Re: 20020822: ldm-5.2 pqsurf problems on IRIX (fwd)

• To: bit-bucket <bit-bucket@xxxxxxxxxxxxxxxx>
• Subject: Re: 20020822: ldm-5.2 pqsurf problems on IRIX (fwd)
• From: Robb Kambic <rkambic@xxxxxxxxxxxxxxxx>
• Date: Tue, 17 Sep 2002 11:12:58 -0600 (MDT)

==============================================================================
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
==============================================================================

---------- Forwarded message ----------
Date: Tue, 17 Sep 2002 12:08:57 -0400
From: "[ISO-8859-1] Christian Pagé" <page.christian@xxxxxxx>
To: Greg Thompson <gthompsn@xxxxxxxxxxxx>
Subject: Re: 20020822: ldm-5.2 pqsurf problems on IRIX

Hi Greg,

Yes I would be very interested in the code.

Thanks a lot,

Christian Pagé

On Tuesday, September 17, 2002, at 11:15 AM, Greg Thompson wrote:

Christian,

there were long-standing problems with pqsurf like stability
and ability to ingest all METARs (our raw files always had ALL
METARs while our gdbm files always missed some METARs like
Canadian SPECIs).  We had horrible stability issues when we
changed Linux systems from Debian to Red Hat (pqsurf used to
stay alive for weeks at a time then die unexpectedly under
Debian but then it began dying every day or two under Red Hat).
Finally, I couldn't take it any longer and re-wrote the
"metar2nc" Unidata decoder to ingest/decode METARs and populate
a MySQL database.  I spent nearly 150 hours re-writing the
decoder to handle ALL METARs not just the U.S. ones.  This DB
is far, far better than either raw text files or NetCDF files.
You can see the database in action on two websites I maintain:
   http://www.rap.ucar.edu/weather/surface/
   http://adds.aviationweather.gov/projects/adds/metars/

If you're interested in this technique, I can share the code
with you.  Though it is currently MySQL specific, it would not
take much effort to adapt it to either Oracle, mSQL, PostgresSQL,
or other db systems.

--
+--------------------------------------------------------------+
| Greg Thompson       http://www.rap.ucar.edu/~gthompsn/       |
|                     Research Applications Program            |
| (303) 497-2805      National Center for Atmospheric Research |
|    (fax) -8401      P.O. Box 3000  Boulder, CO 80307-3000    |
+--------------------------------------------------------------+

On Thu, 22 Aug 2002, [ISO-8859-1] Christian Pag? wrote:

Hi,

Your comment made me find the problem, it was the gdbm library : it
was not the correct version. I am now using the correct version
which is 1.7.3 and everything works fine again! Maybe the gdbm
should be bundled with ldm?

Christian,

I'm glad you found the problem. Actually we are trying to depreciate the

pqsurf code because it breaks when every there's a major change in the

bulletins. I believe the folks at RAP are working on a solution. I'll cc Celia at RAP, maybe she can point us to a contact person working on the

solution.

Thanks,
RObb...

Thanks Robb! :-)

Christian Pag?
UQAM

On Jeudi, ao?t 22, 2002, at 04:15 , Robb Kambic wrote:

On Thu, 22 Aug 2002, Unidata Support wrote:

------- Forwarded Message

To: support@xxxxxxxxxxxxxxxx
From: =?ISO-8859-1?Q?Christian_Pag=E9?= <page.christian@xxxxxxx>
Subject: ldm-5.2 problems
Organization: Universite du Quebec a Montreal
Keywords: 200208221254.g7MCs8K03800 LDM 5.2 pqsurf

Hi,

I still have the problem of running ldm-5.2 (see previous emails
on this
problem). My problem is that pqsurf exits (and ldm-5.2 is brought
down)
when I have a DBFILE in my pqsurf.conf. Is this a bug in ldm-5.2?
It was
running fine with ldm-5.1.4.

Christian,

I a little confused here, does ldm-5.1.4 run fine with the DBFILE in

pqsurf.conf?  Maybe you need to rebuild GDBM ?  Also if the
program dump
core, could you send the  dbx where again?

I check the release notes for 5.2, there wasn't any mods to the pqact

code.

Robb...

Thanks again,

Christian Pag?
page@xxxxxxxxxxx UQAM
http://meteocentre.com/    http://meteoalerte.com/

Agent de recherche et de planif. +1 514 987 3000 ext. 2376
D?partement des Sci. de la Terre et de l'Atmosph?re UQAM


------- End of Forwarded Message

====================================================================
===
=====
Robb Kambic                                Unidata Program Center
Software Engineer III                      Univ. Corp for Atmospheric Research
rkambic@xxxxxxxxxxxxxxxx                   WWW: http://www.unidata.ucar.edu/
====================================================================
===
=====

Christian Pag?
page@xxxxxxxxxxx
http://meteocentre.com/        http://meteoalerte.com/
Agent de recherche et de planification +1 514 987 3000 ext. 2376
D?partement des Sciences de la Terre et de l'Atmosph?re UQAM

Christian Pagé
page@xxxxxxxxxxx
http://meteocentre.com/    http://meteoalerte.com/

Etudiant au Doctorat en Sciences de l'environnement UQAM
+1 514 987 3000 ext. 2376