [SFMOD -4]  Time 040327/1900 cannot be added.
>> > [SFMOD -4]  Time 040327/2000 cannot be added.
>> > [SFMOD -4]  Time 040327/2100 cannot be added.
>> > [SFMOD -4]  Time 040327/2200 cannot be added.
>> > [SFMOD -4]  Time 040327/2300 cannot be added.
>> > Parameters requested: SFFILE,SFOUTF,DATTIM,DATOUT,AREA,SFPARM.
>> > GEMPAK-SFMOD>Segmentation fault
>> >
>> >For 20040328, sfmod finishes but the data are bad after ~7 or 8Z.
>> >
>> >
>> >                           Thanks.
>> >
>> >                             Art.
>> >
>> >-- 
>> >Arthur A. Person
>> >Research Assistant, System Administrator
>> >Penn State Department of Meteorology
>> >email:  address@hidden, phone:  814-863-1563
>> >
>> >--1988101148-1787221991-1080677137=:10244
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>> >Content-ID: <address@hidden>
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>> >MyAgIDQzMg0KDQo=
>> >--1988101148-1787221991-1080677137=:10244--
>> >
>> --
>> ****************************************************************************
>> Unidata User Support                                    UCAR Unidata Program
>> (303)497-8643                                                  P.O. Box 3000
>> address@hidden                                   Boulder, CO 80307
>> ----------------------------------------------------------------------------
>> Unidata WWW Service              http://my.unidata.ucar.edu/content/support 
>> ----------------------------------------------------------------------------
>> NOTE: All email exchanges with Unidata User Support are recorded in the
>> Unidata inquiry tracking system and then made publically available
>> through the web.  If you do not want to have your interactions made
>> available in this way, you must let us know in each email you send to us.
>> 
>
>-- 
>Arthur A. Person
>Research Assistant, System Administrator
>Penn State Department of Meteorology
>email:  address@hidden, phone:  814-863-1563
>
--
NOTE: All email exchanges with Unidata User Support are recorded in the
Unidata inquiry tracking system and then made publically available
through the web.  If you do not want to have your interactions made
available in this way, you must let us know in each email you send to us.