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[LDM #XXT-101239]: gempak decoders not working with LDM

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  • Subject: [LDM #XXT-101239]: gempak decoders not working with LDM
  • Date: Fri, 31 Aug 2012 09:53:42 -0600
Hi Chris,

re:
> I have been monitoring our new LDM on the blizzard machine and we have not
> been getting data products produced by any GEMPAK programs.  The ldmd.log
> file has a lot of entries like this:
> 
> Aug 31 00:00:03 blizzard pqact[27388] ERROR: No such file or directory
> Aug 31 00:00:03 blizzard pqact[27388] ERROR: Couldn't execute decoder
> "decoders/dcgrib2" [filel.c:1425]
> Aug 31 00:00:03 blizzard pqact[27388] NOTE: Exiting
> Aug 31 00:00:03 blizzard pqact[26225] ERROR: pbuf_flush(): fd=882,
> cmd=(decoders/dcgrib2 -d data/gempak/logs/dcgrib2_AWC_TURB.log -e
> GEMTBL=/home/gempak/NAWIPS/gempak/tables
> data/gempak/model/awc/YYYYMMDD_turb.gem): Broken pipe
> Aug 31 00:00:03 blizzard pqact[26225] ERROR: pipe_put(): write error:
> pid=27388, cmd=(decoders/dcgrib2 -d data/gempak/logs/dcgrib2_AWC_TURB.log
> -e GEMTBL=/home/gempak/NAWIPS/gempak/tables
> data/gempak/model/awc/YYYYMMDD_turb.gem)
> 
> I have attached the pqact.conf file from blizzard.  Ideas?

I believe that this has to do with a setting in ~ldm/etc/registry.xml
that makes the current working directory for routines run as part
of the LDM suite in ~ldm/var/data.  Previous versions of the LDM
would make the current working directory ~ldm.  In the previous
incantation, a reference to a decoder like indicated by the log
messages above (e.g., decoders/dcgrib2) would work fine.  In
the new LDM with the default configuration in registry.xml
these references do not work.

There are two options for a "solution":

- change all GEMPAK pattern-action file actions from decoders/...
  to ... and util/... to ... (where ... is the name of a decoder)

- OR, edit ~ldm/etc/registry.xml and set the current working
  directory to ~ldm (e.g., /home/ldm) instead of ~ldm/var/data

I just tried logging onto blizzard, but I was unsuccessful because
the temporary password we used before is no longer valid.  If
you change the password back to what it was or provide us with
the new one, we could login and make appropriate changes.

Cheers,

Tom
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Ticket Details
===================
Ticket ID: XXT-101239
Department: Support LDM
Priority: Normal
Status: Closed