We process Level 2 files and are seeing confirmation of this. Random sites
at random times which are even crashing the ORPG reader for LDM files.
- Ryan
On Sep 29, 2020, at 12:07 PM, Karen Cooper - NOAA Affiliate via ldm-users <
ldm-users@xxxxxxxxxxxxxxxx> wrote:
And I just saw my typo -- VCP 35 sails 1.
On Tue, Sep 29, 2020 at 1:03 PM Karen Cooper - NOAA Affiliate <
karen.cooper@xxxxxxxx> wrote:
> I probably should have stated -- I was specifically looking at KDVN and
> KESX -- both in VCP32 Sails1.
>
> On Tue, Sep 29, 2020 at 12:57 PM Karen Cooper - NOAA Affiliate <
> karen.cooper@xxxxxxxx> wrote:
>
>> I'm just going to throw my 2 cents in.
>>
>> I'm seeing the same number of packets in ldm data from radars in Build
>> 18.2 and Build 19. 67 packets from S -> E, but the packets from the Build
>> 19 radar are larger.
>>
>> Also, I'm only seeing one time in the identifier from the radars and the
>> complete ldm files are about the same length of time apart -- 8-9 minutes.
>>
>> We do our own reading of the data, and at first glance, things seem fine
>> - with multiple 00.50 cuts, but not other cuts?
>>
>>
>>
>> On Tue, Sep 29, 2020 at 12:13 PM Victor Gensini <vgensini@xxxxxxx> wrote:
>>
>>> Ohhhh..the fun continues. I have been troubleshooting offline with
>>> Daryl.
>>>
>>> So, from what I can tell, the level2 files for some radars (for whatever
>>> reason) are transmitting two volume scans per file. The radars in question
>>> appear random, but it might be related to a recent upgrade in ROC software
>>> or something. *EDIT: the files that blow things up are SAILS_1!!!*
>>>
>>> The file sizes are double because (surprise!) there are two timesteps
>>> due to this SAILS_1.
>>>
>>> Copy of my pqact here, but I assume this is going to create somewhat of
>>> a headache for others as well.
>>>
>>> https://atlas.niu.edu/vgensini/temp/pqact.split.radar
>>>
>>> -----------------------------------------------
>>>
>>> Vittorio (Victor) A. Gensini, Ph.D., CCM
>>>
>>> Associate Professor
>>>
>>> Department of Geographic and Atmospheric Sciences
>>>
>>> Northern Illinois University
>>>
>>> DeKalb, IL 60115
>>>
>>> https://atlas.niu.edu <http://atlas.niu.edu>
>>> https://wcs.niu.edu <http://wcs.niu.edu/>
>>>
>>> <http://a> <http://atlas.niu.edu>
>>> ------------------------------
>>> *From:* Herzmann, Daryl E [AGRON] <akrherz@xxxxxxxxxxx>
>>> *Sent:* Tuesday, September 29, 2020 11:38 AM
>>> *To:* Victor Gensini <vgensini@xxxxxxx>; ldm-users@xxxxxxxxxxxxxxxx <
>>> ldm-users@xxxxxxxxxxxxxxxx>
>>> *Subject:* Re: level2 via LDM
>>>
>>> Well Howdy,
>>>
>>> This sounds like a queue that is not holding an hour's worth of data and
>>> thus getting duplicated / triplicated product transmisions. My questions:
>>>
>>> 1) Is your LDM queue holding an hour's worth of data `pqmon`? Do you
>>> know if your upstream sources are holding an hour's worth of data? Is your
>>> LDM logging anything exciting about switching upstreams etc ?
>>>
>>> 2) Do the file write timestamps on the files make sense? Such that the
>>> write time coincides with the end of the VCP transmission?
>>>
>>> 3) Do your file byte sizes match what is found on the files at AWS / my
>>> realtime site?
>>>
>>> https://mesonet-nexrad.agron.iastate.edu/level2/raw/KDVN/
>>>
>>> Do you have a recent example (today / yesterday) of a 2x / 3x file? Can
>>> you share that file for others to interrogate!
>>>
>>> daryl
>>>
>>> --
>>> /**
>>> * daryl herzmann
>>> * Systems Analyst III -- Iowa Environmental Mesonet
>>> * https://mesonet.agron.iastate.edu
>>> */
>>>
>>> ________________________________________
>>> From: ldm-users <ldm-users-bounces@xxxxxxxxxxxxxxxx> on behalf of
>>> Victor Gensini <vgensini@xxxxxxx>
>>> Sent: Tuesday, September 29, 2020 11:30 AM
>>> To: ldm-users@xxxxxxxxxxxxxxxx
>>> Subject: [ldm-users] level2 via LDM
>>>
>>> Tom/Steve and LDM junkies,
>>>
>>> Have there been any recent changes to the format of LEVEL2 radar files
>>> coming over LDM that I perhaps missed?
>>>
>>> A couple of weeks ago, I had a couple scripts start to break that are
>>> using gpnexr2_gf with:
>>>
>>> Program received signal SIGSEGV: Segmentation fault - invalid memory
>>> reference.
>>>
>>> Backtrace for this error:
>>> #0 0x7FD1DF3C1697
>>> #1 0x7FD1DF3C1CDE
>>> #2 0x7FD1DE8BC3AF
>>> #3 0x7FD1DE9F0B54
>>> #4 0x4BCFCB
>>> #5 0x4B8E59
>>> #6 0x4B93C7
>>> #7 0x42A510
>>> #8 0x4288FE
>>> #9 0x40F5A7
>>> #10 0x40903D
>>> #11 0x40554A
>>> #12 0x405588
>>> #13 0x7FD1DE8A8504
>>> #14 0x4046D7
>>> #15 0xFFFFFFFFFFFFFFFF
>>> Segmentation fault (core dumped)
>>>
>>> A quick peek of the file size for these stations (relative to others)
>>> indicate nearly a doubling (in some cases tripling) of the file size versus
>>> other stations that are still working. As an example, compare your file
>>> sizes today for KDVN and KILX, both of which are in VCP 35.
>>>
>>> I'm using the standard hhmmssRadarII perl script to create the volumes
>>> off of LDM. Again, no issues for some sites, and then this memory error is
>>> popping up for others. I sense a change in file contents or format...
>>>
>>> Any/all ideas welcome.
>>>
>>> Victor
>>>
>>>
>>> -----------------------------------------------
>>>
>>> Vittorio (Victor) A. Gensini, Ph.D., CCM
>>>
>>> Associate Professor
>>>
>>> Department of Geographic and Atmospheric Sciences
>>>
>>> Northern Illinois University
>>>
>>> DeKalb, IL 60115
>>>
>>> https://atlas.niu.edu<http://atlas.niu.edu>
>>>
>>> https://wcs.niu.edu<http://wcs.niu.edu/>
>>>
>>> <http://a><http://atlas.niu.edu>
>>> _______________________________________________
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>>>
>>
>>
>> --
>> *"Outside of a dog, a book is a man's best friend. Inside of a dog, it's
>> too dark to read."*
>> *--Groucho Marx*
>>
>> -------------------------------------------
>> Karen.Cooper@xxxxxxxx
>>
>> Phone#: 405-325-6456
>> Cell: 405-834-8559
>> National Severe Storms Laboratory
>>
>>
>
> --
> *"Outside of a dog, a book is a man's best friend. Inside of a dog, it's
> too dark to read."*
> *--Groucho Marx*
>
> -------------------------------------------
> Karen.Cooper@xxxxxxxx
>
> Phone#: 405-325-6456
> Cell: 405-834-8559
> National Severe Storms Laboratory
>
>
--
*"Outside of a dog, a book is a man's best friend. Inside of a dog, it's
too dark to read."*
*--Groucho Marx*
-------------------------------------------
Karen.Cooper@xxxxxxxx
Phone#: 405-325-6456
Cell: 405-834-8559
National Severe Storms Laboratory
_______________________________________________
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