[ncl-talk] Error initializing udunits-2 unit system

[Mary Haley]

Yes, I will add a note about this. I opened a ticket, NCL-2765.

I had tried this on cheyenne before. When I tried this on my Mac this
morning, I couldn't reproduce the problem using either NCL V6.4.0 or 6.5.0,
so there's something strange going on here. I think I know what the fix is,
however, and it shouldn't be too difficult.

Thanks again for the report.

--Mary






On Tue, Aug 14, 2018 at 5:07 PM, Jared Lee <jaredlee at ucar.edu> wrote:

> Hi Mary,
>
> Thanks for identifying that work-around. Setting that environment variable
> cleared up the problem for me. That's a more elegant solution than simply
> calling ut_string before calling ut_string_fix! Do you plan to add a note
> about this to the online documentation for ut_string_fix?
>
> For what it's worth, I was able to install NCL v6.5.0 on my own Mac
> laptop, and I had the same problem there. Setting this environment variable
> also fixed the problem on my laptop.
>
> Jared
>
> On Tue, Aug 14, 2018 at 4:42 PM Mary Haley <haley at ucar.edu> wrote:
>
>> Hi Jared,
>>
>> I was able to reproduce your problem with 6.4.0 and 6.5.0 on cheyenne
>> unfortunately. Thanks for providing a nice test program.
>>
>> The work-around for now seems to be setting this environment variable:
>>
>> setenv UDUNITS2_XML_PATH $NCARG_ROOT/lib/ncarg/udunits/udunits2.xml
>>
>> or
>>
>> export UDUNITS2_XML_PATH=$NCARG_ROOT/lib/ncarg/udunits/udunits2.xml
>>
>> Can you try this and let me know if it works in your own environment on
>> cheyenne, and I'll file an official ticket on this.
>>
>> Thanks,
>>
>> --Mary
>>
>>
>>
>> On Mon, Aug 13, 2018 at 3:31 PM, Jared Lee <jaredlee at ucar.edu> wrote:
>>
>>> Hi, I have a follow-up on my original ticket from 10 Aug. I just
>>> discovered that I get the udunits-2 error mentioned in the previous email
>>> if I call ut_string_fix on its own. However, if I call ut_string and THEN
>>> call ut_string_fix, then I get no error and my script runs normally. So it
>>> appears that there's a bug in ut_string_fix in how it's calling the
>>> udunits-2 library. Sorry to keep finding bugs in this script.
>>>
>>> Again, this is a problem with NCL v6.4.0, loading a special pre-release
>>> version of ut_string_fix for v6.5.0 (after I found an earlier bug with the
>>> v6.4.0 ut_string_fix function). I do not know if this was fixed for NCL
>>> v6.5.0 because I'm waiting for gnu compilers to be installed on my own
>>> workstation first, and NCL v6.5.0 is not yet installed on cheyenne, either.
>>>
>>> Jared
>>>
>>> On Fri, Aug 10, 2018 at 5:15 PM Jared Lee <jaredlee at ucar.edu> wrote:
>>>
>>>> Hi ncl-talk,
>>>>
>>>> I'm encountering an error I've never seen before, and which doesn't
>>>> show up at all in ncl-talk archives. I'm running NCL v6.4.0 on Cheyenne,
>>>> and I'm calling a special bug-fix to the ut_string_fix function (it's what
>>>> is now default in v6.5.0, I believe). When I call the ut_string_fix
>>>> function with at least some specific values (I haven't done exhaustive
>>>> testing, but I've done a few tests that yield the same issue), I get the
>>>> error:
>>>>
>>>> "Error initializing udunits-2 unit system"
>>>>
>>>> Here's a simple script that demonstrates the issue:
>>>> ==========
>>>> load "/glade/u/home/jaredlee/tools/nclscripts/functions/ut_
>>>> string_fix.ncl"
>>>> begin
>>>>
>>>> obs_time = (/113976.d, 114720.d, 115392.d/)
>>>> obs_time at units = "hours since 2000-01-01 00:00:00"
>>>>
>>>> mo_nums1 = ut_string_fix(obs_time, "%N")
>>>> print(mo_nums1)
>>>> mo_nums2 = stringtoint(ut_string_fix(obs_time, "%N"))
>>>> print(mo_nums2)
>>>>
>>>> end
>>>> ==========
>>>>
>>>> And here is the output I get when executing this script:
>>>>
>>>> ==========
>>>> jaredlee at cheyenne6:~/tools/nclscripts> ncl bug_udunits2.ncl
>>>>  Copyright (C) 1995-2017 - All Rights Reserved
>>>>  University Corporation for Atmospheric Research
>>>>  NCAR Command Language Version 6.4.0
>>>>  The use of this software is governed by a License Agreement.
>>>>  See http://www.ncl.ucar.edu/ for more details
>>>> Error initializing udunits-2 unit system
>>>> jaredlee at cheyenne6:~/tools/nclscripts>
>>>> ==========
>>>>
>>>> Does anyone have any ideas how to fix this? Is this something that
>>>> cislhelp needs to be involved in to fix on cheyenne?
>>>>
>>>> Jared
>>>>
>>>> --
>>>> ===============================
>>>> Jared A. Lee, Ph.D.
>>>> Project Scientist II
>>>> Research Applications Laboratory
>>>> National Center for Atmospheric Research
>>>> Boulder, Colorado, USA
>>>>
>>>> Member, AMS Planning Commission
>>>>
>>>> Email: jaredlee at ucar.edu (w)
>>>> Phone: 303.497.8485 (w)
>>>> Web: https://staff.ucar.edu/users/jaredlee
>>>> ===============================
>>>>
>>>
>>>
>>> --
>>> ===============================
>>> Jared A. Lee, Ph.D.
>>> Project Scientist II
>>> Research Applications Laboratory
>>> National Center for Atmospheric Research
>>> Boulder, Colorado, USA
>>>
>>> Member, AMS Planning Commission
>>>
>>> Email: jaredlee at ucar.edu (w)
>>> Phone: 303.497.8485 (w)
>>> Web: https://staff.ucar.edu/users/jaredlee
>>> ===============================
>>>
>>> _______________________________________________
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>>>
>>>
>>
>
> --
> ===============================
> Jared A. Lee, Ph.D.
> Project Scientist II
> Research Applications Laboratory
> National Center for Atmospheric Research
> Boulder, Colorado, USA
>
> Member, AMS Planning Commission
>
> Email: jaredlee at ucar.edu (w)
> Phone: 303.497.8485 (w)
> Web: https://staff.ucar.edu/users/jaredlee
> ===============================
>
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