[GEMPAK #PGK-898839]: dcgrib2 issues on Cent OS 5.5 and GEMPAK 6.2.0

Yes!  Definitely!  I was scratching my head about this one.  But you did 
mention the same setup works on your Solaris machines?  You may simply be 
getting lucky with something about Solaris I/O (this is all a presumption and a 
wild guess) that allows multiple processes to write to the same file without 
corrupting it.

-MJ




> 
> Well, sorry for being so thick headed.  I see what you mean now..WRITING to 
> the same file..  So if I have two dcgrib2 going, decoding two different 
> forecast hours, but writing to the same output file there could be issues?  
> Is that right?
> 
> Thanks,
> Robert
> 
> 
> 
> 
> -----Original Message-----
> From: Unidata GEMPAK Support [mailto:address@hidden]
> Sent: Tue 3/15/2011 5:42 PM
> To: Robert Mullenax
> Cc: address@hidden
> Subject: [GEMPAK #PGK-898839]: dcgrib2 issues on Cent OS 5.5 and GEMPAK 6.2.0
> 
> I'm not able to recreate this problem on my end, and don't know of any 
> problems with dcgrib2 on systems similar to yours. However in the past when 
> users experience issues similar to those you're seeing (FL -4 error, missing 
> grids in gem file) it tends to be caused by multiple instances of the decoder 
> (dcgrib2) running at the same time, attempting to write to the same file.  
> The log snippet you posted doesn't show this, but are you seeing different 
> process IDs in the dcmetr log elsewhere?
> 
> Can you upload a copy of one of these gem files which show correct grids in 
> GDINFO but don't display?
> 
> http://motherlode.ucar.edu/repository/alias/gempakuploads/
> 
> -Michael
> 
> 
> >
> > ..actually I am now finding cases where the correct output is not present 
> > in the .gem file for a given forecast hour, but dcgrib2.log does not show 
> > the Cannot read file error.
> >
> >
> > -----Original Message-----
> > From: Unidata GEMPAK Support [mailto:address@hidden]
> > Sent: Tue 3/15/2011 10:18 AM
> > To: Robert Mullenax
> > Subject: [GEMPAK #PGK-898839]: dcgrib2 issues on Cent OS 5.5 and GEMPAK 
> > 6.2.0
> >
> >
> > Robert Mullenax,
> >
> > Your Ticket has been received, and a Unidata staff member will review it 
> > and reply accordingly. Listed below are details of this new Ticket. Please 
> > make sure the Ticket ID remains in the Subject: line on all correspondence 
> > related to this Ticket.
> >
> > Ticket ID: PGK-898839
> > Subject: dcgrib2 issues on Cent OS 5.5 and GEMPAK 6.2.0
> > Department: Support GEMPAK
> > Priority: Normal
> > Status: Open
> >
> >
> >
> > Please let us know how we can assist you further.
> >
> > Unidata User Support
> >
> >
> >
> >
> 
> 
> Ticket Details
> ===================
> Ticket ID: PGK-898839
> Department: Support GEMPAK
> Priority: Normal
> Status: Open
> 
> 
> 
> 


Ticket Details
===================
Ticket ID: PGK-898839
Department: Support GEMPAK
Priority: Normal
Status: Open