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20030716: gempak buffer size

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  • Subject: 20030716: gempak buffer size
  • Date: Wed, 16 Jul 2003 10:07:24 -0600
David,

Below is the message I sent to Rich yesterday. At that time, he
only mentioned sncross/sncross2.

For sntser, you will find "MAXTIM" set to 100 in
$GEMPAK/source/programs/sn/sntser/sntser.f. You probably want this
set to LLMXTM.

Snlist should already use LLMXTM.


-------------------------------------------------
Rich,

I looked at your sounding data file and .nts file.

The time range you have encompasses 180 soundings:
 SNFILE   = soundings_2002_1.out
 DATTIM   = 020630/1434-020704/1819

Each of these soundings has 9 parameters. Looking at your data,
I see that your soundings have around 300 levels (some more, some less).

So, the buffer size that is needed to store the data for the cross section is:
300*9*180 = 486,000.

In the program file $GEMPAK/source/programs/sn/sncross2/sncross2.f
(and $GEMPAK/source/programs/sn/sncross/sncross.f as well), you will
find the buffer size declaration:

        PARAMETER       ( MSDSIZ = 100000 )

This number must be increased to fit your data.
I successfully used:
        PARAMETER       ( MSDSIZ = 600000 )

If you have built your diustribution from source, you can
make this change to your source, and then just rebuild the
executable with:

cd $GEMPAK/source/programs/sn/sncross2
vi sncross2.f   <---- edit the MSDSIZ definition
make clean
make all
make install
make clean

If you are using a binary distribution, let me know what version and platform
and I'll send you an updated copy of sncross2.

Steve Chiswell
Unidata User Support


>From: David Fitzgerald <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200307161440.h6GEeBLd002744

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>
>Chiz,
>
> 
>
>I heard the voicemail you left for Rich Clark concerning the buffer size in
>sncross2.  I have the source code for version 5.6j.  Could you tell me the
>changes to the code I need to make to allow 600000 elements in he buffer?
>
> 
>
>I need to change sncross2, snprof, snlist, and sntser to allow for the
>larger size.
>
> 
>
>Thanks!!
>
> 
>
>Dave
>
> 
>
>*********************************************
>
>David Fitzgerald
>
>Distributed System Specialist II
>
>Millersville University
>
>Millersville PA 17551
>
>Phone: 717-871-2394
>
>Fax:     717-871-4725
>
>E-mail: address@hidden
><mailto:address@hidden> 
>
> 
>
>
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><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Chiz,</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>&nbsp;</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>I heard the voicemail you left for </span></font><font
> size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Rich Clark
> </span></font><font
>size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'> concerning
>the buffer size in sncross2.&nbsp; I have the source code for version
>5.6j.&nbsp; Could you tell me the changes to the code I need to make to allow 
> 600000
>elements in he buffer?</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>&nbsp;</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>I need to change sncross2, snprof, snlist, and sntser to
>allow for the larger size.</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>&nbsp;</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Thanks!!</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>&nbsp;</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Dave</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>&nbsp;</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>*********************************************</span></font>
> </p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
> font-family:Arial'>David Fitzgerald</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Distributed System Specialist II</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>  font-family:Arial'>Millersville</span></font><font size=2 face=Arial><span
> style='font-size:10.0pt;font-family:Arial'> </span></font><font size=2
>  face=Arial><span style='font-size:10.0pt;font-family:Arial'>University</span
> ></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Millersville PA 17551</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Phone: 717-871-2394</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>Fax:&nbsp; &nbsp;&nbsp; 717-871-4725</span></font></p>
>
><p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
>font-family:Arial'>E-mail: <a href="mailto:address@hidden";>
> address@hidden</a></span></font></p>
>
><p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
>12.0pt'>&nbsp;</span></font></p>
>
></div>
>
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